As you know, liquefied hydrocarbon gas (propane-butane) is stored in cylinders or gas tanks under a pressure of several bar. In order to reach the performance indicators of consumers (30-50 mbar), a special device is used in autonomous gas supply systems for private facilities - household propane reducer. If we draw an analogy with electrical network, this device performs the function of a stabilizer, that is, it reduces the pressure to the required value and automatically maintains it at the same level.
Any propane reducer includes the following components:
The throughput of this device depends on the degree of opening of the valve, which is affected on the one hand by the membrane and the pressure spring, and on the other by the gas and the locking spring. The higher the pressure of propane in the cylinder and the lower the flow of gas-using equipment, the closer the valve is located to the seat. Conversely, as the chamber pressure drops and the flow increases, the valve opens more. The operating parameters of a household propane reducer are determined by the stiffness of the springs and the elasticity of the membrane. Some models are additionally equipped with a valve whose shaft is connected to a pressure spring, which allows you to manually adjust the gas supply in a certain range.
The principle of operation of the device:
The choice of a device for supplying a propane-butane mixture to gas-using equipment is based on two key parameters:
Sample passport for a gas stove
The operating mode of most household propane appliances is 30 mbar, 37 mbar or 50 mbar. Based on this indicator, an appropriate gearbox is selected. If its output pressure differs from the operating parameter gas stove boiler or, for example, a grill, this may cause the equipment to malfunction and even create an explosive situation.
The characteristics of the propane reducer can be viewed on it - 3 kg / h and 29mbar
30 mbar, 1.5 kg/h (kg/h)
For stable and safe operation of the gas consumer, it is also important that its consumption does not exceed the performance of the gas reducer. In this case, the upper level of the reducer flow rate is not standardized. That is, for a boiler with a power of 24 kW with a mass flow rate of 2 - 2.5 kg / h, it is permissible to install a gearbox with a capacity of 3 kg / h and above - the automation of the boiler or stove will still not let the "extra" gas through.
For reference:
1 kg ~ 1.9 l ~ 0.45 m3 (for propane - butane)
1000 Pa - 1 kPa - 10 mbar
30 mbar - 0.03 bar
1 bar-0.99 atm.
Some owners of autonomous gas supply systems make a mistake when they purchase industrial gearboxes instead of household ones, considering them to be more reliable. Firstly, such devices are much more expensive, and secondly, they are designed to work with more powerful gas equipment, so they are not always consistent with household appliances.
You should also pay attention to the type of thread of the device. Gearboxes designed to work with non-flammable gases are equipped with a right-hand thread, and with combustible gases they have a left-hand thread and a risk on the nut.
To connect a propane reducer to gas-using equipment, two methods are used: using a herringbone fitting or using a threaded connection. The first option is considered the simplest and is often used to connect a cylinder to a gas stove. The second method is more reliable and aesthetic, in addition, it allows you to connect one propane tank to several consumers at once.
Connection via fitting
Whichever option is chosen, in the process of connecting the gas reducer and starting the system, you must follow the following instructions:
It should be noted that the device is intended for operation in a temperate climate, therefore its use is permissible at temperatures from -15 to 45 degrees Celsius.
An example of connecting a propane reducer in a group cylinder installation
A well-made household propane stabilizer can last more than one year without serious repair intervention. Only rubber materials that lose their elasticity over time are subject to periodic replacement. You should also inspect and, if necessary, clean the bypass valve 1-2 times a year. The degree of clogging of the gas reducer directly depends on the purity of the propane-butane mixture used. For example, you can familiarize yourself with the standard forms of delivery of this high purity mixture in accordance with GOST. If high quality gas is used, then the service life of shut-off and control valves and gas-using equipment will increase significantly, and the probability of sudden failures of the autonomous gas supply system will be minimized.
Hello dear readers. Do you know what a gas reducer is for? Where can it be applied and what are its types?
When people live where there is no central gas pipeline, they are forced to use a gas cylinder. It is filled with butano-propane composition. In industrial conditions, the fillers are different, such as acetylene, methane and hydrogen. They have and domestic gas there is a similar feature - explosiveness. And in order to regulate and secure the release of substances from such a cylinder, special adapters are used - reducers. That's the main fixed annuity interest rate reason why you need a reducer on a gas cylinder.
Other reasons why you need it are as follows:
Why do we need a gas reducer - to control the outgoing substances, safety, etc. And what is the principle of its action? The principle is:
Substance comes from the main tank. There it is kept under pressure of more than 150 atm. When it is sent to the pipeline and to household appliances, the payday loans gallatin tn reducer brings the pressure parameter to a minimum. The range of values is determined by the type of equipment. Usually it is 10 - 70 atm.
