DIY propane torch for roofing. Gas burner for roofing

The past decade has been characterized by the emergence of revolutionary changes in coating technology soft roof. Classic roofing felt has given way to modern built-up materials. The composition of the tools needed to perform roofing work has also changed. Bucket of bitumen and brush replaced roof burner.

What kind of equipment is this?

Gas-burner – irreplaceable hand tool to perform work on the installation of soft roof coverings using modern weld-on materials. The flame torch formed by a working burner allows you to create local heating of the surface to perform the following operations on the roof:

• drying wet areas of the underlying surface;
• heating and melting of the lower bitumen layer of the deposited roll material.

In addition to performing work on the roof, the roofing gas burner is used:

• for heating various products and materials to the required temperatures;
• when soldering metals with light alloy solders;
• for burning old paintwork.

Design and principle of operation of the burner

The roofing gas burner includes the following elements:

To operate the burner you will need the following additional equipment:

• liquefied gas cylinder;
• gas reducer– reduces the gas pressure from the cylinder to the working pressure (0.1 – 0.15 MPa), stabilizes the gas flow in the burner;
• flexible hose – connects the burner to the output of the reducer.

The weight of the burner is small, no more than 1 - 1.5 kg. Many models have the ability to switch to standby mode, when during short breaks in operation the gas supply is reduced to a minimum that allows the flame not to go out.

A convenient option that saves gas and eliminates the need to re-ignite the burner after breaks in operation. To ignite the burner, it is usually used external source flame: matches or lighter.

Roof burner models

• GGS-1– the simplest and most popular model. Flame length 600 mm. Versatility and low weight determine a wide range of applications.
• GG-2 – basic model gas burner. It has an excellent price-quality ratio. An excellent choice for DIY roof repairers.
• GG-2U– the model is similar to GG-2, differs by a shorter main tube. Convenient for working in hard-to-reach places.
• GG-2S– the beginning of the professional series. The burner is designed to operate in strong winds.
• GGK-1– has a weighted glass and a trigger gas supply mechanism.
• GGS-4-1.0– has 4 glasses, simultaneously covering the entire width of the roll with flame. Significantly speeds up work on large volumes of roofing work.

Application of gas burners

A gas burner is an almost indispensable tool for roofing work using fused materials. A well-chosen high-quality burner allows a team of two people to lay up to 60 rolls of weldable material in one daylight.

When performing work with an open flame, special attention must be paid to strict compliance with all rules fire safety. So, if the area covered by the infection exceeds 500 square meters, a prerequisite is the presence of fire hoses at the site.

There must be access to the hoses from all four sides of the surface to be covered and the possibility of spilling water at any point of the laid covering.

Stages of work when laying material using a roofing torch

Work on arranging the roof with rolled fused materials is carried out in several stages:

How to make a gas burner with your own hands?

Today, manufacturers offer a huge range of gas burners that can satisfy almost any user. But there are times when homemade instrument takes its rightful place in the home workshop.

Making a gas burner with your own hands is quite feasible at home. If for one reason or another you cannot buy or make a burner, you can rent/rent it.

What you will need for this:

• Gas jet with a nozzle passage diameter of 0.8 mm. The easiest way is to pick one up from a used car carburetor. Home gas stoves are often equipped with a set of additional jets.
• Gas line - copper or brass tube 70 - 80 cm long. The diameter and thickness of the walls are selected so that it is possible to cut an internal thread from one edge to secure the nozzle.
• Wooden or plastic handle. Wide range of options. It should be beautiful and comfortable.
• The glass is the body of the burner and protects the combustion zone. You can pick up a piece of thin-walled metal pipe 100 - 140 mm long, with an internal diameter of 25 - 40 mm. Can be made from sheet metal 0.8 - 1 mm thick. Connect the edges by welding or using rivets. Manufacturing materials: soft iron, copper, brass.
• Control valve. Perhaps the most difficult issue is in the design. It should easily shut off the gas and be convenient to use. You can search among the plumbing fittings, or you can pick them up from a used home gas stove.
• Gas cylinder, reducer, flexible hose. There is no need to invent anything, just take something ready-made. These elements directly address issues of safe operation.

We assemble in the following sequence:

1. In the gas line pipe On one side we cut the internal thread and screw in the nozzle.
2. We attach a glass to the same side of the tube from the outside. We use three spacers from available material.
3. Drill a hole in the handle, insert the other end of the gas line into it and fix it with glue.
4. We connect the output of the control valve with the end of the line protruding from the back of the handle.
5. We connect the input of the control valve to the flexible hose, secure it with a clamp.
6. Connect the second end of the flexible hose, reducer, gas cylinder.
7. Let's turn on the gas and wait for now the gas will displace the air in the hose.
8. Set it on fire, adjust it the required flame length.

When making a burner with your own hands, you must remember that a gas burner is a high-risk tool. Consider every transaction carefully. It is necessary to exclude the possibility of gas leakage when operating a homemade burner.

Safety rules when working with gas burners for roofing

Carrying out work on the roof using a gas burner affects several areas of labor protection:

• work at height;
• work carried out with open fire;
• handling of flammable substances.

Use, strictly observing safety precautions, is the basis for preserving human life and health.
Accordingly, the entire range of security measures can be divided into three parts.
Measures to prevent a worker from falling from a height:

• the presence of shoes that prevent the worker from slipping off the roof surface;
• safety devices to prevent falls from a height;
• presence of fencing of the working area, walking walkways, etc.

Measures to protect workers from exposure to elevated temperatures:

• availability of special clothing, gloves;
• Do not direct the flame towards people or elements of the gas installation;
• You must not leave the work area or climb scaffolding with a lit burner in your hands.

Fire safety measures:

• ensure availability in the work area primary funds fire extinguishing;
• work with an open flame can be carried out in daylight hours days in the period from 8 to 18 hours;
• no more than one liquefied gas cylinder can be in the work area at a time;
• it is necessary to exclude heating of the gas cylinder;
• Avoid overheating and ignition of the deposited material.

Before starting work it is necessary to inspect gas equipment and make sure it works. Check the tightness of the connections of the cylinder, reducer, hose and burner.

conclusions

Practice shows that to successfully complete any work, two main tasks must be solved:

1. carefully and comprehensively study the subject of the work to be done;
2. choose the right tool.

Knowledge gives 50% of success in the upcoming work, and a high-quality, wisely selected tool – 80%. Take action, everything is in your hands!

Installing a soft roof using adhesive compounds is an unproductive task, especially if the covering area is more than 100 m2. Some types of coatings, for example, those made from oxidized bitumen on a glass-polymer base, are generally difficult to glue, and the strength of the seam turns out to be very low. However, there is an alternative - melting a soft roof with a jet open flame. The method is effective and universal, but its implementation requires a special gas burner for roofing work.

Classification of gas burners

Burners can be not only gas, but also liquid. In the latter case, they run on diesel fuel, but are less common, since their effectiveness appears only at ambient air temperatures reduced to +10...+15ºС.

