Where should you install a gas valve in the kitchen? Gas valve in an apartment: which one to choose and how to change it

According to safety rules, the installation of a gas stove in an apartment should only be carried out by gas service employees or companies that are licensed to carry out this work. Gas hob must be registered, after which every 6 months service workers conduct a preventive inspection of this unit. That's why independent connection gas stove in accordance with the standards developed regarding gas equipment, you face a fine. But if you connect the gas stove with your own hands and do not use it, but call a specialist to check the quality of the connections and register the connection, then this option has a right to exist.

Before connecting a gas stove in an apartment, you need to complete several stages of work. Replacing a gas stove begins with its dismantling. Before changing the unit, you need to lowering valve was blocked.

After shutting off the gas supply, you can unscrew the (pipe) from the stove. Next, you need to loosen the lock nut located on the lowering clutch and unscrew the clutch itself.

Replacing the faucet

When replacing a faucet, if you decide to change the stove in your apartment yourself, you will need to be quick and accurate, since gas will flow out of the pipe into the room when the old valve is unscrewed. In this situation, there is nothing to fear if you follow basic safety rules (no open fire in the room, wide open windows).

Before starting the faucet replacement procedure, you should prepare the following:

  • small sizes piece of fabric to make a temporary plug for a pipe out of it - before plugging the drop, it should be well moistened with water;
  • ball valve , which will be installed instead of the old one, must be moved to the “closed” position and the handle removed from it (for ease of installation);

  • necessary wrenches and sealant for threaded connections.

Now you can start replacing the gas valve.

  1. It is necessary to open the window or window as wide as possible to ensure good ventilation of the kitchen.
  2. Unscrew the connected (old) faucet from the drop and quickly plug the pipe hole with a wet rag.
  3. If there is old sealant left on the thread where the valve was installed, remove it and wind a new one.
  4. Remove the “plug” from the rag and quickly screw the new valve onto the thread. Tighten the tap with a wrench using reasonable force.
  5. To check how tight the connection is, use soap solution. It should be applied to the joint. If you see inflating bubbles, this means that there is no tightness and there is a gas leak. In this case, you should unscrew the tap and apply a little more sealant, and then repeat the check.

Hose connection

The hose is connected to the tap using a similar method: a sealing material is wound onto the thread, the nut is tightened with a wrench, and the connection is checked for leaks (after closing the other end of the hose with your finger).

The flexible hose, after the installation and connection of the gas stove is completed, should not be hidden behind permanent panels or drywall. It must be easily accessible for inspection.

As a rule, when purchasing a stove, it is not equipped with a flexible connecting hose. How to properly connect a gas stove in such a situation? It's necessary buy in a special store, and when choosing, observe the following rules:

  • the hose must be solid (no joints are allowed);
  • to install a gas stove, the length of the hose must be selected so that there is no tension, that is, with a small margin;
  • It is not allowed that after connecting the gas stove there are kinks in any place;

  • installation of a gas stove must be carried out using a special hose - gas; connecting other types is prohibited.

The following hoses are available for sale, both rubber and with a metal casing:


To seal, before installing the gas stove yourself, you should put spacer washers made of paronitis, but not made of rubber. Either fum tape or Loctite 55 thread is wound onto the thread, which instantly seals the threaded connections.

If you are going to connect a gas stove yourself and have bought a gas-powered hob and an electric oven, then when installing a metallized hose you must use a dielectric coupling.

This is done so that if the metal braid accidentally touches the oven body when the installation of the gas stove is completed, electrical potential does not accumulate, which can damage the hose. The unit is connected in the same way, if as hob an electric stove is used, and the oven is installed, running on gas, or.

Rules for installing the stove

Before installing a (new) gas stove, it must be removed from the packaging. First, remove the cardboard protective box and pull it out from under the stove. wooden stand on which it was transported. Next, do the following.

  1. Remove all elements that come with the unit: baking sheet, wire rack, roasting pan, tray and others.
  2. Screw the legs that come with the device to the unit.
  3. Place the device in a prepared place. Installation requirements require leaving a small gap from the wall to properly connect the gas stove.
  4. When installing the unit, you must use building level for precise horizontal positioning of the device. Adjustment is made using twist-out legs, which allow you to accurately position the installed unit in a horizontal position.
  5. To connect a gas stove with electric ignition, there must be a grounded socket.