For example, for the operation of a household stove, a gas pressure of 1 atm is sufficient.
Types of gearboxes differ in the following ways:
There are household and industrial types. The second is equipped with manometers.
Since the value of the reducer for the gas tank is large (both safety and stable operation, etc.), the question of whether a reducer is needed for a gas cylinder disappears instantly.
And when choosing a device, one should take into account the correspondence of its dimensions to the needs of the equipment connected through it.
Cylinders with these devices are placed in the house or outside. In the first situation, the room should have the option of rapid ventilation in case of a dangerous situation.
The outdoor version is safer.
Types of devices according to such a criterion as the passed gas:
What gearbox is needed for a gas cylinder? The answer is item 4.
Versions rated for other gases must not be used for liquefied hydrocarbon mixtures.
The characteristics of the device must have equal parameters with the cylinder and the apparatus on which it is mounted.
Of great importance is the competent setting of the power of the outgoing gas streams. When the parameters exceed the allowable values, automation in modern gas technology turns it off. If there is no such protection in the technique, an accident may occur.
Also, gearboxes must be certified.
There are such standards for connecting to a gas tank (threaded):
A standard flexible hose can be used for connection. The fitting of the device is wetted with water. A screw clamp is used to fasten the connection.
A threaded adapter is used to connect bellows hoses. It is screwed in instead of the fitting. After that, a check takes place - gas is passed when the pmi 2013 devices are not turned on. The gas flow valve is unscrewed and the control screw is turned out. The spring is extremely weakened. When the pressure gauge reflects a gradual development of pressure, the device is not suitable.
Having assembled the system, you need to arrange the flow of gas from the tank to the reducer. It is necessary to rotate the adjusting screw, assign the optimal pressure at the outlet section. The contact points are wetted with a soapy composition. This is a gas leak test.
As already noted, gearboxes can be domestic and industrial. Also universal models.
Consumer versions may not be customizable.
These are simple models. They are used in everyday life and play and earn money in nature. Together with home gas cylinders, RDSG products are mounted. They have a very simple design. Due to this, gas can only be used in household stoves. These products are inexpensive and very reliable. There is also a Frog-type gearbox, there is a model. They should only be used in cylinders with a volume of 12 - 50 liters.
The class of universal custom reducers has more complex structure and more potential. This is an excellent option for domestic use and for work in the home workshop. Products are attached to the cylinders by a threaded method, fixed securely.
They have a pressure gauge and a setting screw that allows you to vary the functional pressure within 0 - 0.3 MPa. Their highest throughput potential is 5 m 3 /hour.
Some modifications have two pressure gauges. They reflect the input and functional pressure.
Often, many summer residents and hikers ask questions such as: do I need a gearbox for a gas burner? And do you need a gearbox for cash advance businesses of a gas stove in the country? Stable and safe operation of any gas appliances and in any conditions is always necessary. Even if there is no urgent need for gearboxes, it does not hurt to make sure. It remains to decide which gearbox is needed for a gas stove.
Since the stove and burner run on propane, a propane reducer is needed. You need to pick up these products by examining them and comparing their characteristics. Of these, the key ones are:
For example, if you plan to connect a desktop portable stove only on weekends, according to your calculations, the gas consumption is 5 liters per month, then you need a 5-liter tank and a Baltika RDSG-2 reducer.
For a static stove with an oven, a capacity of 27 or 50 liters is required. Suitable gearbox - Frog RDSG-2.
Here questions often arise - what does it do at all? Why is it so named? What is its purpose?
Why do you need a frog gas reducer? Its functions, like other gas reducers, are pressure stabilization, safety, etc.
Why frog? This device is straight. In it, gas flows through the fitting. The valve opens and is pressed against the seat by a spring. Gas with high pressure does not enter the chamber. The diaphragm forces the valve out of this seat. The pressure is gradually reduced to the working values of the device to which the reducer is mounted.
The spring straightens out. The valve is detachable from the seat and does not interfere with the gas flow. When the pressure rises, the spring presses the valve again, gas does not flow. This principle is reminiscent of jumping frogs. Yes, and the shape of the device is similar to it.
If it is necessary to connect a composite container to a thermal umbrella, it is better to use imported products with a KLF connector
Ideal for gas welding in the home workshop professional model BPO 5-3 Krass. It guarantees a maximum flow rate of 5 m 3 per hour and allows you to adjust the working pressure up to 0.4 MPa. And for this task, she has a flywheel and a pressure gauge. Thanks to the latter, it is possible to scrupulously assign pressure to the needs of gas welding equipment.