Burners of this type are distinguished according to the following characteristics:

1. According to the type of combustible mixture used. In addition to the mentioned liquid and gas ones, combined designs are also used when work area simultaneously with flammable gas (propane and, much less frequently, acetylene), air or oxygen is supplied.
2. By the number of working nozzles. Gas burners for roofing work can have from 1 to 4 nozzles. In the latter case, the technological capabilities of the device are expanded (for example, the width of the roll material), but at the same time the consumption of combustible gas increases.
3. By the presence or absence of a gearbox. Gearless burners, although structurally simpler, do not have the function of regulating the gas flow, which is inconvenient in the practice of their use.
4. By the method of igniting a gas stream. Modern designs of the devices in question have a piezo ignition unit, which is much more functional than using a match or lighter for the same purposes.
5. According to the design of the gas supply tube. It can be straight or bent at an angle, normal or shortened length.

Such burners operate from cylinders. A reducer or other gas distribution device is installed on the cylinder. For propane cylinders, with a small amount of work, it is possible to install them on the roof; in other cases, hoses are used, the length of which should not exceed 12...15 m.

Most propane roof torch designs can be used for other purposes, such as removing old paint(successfully replace a blowtorch), for heating copper or brass pipes before welding, for heating cooled bitumen, etc.

Being devices that operate using flammable and explosive mixtures, industrial versions of gas burners are manufactured according to technical requirements GOST 17356-89.

• The standard standardizes the following performance indicators:
• One hundred percent tightness of shut-off bodies that control the gas supply;
• Smooth propane supply;
• Presence of wind protection against spontaneous blowing;
• Reliable shutdown of the device and response time;

Thermal power control limits.

Design The components of a gas burner for roofing work are considered using the example of a combined gas-air burner with air suction from environment

1. . The structure of such a device includes: A chamber for preheating fuel, into which an electric heating element with a current regulator is hermetically mounted. The unit is equipped optionally, if most roofing operations will be carried out with low temperatures
2. ambient air.
3. A housing made of heat-resistant steel, in which the propane jet is mixed with air.
4. An injector connected to the body using a union nut with a reliable seal.
5. An extension tube into which the ignited mixture is supplied from a flow divider mounted immediately behind the nozzle.
6. A mouthpiece, the shape of which determines the width of the combustible mixture emerging from the burner nozzle. The mouthpiece also provides wind protection for the jet.
7. A valve that controls the supply of gas-air mixture and flame length.
8. Handles, which are made of heat-resistant plastic.

In addition, the delivery package for a gas burner for roofing work may include a replaceable injector, a set of paronite gaskets and a connecting clamp for the cylinder. Most designs of these units are designed for propane cylinders (welded steel, capacity 50 liters according to GOST 15860-84).

To operate such burners, you will also need a one-stage balloon reducer (for example,) and a first-class combined rubber hose in accordance with GOST 9356-75 with a diameter of 9 mm, with a thread braid.

The roof burner is operated in the following sequence. Before starting, check the tightness of the sealing gaskets by passing air through the burner. If necessary, the O-rings are replaced, sealed with sealant, and used no earlier than a day later.

When you turn on the propane burner, first open the air supply valve, then the gas supply valve, and then use a lighter, match or piezo ignition system to ignite the air-gas mixture. By moving the divider, the required length of the torch is adjusted, and using the mouthpiece, the width is adjusted. If required, install an adapter in the form of a bell with several working nozzles on the mouthpiece. Disabling the device is done in the reverse order.

Choosing a torch for roofing work

1. The main operational characteristics of gas burners for roofing work are:
2. Propane consumption, kg/h.
3. Thermal power of the burner, kW.
4. Limits of torch length adjustment, mm.
5. The largest heating width of roofing felt or other material used for laying soft roofing.
6. Nominal surface heating temperature, ºС. Specific consumption
7. fuel per unit of covered surface, kg/m2.

Burner weight, kg. The parameters are selected for ease of use. For example, a burner that has a mass of more than 1.5...2 kg, long time

A number of characteristics depend on the heat capacity of the soft roofing material. In particular, for roofing felt to be ready, temperatures of 160…180ºС are required, and for surfaced materials – 300…350ºС.

For the productivity of the process, the relationship between the thermal power of the burner W (indicated in the product passport) and gas flow V (this parameter is important for propane cylinders) is important. To calculate, you can use the dependence

V = W/Qnη, where:

Q = 12.88 kWh/kg – calorific value propane;

n is the number of nozzles/sockets through which the burning gas-air mixture is directed to the heated (or melted) roofing material;

η = 0.8…0.91 – efficiency of the heating process (with an increase in the number of nozzles, the efficiency decreases).

The most popular models of gas burners for roofing are:

• GV-850. It has a control valve for gas supply; the length of the torch is easily controlled using a lever. The power of the burner allows it to be used effectively also for heating metal-plastic pipes and for preparing copper alloys for welding or soldering. Price – 1700...2200 rubles;

• GGS-1-1.7. Popular due to its achievements high temperatures heating, simplicity and reliability of design. Price - 2000...2200 rub. A version of the same device, but with 4 bells and a roller, will cost 12,000...12,500 rubles;

• GGS-1-1.0. The most compact of the domestically produced burners, it allows you to work in tight spaces using a 5 liter cylinder. Price – 1300...1500 rubles;

• GV-250U. It is distinguished by its simple and reliable design, and has a built-in device for forced air suction. Price – 1100...1200 rubles;

• Kemper-1200 (Italy). The set includes several nozzles with different slot widths, the ability to work with propane cylinders with a capacity of up to 100 liters, and an ergonomic handle shape. Price – 4400...4700 rub.

A few words about the possibility and feasibility of making the considered burners with your own hands. Due to the need for very careful sealing of all connections, as well as the high precision of manufacturing of all parts, it is difficult to make such a device yourself. A particularly important area of ​​work is the manufacture of the feeding and mixing unit. Some things can be borrowed from a welding gas torch, and the handle, extension cord and hose can be selected according to the recommendations of specialists.

For soft roofs, optimal hydro- and thermal insulation materials are those that are fused using a roofing torch. This is labor-intensive and complex work, which, moreover, is performed at height. The result high-quality installation the roof will have a long service life. Therefore, only quality equipment. In the article we will consider existing species and the benefits of various roofing burners.

What is a roof burner?

This is special equipment for heating the fused roof. In addition, the surface is dried using a burner, the workpieces are heated for construction work, burn construction paint and use it for all work where it is necessary to heat elements or surfaces.

The gas burner for the roof consists of:

• metal cup made of heat-resistant material;
• gas supply hose;
• nozzles for igniting the burner with wind protection.

The roofing burner is a mobile design with convenient handles for carrying it. It is lightweight, up to 1.5 kg, and is equipped with a comfortable handle made of wood or plastic up to 1 m long.