For clarity, the figures below show a connection diagram for a gas stove.


Using these recommendations and the diagram, you can do it yourself by connecting not only the gas stove Hephaestus, Lada, Zanusi, Mora and Darin, but also another model. It should be remembered that only when correct connection of this device to the gas pipeline in the apartment, subject to all requirements, is possible. Well, to document the safety of the installation, you need to call a specialist from the relevant service. In the absence of a stationary gas pipeline, it is possible.

Replacing a gas tap is one of the most common operations during repair work with gas communications. As a result of long-term use, the valve wears out, which leads to gas leaks.

Solving the problem with the help of specialists

Leakage is one of the most dangerous problems that residents can face. If you smell gas, you need to check the tightness of the faucet using soap foam, which must be applied to the pipe connection and valve. If the foam bubbles, this place there is a leak. In this case, you should immediately seek help from specialists to replace worn parts of the system.

To solve the problem you need to prepare:

  • gas tap (you must first call service company and find out the need to purchase it);
  • documentation (gas supply agreement, technical passport).

Step by step instructions

  1. Contact specialists from the service supplying gas or licensed for this type activities of a private company. You should tell us over the phone about the nature of the problem and leave a request.
  2. Purchase a faucet from a store that specializes in this group of products. It is recommended to buy a ball valve (nut-nut), since such a device has proven itself to be reliable and has a longer service life compared to its cork competitor.
  3. Before the specialists arrive, prepare a gas supply contract and a technical passport.
  4. Let the gas in the pipe burn out. To do this, light the gas and turn off its supply with the tap near the gas meter. You should wait for the flame to die out completely. This operation will save time, since specialists will not begin work until the gas burns out.
  5. Before starting repair work, you need to ventilate the room. It is recommended to create a draft - this way the gas will disappear faster.
  6. When carrying out work to replace the crane, it is advisable to be close to the repairmen. This must be done in such a way as not to interfere with their work, but at the same time control its quality and monitor compliance with safety regulations.
  7. After the device has been replaced, you and the employee should check it for leaks by turning on the burner in test mode.
  8. The employee must make a note in the documentation about the work performed and affix the seal of the service organization.
  9. It is recommended to leave the windows open for about half an hour, as the room should be well ventilated.

DIY faucet replacement

To replace the tap with your own hands, you need a tool (gas wrench), a gas tap and FUM tape (you can also use special compounds to seal threaded connections). All of the above can be purchased in specialized stores or construction department stores. It is more convenient to replace the gas tap with an assistant.

It should be noted: the gas pipeline has relatively low pressure (unlike, for example, a water supply). Based on this, there is no need to shut off the entire gas network. However, safety measures still need to be taken. First of all, the window must be open when carrying out work. The doors to the kitchen should be tightly closed, and the cracks should be plugged with rags or towels.

We begin the work by dismantling the used gas tap. We remove it using a gas wrench. As soon as the faucet is removed, plug the pipe with a pillow thumb. At this time, the assistant screws FUM tape onto the new faucet or applies it to threaded connection sealant.

Please note: before screwing the FUM tape or treating it with a sealing compound, the connection must be cleaned of dirt, dust and traces of corrosion.

When everything is ready, carefully, but without wasting time, connect the gas valve to the pipe. Before screwing in the new faucet, you need to make sure that it is in the “closed” position.

Next you need to make sure the connection is tight. To do this, use the old proven method with a soap solution. A soapy solution should be applied to the connection and if bubbles appear, the connection will leak. The defect must be corrected immediately: remove the tap and repeat sealing the connection.

At the end of the work, you should thoroughly ventilate the kitchen area and connect the gas stove to the system. Even in the absence of professional skills, the operation to replace a gas tap takes no more than 15 minutes. The advantage of doing the work yourself is significant savings funds. However, if you are not sure about own strength, it is better to entrust this work to specialists from the gas supplier’s service department.