Today, many owners use a heat gun to heat rooms or small houses.
It can also be attached to the balloon. And here the question may arise - why do we need a gas reducer for a heat gun?
The fact is that pressure drops are extremely dangerous for such an apparatus, especially its increased jumps. This is fraught with a rapid explosion. And here it is simply necessary to stabilize the gas flows and their pressure. This needs to be much higher than in the case of burners.
Attaching the gun to the balloon is easy. Connection method - gas hose. Its minimum length is 3 m. The optimal pressure is assigned to the gearbox, usually 1.5 MPa.
The container and gun are connected by this hose and union nuts. Under them lay paronite gaskets. The balloon position is vertical only. The valve opens only after its installation.
Why do we need a HBO reducer and what are its types? This is a special device that converts a liquefied mixture, which is under powerful pressure, into a vaporous mixture. And this mixture can be safely added to the engine.
There are usually 1-4 generations of this gearbox on the market. Each process comes with its own characteristics. The stable coordinated operation of the car depends on the level of adjustment and operation of the device. This is also the answer - why do you need a gas reducer on a car?
It was dismantled here why you need it, the meaning of the gearbox for the heat gun and the car. In fact, these are the same tasks - the normalization of gas pressure and maintaining the stable operation of the equipment.
The reducer for the gas cylinder is designed to lower the gas pressure at the outlet of the gas container to the working one and automatically maintain this pressure at a given level. Under the terms of GOST 13861, gearboxes are classified:
They differ in the color of the housing and the connecting devices for fastening. Main parameters:
The price of a gas reducer for a cylinder is determined depending on the configuration, technical parameters, accuracy class of the device, country of manufacture. You can buy a reducer for a gas cylinder with one or two pressure gauges. If there is only one pressure gauge, then it can be used to set a fixed outlet working pressure. The presence of two pressure gauges allows you to control the pressure in the gas tank and supplied to the consumer.
These devices are designed to be used with gas burners and other gas equipment operating with a higher outlet gas pressure. For example, BPO 5-2 can be installed on household gas vessels with a volume of 5 to 50 liters with a valve. This model is equipped with a pressure gauge and a valve to regulate the outlet gas pressure. Specifications BPO 5-2:
Instruments with adjustment function are also available for compressed gases.
These products are designed to reduce and automatically maintain the vapor pressure of liquefied petroleum gas within a given range. They differ in the way they are attached to gas vessels. For vessels (volume 5 l, 12 l, 27 l) equipped with a valve, a propane reducer RDSG 2-1.2 (9), 16/3.6 atm, fitting 9 is used. which is released after landing. For gas vessels with a volume of 50 l, equipped with a valve, propane reducers RDSG 1-1.2 (9), 16 / 3.6 atm, fitting 9 are used, where the connection is made by means of a cap nut. A disposable gasket is installed between the fitting and the nut. The reducer for the composite gas cylinder complies with European safety standards, has a built-in strainer, and is designed to be connected to the valve of a gas composite vessel according to the German KFL standard. Adjustable reducers are also made for composite tanks, for example N 240, low pressure, for propane - butane, with the ability to adjust 20-40 mbar, outlet: 3/8 inch, internal right-hand thread. There is a pre-installed gasket designed for 10 years of service.
Gearboxes may vary in design, but the principle of operation 
single It is based on the feedback between the pressure in the gas vessel and the pressure at the outlet of the reducer, carried out using membranes, valves and springs. These products are single-chamber, double-chamber, direct action, reverse action. In practice, reverse action devices are most applicable as the most convenient and safe.
Reducer for household gas cylinder performs a function comparable to the function of a stabilizer in the operation of an electrical system, this device is, but for gas equipment. Its main goal is to reduce the pressure of the gas coming from the gas pipe or from the gas cylinder to the required value of the equipment to which the blue fuel is supplied.
The next most important function of the reducer is to keep the working pressure at the proper level automatically. Gearboxes for gas cylinders differ from each other in shape, size, throughput by weight, etc. But according to the principle of operation, these devices can only be divided into two types: direct and reverse gears.
The principle of operation of a gas reducer for a cylinder
Direct reducers are designed in such a way that the gas, passing through the fitting, opens the valve and presses it against the seat with the help of a spring, and the high pressure gas stops entering the chamber. Further, the membrane squeezes the valve out of the seat, the pressure gradually decreases, reaching the level of the working pressure of the one to which the reducer is connected.