The gas most often used is propane. It enters the housing through a gas hose. Its supply and flame length are regulated using a special valve on the burner. To save gas consumption, roofing burners are equipped with a gearbox that controls fuel consumption.

All designs of gas burners are equipped with a suction system atmospheric air. This is a mandatory function, but there are additional ones that make work more comfortable. First of all, the ability to regulate operating modes. For example, when there is a break in work, the standby mode is activated and fuel is saved. Any gas burner can be lit with regular matches or a lighter.

Less popular, but also used for roofing work, are burners that run on diesel fuel.

Application of gas burners

They are used in most branches of construction and industry.

The design of gas burners depends on the fuel they burn and the application. But overall they are identical. The burner, consisting of a housing, a flame adjustment lever and a fuel supply valve, is connected to a gas cylinder through a reducer. Some manufacturers supplement the designs of gas burners with additional wind protection of the flame and piezo ignition.

Types of gas burners

Hand torches are used to lay roofs made of bituminous materials. Most often these are propane torches for lever roofing. They are convenient to use - the flame length is easily adjusted by simply pressing the lever mechanism, switching to an economical gas consumption mode.

During operation, the gas burner consumes a mixture of propane with air or with the addition of technical oxygen. Gas-air burners are the safest to operate. They provide sufficient temperature for roofing work, heating metal parts, annealing paint and for soldering cables.

Valve-type gas burners are easy to use, light weight and do not cause difficulties during repair. By creating a high flame with great power, they make it possible to carry out work even in windy weather.

There are also acetylene torches that operate on a mixture of acetylene and oxygen. Most often they are used for welding work. They are designed in such a way that oxygen in injection acetylene burners is needed not only to maintain combustion, but also to supply acetylene.

In addition, the burners differ in functionality and have different abbreviations:

GV 500

Used for roofing work. It is capable of creating a heating temperature of up to three hundred degrees, which is quite sufficient for fusing all bituminous materials;

GV 850

More advanced model. Has a valve for precise feed adjustment technical gas from a cylinder. And thanks to the lever, the flame length can be easily adjusted during work. Its power is enough to melt metal-plastic pipes and refractory cables.

GV 3

Powered by propane. Used for heating and welding metal and manual soldering. The diameter of the glass is 5 cm.

GGS1-1.7

The most versatile and most popular burner. Heats the surface up to four hundred degrees. It is used for laying soft roofing materials, road and waterproofing works. The power is 115 kW with a fuel consumption of 9 kg/h.

GGS1-1.0

Indispensable for working in confined spaces and on roofs with a large angle of inclination. It is a good replacement for a regular blowtorch. At small sizes(length 50cm) has more power, safe, economical and easy to use. Its power is 40 kW, and gas consumption is 3 kg/h.

GGS1-0.5

Used for minor roofing repairs, soldering, cable welding. Due to its economical fuel consumption, it can work with a five-liter gas cylinder. Power is 10 kW, consumption is 0.7 kg/h.

GGS2-1.5

Equipped with two parallel sockets, due to which it has high productivity. Power 179 kW with fuel consumption 14 kg/h.

GGS4-1.0

Or a roller. It has 4 bells, which provides simultaneous heating of a width of 1 meter and allows you to work non-stop. The cuts have special hooks for the roofing material; with their help, all the work of laying it can be done by one person. Power 120 kW, consumption - 12 kg/h.

Gas burners are used in all types of construction and repair work and can heat surfaces up to four hundred degrees. In particular: Gas-air injection burner GG-2, gas burner GVK 1, liquid fuel burner GRZh-1, propane burner GSP-3, propane burner GVK-1-R, propane burner GSP-4 and others.

The price of gas burners for roofing varies greatly and depends on many factors: performance, additional functions, on the ability to work with a particular fuel, as well as on the manufacturer. It is worth noting that they are inexpensive and accessible to most consumers.

What do you need to know when working with a gas burner for a soft roof?

Let's look at this using the example of roofing work when laying roofing felt:

• First, the entire surface is cleaned - not only large debris is removed, but also fine dust;
• for marking, sheets of roofing material are laid out on the roof with an overlap of up to 10 cm, after which it is twisted, and the edges of all sheets are secured with a gas burner at the base of the roof;

• During operation, the roll of roofing felt is rolled out gradually, melting and pressing tightly to the roof surface. All wrinkles and bubbles formed under the material should be removed immediately. When working on flat roofs this is done using a hand roller;
• The final stage of work with a gas burner will be heating up all the seams of the roofing material. When heated, it melts, sticking tightly to bottom sheet. Additionally, the seams are strengthened with a hand roller.

When a high-quality gas burner with adjustable fuel supply is used for work, up to 600 m of roofing material can be laid non-stop.

Important! It is allowed to use a gas burner for a soft roof at a temperature of at least 15 degrees. If you need to work at a lower temperature, you will need a liquid fuel burner.

Safety precautions when working with a roofing gas burner

• Roofing work is required in special clothing and shoes with non-slip soles;
• use a safety system;
• Before use, the gas burner is carefully inspected. It is necessary to ensure that all structural elements are in good condition;
• When the burner is operating, there should not be a second gas cylinder on the roof. It is also necessary to periodically check the tightness of the connection between the hose and the reducer and the cylinder;
• When lighting the burner, under no circumstances should you stand in front of the nozzle;
• the height of the flame must be adjusted so that it does not touch the cylinder, hose or people;
• when heating the roofing material being built up, one must not allow it to ignite;
• Only the lower part of the sheet should melt, without softening the entire thickness of the material;
• When lighting a propane burner, you should first open the valve half a turn and leave it to purge for a few seconds. And only then can the mixture be ignited and the height of the flame adjusted;
• with the gas burner running, it is prohibited to leave the work area or climb the scaffolding;
• to extinguish the burner, the gas supply is first shut off, and then the locking lever is lowered;
• if the burner overheats or there is a problem kickback, the operation immediately stops, the gas is turned off, and the burner is placed to cool in a container with cold water.

Should I buy a ready-made burner or make my own?

It’s worth saying right away that it will be much easier and safer to buy a ready-made burner than to make it yourself. But if you have confidence in your abilities and love to do everything with your own hands, then you can try.

A gas burner is a complex device and in order to make it you will need certain skills and careful adherence to many rules. But still, it is better to leave some of the work to professionals. This primarily concerns the gas supply system and gas storage tank.

To make a torch, a metal rod and a divider are used. They are attached to a handle made of heat-resistant wood.

The gas supply hose is borrowed from a gas welding system or independently machined from brass.

Despite the fact that the external appearance of a roof burner assembled by yourself will differ significantly from its store-bought counterparts, it will cope with its basic functions.

But when working with it, you will have to pay special attention to the slightest gas leaks or other malfunctions. And even if there is a minor problem, work should be stopped immediately.

Diesel burner for roofing

These roofing burners operate on liquid fuel. They are especially relevant for operation at high temperatures, in which case they are equipped with built-in fuel heating. They are fully automated and capable of working with fuel of various qualities. Diesel roof burners are equipped with a high-pressure air blower system, which ensures stable and safe ignition and reduces soot formation.