Replacing the tap in a gas cylinder

Any work during which the seal may be compromised must only be carried out by qualified specialists. Carrying out such actions (dismantling and installing locking devices) on your own is dangerous. Although it should be noted that there is nothing particularly complicated in this operation.

Pay attention! In the factory, the threaded connection is sealed with paint. If you do the replacement yourself, you can use FUM tape for gas as a seal.

Dismantling and installation of locking devices on cylinders is carried out with a special mechanical key for screwing in and out of valves. If it is missing, it is allowed to replace the locking devices manually.

Pay attention! Risk of explosion of a heated gas cylinder in in this case is absent, since mixtures of fuel vapors with air are explosive.

There are no such mixtures in the cylinder; it only contains gas vapors. However, when heating the cylinder, you need to monitor the pressure; it should not exceed the permissible value.

The locking device is installed using a torque wrench, the tightening torque for steel valves does not exceed 480 Nm; for brass valves this figure should not exceed 250 Nm.

Technical parameters of valves used for installation on liquefied cylinders natural gas(propane/butane) are:

  • valve VB-2 with maximum operating pressure - 1.6 MPa;
  • nominal diameter - 6 millimeters;
  • dimensions: 61x54x105 millimeters.

Before replacing the valve, condensate should be drained from the cylinder (this recommendation is often ignored). It is necessary to drain the condensate away from your home, as it has a very unpleasant and persistent odor.

The gearboxes in the cylinders are designed in such a way that they cannot be disassembled. They are not adjustable or repair work. Gearboxes must be replaced at least once every 6 years. It is recommended to check the hoses for leaks every time the cylinder is replaced, but at least once every six months. In this case, it is advisable to install multilayer and reinforced hoses.

All operations with gas equipment are dangerous if they are not carried out by a specialist. Therefore, any independent actions to replace gas taps are carried out at your own peril and risk.

The gas pipeline suitable for the kitchen stove or boiler in the apartment must be equipped with a special valve. It is necessary to shut off the flow of gas in the event of a leak, prolonged absence, or installation of new equipment. The gas valve needs to be replaced periodically because over time its shut-off mechanisms wear out and begin to leak fuel. Before purchasing, read the recommendations of experts who will help you make the right choice.

Basic parameters

Shut-off valves are an essential element of a gas pipeline, which is used both on external pipelines and on internal systems ah, only the diameter and size are different. For domestic gas pipelines in an apartment or private house, a gas ball valve with a diameter of 2-1/2 inches is used.

A separate valve is installed for each source of consumption - if a boiler and gas stove are installed in the house, there must be at least 2 taps.

If bottled (liquefied) gas is used, shut-off valves not required. The cylinders already have a valve installed that regulates the fuel supply.

When selecting optimal option There are several factors to consider. There are 2 types of valves:

  1. Cork products. The design contains a conical part and a flywheel, which brings the first into operation. The plug is equipped with a hole; when connected to the pipe connector, it facilitates the flow of fuel to the equipment. The oil seal in this case is used as a seal.

  1. Gas ball valve. Here all the work is done by a metal ball, which plays the role of a locking part. The ball has a passage hole for venting gas to the equipment. This happens by turning the flywheel. The devices are considered the most reliable, which is why they are most often used in domestic conditions.

A plug valve is characterized by a loose connection and a shorter service life. Today they are no longer used.

It should be noted that the second version of the gas valve is divided into subtypes according to the fixation method:

It is used for household gas pipelines and has a small diameter. The connection to the pipe is made through a thread. The crane is collapsible.

Scope of application: pipelines of increased diameter. The connection is established by assembling the flanges with bolts. Collapsible design.

Used for large pipelines with a diameter of up to 70 mm. Welded to the main line, dismantling is not allowed. Can only be used once.

With a threaded and flanged connection, you can easily replace the gas tap in your apartment with a new one or remove and install it back several times. The welded valve is installed only once.

