In urban and industrial water supply systems, pressure can significantly exceed the maximum value allowed for equipment connected to pipes, which often leads to damage to it. When quite powerful pumps are started, a water hammer occurs in the water pipes, which destroys water metering devices, main filters or leads to leaks and ruptures of pipes.
The water pressure regulator (reducer) in the water supply system, in real time, ensures constant maintenance of the specified water pressure in the water supply line located after it.
The reducer reduces the water pressure in the system to the level required for appliances accounting (meters) for operation, effectively prevents sudden pressure drops in the system (water hammer) and prevents the possible occurrence of cavitation, the occurrence and subsequent collapse of bubbles in the liquid, leading to damage to the elements of the water supply system. In domestic water supply, the regulator helps to reduce water consumption and reduce the rather unpleasant sound (whistling) in the water pipes.
- According to the mode of operation different temperatures- there are reducers for water supply networks of cold and hot water supply - cold water from 0 to 40 0 С, hot - more than 40 0 С.
- By type of working body - valve or piston regulator.
- According to the method of various fastening to pipes - flanged or threaded connections.
- According to the method of control - electronic or mechanical.
- According to the actuator used - spring or membrane gearbox.
- According to the material of manufacture of the outer case - for the manufacture of the case of regulators, manufacturers actively use cast iron, brass or steel.
- According to the principle of pressure regulation in the water supply system:
- the static method is used for uneven water consumption (in houses and apartments);
- astatic mode of action when continuous regulation of the water flow is carried out (used in industrial systems water supply and main pipelines).
Features of mounting the gearbox in the water supply system
The pressure regulator can be installed:
- In the apartment, inlet pipe water supply.
- On the introductory highway of the microdistrict.
- When entering the water supply into a separate building.
Before the regulator, a filter should be installed in the line coarse cleaning water. It will successfully prevent the failure of the gearbox due to damage by mechanical particles (sand, rust, etc.). The reducer must be installed in the absence of water flow (all consumer valves are closed). The water pipeline downstream of the regulator must consist of a straight pipe section, at least three working pipe diameters in length.
In district or house water supply systems, pressure gauges are installed before and after the regulator to control pressure. According to their pressure readings, one can easily judge the health of the gearbox, as well as fine-tune it. Devices with built-in pressure control devices are installed with the pressure gauge upwards, if possible on a horizontal pipe section.
For a successful Maintenance and replacement of the device, a shut-off valve is installed in front of it. At the time of maintenance of the regulator for uninterrupted water supply, if such, of course, is required, a bypass is made (a bypass pipe connecting the water supply in front of the gearbox and directly behind it) which will allow you not to turn off the water supply.
Selecting a pressure regulator
When choosing a regulator, it is mainly worth paying attention to the pressure regulation range, temperature range and its capacity. More complete information about technical specifications devices can be found in the passport.
Before purchasing, do not forget to read the device passport. There must be indicated full information about technical specifications.
If the inlet flow rate specified in the device passport does not match the actual water flow rate from the water main, cavitation zones may form in the regulator body. Gradually, this effect may damage the device and possible emergence pretty annoying noise.
The water pressure reducer in the water supply system is usually equipped with one or more counteracting springs designed to set the required pressure after the device. A device with a single spring is adjustable in one relatively narrow range, the possible presence of several springs makes it easy to change wide tuning ranges.
Regulator types
- Piston - the most common type of device, usually having the lowest cost among the models on the consumer market. The principle of its operation is based on changing the section of the pipeline, by partially overlapping it with a spring-loaded piston. The control range in devices of this type is usually from 1 to 5 atm. The main disadvantages of this device are the presence of moving parts that wear out over time, as a result of which the device gradually fails. Piston regulators are very sensitive to the presence of mechanical impurities in the water, so a coarse filter must be installed in front of this type of regulator. In addition, these gearboxes have a limit on top speed water flow.
- Membrane type - the main working body of such a device is a spring-loaded membrane located in a sealed chamber and mechanically connected to a control valve that controls the flow of water. outlet pressure adjustment range. The permissible water flow rate of the membrane device is much higher.
- Electronic regulators- water is supplied to the apartment by a low-power electric pump directly controlled by an electronic regulator. The electronic unit constantly monitors the pressure in the system by polling the pressure and fluid movement sensors, after which it determines the need to turn on the pump. The system provides protection of the pump from turning on, in the absence of water in the inlet line. The electronic regulator consists of a body, an electronic board cover, sensors and branch pipes for connecting to the pipeline.