Liquid fuel burners are structurally different from their gas counterparts. In diesel fuel, the fuel enters the chamber under high pressure, which leads to liquid spraying. And the already sprayed tiny particles are ignited at the exit of the nozzle, creating a flame. Therefore, the burner is connected to the compressor and fuel container using oil- and gas-resistant hoses.

The liquid fuel roof burner is designed to operate under the following conditions:

• at ambient temperatures from - 25 to + 40 degrees;
• at atmospheric pressure - 101 kPa;
• if necessary, flame temperatures up to 600-800 degrees.

In this case, the approximate consumption of diesel fuel is 10 l / 100 m2 of area.

How to operate a diesel roofing burner:

• check the serviceability of all structural elements;
• turn on the compressor and supply air to the nozzle. Then, opening the fuel supply valve, bring a special ignition harness to the nozzle. After ignition, use the diesel fuel supply valve to adjust the flame level.

To carry out repairs and other roofing work that involves melting mastics and laying roofing materials, you will need a special gas burner. The device is primarily used to perform the following tasks:

Heating and drying of roofing materials;

Metal cutting and soldering;

Firing a layer of old paint.

Approximate structure of a gas burner

The gas burner has a fairly simple design. It is a glass made of metal and equipped with a nozzle and a handle, which is attached to the body. Heat-resistant plastic or wood can be used to make the handle. Gas enters the housing passing through the gas pipeline. In most cases, propane under pressure is used to operate the burner.

The burner glass should have a shape that protects the flame from being blown out by the wind.

There is a valve on the burner body that allows you to adjust the flame length and intensity of the supplied gas. It’s good if the burner has a reducer, which allows you to use gas economically.

Roof burner components

During the assembly process of the device, mechanical processing is practically not used. The burner is assembled from ready-made spare parts. To make it we will need:

1. A steel valve that can be taken from a cylinder intended for storing liquefied gas.
2. A plug that is used for transportation gas cylinders.
3. A nozzle from a blowtorch with a nozzle diameter of 0.8 mm.
4. A piece of pipe one meter long with an internal diameter of 10 mm. and steel thickness 2 mm.
5. Wooden handle.

You can use the handle from a burnt-out soldering iron as a handle.

Step-by-step burner manufacturing process

The process of manufacturing a gas burner begins with the fact that we insert the supply tube, for which we will use a steel pipe, into the handle and secure it with glue. The divider and body must be machined from a brass rod, the diameter of which should be 20 mm. In the finished body, two radial holes are drilled (each diameter is 5 mm) and four holes are drilled in the divider rod (each diameter is 1 mm).

During assembly, it is necessary to press the divider into the housing with a slight tension. At the same time, the flange must be installed inside the housing with a gap, that is, the internal diameter of the manufactured housing must be 0.6 mm larger. diameter machined The resulting gap is responsible for the inhibition of the gas flow, which is supplied to drilled holes in the igniter.

Such nozzles are found in purchased models

To make a thin hole in our nozzle, you need to take a drill with a diameter of 2 mm. and use it to make a blind hole, which is 1.5 mm. doesn't reach the exit. Drill with a diameter of 0.4 mm. used for jumper. The resulting hole must be completely caulked with gentle hammer blows. Then you need to sharpen the end. To do this, take sanding paper and sharpen it until the desired cross-section of the outlet hole is found, that is, until the nozzle can be placed on the tip of the threaded burner tube.

A supply hose made of fabric-rubber material must be attached to the end of the gas supply tube. Secure the hose to the tube with a clamp. We set the working pressure, after which we supply gas. Wait until all the air is forced out of the hose, and only then insert the nozzle into the flame of the gas burner.

Attention! The nozzle is introduced into the flame without a housing or a divider.

Next you need to sand the end. The length of the burner flame should ultimately be 5 cm. We put the body together with the divider onto the external thread of the nozzle. Make sure that the burner produces an even flame with no signs of soot.

To achieve the desired effect, slowly rotate the body on the nozzle thread.

If you got free threaded connection, seal it with FUM tape.

Video. How does a roofing gas burner work?

Hello! My name is Viktor Kaploukhoy. I am an engineer by training, graduated Technical University. Hobbies: IT, engineering and technology.

In just two decades, construction technologies have been updated, new building materials and tools have appeared. For example, the old faithful roofing felt has given way to new fused roofing materials, which are better in all respects. No one will argue with this anymore. And accordingly, the bucket with hot bitumen and a brush for coating has gone into oblivion, instead of which builders today use a gas burner for roofing work.

What is a gas burner

This is a hand tool connected to a gas cylinder. It includes:

• An injector, inside of which a nozzle with a through hole of small diameter is installed. Through it, gas in the form of a flame is supplied to the place of surfacing or drying.
• Cup. This is a device within which flammable gas is mixed with air (oxygen). The glass has many holes through which air is sucked into the flame zone. In addition, this device protects the fire flame from the effects of wind.
• A valve that opens the gas supply and regulates its pressure, and accordingly the length of the torch.
• The main pipe that separates the torch from the handle that the welder holds.
• Handle made of plastic or wood.

Of course, to operate a gas burner, you need a hose connected to the cylinder and a reducer that reduces the gas pressure in the line. The gas pressure at the burner outlet is 0.1-0.15 MPa. A propane gas burner for roofing weighs a little, in the range of 1.0-1.5 kg. So it is convenient and easy to work with it.

How to make a burner with your own hands

In principle, the design of a propane gas burner is simple. The main thing is to assemble the nozzle and glass. The remaining elements and parts are ready-made units and parts that are sold in any hardware store. Therefore, it will not be difficult to make it yourself.

So, what is required to assemble a burner with your own hands?

Gas burner assembly

First of all you need at one end copper tube cut the internal thread using a tap of the appropriate diameter. Copper is not a very hard metal, so it will not be difficult to carry out this operation with your own hands. It will also be easy to screw in the jet.

With a glass everything is more complicated. To do this, you will have to cut one side of the pipe into several longitudinal petals (6-8 pieces), and then bend them towards the center. You will get a cone, but there is no need to bring the petals to the end; you need to leave room for the main tube, onto which the glass is placed. After which the petals are pressed against the tube, where they are sealed. There are slots between the petals that will serve as air supply inside the nozzle. The length of the petals is approximately one third of the entire length of the glass.

Important! The jet should be located at a distance equal to the length of the petals. That is, a flame of propane and oxygen should form at the level of the slots.

The gas burner for roofing work, or rather, its front part in the form of a nozzle is ready. All that remains is to assemble the back part. To do this, you will need two M25 bends made from a pipe with a diameter of 25 mm with threaded threads. In a one-way bend, in a place where the thread is not cut, a cone is formed into which the rear part of the main tube is inserted. This can be done by heating the squeegee with an oxygen torch and tapping it on all sides.