VIDEO: Ball valve design

What to consider when buying a gas tap

To buy a high-quality standard or corner gas valve, you need to pay attention to the following nuances:

  1. Cut size pipeline system, hoses and threaded area. The gas supply pipe has a certain diameter; a valve must be selected taking this into account. This is done to ensure that the device hermetically closes all gaps. Otherwise, you will need to purchase additional adapters and adapters.
  2. Material. Cast iron products have the longest service life, so they are recommended by experts. In addition to these options, manufacturers offer polyethylene gas taps, zinc, and silumin.
  3. Integrity. Since tension gas valves are sold in large quantities, during transportation they may receive various defects in the form of chips and cracks. Factory defects in the form of sagging are also common. This informs about non-compliance with government regulations during the production process.
  4. Manufacturer. To avoid falling for a low-quality fake, it is recommended to give preference to well-known brands. A Polish company should be included among the responsible manufacturers Broen Ballomax, the German company Dungs and Bugatti.

VIDEO: How to spot fake Bugatti taps

Installation of shut-off valves

Depending on the type of locking element, you can install it yourself without the involvement of specialists. To do this, you need to study in detail how to change the gas tap in an apartment and prepare all the necessary tools.

To work you will need:

  • new threaded type gas valve;
  • 2 wrench- one for screwing in, the second for holding the pipe in a stationary position;
  • graphite lubricant for gas valves;
  • linen thread;
  • stub.

Installation steps:

  1. Before changing the gas valve, you must first shut off the gas supply to the kitchen, boiler room or other room where work is planned. Turn the valve lever to the closed position.
  2. Unscrew the tap from the outlet pipe. If the actions are difficult to carry out, you need to treat the joint area with WD40. This component will ensure smooth running. If the house has a welded element, then it is cut off using a grinder, after which a new thread is created on the pipe.
  3. At the time of completion of dismantling, the pipe should be quickly closed with a plug. If the work is done together with a partner, you can do without the locking part and ask to cover the exit with your hand.
  4. The threaded part is wrapped with linen thread to improve sealing, and then lubricated with graphite.
  5. Next, a new gas valve is screwed on.

During installation work, open windows and doors in the room, and also turn off electrical equipment. The best option will happen if you turn off the electric meter before installation. This will ensure safe conditions to complete this task.

How to check a joint for leaks

The final stage of installing a gas tap is to check its connecting connection for leaks. To do this, prepare a concentrated soap solution to lubricate the gas valve on the boiler, or more precisely, the area where it is fixed to the pipe.

The soap must be as foamy as possible, otherwise it will be impossible to detect a leak if it occurs.

Next, open the valve so that gas begins to flow from the gas pipeline and carefully observe the process. If the element itself or the junction allows fuel to pass through, the soap solution will begin to foam. Here you will need to turn off the gas supply, remove the shut-off part and install it again.

A few words in conclusion

Experts do not recommend using welded type cranes. Despite enough robust construction, if an error is made, welding may leak gas, and to solve the problem it will be necessary to carry out the work again, but with a new valve. Therefore, it is better to give preference to threaded variations.

Remember! Carrying out self-installation It is considered a very risky and unsafe activity. If you do not have the necessary experience, it is recommended to contact gas workers, especially since the price for their services is reasonable - 300-500 rubles.

VIDEO: How to replace a gas tap

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Gas pipes in the kitchen: is it possible to redo the supply to the stove?

This article is an attempt to clearly explain that a resident apartment building can do it with his own hands with the internal gas pipeline in his apartment. I will pay attention to the restrictions set out in regulatory documentation, and I’ll tell you about my own practical experience regarding how and with what you can move the gas pipe in the kitchen. So, let's go.

Hands off!

First, about the prohibitions. Yes, dear reader, I have no doubt that you are full of enthusiasm and eager to carry out the transfer gas pipe in the kitchen on your own. However, please take the restrictions I have listed as seriously as possible:

  • You cannot move the gas riser in the kitchen. All you can do is change where the tap attaches to it or the length of that tap;

  • You cannot use polyethylene or other materials indoors. plastic pipes . SNiP 2.04.08-87 in paragraph 4.85 directly states that polyethylene is prohibited for laying in residential buildings, and in paragraph 6.2 it states what materials should be used;

Excerpt from SNiP: gas pipelines made of steel pipes should be installed inside buildings and structures. To connect gas appliances, it is permissible to use rubber or rubber-fabric hoses (read: reinforced gas hoses). However, it is still recommended to use hard eyeliners.