- Flow reducers - the body of the device is a labyrinth with numerous branches, passing through which the flow of water rapidly loses its speed. Due to the absence of moving parts, such devices are the most durable and cheapest, as a big minus of such regulators, one can note the impossibility of adjusting them. However, for optimal operation, an additional valve is required in front of the flow reducer.
Setting the reducer pressure
Upon purchase, the manufacturer independently performs preliminary adjustment of the regulator, setting a pressure equal to 3 bar. If the factory setting does not satisfy the pressure parameters in the water supply, the user must independently adjust the device.
The adjustment of a mechanical device with a built-in pressure gauge is simple, by smoothly turning the adjusting bolt, according to the pressure gauge, the required water pressure is set; it should not exceed the lowest maximum allowable pressure of the consumer device.
If there is no built-in pressure gauge, it should be installed at least one pressure gauge after the regulator; ideally, there should be two pressure gauges, before and after the regulator. The maximum pressure of the manometer must not be less than the maximum pressure in the water supply. Without pressure control, adjustment cannot be made.
When choosing a pressure gauge, there must be a pressure margin of at least 20%, that is, if your maximum pressure, which can be equal to 5 bar, then the pressure gauge should be 6 bar.
Reducing or increasing the working pressure of the regulator is carried out by turning the adjusting screw, clockwise or counterclockwise. The screw is mechanically connected to the measuring element of the device (valve or piston) and is located on the regulator body.
Many modern gearbox models are equipped with an adjusting knob, by turning which you can quickly change the position of the adjusting screw. In the absence of such a handle, you must use a hexagon or wrench. Some gearboxes have built-in fittings for temporary installation of pressure gauges during commissioning.
Sequence of steps for setting the operating pressure of the reducer
- Look in the passport of metering and water consumption devices for their working and maximum allowable pressure.
- Open the inlet (main) valve.
- Shut off the valves (faucets) of all water consumers.
- Set the desired pressure value on the regulator.
- Open the load valve and make sure that the pressure in the system matches the passport data for water consumption devices.
- When you open the water and see what pressure you have in the system when parsing water, this will be yours - operating pressure. After that, it remains to adjust the regulator to the optimum pressure, and once again check the pressure with the valves closed, otherwise a situation may arise that the pressure is not enough when the devices are operating and the valves are open.
Conclusion
Although the pipeline pressure regulator is not a mandatory device, however, many devices are unable to work with high pressure in the water supply network. If your crane, by and large, anyway, it is designed for large range pressure, then other devices such as a boiler, boiler, filters, etc. may not be the same.
The use of this device protects the pipeline from hydraulic shocks, in the event of a possible emergency (pump restart). Therefore, the installation of a pressure regulator is recommended for every owner of a residential or production premises with the need for water supply.
Today, the most different types equipment: from conventional faucets and plumbing fixtures to complex and expensive household appliances. As a rule, the performance of all this equipment depends on the stability of the water pressure in the pipeline. However, for our engineering systems, pressure drops are business as usual, which forces us to look for additional solutions to protect sanitary equipment and household appliances. For this purpose, special devices are used - pressure regulators, which our company sells in Moscow at competitive prices.
Application of pressure regulators
A household pressure regulator, or reducer, is a device that allows you to maintain a constant water pressure in the pipeline. These devices are widely used not only in everyday life, but also in commercial field as well as small production facilities.
The main purposes of using gearboxes:
- Protection engineering networks from water hammer.
- Protection of plumbing fixtures and household appliances from failure due to pressure drops.
- Reducing water consumption.
- Maintaining a stable outlet water pressure.
- Reducing the noise of water flow.
Types of pressure regulators
The main operating element of the gearbox is a control device in the form of a valve. With an increase in water pressure, it reduces its flow area, which leads to a decrease in water pressure at the outlet. When the inlet pressure drops, the valve opens, causing the outlet pressure to increase.
Today, several types of pressure regulators can be used, the choice of which depends on various parameters. Including, depending on the method of maintaining pressure, water regulators are used for statics and dynamics. Statics regulators are used for installation in water supply systems in multi-apartment and private houses, which are characterized by uneven water intake. Dynamic regulators are used in cases where the flow of water in the pipeline is continuous. In the domestic sector, such devices can be used, for example, to protect heating equipment.