As a result, the spring straightens, the valve moves away from the seat and ceases to prevent the flow of new volumes of gas fuel. If the pressure again begins to increase, then this spring is again pressed down by the valve and gas does not enter the device.
In reverse-acting reducers, when gas enters, the valve is compressed and prevents it from penetrating into the device. With the help of a special adjusting screw, the pressure spring begins to compress, the membrane bends, the transfer disk presses the return spring, the valve rises, and the gas again moves into the chamber of the device.
Gas reducer "frog" for a cylinder
Features of the use of gas reducers in everyday life
We know that gases are divided into combustible and non-combustible. At the same time, I would like to recall that the gearboxes for different kind gases do not outwardly differ from each other, and in order to distinguish them, it was customary in the manufacture of devices to make a thread for gases with combustible properties - “left”, and for non-combustible gases - “right”.
Reducers operating on various types of gas are used in a wide variety of industries, Agriculture, in construction, in medicine. For example, oxygen reducers are used in the process of gas welding, cutting, in the work of medical institutions, and acetylene reducers are used in body work at car service and repair stations.
Propane reducers are used in construction, especially in roofing works, but the main purpose of such gearboxes is the supply and regulation of gas from gas cylinders to.
Relatively recently, already outdated gas tanks have been replaced by new, so-called composite cylinders, which differ from their predecessors in their lower weight and higher level of safety. New technologies have gone so far ahead that even if, God forbid, of course, something happens to such a cylinder, then during its explosion you will not even find fragments.
Composite gas cylinders
These gearboxes include the A300i-A310i gearbox, which differs from the usual gearboxes in the following indicators:
- the presence of an easily twisted nut;
- Increased up to 10 years gasket service life;
- a type of construction that provides more reliable tightness of the joints.
Household reducers for gas cylinders most often have quite affordable price, and given the role these devices play in ensuring the safety of not only our home, but sometimes our lives, their cost can be called absolutely acceptable.
When choosing a reducer, it is necessary to take into account all the details: what gas the device will be intended for, what type of gas cylinder will be used, what diameter is needed, etc. For example, it is recommended to purchase a reducer from the same manufacturer as the device itself, to which gas is supplied.
Types of gas reducers for a gas cylinder and price
Consider some types of regulators for gas cylinders, which are in good demand in the gas equipment market.
Household gas reducers RDSG for propane
Differs in the following characteristics:
- inlet pressure - 0.07-1.5 MPa;
- outlet pressure - 2950-3300 MPa;
- weight 310 g;
– the ability to withstand temperatures from -30 to +45 degrees Celsius;
— capacity of 1.2 m3 of gas per hour.
The price of such a gearbox is from 150 to 200 rubles.
The M714 gearbox is made in Italy and costs only 50 rubles more, having:
- inlet pressure 20 bar;
- outlet pressure 30 m bar;
— has an elastic gasket with a long service life.
Reducer N240:
- inlet pressure - 18 bar;
- the ability to adjust the pressure from 20 to 60 bar;
- the ability to operate the device at temperatures from -20 to +50 degrees.
The cost of the gearbox is about 1000 rubles.
Reducer BPO-5 (miniature).
- inlet pressure 2.5 Pa;
- outlet pressure-0.3 Pa;
- weight is only 650 g.
Reducer BKO-25:
- inlet pressure -20 MPa;
- working pressure-0.8;
- weight 2 kg;
— capacity of 25 m3 of gas per hour.
Gas propane reducers BKO-50 and BPO-5
- inlet pressure 20;
- working pressure 1.25;
- weight 2.1 kg;
— capacity of 50 m3 of gas per hour.
Reducer BVO-80:
- inlet pressure 20 MPa;
- working pressure 1.25;
- weight 2.1 kg;
— capacity of 80 m3 of gas per hour.
Reducer RKZ-250:
- inlet pressure - 20 MPa;
- working pressure - 1.6;
- weight 13 kg;
— capacity of 250 m3 of gas per hour.
Reducer RKZ-500:
— inlet pressure 20 MPa;
- working pressure 1.6;
- weight 13 kg;
— capacity of 500 m3 of gas per hour.
Keep in mind that every kind household reducer for a gas cylinder designed not only for a specific purpose, but also for a specific gas. If the word “propane” appears in the documents for the device, then this reducer cannot work on methane. Compliance with these simple rules will ensure not only an uninterrupted supply of gas from a cylinder to a gas appliance, but also save your health, and maybe even life.
