Since the first gas appliances and, until recently, their only connect steel pipes.
Now everything has changed dramatically: in everyday life have become part of flexible gas hoses, which have already largely replaced their outdated predecessors. They are much easier to use, easier and faster to connect to the backbone.
You do not know what type of hose pick from the proposed range of the market? Let's deal with - in the article describes the main types of products used for the connection of gas, marked their advantages and disadvantages.
We also give useful tips on choosing the best options for a flexible liner. Video tips and material is supplemented by illustrative photos depicting the hoses of various materials.
The content of the article:
Varieties of gas hoses
- Type # 1 - rubber and fabric
- View # 2 - rubber hoses in metallic braid
- View # 3 - bellows gas hoses
- View # 4 - oxygen hoses
- Features of choosing the best hose
- Reliable signs of forgery
- Instructions for a secure connection
- Conclusions and useful videos on the topic
Varieties of gas hoses
On the market there are many models of mobile connections. Among them are three main types of modern hoses for gas supply: rubber-reinforced bellows.
In the process of their production used a variety of materials that are different technical characteristics, operating conditions and lifetime. Each type of product has both pluses and minuses. Which of gas hoses should choose depends on the specific situation, the installation location of the household appliance.
Type # 1 - rubber and fabric
Rubber-hoses - the easiest and cheapest option. This soft rubber hose reinforced with a strong textile thread. They are quite unpretentious in use.
Rubber, used to make hoses, flexible complement components, extends the service life of up to 5 years. The material does not conduct electricity, well bent. However, over time it begins to crack, which is fraught with possible gas leaks.
Rubber-tubes should be marked with a yellow label glued. This means that they are intended for gas, not water
The advantages of rubber products: reasonable price and easy installation, flexibility and excellent electrical insulation, there are numerous models of different diameters and sizes.
But there are also disadvantages:
- high sensitivity to mechanical stress;
- Minimal protection against temperature variations;
- insufficient rigidity.
This type of liner is characterized by a high degree of risk. Even the dielectric abilities can not prevent natural wear rubber.
It is allowed to connect only to the gas cylindersBut subject to the replacement every two years in order to avoid unpleasant consequences. Positive feedback characterized by several brands of rubber hoses: IndustriasMateu, GasLink, Kuzuflex.
View # 2 - rubber hoses in metallic braid
This species is a reinforced hose of vulcanised rubber, braided steel filaments outside. The inner part made of polymeric materials.
The polymer is placed in the middle, susceptible to damage and destruction as well as tires. In addition to steel is a conductor of electricity.
Using the tube in a metal sheath, do not forget to block the gas taps. Such a measure extends the service life of reinforced products
When you connect these hoses must always be used additional insertion-insulators, positioning them between the liner and appliances.
Advantages of products:
- low price;
- ability to withstand high temperatures (up to 50 degrees);
- easy installation and operation.
Among the shortcomings should be noted questionable reliability inner polymer compounds and low electrical insulation.
Gas Reinforced devices can be easily distinguished from the water by the color of the outer sheath strands: they are usually marked yellow and their analogues for water - red and blue. At the moment, demand Ecoflex brands, GAS-FLEX, Fado.
View # 3 - bellows gas hoses
Flexible bellows-type device recognized as the most practical and safe mode of liner gas. This sealed sleeves of stainless steel and polymeric materials reinforced with corrugations repeating the shape of a ring or a screw. Its composition included wire through which a high pressure is maintained.
At the ends of the product is installed fittings of brass or carbon steel with threads provided with gaskets. Such elements are needed for direct connection to the equipment.
According to manufacturers, flexible bellows liner are made by analogy with the structure of the human intestine. That is why they are free to change the sizes. Repeatedly bending, stretching and becoming substantially longer hoses lose their original elasticity, durability and operability.
In practice, not advised to stretch the product by more than 50 percent of the original length, as this adversely affects its stiffness.
Reinforced elements are practically not subject to mechanical flaws and influence aggressive detergents are protected from stray currents. The unique design of the corrugations compensate for expansion and contraction of the metal upon heating and cooling
Simple models are presented in the form of a corrugated tube with a circular cross-section, more advanced protected by a special metal sleeve, and still have the product coated.
Can also consider the upgraded version - hoses equipped with thermal protector valve, shut-off the gas at the critical temperature rises. Corrugated tubes are available in a characteristic bright yellow color.
Their main advantages:
- safety and security;
- flexible, but relatively dense structure;
- extract a wide range of operating temperatures (-50... + 250);
- resistance to high pressure (up to 6 atmospheres);
- possibility of extension twice;
- durability (service life of about 30 years);
- Compatibility with any gas appliances and fittings.
Professional gasman believe that this kind of hose most closely corresponds to the European standards and is best suited for modern gas systems. But they have one significant drawback - the high cost.
Corrugated tubes are often connected to the open air, where devices are constantly experiencing the cyclical temperature changes. Proven manufacturers of bellows hose: Hydrosta, LAVITA, EMIFLEX, TuboFlex, Ayvaz.
View # 4 - oxygen hoses
There is another kind of podvodok gas - oxygen hoses. They are relatively inexpensive, have high strength to withstand high pressure (up to 20 atmospheres).
However, experts do not recommend highly to set the oxygen hose to the apartment. Now it is rare on the new equipment.
Oxygen hose characterized by one significant drawback: they can not serve as a constant-sleeved gas supply used to his instruments and equipment
Oxygen is used as a temporary hose connection option, for example, in the country to connect the gas cylinder. In this case, do not forget to buy and gas pressure regulator to ensure the safe use of the cylinder.