Depending on the type of connection to the pipeline, reducers are distinguished with a threaded (coupling) or flange connection. The most common in everyday life are coupling pressure regulators.
According to the type of control device, diaphragm and piston gearboxes are distinguished. Diaphragm regulators are characterized by high reliability, resistance to corrosion and contamination. However, they weak point is a membrane, the condition of which must be regularly monitored. Piston pressure regulators are not subject to wear and can have virtually unlimited time services. Their disadvantage is the rather high requirements for care. Also, if abrasive contaminants such as sand particles are present in the water, the gearbox may fail.
Quality pressure regulators at competitive prices
The Santekhkomplekt company offers high-quality household pressure regulators in Moscow. We sell all types of devices that are optimally suited for various options configuration. All regulators in our catalog are products of leading manufacturers, devices that are characterized by high level accuracy, reliability and durability in operation. With their help, it is possible to provide an effective and reliable protection plumbing fixtures, equipment and household appliances from water pressure drops in the system.
In our company, the sale of pressure regulators is carried out at favorable prices for buyers.
The selection and installation of sanitary ware are approached very carefully. During the installation process, it is worth observing all the requirements that the manufacturers of equipment impose. This will provide them reliable performance throughout the entire period of operation. But, unfortunately, sometimes there are factors that can disrupt the operation and integrity of plumbing equipment. common cause are water surges. To reduce the risk of its occurrence, experts recommend installing a water pressure regulator in the water supply system in the apartment.
The design and principle of operation of the device
Depending on the design of the device, it is of two types:
- Reducer with water pressure adjustment in the pipeline section to the plumbing fixture. Among themselves, plumbers call it the regulator "to themselves."
- A device for stabilizing pressure in pipes that are connected to a plumbing outlet. In a simple way, it is called the regulator "from oneself".
It is the water pressure regulator in the apartment that allows you to lower or stabilize the water pressure of engineering communications in a multi-storey building.
The device of the first type allows you to automatically maintain pressure in the pipeline. This is achieved by changing the size of the valve. It is open until the pressure in the pipe reaches the set level. Such a device is called a proportional reducer. This is due to the fact that the throughput of the device is directly proportional to the deviations set parameters. Often devices are installed in heating systems and pumping stations.
In household communication systems, it is customary to use gearboxes of the second type. The principle of its operation is somewhat similar to the previous model. It regulates the pressure by changing the section of the working valve. If the water pressure has increased significantly, then the bypass valve is partially or completely closed, which allows the pressure to stabilize and prevent the occurrence of complications associated with this. If the pressure, on the contrary, falls, then the valve opens.
The principle of operation and the scheme of the water regulator The water pressure reducer in the water supply system of an apartment of the “push” type has quite simple design which explains its high operational reliability. During operation, no drives are involved. The valve is driven by the energy of the fluid flow. So, from the side of the highway, the pressure of water acts on the piston, which tends to block it. On the other side there is a spring, which ensures that the shutter is set in the equilibrium position.
When the pressure rises, the working fluid begins to act on the membrane. As a result of this, the spring is gradually compressed, which leads to a reduction in the distance between the valve and the seat. Subsequently, the cross section of the through hole decreases, in principle, as well as the pressure in the line. When the pressure in the intake pipe decreases, this will open the valve and increase the fluid pressure.
The water pressure regulator with adjustment is reliable and unpretentious in operation. Thanks to simple settings, it is possible to ensure that the set parameters are maintained, without using power sources and carrying out any maintenance.
What tasks does the device solve
The apartment water pressure regulator solves a number of complex problems. So, it allows:
- Protect the pipeline and plumbing equipment connected to it from a sharp increase in water pressure in the main. During the operation of engineering communications, the water pressure in it may exceed normal value and even reach the maximum allowable level. Most often, residents of multi-storey buildings suffer from this problem. In such buildings, in order to raise water to upper floors, it is necessary to significantly increase the pressure of the liquid. As a result, the integrity of the line and some expensive plumbing fixtures may be compromised.
- Protect plumbing and pipelines from water hammer, which can also cause significant damage to utilities.