  • It is impossible to block common cork, ball valves and valves on gas supply inlets and risers. If someone is cooking while you turn off the gas, the fire will go out, and after starting it will continue to flow into the kitchen. The result of such a development of events is usually described in TV reports by random witnesses: there is no one among the residents to tell about it;

Captain Obviousness suggests: for any work related to disconnecting the riser and carried out by gas service specialists, it is necessary that the residents of all apartments be at home. When launched, all residents are notified about it personally.

  • Finally, the main thing: PB (safety rules) 12-368-00 prohibit any gas-hazardous work carried out by persons who have not undergone training and examinations safe methods conducting work.

Simply put: only a representative of Gorgaz or a licensed gas equipment servicing company should connect any gas appliances.

What will happen

If you are fabulously lucky and you, without having necessary knowledge and practical experience, prevent gas leaks; your initiative will be revealed during the first scheduled inspection of gas equipment by representatives of the gas service.

The consequences are unpredictable: they can either turn a blind eye to the work you have done or draw up a report on an administrative offense that endangered the life and health of people.

Worst case scenario... Comrades, I won’t spoil your mood. Everyone knows what a gas explosion in a residential building is.

A drop of tar

There are two reasons:

  1. Deadlines. Drawing up a project and its approval may take three to four months;
  2. Price. The project together with the work will cost from 10 to 40 - 50 thousand rubles.

Just shh

So, what to do if you still really can’t wait to move the gas stove or shorten the gas pipe outlet?

Theory

No, no, mon ami, don’t rush to pick up the keys and hacksaw. First, a little tedious, but necessary to familiarize yourself with the regulatory requirements.

The standards for gas pipes in the kitchen are set out in the document I have already mentioned - SNiP 2.04.08-87.

  • Gas distribution in a residential building must be carried out mainly on welding. Threaded and other detachable connections are permissible only at connections to shut-off valves, gas meters and consumer devices;

From a practical point of view, this means for us that the internal gas pipeline in the apartment cannot be assembled from pieces. It’s really not worth climbing to a gas pipeline with welding without being able to completely turn it off.
One more nuance: this paragraph of SNiP does not completely prohibit the use of dismountable connections, but only recommends refraining from them.

  • All detachable connections must be performed in places accessible for inspection and repair. In a non-separable kitchen furniture there is no need to hide them;
  • The gas pipe must be laid, as a rule, openly;
  • If there are several gas consumers, shut-off valves must be installed in front of each of them;
  • In places where people pass (for example, above or in the hallway), the gas pipe must pass at a height of at least 220 centimeters. What the instructions are related to - I think there is no need to explain;
  • It is recommended to paint steel internal gas pipelines to protect against corrosion. At the same time, the decor of the gas pipe in the kitchen or hallway must be waterproof.

Practice

After the tap

First and foremost: in the vast majority of cases, there is no need to saw or cut anything. To move the slab, it is enough to extend the line between it and the shut-off valve. To hide an untidy steel liner, you can simply build a cabinet around it (of course, collapsible or with wide-opening doors).

How can you attach a stove or other gas appliance without violating SNiP regulations?

Corrugated stainless pipe. In this case, the key requirements will be met:

  • The line to the device will be rigid (corrugated stainless pipe obviously has nothing to do with hoses);
  • The wiring will be done steel pipe. Who will say that stainless steel is not steel?

When the corrugated stainless pipe has not yet appeared on Russian market, I successfully transferred gas stoves oxygen or acetylene hose on steel or brass fittings.
An aluminum clamp for a screwdriver was used to secure the hose to the fitting.

Stainless steel connections are mounted on compression fittings: the pipe is inserted into the fitting with a loosened union nut, after which it is tightened and compresses the pipe with a silicone seal.

The threads on the connections of the fittings with the stove pipe and the tap are wound with FUM tape.

When starting up, all detachable connections must be checked for gas leaks: soap foam is applied to each of them with a shaving brush. If it bubbles, the connection needs to be rechecked.