The regulator is screwed into it gas valve. The second connection, it is double-sided, is screwed into the valve on the other side. Be sure to wrap it on a sealing material. For example, on fum tape. An adapter from a threaded connection to a hose connection is screwed onto the rear end of the second bend. There is no point in making it yourself, because it is sold in any hardware store and is very cheap.

Now all that remains is to make the handle and install it on the prepared device. Handle options – great amount. The main thing here is to hold the entire homemade device comfortably. For example, it can be cut from wooden board 5 mm thick, you can buy an ax handle and adjust it to the size and shape. It is better to attach the handle to the brackets, because this is the strongest section in the entire structure. Optimally, this is a rear drive, because the control valve should be located slightly in front for ease of use.

There are different ways to attach a piece of wood to a metal tube.

• Make a recess along the entire width to fit the diameter of the pipe of the squeegee, place the squeegee in it and secure it with two clamps made of metal tape.
• Install the squeegee on the side of the handle and also secure with clamps.

So, you have made a gas burner for roofing work yourself, you can connect it to a gas cylinder and carry out testing. To do this, the hose is connected to the cylinder through a reducer, where it is secured with a clamp. Its second end is threaded into the adapter, where it is also secured with a clamp.

The cylinder opens, the supply of propane through the gas reducer opens. And the last thing to open is the control valve on the injector. Gas should flow through the nozzle with a characteristic sound. You must wait until the air inside the device is completely released. After which the gas flow is ignited. The valve near the handle regulates the length and power of the torch.

Attention! A homemade gas burner for roofing work is a high-risk device. Therefore, all operations performed must be approached with special care. This is especially true for the connections of all elements with each other. Complete tightness must be maintained.

Fire safety measures

Regardless of whether a factory gas burner is used or a homemade one, fire safety requirements must be strictly observed.

• Keep a fire extinguisher on the roof when performing roofing work.
• All work is carried out only during daylight hours.
• When laying a soft roof using a gas burner, only one propane cylinder can be placed on the roof.
• It must be avoided from heating up.
• The roofing material itself must not be overheated or ignited.

These are the simple conditions that guarantee the safety of construction operations involving roofing with fused materials. They are simple and easy to do, so there shouldn't be any problems.

• Mounted equipment for walk-behind tractors
• Application of garden rider
• Attachments for the Neva walk-behind tractor
• Do-it-yourself walk-behind tractor trailer

There are, however, quite a few alternatives for roof spraying of straight roofs. Fused narrow-roll substances are widely used. The raw material appears to be multilayer, containing a base that connects the element and protective layers.

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Roof microburner– this is a movable structure with comfortable handles for carrying. The Sympathy contains a small weight, up to 1.5 kilograms, and is equipped with a handle made from a log or plastic that is comfortable for use, up to 1 m long.

In the gas property, the only thing used is hydrocarbon. Someone acts in the shell using a gas hose. Its supply and length of fire are regulated with the support of a special valve in the burner. In order to save exhaust gas, roofing games are equipped with a gearbox, which controls fuel consumption.

Absolutely all gas burner systems take into account the concept of atmospheric suction. This is an inevitable role, but it is also necessary to accept auxiliary ones, which provide the service in the most convenient way.

In the main priority is the possibility of coordinating workers' regimes. For example, if there is a stop in the service, the order of hope is introduced and fuel is saved. Each gas microburner lights up with ordinary matches or a lighter.

Less known, but also used for roofing work, are games that operate in diesel fuel.

What kind of equipment is this?

The structure of the burner includes an owner with gas supply regulators, which makes a railroad with a mixer at the end. The microburner is connected with a rubber sleeve to the hydrocarbon-slide gas cylinder using a pressure regulator.

Basically, tamed gas games are used to heat the surface and fuse various substances. Gas games come in two types: forced and non-forced atmosphere.

These types of burners have the following characteristic industrial properties:

1. Atmosphere supply in a gas burner with forced supply performed in the following way, air is supplied with the support of a propeller or compressor. The advantage of this type of game is the likelihood of a clear torch option. The downside is the difficulty of installing the device.
2. In burners that do not have a forced supply of atmosphere, air is supplied freely through a hole in the diffuser due to the number of gas supplies. The simple structure makes it possible to do it yourself. The disadvantages include the inadmissibility of a clear torch option.
3. The gas microburner is started by igniting a gas stream, which is obtained from the diffuser; in some modifications, automatic ignition is taken into account.

Design and principle of operation of the burner

The design of the gas game consists of the following elements:

• A metal cup with convex holes along the sides.
• A nozzle for the purpose of spraying gas.
• Plastic or wooden owner.
• Rubber sleeve with the purpose of gas cart to the body of the game.
• Valve for regulating the supplied gas and the length of the fire.

Due to the modification, the game has the following differences:

• Fuel supply is forced and non-injector.
• Power and gas consumption.
• The amount of fire supplied. Accept single-flame and multi-flame.
• The method of using the device is easy and electromechanized.

The length of the game due to its installation is from 0.8 to 1 meter and the weight is approximately 1.5 kg. In addition, due to the modification, gas games can be equipped with different fuel saving modes.

Roof burner models

For work related to laying the roof, a specified type of device with the following modifications is used:

1. GG-2 propane micro-burner for the purpose of preparing and performing waterproofing work. Excellent for small-scale roofing work. Recommended for use by young professionals. Mostly low price.
2. GG-2U The similarity of the previous modification is distinguished by the curly gas route. It is mainly used in inaccessible areas near the roof.
3. GG-2S It seems to be a high-quality burner, and in addition it operates in propane. Contains 2 valves for the purpose of clearly regulating the order of operation and the likelihood of operation in very windy weather.
4. GS1-1.7 contains small mass, and the volume appears to be multi-purpose. It is used for the purpose of drying and fusing substances into the roof. Makes it possible to heat the plane up to four hundred degrees.
5. GK-1 The air-propane microburner is armed with a depressing cup and a gas supply lever. It is used for the purpose of removing color by burning in wood surfaces and waterproofing roofs.
6. GS1-1.0 contains a simple mass and small volumes, which makes it possible to use it for waterproofing roofs with a huge slope.
7. GGS1-0.5 Mainly used for the purpose of small repairs to the roof and for economical use of gas in a project.
8. GGS4-1.0 contains 4 cups of fire supply. It seems economical and allows 1 person to process a large amount of shelter in a short period of time.
9. GV-3 used primarily for the purpose of heating metals for welding or soldering.
10. GV-111R used for the purpose of fusing narrow-roll bituminous substances into the roof. In addition, it is used for the purpose of burning the previous color in different surfaces.
11. GV-50, GV-900 comfortable and easy to use, distinguished by the length of the torch.
12. GV-500 I use it for the purpose of fusing bituminous substances. Makes it possible to warm up the heated surface up to THREE HUNDRED degrees.
13. GSV-850 contains an injection type of fuel supply. The microburner is equipped with a valve for a clear gas supply option and a lever for adjusting the length of the torch.