- Reduce the inlet head to the set value. If the inlet pressure is slightly higher than the required value, then plumbing fixtures may not function properly, or even fail. For example, instantaneous water heater has a built-in protection that blocks the operation of the device in case of wrong value input pressure. Problems can also arise with storage boilers. As a result of incorrect operation safety valve hot water will be discarded in vain. This will lead to an overrun of both water and electricity.
- Reduce water consumption. The pressure affects how much liquid flows out of the faucet for certain time. If you lower this figure, you can save a lot on water. For country houses this issue is more relevant. After all, reducing fluid intake will reduce the amount of wastewater. Therefore, the services of vacuum cleaners will be needed less often.
- Reduce the risk of flooding as a result of mains failures. So, if a leak occurs, the water will flow at a low speed, which will reduce the consequences of such a problem.
- Reduce noise in water intakes. If the water flow has a high pressure, then this leads to noise in faucets and taps. Pressure stabilization allows you to reduce noise or completely eliminate it.
Installing a pressure regulator in the pipeline solves many problems. In particular, this concerns the elimination of the increase in fluid pressure, which can lead to destruction and incorrect operation plumbing fixtures, since the faucets in the apartment are designed for pressures up to 5 ATM.
If the pressure exceeds these values, then it is necessary to install a water pressure regulator in the apartment!
How to choose a pressure reducing valve
Honeywell Water Regulator
When choosing a Honeywell water regulator (Honeywell), you should pay attention to the following parameters:
The correct combination of all these factors will allow you to choose a device that will ensure the normal operation of engineering communications.
Honeywell water regulators are considered very reliable, but the cost, respectively, starts from 1,500 rubles for the D04FM model.
Modern gearboxes are piston and diaphragm. The piston is highly resistant to wear. But, despite this, gearboxes of this type are characterized by low reliability in operation. This is due to the nature of water purification and the possibility of corrosion on the elements of the product. So, if small particles of dirt and sand may be present in the liquid, which will lead to jamming of the device. The only way out This is a water pressure regulator with a filter.
Pressure regulator RD-15
The membrane water pressure regulator RD-15 has two working chambers, which are separated by a diaphragm. This makes the device unpretentious in maintenance and reliable in operation. One chamber is completely sealed to prevent water from entering it. This is where the main part is located. structural elements. This water pressure regulator circuit protects the device from corrosion and jamming. Correct use reducer and diaphragm integrity ensure a long service life. And the cost is in the range from 300 to 500 rubles and has different variants execution. It is the most frequently used and has a certificate of conformity.
Pressure regulator RD-15 | Parameter name | Meaning |
|---|---|
| Diameter conditional pass DN [mm] | 15 |
| Nominal pressure [MPa] (kgf / cm 2) | 1,0 (10) |
| Regulation range [%] | 40 |
| Upper setting limit [MPa] (kgf/cm2) | 0,4 (4) |
| Conditional capacity [m 3 ]/h | 1,6 |
| Regulator weight [kg] | 0,35 |
Far water regulator
When choosing a Far water regulator or another company, you should pay attention to its technical specifications. First of all, this concerns the value of inlet and outlet pressure. Solving this problem is quite simple. You need to find out the requirements that apply to the device in a particular pipeline, as well as study the instructions for the water pressure regulator. It is in it that manufacturers indicate the nominal values \u200b\u200bof the working pressure.
- Maximum inlet pressure: 16 bar.
- Adjustable pressure: 1 to 6 bar.
- Maximum temperature: 75°C.
- Set pressure: 3 bar.
Also important is working temperature. So, some models are able to work in temperature regime from 0 to 40 degrees. Such devices are used only in cold water supply systems. For a hot pipeline, models that operate in the range up to 130 degrees are suitable.
But the cost of a far water regulator already starts at 2,500 rubles.
Pressure regulator Valtec
Particularly popular are the Italian pressure reducing valves in the Valtec water supply, which are reliable and please with their price (from 800 rubles). Perhaps this is the middle price segment for water pressure regulators for multi-storey buildings.
Valtec pressure reducer VT.087
Material
Such devices must be made of durable material. If we are talking about alloys, then they should contain ligatures that prevent the occurrence of a corrosion process. Experts recommend paying attention to the best water pressure reducers from well-known manufacturers. Of course, such products will cost a lot, but a long service life is guaranteed. There are also GOSTs for valves that lower water pressure.