Do not check connections with a lit match. It's not a matter of safety: for a gas to explode, it needs to be mixed with air in sufficient concentration.
The fact is that in low concentrations, with minor leaks, it simply will not ignite.

Replacing the faucet

Gas plug valves Soviet-style They are not particularly easy to use and require regular maintenance. In particular, the plug must be generously lubricated. The lubricant fills the grooves, preventing gas leaks, and reduces the force required to turn the plug.

Is it possible to change the faucet yourself?

If so, the rate of gas flow from the pipe will be minimal, and the pressure will not interfere with installing a new valve instead of the old one.

The replacement algorithm looks like this:

All work is carried out only with the circuit breakers in the electrical panel turned off and the windows wide open.
Violation of this simple and clear rule can lead to a gas explosion.

What should I replace the gas tap with? On a modern cork. Its purpose specifically for gas is indicated by the yellow markings on the handle.

Thread cutting

How to cut and thread a gas pipe in the kitchen?

If safety rules are properly observed, this work is no more dangerous than the previous one:

  1. We prepare the tool - a hacksaw for metal, a coarse file and a die according to the diameter of the pipe (as a rule, the connection to the plate has a size of DN 15). In addition to the tool, you will need FUM tape and any lubricant - up to motor oil or diesel fuel;
  2. We make a wooden or rubber chopper according to the size of the pipe. Its dimensions should not prevent you from cutting a thread on the outer surface of the cut liner;
  3. We cut off power to the entire apartment. Precisely with automatic machines, and not with switches and cords pulled out of the socket. Any accidental spark can lead to fatal consequences;
  4. We open all the windows in the apartment wide;
  5. We disassemble the squeegee, remove the tap and insert the chopper in its place;
  6. Using a file, remove the outer chamfer on the pipe at an angle of 15 - 20 degrees to its longitudinal axis. This will be the approach for the die;
  7. Lubricate the approach and the first few centimeters of the eyeliner;
  8. Place the die with a guide frame onto the eyeliner;

  1. Pressing it to the pipe, we make an entry and cut five threads;
  2. We wrap the thread with FUM tape;
  3. We take out the cap and immediately screw the tap onto the thread.

Conclusion

Comrades, I remind you once again: working with gas equipment is an area where amateur activity is truly dangerous. Just don't forget about it. As always, the video in this article will bring to your attention additional materials. Feel free to share your own experience in the comments. Good luck!

Shut-off valves are a mandatory element gas pipelines, and it is used both for external highways and for internal systems. As a rule, a ball gas valve with a diameter of 2 - 1 2 inches is used for domestic gas pipelines.

Below we will take a closer look at the features of these devices and their difference from water taps.

Peculiarities

So, special ball valves have recently been used in gas pipelines. These devices are designed to completely shut off or open the gas flow. The peculiarity of these devices is the locking mechanism, which is made in the form of a ball with a through hole. Moreover, the diameter of the hole coincides with the diameter of the pipeline ().

To block the flow, the ball is rotated so that the hole is perpendicular to the pipeline, i.e. it needs to be rotated 90 degrees. The locking mechanism is controlled using a lever. Tightness is ensured by rings made of soft and durable materials.

Ball valve with a diameter of 3 - 4 inches

Differences from plumbing fittings

It must be said that the external difference between a gas tap and a water tap is that the lever has yellow, not red.

There are much more structural differences:

  • They have a more durable body, which is made of special types of steel or brass with a high copper content.
  • They have a longer connecting thread.
  • The locking mechanism is made of particularly durable chrome-plated or nickel-plated material.
  • The rod is made of durable polymer material.
  • These taps can withstand greater pressure than taps.
  • O-rings are stronger and provide a better seal.

Pay attention! Despite the fact that the price of gas taps is higher, they cannot be replaced with water fittings, since the savings can be very expensive. But it is not prohibited to use gas shut-off valves instead of water valves.

In general, the only difference between a gas tap and a water shut-off valve is the increased level of tightness. The remaining points are not so important in domestic gas pipelines. Therefore, in principle, any valve that meets tightness class “A” can be used for a gas pipeline.