It is necessary to direct interest in such characteristics, as well as:

• Fuel requirement.
• Flame torch size.
• Heat performance.
• Weight and length.

Application of gas burners

For the purpose of repair work and the adaptation of roofing with bituminous substances, a gas burner is preferably used. Due to 8 hours of labor time, approximately 600 square meters of welding material can be placed next to a high-quality burner.

Carrying out work according to the adaptation and repair work shelter different types with the use of gas, the installation must be laid in accordance with absolutely all fire protection laws.

For work according to installation different areas shelter using gas game accept established limits similar to:

1. You can only lay no more than 500 square meters at a time.
2. When laying more than 500 m, the presence of fire hoses with water is necessary.
3. Has access to fire hydrants and is required to appear at four edges of the mulched roof.
4. Water supply using a fire hose must be supplied to each point of the laid plane.

Stages of work when laying material using a roofing torch

The procedure for laying bituminous or so-called soft surfaced substances using a gas game consists of the following steps:

• Cleaning the roof surface from debris.
• Unwinding the rolls in the plane of the roof with an overlap of at least 10 cm for marking purposes. Subsequently, the rolls must be wound and numbered.
• Priming the plane with prime in order to remove microcracks, chips and dust binding.
• Having marked the plane and primed it, the rolls are unwound over time and heated with a gas burner in order to fuse it into a plane.
• During the final period of laying movement, it is necessary to heat the seams of the deposited substance with a torch.

After fusing the substances, in order to prevent wrinkles, the covered plane must be rolled out with a roller.

How to make a gas burner with your own hands?

A gas burner can be made personally in domestic circumstances; for this purpose, the following components will be needed:

1. Rectifier with pressure reducer to regulate gas supply. It can be taken from an oxygen cylinder.
2. A stopper that is used for transporting gas cylinders.
3. Liquid fuel nozzle with a nozzle diameter of 0.8 millimeters. It can be taken from a gasoline blowtorch.
4. A piece of iron route, a tube version, with a length of only one unit with a diameter of 10 millimeters and a wall width of 2 millimeters.
5. Handle made of slightly heat-permeable substance. Mostly from a log.
6. Shell and gas divider game (cup). They can be turned from a brass rod with a diameter of 20 millimeters.

The further installation procedure for the gas game consists of the following steps:

• The road is inserted into the made handle and secured with glue.
• In the turned body it is necessary to drill 2 radial holes with a diameter of 5 millimeters. In addition, in the housing it is necessary to drill 4 holes with a diameter of 1 millimeter in the divider rod.
• The next step in the game production is simply sketching the cutting rod into the shell. The completed shell must be fixed into the railway.
• In the routes with the inserted housing, it is necessary to cut the thread with a tap and screw in the nozzle.
• At a different route end, a gas-air hose is connected and secured with a clamp.

After installing the gas game, you need to unscrew a certain oxygen rectifier and wait until the blue fuel squeezes out the air space in the sleeve. Then use matches to burn the flow of gas from the body (glass).

Safety rules when working with gas burners for roofing

When operating a gas burner, strict compliance with the security laws is necessary:

1. Before starting the activity with the device, it is necessary to carry out an inspection of the game into the object of automatic defects and loss. ant. gas income. Micro burner for roofing work
2. The arson game cannot be played by standing in front of the glass nozzle.
3. Work must be carried out using canvas gloves, overalls and shoes.
4. When working with a gas burner, you must be careful not to overheat the raw material being welded. Thus (as well as overheating can cause destruction of the substance.
5. At the workplace where the microburner is used, there is no need for third-party objects, especially flammable ones.
6. When working with a gas burner, fire extinguishing resources must be available near the laying area.
7. The repairman operating with the device is in no way obliged to move with the burnt burner anywhere other than the mulched surface.

The principles of safety during operations with a gas burner must always be observed and indisputably oh, thus it is also a guarantee of the unity of the functioning Person and the people around him.

A gas microburner seems to be a necessary assistant for laying the roof with gentle substances. Such a device, as well as a gas microburner, is widely used in construction and correctional work.

As a rule, gas flames are used for the purpose of fusing roofing materials, removing color from various surfaces, welding and soldering various metals. Game of taking various types systems for the purpose different types works

It should be immediately noted that it is much easier and more harmless to purchase a finished burner than to make it yourself. However, if you have confidence in your own abilities and always do it with your own hands, then you can try it.

Gas micro burner- this is a difficult apparatus and for this purpose, in order to produce it, some skills will be needed, and detailed execution a large number of laws. However, it is always better to preserve the activity element for the purpose of specialists. This primarily concerns the organization of supply and containers in order to preserve gas.

To produce a torch, a metal base and a gas divider are used. Attach them to the handle from a heat-resistant log.

The hose for supplying gas is drawn from a gas welding organization or personally ground from brass.

Despite this, in this case, what appearance The roofing micro-burner, selected with its own handles, differs quite significantly from shop analogues; sympathy will cope with its own main functions.

But next to the service, it is necessary to especially carefully concentrate interest in the smallest gas leaks or other problems. And even on a number of minor issues, the service must be interrupted immediately. Roofing information works in low fuel conditions.

They are especially important for operating near extreme temperatures; in this case they are equipped with integrated fuel heating. They are fully automated and ready to work with gasoline of different properties.

Diesel roofing games are equipped with a high-pressure blower concept, which guarantees stable and reliable ignition and reduces soot formation.

Low-fuel burners stand out from their gas counterparts. In a diesel engine, the fuel enters the chamber under great pressure, which leads to water splashing. And the previously sprayed fine particles are ignited at the exit from the nozzle, forming a fire.

In conjunction with this, the microburner is connected to a compressor and a container with gasoline next to the support of oil-gasoline-resistant hoses.

In a home workshop or garage, there is often a need to use a high-temperature burner. It has the widest range of applications – from soldering to roof repairs. Not to mention the need to heat up the metal part for processing.

When doing metalworking work on metal, a gas torch can be used to heat the workpiece for the purpose of subsequent hardening. If you are engaged in electric welding, when working with some metals it is necessary to warm up the area of ​​​​the future weld.

Tool stores sell a variety of tools for working safely with fire. A propane burner can be of any size and any configuration. The size of ballpoint pen for jewelry soldering:

Or a multi-nozzle ramp for heating bitumen on the roof:

The advantage of industrial options is the safety certificate. However, there is nothing in the design that cannot be replicated at home. Since any product in the store costs a lot of money, we will tell you how to make a burner with your own hands.

Important! Homemade devices for working with fire carry a potential danger. Therefore, a propane torch manufactured without technical expertise is operated at your own peril and risk.

How to make a burner yourself

Let's take a closer look at the nuances that you should pay attention to when making a burner.