Regulatory requirements to apartment pressure regulators Installation work
Installing a water pressure regulator is a very difficult task. Therefore, it is best to entrust this work to professionals. Of course, if you wish, you can do the installation yourself. But here you will also have to solve the issue of how to adjust the water reducer. For this you will need.
AT high-rise buildings, very often it happens that the pressure, for example hot water much more than cold pressure.
Then it becomes problematic to adjust the desired temperature in the shower, which is not very comfortable.
The pressure can be high in a cold riser. For the comfort of increasing the service life of plumbing fixtures, it is better to lower the pressure.
For these purposes, there are pressure regulators that are installed outside your apartment:
If the house is old and there are no such devices there, or for other reasons the pressure in the apartment is too high, then any plumber can install such a device in your system.
Many will be able to install it on their own. To do this, you will need the pressure regulator itself, two and.
It is installed as a regular meter or even easier as a strainer. Be sure to look at the direction. There is an arrow on the regulator housing.
A regulator with female threads, for this reason you may need a nipple if another section of the pipe also has female threads.
The regulator itself takes up hardly more space than the strainer itself.
In order to reduce the pressure, it is necessary to unscrew this screw or tighten it to increase the pressure.
This regulator does not have a pressure gauge. There are exactly the same with a manometer.
Adjusted, closed the lid and use:
When reconstructing or installing a new water supply system, it is usually planned to place all water consumption devices and necessary structural elements. Most of these elements of the water supply system have fairly strict requirements for operating conditions, the violation of which leads to a decrease in service life. These requirements include the maximum allowable pressure in pipelines. With a sharp increase in pressure in the system or water hammer, water consumption devices may fail. To eliminate the occurrence of such problems, it is necessary to install a water pressure regulator (RDV) in the water supply system. This device will be discussed in today's review.
Read in the article:
What is a water pressure regulator in the water supply system of an apartment and a house
The main function that water pressure limiters perform is to stabilize the pressure in the system and maintain it at a given level, protecting the line and consumption devices from high loads and water hammer. RDV is a safety mechanism in a metal case with an inlet and outlet threaded connection. The device can be equipped with a pressure gauge and an adjusting screw to adjust the water pressure.
In private households, to maintain a constant pressure in the water supply system, two mandatory devices are required - and a hydraulic accumulator. These elements are connected to the pump through the line, and the water pressure switch in the water supply system is located between and the pump.
Devices are structurally divided into two types:
- correcting the force of the pressure of the liquid in the pipeline to the RFE (plumbers call such a regulator - “to themselves”);
- water pressure stabilizers that normalize the pressure in the line mounted behind the device ("after itself").
The regulator of the first type is able to automatically maintain the required water pressure in the main by changing the flow area of the valve, which is kept open until the set pressure in the water supply system is established. This type of gearbox is mainly installed on pumping units, in heating systems, etc.
To stabilize the pressure of water in domestic pipelines, a regulator of the “after itself” type is used. The device stabilizes the pressure in the water supply system in the same way as the WFD of the first type, but it works in a completely different way.
You can familiarize yourself with the principle of operation of the relay for stabilizing the pressure of water by watching the video:
The device for stabilization is characterized by several features:
- way to connect to the water supply. In the water supply systems of private houses and apartments, an RFE is installed with a threaded (coupling) connection method, which is optimal for pipes with a diameter of 1-2 ″. For larger diameters, reducers with a flange type of connection are used;
- adjustment range;
- the maximum level of water pressure at the outlet;
- maximum temperature range of cold water supply up to +40˚C, and hot water up to +70˚C.
Household regulator has a capacity of not more than 3 m 3 /h. For industrial water pipelines, devices with higher performance are required.
The device and principle of operation of the RFE
Before considering how a water pressure reducer works, you should know the scope this device. RDV are equipped with:
- technological and communal water supply lines;
- fire water pipelines and fire extinguishing systems;
- water intake stations;
- pumping stations of main pipelines;
- melioration and irrigation systems.
Despite the fact that the principles of operation of the differential pressure regulator may differ, depending on the type of device, almost all WFDs have the same design:
- the main working element (valve, piston);
- spring and membrane;
- mechanical or electronic control;
- the throughput of household devices is 0.5-3 m 3, commercial - 3-15 m 3, industrial -> 15 m 3;
- body made of cast iron, brass, steel with chrome or nickel plating.