Features of application

As a rule, shut-off valves for gas pipelines are installed in the kitchen, i.e. where it is used gas equipment. Moreover, a separate valve is installed for each source of consumption.

For example, in houses and apartments where gas stoves and water heaters or boilers are installed, I install separate gas taps for stoves and for other devices. In addition, one common valve is often installed at the inlet, which allows you to completely shut off the gas supply.

It must be said that shut-off valves are used not only to shut off the flow, but also to control it; for example, a gas three-way valve allows you to redirect the flow from one pipeline to another. True, such devices are not used in everyday life.

Advice! When supplying a home with bottled gas, there is no need to install general shut-off valves, since a valve is always mounted on the cylinder to shut off the gas.

Types of ball gas valves

In addition to the fact that the shut-off valves in question differ in diameter, the differences lie in the installation method. The following types of devices are most often used in gas pipelines:

Threaded (coupled) They have a small diameter. As a rule, these products are used in domestic gas pipelines. The connection to the pipeline, as you might guess from the name, is made using a threaded connection.
Flanged Used in external gas pipelines large diameter. The connection is made using a flange method using bolts. Like threaded ones, these devices are collapsible, i.e. they can be dismantled and then reinstalled.
Welded Like flanged ones, they are used for external gas pipelines. Their diameter can range from 10 to 70 millimeters. The connection to the pipeline is made by welding. Accordingly, this installation option is non-separable. The advantages of such products include complete tightness and high reliability. In addition, welded shut-off valves do not require maintenance, i.e. tightening flange connections.

Advice! In addition to ball shut-off valves, there are also plug valves. However, they have less reliability and durability, so they have been used very rarely recently.

In the photo - welded shut-off valves

Manufacturers

Gas pipelines are one of the most critical systems for providing housing. Therefore, special attention must be paid to the selection of all its elements, including shut-off valves.

It is advisable to purchase products only from well-known, well-established manufacturers.

In particular, you can give preference to cranes from such Italian companies as:

  • Bugatti;
  • Valtec;

In addition, they differ good quality products from the following companies:

  • Dungs - Germany;
  • Profactor - Germany;
  • Broen Ballomax – Poland;
  • Efar – Poland;
  • LD – Russia.

Advice! You should not buy the cheapest gas valve, since there are a lot of low-quality fittings from China on the market, which do not always meet all the requirements for gas shut-off valves.

Features of replacing a gas tap

Sooner or later, any shut-off valve may fail; in particular, gas taps are not immune to failure. If a malfunction of this device is detected, it must be replaced immediately.

It should be said right away that doing this work with your own hands is prohibited! However, you still have to perform some actions yourself.

So, the instructions for replacing this shut-off valve are as follows:

  • First of all, you need to report the problem to specialists from the gas service or private organization, which has a license to perform such work.
  • Then you need to buy a new faucet from a specialty store. You must first measure the diameter of the pipeline so as not to make a mistake when choosing a product.
  • Before the arrival of specialists, you should prepare a technical passport and a gas supply agreement. A technical passport is needed to make notes on the work performed.
  • Then you need to light the gas on the stove and turn off the central valve. The burner should be left until it goes out completely so that all the gas leaves the pipeline.
  • When specialists arrive, you need to open several windows to create a draft in the room. This is necessary in case of a gas leak.
  • After completing the work, you should, together with specialists, check the installed shut-off valves for leaks.
  • At the end of the work, you need to provide workers with services technical passport and ask to add a note there.

Advice! You can detect gas leaks using soap foam. It must be applied to the connection points between the device and the pipeline, as well as to the valve itself. If a soap ball forms in some place, it means that the shut-off valve is leaking gas.

After completing the work, you should leave the windows open for another 15-30 minutes, which will ensure complete ventilation of the room.

Conclusion

Currently widely used in household and industrial gas pipelines. This is due to the fact that they are reliable and durable. The only thing is, when choosing which gas tap is better, you should give preference to more expensive devices from well-known manufacturers, since cheap products may not meet the required quality.

You can get some additional information on this topic from the video in this article.

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