• First of all, it is necessary to use refractory metals. A properly configured burner can produce up to 1000 ° C, so the nozzle must match the flame temperature;
• It is important to choose a reliable working crane. If something goes wrong, the gas supply is first cut off and the danger is eliminated. If the tap leaks, you will not be able to quickly extinguish the flame;
• The connection point to the gas source (a bottle with a valve or a 5 liter propane bottle with a reducer) must be reliable. It is when operating low-quality shut-off valves that most accidents occur.

Let's consider standard diagram and the operating principle of the injection burner:

Gas is supplied under pressure through the hose (1). Typically propane. The pressure is formed due to the evaporation of liquefied gas in the cylinder, and it is sufficient to organize a stable and directed flame. A reducer is not required, the amount of gas is regulated by the operating valve (2).

The shut-off valve is located on the cylinder valve. Its function is only to open/close the fuel supply; other adjustments are made using a working tap.

The gas supply tube (3) leads the jet into the nozzle and ends with a nipple (6), which sets the direction of the flame. The nipple with the tube, in turn, is located in the so-called insert (5). It organizes the mixing of gas with atmospheric air.

The insert with a tube and nipple is fixed in the nozzle with a screw. As a rule, the burner is dismountable for cleaning and maintenance of the nipple.

The formed air-gas mixture is directed to the nozzle of the nozzle (8), where the mixture is additionally saturated with oxygen from the air. For combustion stability, there are ventilation holes (7).

The burner is made by hand according to the drawing.

Dimensions are designed to work with cylinders up to 5 liters.

We will tell you about the structure of the liner separately; the dimensions are shown in the drawing:

The outer diameter of the liner tube (1) should be half a millimeter smaller than the inner diameter of the nozzle. A washer (2) with holes for air supply is welded inside. The sleeve (3) is designed to fix the tube with the nipple.

The peculiarity of the design is that by moving the tab inside the nozzle, you can regulate the air leak through the ventilation holes. This allows you to regulate the flame temperature over a wide range.

The attachment can be made from steel pipe, but it would be better to turn it from a steel blank on a lathe. The shape of the nozzle should be somewhat narrowed at the outlet, then the flame will be forced and the temperature in the combustion zone will be higher. Alloy steel grade 45 is used.

There are two ways to make an insert: You can assemble it from two tubes and a steel washer with holes. The structure is soldered with refractory solder, with abundant fluxing. Or you can grind it entirely from a steel blank. The second option is preferable.

The supply tube is copper or brass. On the side of the hose connection, a flange is made (concentric grooves can be made for better fixation). A suitable nipple is screwed into the working end. You can take it from a primus stove, or a gas burner from a household stove.

Important! When using a stove nipple, remember that the kit comes with different nozzles. For natural or liquefied gas.

The second option will suit us. When the burner is ready with your own hands, it is necessary to carry out initial debugging.

The burner is set to use the gas that will subsequently be used. The insert is lightly secured with a screw so that the ventilation holes are blocked by half.

By slightly opening the operating valve and moving the insert, we achieve an even, powerful flame. Then we finally fix it in the nozzle.

If you did everything correctly, the temperature at the outlet of the nozzle will reach 1100° C.

Let's move from theory to practice. How to make a gas burner using available materials:

The nozzle is made from a classic car pump design. Such items often lie idle in the garage.
The steel used is excellent and the size is suitable for a gas burner.

We cut a “rose” in the back part, bringing the ends to the center. The feed tube will be inserted into this bundle.

The part came from a construction foam gun.
This is a device for reusable use, so the steel is strong and coated with refractory chromium.

The thickness of the tube is almost 1 millimeter, which is quite enough for rigidity.

At the end of the gun tube there is a nozzle with a ball valve to form foam. The ball is knocked out with a thin awl or gypsy needle. The resulting hole is sufficient to supply gas to the nozzle. The tube with the nozzle is connected using semi-automatic welding.

• To connect the structure to the working faucet, conventional plumbing fittings with threads were used. It's simple water pipe, no special steel is needed here. The part of the burner where the tap is located does not heat up to critical temperatures. I had to buy a ball gas valve;
• The holder is literally made from scrap metal. Handle from a motorcycle footrest. By lightly processing it with a grinder, we get the optimal shape. The clamp for attaching to the burner pipe is from the handlebars of the same motorcycle.

Finally the holder fits on a motorcycle handle. The thermal insulation is good, and the burner fits snugly in the hand.

It took one weekend to make and 100-120 rubles to buy a tap and a fitting for connecting to a hose.

As a bonus, look at the drawing of the tested miniature device:

A gas burner for soldering is made from a needle from a dropper. Connects to a lighter refill bottle.

Conclusion! A homemade gas burner is a reality. Just be careful when operating!

Simple and effective method make a gas burner with your own hands - video

When it is necessary to equip a soft roof over a large area, the use of adhesive compositions becomes ineffective and costly. Some types of roofing materials - made from the same oxidized bitumen - are difficult to glue, and the seam at the joints is unreliable. As an alternative installation method, a propane torch for roofing work is used - a tool for installing built-up waterproofing. This device is very effective and versatile, and justifies its use one hundred percent.

Types of gas burners

Of course, there are not only propane burners. There is also a whole classification according to various signs. Let's look at this in a little more detail.

The principle of operation of a gas burner

Propane burners operate from gas cylinders on which a reducer or other gas distribution device is installed. With a small amount of work, propane cylinders can be installed on the roof; in other cases, they are placed lower, connecting to the burners through hoses, the length of which should not exceed 15 m.

Torches are used not only for connecting rolls waterproofing materials, but also other tasks. For example, for dismantling an old roof, removing paint, heating metal pipes before welding, heating hardening bitumen, and so on - the equipment is multifunctional.

Interesting to know! Propane burners are devices that use flammable, explosive mixtures. That's why industrial production these devices are allowed only in accordance with technical standards, established by GOST 17356-89.

State standard regulates the following technical indicators:

• shut-off devices that control the gas supply must be completely sealed;
• propane must be supplied smoothly to avoid the possibility of explosion;
• devices must be equipped with wind protection to prevent arbitrary flame extinguishing;
• it is required that the device switches off reliably within a certain time;
• thermal power limits have been set.

If you are interested in more detailed information, please refer to the text of the named document.

Gas burner design

Now let's look at how a propane burner works - what components are there and what they are intended for. As an example, consider a combined gas-air burner that sucks in air from the surrounding space.

1. Fuel preheating chamber– a container inside of which an electric heating element is installed with the ability to regulate the strength of the current supplied to it. This unit can be installed optionally, for example, when it is necessary to perform work at subzero air temperatures.
2. Burner body– this part of the device is made of heat-resistant steel, in which the fuel stream is mixed with air.
3. Nozzle– the element is connected to the body through a union nut that has a hermetically sealed seal.
4. Control valve– a unit that controls the propane pressure value at any time. It is worth noting that during long breaks the gas supply will be turned off automatically.
5. Extension tube– it receives the combustible mixture from the flow separator. The last part is installed immediately behind the nozzle.
6. Mouthpiece– the shape of this element determines the width of the combustible mixture at the exit from the nozzle. It is also designed to protect the flame from the wind.
7. Control valve– regulates the supply of the combustible mixture, and accordingly the length of the flame escaping from the nozzle.
8. Pen, made of heat-resistant plastic, allows you to operate the tool with convenience and safety.