The principle of operation of the water pressure reducer is similar to the operation of a valve valve: a piston with a rod in its seat create a predetermined clearance, due to which a fluid pressure is created necessary force. With a stationary piston at the outlet, the pressure changes in proportion to the flow force at the inlet, and in the WFD, the position of the valve depends on the ratio of the current pressure and the stiffness of the spring. The adjustment of the regulator is carried out thanks to the “pilot circuit”: with an increase in the pressure force working environment there is a redirection of the water flow to the membrane, which lowers the piston rod, thereby reducing the flow area.
In addition to the standard adjustment mechanism, some modern RFE models can be equipped with additional devices:
- manometer;
- coarse filter;
- air blast valve;
- ball valve.
Video: the principle of operation of the gearbox
Types of water pressure reducers installed in water supply systems
The modern market offers a wide variety of models of water pressure regulators for domestic and industrial use. Reducers that reduce water pressure are divided into two types - piston and membrane.
Mechanical valves for water
Mechanical or piston water pressure reducers are the most common type of regulator. Popularity is caused by the lowest cost among similar devices. The pressure in the water supply system is adjusted using a spring-loaded piston, which changes the flow area of the pipe. Water pressure regulators have a range of outlet water pressure settings - 1-5 atm.
The main disadvantage that a mechanical water pressure regulator has is the presence of moving parts that are subject to wear, which leads to equipment failure. In addition, a piston reducer for plumbing is highly sensitive to various mechanical impurities in water that are present in domestic and industrial mains.
Expert opinion
Ask a specialist“It is for this reason that piston gearboxes are equipped with a coarse filter. The pressure force at the inlet of the piston water pressure regulator is 25 bar.”
Diaphragm water pressure reducers
When deciding for yourself which pressure reducers are better to buy - piston or membrane, you must first figure out what the devices of the second type are. Regulators of this type perform their function by means of a membrane with a spring enclosed in a sealed chamber. With an increase in the pressure force in the water supply system, the spring is compressed and the valve acts, which reduces the water flow in the pipes, and when it decreases at the inlet, everything happens the other way around.
The membrane water pressure regulator is a fairly reliable device, unpretentious in operation with a large range of pressure adjustment in the water supply lines. Also, these devices are very expensive. However, membrane gearboxes have such disadvantages as: a large number of moving parts and the complexity of the replacement procedure.
There are also regulators of the flow type, the distinguishing feature of which is the absence of moving elements, which in turn has a positive effect on the reliability and durability of the gearboxes. The equalization of the pressure force occurs due to the loss of speed water flow due to the passage of the internal labyrinth of the device. In everyday life, such regulators are used in almost all types of irrigation systems. The disadvantage of such devices is the need to include an additional gearbox at the output.
Also, RDV are divided according to the type of control into electronic and automatic.
Automatic WFD in the water supply system
The modern market offers big choice automatic water pressure regulators installed in water supply systems. Adjustment of the water pressure in the pipeline is carried out by means of a special relay. An automatic gearbox is a fairly compact unit with a membrane and two springs, the compression and straightening force of which is regulated by means of nuts. The membrane reacts to the inlet water pressure, and at low pressure, the spring weakens, and at maximum pressure, the compression becomes stronger. The action exerted on the springs leads to the opening (closing) of the contacts of the automatic water pressure regulator for pumps, starting or stopping the pump.
The relay helps to stabilize the pressure in the water supply network and automate the control of the pump.
Electronic pressure regulators
A special device monitors the current pressure force of the working medium by collecting sensor data and water movement, and then activates (if necessary) the pump. Thanks to the electronic water pressure controller, protection is provided pumping equipment from switching on in the absence of liquid in the water main.
Electronic water pressure regulators for pumps consist of a main body, sensors, an electronic board, a bushing for connecting an electrical cable and threaded pipes for connecting to a water supply system. The device has a quiet operation. An electronic water pressure sensor in the water supply system also allows you to protect the equipment of the line from possible water hammer.
Expert opinion
Water supply and sewerage design engineer, LLC "ASP North-West"
Ask a specialist“Electronic devices are installed up to the first liquid intake mark. Before starting the gearbox, the pump tank must be filled with water.”
How to install a water pressure reducer
The requirements for water supply and sewerage indicate that the installation of water pressure regulators must be carried out at the inlet immediately after the shutoff valves to the metering devices. With this arrangement, the gearbox will protect all hydraulic equipment, including the water meter and filter units.