The gas reducer is designed to stabilize the operation of the gas supply system. Its main task is provide gas supply, the pressure value of which is optimal for the normal operation of the gas pipeline network equipment. The responsibility of the reducer is to automatically maintain the value of the working pressure in the proper state.
Before using a pressure reducer, you should familiarize yourself with its varieties and the main parameters by which these devices are classified.
According to the principle of operation, gas appliances are of direct and reverse type.
In direct-type gearboxes, the gas passing through the fitting acts on the valve with the help of a spring, pressing it to the seat, thereby blocking the entry of high-pressure gas into the chamber. After the valve is squeezed out from the seat by the membrane, the pressure gradually decreases to the operating level of the gas appliance.
The principle of operation of the device the reverse type is designed to compress the valve and block further gas supply. With the help of a special adjustable screw, the pressure spring is compressed, while the membrane is bent, and the transfer disc acts on the return spring. The service valve is lifted and the flow of gas to the equipment is resumed.
When the pressure of the system (cylinder, reducer, working equipment) increases in the reducer, the membrane is straightened with the help of a spring. The transfer disc, going down, acts on the return spring and moves the valve to the seat.
It should be noted that domestic reverse-acting gas cylinder reducers are safer.
By positioning and installation features, the devices are divided into ramp, network and balloon.
Ramp gas regulators are needed to reduce and stabilize the pressure level of gas supplied by a single source. Devices tend to lower the working pressure of the gas supplied from the central line or a number of sources. Used for large volumes welding work. Network stabilizers keep the value low pressure of the gas supplied from the manifold distribution.
The specifics of operation, as well as the method of connecting the pressure regulator to the source, depend entirely on the properties of the working gas. According to the material used, the devices are as follows:
acetylene (A);
propanobutane (P);
oxygen (K);
methane (M).
Devices working with acetylene are fixed with a clamp and a stop screw, while for others they use a union nut with a thread identical to the thread of the fitting at the valve.
Propane reducers are painted red, acetylene reducers are white, oxygen reducers are blue, and carbon dioxide reducers are black. The body color corresponds to the type of working gas medium.
Pressure stabilization devices are available for both flammable and non-flammable media. The difference between them lies in the direction of the thread on the cylinder: in the first it is left-handed, in the second it is right-handed.
Gas pressure stabilization devices are characterized by maximum throughput and maximum pressure at the exit.
Regulator bandwidth displays maximum amount cubic meters of blue fuel processed within an hour. Industrial devices are capable of passing up to several hundred cubic meters per hour, household devices are content with several cubic meters.
The maximum outlet gas pressure is usually 1.6 atmospheres.
A special group includes a household gas reducer. It is designed to reduce the pressure of propane, which enters the furnace or gas boiler from the cylinder. The gearboxes used for the stable operation of the cylinder have various forms, dimensions, throughput, weight.
For storage and transportation gas in a compressed and liquefied state, special gas cylinders have been developed - containers in which substances are contained under high pressure. Balloons are of two types:
Composite cylinders, which successfully replace large and unsafe samples, are compact, weigh less and are more explosion-proof, do not corrode inside. The operating conditions of the new type of cylinders require the use of regulators that meet the requirements of European standards.
One of these modifications is the reducer for the A300i-A310i composite gas cylinder, which has its own characteristics:
Reducers that stabilize the operation of various types of gas are used in many industries, agriculture, construction and medicine.
For example, in the process of gas cutting with welding equipment, reducers are used to regulate the supply of oxygen, and acetylene ones are used when working with a car body at a service station or when repairing and installing a pipeline, utilities. In the commercial industry, carbon dioxide reducers are used to carbonate beverages on tap.
The main purpose of propane pressure stabilizers is the inlet and regulation of gas from cylinders to gas stoves, although they have been successfully applied and at construction work with a roof. A propane cylinder reducer is necessary when heating a private house.
When choosing a gas reducer for a cylinder with an outlet pressure regulator, it is necessary to take into account all the details: the gas that will serve the device, the type of gas cylinder used, what length and diameter the gas hose will have, what type of adapter to the cylinder is used.
If you choose the wrong device, you may side effects, the regulator may whistle or hum. Therefore, it is recommended to operate gas equipment and a regulator equipped with the same manufacturer.
It is important to know why a gas cylinder is equipped with a pressure regulator and why this information is important. Each household regulator for a gas cylinder has its own specific purpose and is designed to work with a certain type of gas. Proper use of gas equipment is a guarantee of uninterrupted supply and safe operation of blue fuel.