For each gas appliance to be used exclusively with the respective liner marking, supporting that the particular device is designed for gas. Apply when connecting gas columns or slabs water hoses is prohibited.
Features of choosing the best hose
Acquire sleeve liner for gas to household equipment in specialized stores, it is desirable that can provide a certificate of quality for each product.
In the assortment you can find models of different lengths. It is selected so that in the future do not have to dock a few tubes to each other.
The most commonly used tube 1, 1.5 and 2 meters. This reduces the risk of fractures and liner, respectively, increased danger for the residents of the apartment. If the length is not enough, the supply is supplemented by a metal pipe.
Another important indicator - sectional diameter. The minimum value that will provide good permeability and a full supply of gas to the appliance, - 10 mm.
The ends of the hoses are equipped with two bolts or a nut and the fitting. The nut has an internal thread fitting - outer. The thread is selected in accordance with access to the household appliance. If the output line, then use a special fitting corner.
Professionals advise fly hoses with sufficient length (on sale is sleeves to 4.5 meters). This approach allows you to choose any convenient place in the equipment, and simplify installation, free to perform installation without excessive tension
As a budget option will fit an ordinary rubber-and-canvas hose. By choosing this product, it is necessary to closely monitor the degree of wear.
In case of the smallest cracks, damage or smell gas, just to carry out replacement. When searching for the proposal, which would be optimally combined indicators of price and quality, it makes sense to stay on the reinforced hoses.
In order for all the gas burners reached at the plate in the desired amount, the diameter of the gas hose should be at least 10 mm. The larger it is, the better
If finances allow, it is better to take the bellows hose. It is recognized as the safest and most reliable device - officially approved for use with household appliances city gas service.
Stopping your choice on it, you need to check the type of connection. Its quality directly affects the durability of the product. It is undesirable to take the model in which the connector is connected to the flexi hose with glue. It is more expedient to find an integral or welded construction.
Reliable signs of forgery
Regardless of the type of flexible hose for gas before you buy, make sure the authenticity of the goods. The fact that the recent increase in cases of marriage and forgery, launched on the market by the Chinese manufacturers.
The objects of falsification tend to become well-known European brands. The difference in quality of the original and the fake is enormous.
Safe and high-quality product distinguished from counterfeiting possible.
To do this:
- devote time to careful visual inspection;
- check whether the technical characteristics to those specified in the data sheet;
- ask the seller to produce quality certificates, confirming the safety device, designed to work with explosives;
- not to buy goods at a suspiciously low price, uncharacteristic for this category of products.
dangerous chemical or radioactive impurities can be present in the structure of the counterfeit goods. Defective hoses are short-lived and often are the cause of the explosions.
Instructions for a secure connection
In the presence of at least minimal skills to connect gas to the instrument can be their own hands.
The work must adhere to the following rules:
- the length of the liner to choose based on the distance that is supposed to move equipment;
- positioning the device in a place accessible to visual inspection, not hiding it under the floor or in the wall;
- ensure that no other connections on the device (exception - the wire that performs backlight function in a brass plate cabinet);
- not stain the product, since it leads to rapid crack material;
- use gas-sleeved standard sizes specified by GOST standards;
- Electrolytic not provoke damage, connecting copper tips with steel (Safety coupling: steel, steel, brass, copper);
- Avoid twisting, bending and stretching a hose;
- not subjected to high temperature resistant compound (soldering, welding).
The MDU set common gas riser, which has branches with taps at the ends. They are present in each apartment and called the sinking.
Connect the gas to the stove is simple: quite a bit of free time and a minimum set of tools
At the first stage prepares the room and shuts off gas in the network. Then the equipment, whether it is a column or plate, is exposed to the installation site and carefully aligned.
Then you need to put the seal on the hose connection and fasten it to the valve on the standpipe. If the thread on the device does not match the diameter of the sleeve, need an adapter, which is also sealed. Next, the hose is connected to the equipment.
To connect the flexible hose itself need, ball valve, the seal (tape Fum, Loctite), screwdriver, wrench, and soap solution (water + soap or gel) and the brush
After testing for leaks connecting elements, the spigot. This is easily done using ordinary soap emulsion and a small brush.
If the connection is not tight, soaping will foam and bubble, and if everything is in order - no reaction occurs
Upon detection of insufficient density of connections is slightly unscrewed the tap handle and winding checked. The last step - diagnosis functionality of the equipment and the gas supply.
The right decision in the case of a lack of self-confidence - to turn to the gasman. Specialists will connect with all the rules that will guarantee a serviceable, safe and reliable service system for many years.
On our website there are detailed instructions on how to replace the gas hose and connect various gas equipment.
We suggest you familiarize yourself with these materials:
- Changing the gas hose with your hands: the rules of the installation work
- How to move a gas pipe in the apartment: transfer rules and tips on location
- Connecting a gas stove with his hands: how to step by step to install a gas stove in the apartment
- Wiring bypass gas boiler: how to bring the gas to the boiler
- Installation of the gas column in the apartment with his hands: the requirements and technical standards for installation
Conclusions and useful videos on the topic
Read more about the main types of flexible podvodok in the video:
Video instruction for connection to a gas stove:
The circuit connecting the gas column in the video clip:
Thanks to the universal flexible hoses made possible to refuse the connection of appliances to the gas pipes "tightly". The mobility of these devices greatly simplifies the life of the owners kitchen facilities, allowing relatively easily move the equipment for the purpose of cleaning, repair or permutation.
And what type of hose you choose to connect the gas at home? Tell us which of the liner advantages was the main reason for the choice? How long have you been using this hose?
Or maybe you see something wrong in the above material, or want to supplement the above-said his own opinion? Leave, please comment under this article.