How to place water pressure regulators in the apartment
To stabilize the water pressure and eliminate interruptions in domestic water supply systems, it is necessary to install a special gearbox. The apartment pressure regulator will also eliminate possible damage to equipment due to water hammer. Most apartment owners have already felt the benefits of installing such control devices.
Since in apartments a water pressure reducer is installed to reduce the pressure in the line, it is worth mounting it to the riser behind the meter and. It is desirable that the water pipe is in a horizontal position, and the regulator itself is located between two shut-off valves. Reducers for water in apartments must be installed strictly vertical position(horizontal or inclined installation is not allowed).
The installation of the RFE is practically the same as the installation of a water meter or mesh filter. As a rule, the direction of the flow of the working medium is indicated by an arrow on the body of the device, and the pressure gauge or socket for its connection is always located on top of the gearbox.
Before installing the regulator, it is necessary first of all to turn off the water (it is advisable to warn the neighbors if it concerns the main riser pipe). If necessary, an inlet shut-off valve is installed, to which a mechanical filter will be attached. Be sure to install a ball valve on the RFE.
All joints must be carefully sealed. In order to avoid damage to the regulator, it is advisable to carry out sealing work using tow to reduce the likelihood of leakage.
You can install water reducers in the apartment yourself (if you have experience), but it is better to entrust the installation to professionals.
On a note! The use of WFD protects household hydraulic appliances and the plumbing system from water hammer, breakdowns and emergencies.
Proper installation of the WFD in a private household
RFE devices for a private house perform the same function as for apartment highways, with the only difference being that there is a pump in the water supply systems of cottages. Water pressure regulators are mounted with the pressure gauge up at the point where the home network is connected to the pipeline (preferably behind the water meter). In addition, it is necessary to provide an insert into the coarse filter system (if this has not been done before), which is installed at the entrance to the home highway. Shutoff valves are mounted in front of the water pressure regulators on the pumps and behind them.
After the device for stabilizing the pressure of the liquid, a straight section of the pipeline should be made with a length of at least five working diameters. If you have minimal skills in plumbing, you can install a water pressure regulator at the entrance to the house yourself, but to guarantee quality, it is better to entrust the installation of the device to an experienced specialist.
Deciding for yourself the question - to install the regulator before the counter or after, you should watch this video
Adjustment of water pressure reducers in water supply systems
The most optimal is the pressure force at the outlet at the level of 2-3.5 kg / cm 2. It is difficult to achieve this value, so you should figure out how to adjust the water pressure reducer.
At various types and models of gearboxes have different speeds. In the event of a leak, the head is reduced by 1.5-1.2 atm. depending on the current installation. After a few seconds, the pressure increases to a level below static. The ideal pressure at the outlet should be at least 1.5 kg / cm 2 less than the inlet, otherwise the movement of water in the pipeline will slow down greatly. This must be taken into account when adjusting the water pressure reducers in the apartment.
The poor performance of the gearbox can only be noticed if there are paired pressure gauges or a water intake arranged upstream of the pressure regulator. Maintenance of the WFD consists of washing the built-in filter and washing the mechanism. In the event that this does not work, then the matter is in a mechanical malfunction or wear of parts. You can visually determine the state of the regulator if you remove the stem.
Adjustment of water pressure regulators must be carried out with the system running and the presence of pressure in it. Under these conditions, a change in parameters is immediately noticeable on the pressure gauge after unscrewing or tightening the adjusting screw. Adjustment without a pressure gauge is not worth doing, since you can knock down the factory settings of the gearbox.
You can familiarize yourself with the adjustment of the WFD by watching the video:
Overview of water pressure regulators in water supply systems
Maintaining normal pressure in the water supply system is very important for the normal operation of hydraulic equipment. Foreign and domestic manufacturers of sanitary equipment offer a wide range of equipment for adjusting the pressure force of the working medium in water supply systems. Before you buy a water pressure regulator, you should first familiarize yourself with the most popular models and manufacturers.