In addition to the above, the delivery package may include additional parts. For example, a set of sealing paronite gaskets, a replaceable injector, a connecting clamp for the cylinder.

Interesting to know! A cylinder for a propane burner is purchased separately. Most devices are designed for use in conjunction with 50 liter cylinders welded from steel. Technical standards for these cylinders are established by GOST 15860-84, which is still in force today.

To use gas-air burners, a single-stage reducer is also required for the cylinder, which will ensure normal pressure of the supplied fuel. You also cannot do without a combined type rubber hose. The product class is first, according to the even older GOST 9356-75. The hose must have a thread braid and be 9 mm in diameter.

How to use the burner

The roofing burner is used in the following sequence.

1. Before starting, it is imperative to check the tightness of the sealing gaskets. For this purpose, it is necessary to pass air through the burner.
2. If a leak is detected, the O-rings must be replaced with new ones, coated with sealant. After this procedure, the burner can be used no earlier than a day later.
3. When starting, the first thing to do is open the air supply valve, then the gas supply valve. Next, using the existing ignition system (piezoelectric element, lighter, match), the combustible mixture at the exit of the nozzle is ignited.
4. The divider moves to adjust the sufficient length of the torch, and its width is adjusted with the mouthpiece.

Advice! If necessary, an adapter-socket for several working nozzles is installed on the mouthpiece.

Turning off the burner is carried out strictly in the reverse order.

How to choose the right burner for roofing work

First of all, it is necessary to evaluate all the important operational characteristics of the device, which include:

• gas consumption, kg/h;
• output power, kW;
• the maximum possible width of the heated section of roofing felt or other roofing material that is used for installing a soft roof;
• possible limits of flame (torch) length, mm;
• nominal temperature heating of the surface, °C;
• fuel consumption in kg/m2 laid surface;
• device weight.

Of course, everyone will look at the characteristics that are most important to them, but first of all you should still pay attention to the ease of use of the equipment. The simplest example is if you try for a long time If you work with a torch that weighs 1.5-2 kg, your hand will quickly get tired, and the work efficiency will decrease significantly. Using the same reasoning, you can determine the length of the torch - usually they focus on a value of 300-900 mm. At maximum length You can safely operate the burner while standing.

A number of characteristics should be selected according to the heat capacity of the soft roof being laid. For example, an ordinary roofing felt requires an operating temperature of 160-180 degrees, while for surface-surfaced materials this will not be enough, because their operating temperature is 300-350 degrees.

Burner performance can be calculated using a very simple formula, which uses the following quantities: W – thermal power of the equipment; V – fuel consumption; Q is the calorific value of propane, which is equal to 18.88 kWh/kg; n – the number of nozzles (nozzles) through which the flame is directed to the object being melted (heated), also known as the roofing material; η = 0.8...0.91 is the efficiency of the heating process itself (this parameter will decrease with an increase in the number of active nozzles).

The formula itself looks like this: V = W/Qnη.

Table. The most popular models of propane burners on the market today.

Photo, model	Description
	It has a control valve for gas supply - the flame length is easily adjusted using the existing lever. The power of this equipment allows it to be used for heating metal-plastic pipes, as well as preparing copper alloys for soldering and welding. The estimated cost is 2000 rubles.
	This model is popular because it allows you to reach significant heating temperatures. The design of the burner is simple and extremely reliable. The average cost for the option with one nozzle is 2,200 rubles, with 4 nozzles – 12,000 rubles.
	Of the domestically produced burners, this model is the most compact and lightweight. You can work with such equipment in a small space by connecting a 5 liter cylinder. The cost ranges from 1300 to 1500 rubles.
	The device is simple and reliable design, priced at 1100-1200 rubles. Has a built-in system for forced air suction.
	The only foreign instrument in our top list. This burner comes with several replaceable nozzles with different slot widths. It can be used with different cylinders, up to 100 liters. The control handle is ergonomic and comfortable. The average price on the shelves in Russia is 4,500 rubles.

Is it possible to make a gas burner yourself?

Now let's discuss the possibility of making a propane torch yourself. Of course, this is all possible, however, due to the requirements for sealing all parts, as well as the high precision of their manufacture, doing this in practice becomes very difficult. And if you take into account the low cost of factory-made devices, then this makes no sense. The most important part of the assembly work is the manufacture of the fuel supply and mixing unit, so spare parts from other devices are often used for such work. Let's try to describe the self-assembly process.

The diagram above shows the approximate structure of a propane burner - we have already discussed the main structural elements. When assembling, we will not make everything, and we will use spare parts from other equipment that you may have in stock. We will need:

• steel valve - you can take it from any cylinder designed for storing liquefied gas;
• plug - it is usually used when transporting gas cylinders;
• We will borrow a jet from a blowtorch, the nozzle of which should be 0.8 mm;
• You will also need a metal pipe - its internal diameter should be 10 mm, and the wall thickness should be at least 2 mm;
• wooden handle – you can make this part yourself.

Now let's look at our steps at work:

• We fix the steel pipe, which we will use as a supply tube, in the handle. This can be done using glue;
• We make the body and divider from a brass rod with a diameter of 20 mm. In the body you need to drill two radial holes with a diameter of 5 mm, 4 holes are made in the divider rod (diameter - 1 mm);
• assembly is carried out - the divider is pressed into the body with great interference. A flange is installed inside the housing with a gap so that the internal diameter of the housing is 0.6 mm larger. The gap thus obtained will inhibit the gas flow supplied to the igniter holes;
• a nozzle must be machined from a steel rod;

Advice! In order to make a thin hole in the metal, take a 2 mm drill and make a blind hole so that the tip does not reach the end of the metal 1.5 mm. A 0.4mm drill bit is then used to make the bridge. Next, the resulting hole is caulked with a hammer, after which the end is sharpened with sanding paper. This is done until a hole of the required cross-section is obtained, that is, until the nozzle can be placed on the tip of the threaded tube.

• a supply hose is put on the rear end of the tube and secured with a metal clamp;
• the operating pressure is set on the reducer and gas is supplied;
• wait until all the air comes out of the hose, then ignite the gas, bringing it into the flame of the gas burner;
• After this you need to sand the end. The flame on the burner should be 5 cm long;
• the housing with the divider is put on the external thread of the nozzle. The burner should produce an even flame without soot - to achieve this effect, you need to slowly rotate the body along the threads on the nozzle;
• the loose threaded connection is sealed with FUM tape.

That's all. We hope the material was clear and useful for you.

Video - Test of a roof burner with piezo ignition

Video - Portable roof burner (GZV) for collet cylinder