Popular Models of Honeywell Water Pressure Reducers
Produced by the company Honeywell water pressure regulators are designed to protect water supply networks from a sudden increase in pressure in the system. At the outlet of the reducer, the pressure is always at the set value, which reduces the cost of cold and hot water, and the device itself operates quite silently. Honeywell products are popular in European, American and Asian markets and meet all international quality standards.
| Model/Picture | Description | Average cost, rub. |
|---|---|---|
Honeywell DDS 76 1/2" | The DDS 76 model is designed to monitor the filter cleaning process using the backwash drive (Z11S-A, Z11AS, Z74A-A). The relay compares the values before and after the filter, and if the pressure is greater than the set value, the backwash drive is automatically turned on. The body of the regulator is made of high quality plastic. | 25100 |
Honeywell D06F-1/2" B | The hot water regulator eliminates the creation of excess pressure in the domestic water supply system and maintains a stable pressure at the set value. The gearbox is adjusted by turning the adjusting knob, and the device itself has an installation scale. The model is equipped with a branch pipe for installing a pressure gauge and compressed air, nitrogen or water can be used as a working medium. The device, if necessary, is easily transformed into a combined backwash filter. | 3200 |
Honeywell D06F-1/2" A | This gearbox model standard version allows to reduce the pressure of nitrogen, water and other non-aggressive working media flowing in pipelines and is used in household and industrial areas. Installing the D06F-1/2A regulator will make it possible to protect the pipeline and equipment connected to it. This device allows you to maintain a given pressure at the outlet, regardless of the jumps in the inlet pressure of the working media. | 2950 |
Honeywell D06F-3/4" B | Regulator model D06F-3/4 is designed to work with domestic and industrial pipelines With hot water. The reducer allows to increase the durability of the equipment included in the water supply system by maintaining a constant pressure force set by the consumer. The reducer consists of a brass body, an insert, a cylinder, a scale adjusting spring, a tuning knob and a fine filter located at the bottom. | 4500 |
Honeywell D06F-3/4" A | Honeywell D06F-3/4A allows you to protect the water supply system from excessive pressure, which can lead to emergencies and failure of connected equipment. the regulator is supplied with a branch pipe for the manometer, an adjusting scale and the adjusting handle. The working medium is cold water, nitrogen or compressed air. | 4116 |
Honeywell D04FS-3/4" A | Honeywell D04FS-3/4" A reducers protect the equipment of the water supply system from excessive pressure, avoid damage due to water hammer and reduce water consumption. The reducer valve supports given force pressure of the working medium at the outlet, even with its jumps at the inlet, which minimizes noise. | 1880 |
| Honeywell D04FS-1/2" A | The D04FS-1/2" A model is the most affordable and simple in the Honeywell line. The simplicity of the regulator, however, does not prevent you from constantly maintaining the set outlet pressure value. The design of the reducer provides for the possibility of installing a pressure gauge, and the adjustment spring does not come into contact with water. | 2090 |
Honeywell D06F | The Honeywell D 06F regulator model provides uninterrupted and comprehensive protection of the water supply system from pressure surges. The device is suitable for both industrial and production installations. The pressure force of the working medium in the pipeline is adjusted with a special knob with a scale of values. | 4800 |
Honeywell D06F-1/2
Honeywell D04FS-1/2 A
Honeywell offers consumers only quality and high performance water pressure regulators at prices that are completely justified.
Model range of Valtec water pressure regulators
| Model/Picture | Description | Average cost, rub. |
|---|---|---|
Reducer with filter and pressure gauge Valtec VT.082 1/2" | Pressure regulator Valtek VT.082. 1/2" is designed to reduce the flow of cold and hot media at the inlets in domestic water supply networks. The pressure is adjusted according to the principle "after itself". Model VT.082. 1/2" is equipped with a pressure gauge for more accurate adjustment of the outlet pressure and control the flow of water. Adjusting the flow rate of water at the outlet is easily done with a screwdriver, and each element of the gearbox can be quickly replaced or repaired. It is recommended to install the regulator immediately after the inlet shut-off valves in front of the water meter. | 1043 |
Diaphragm reducer Valtec VT.085 1/2" | The membrane regulator allows you to maintain a predetermined level of pressure of liquids, gases and other non-aggressive agents in heating systems, water supply, technological pipelines and pneumatic lines. The stability of the given pressure in the system is maintained regardless of sharp jumps in the main line. The absence of rubbing elements in the design makes membrane regulators less dependent on the purity of the working environment, unlike piston gearboxes, and more reliable. Membrane Valtec VT.085 1/2" is made of reinforced EPDM. | 2198 |
Piston reducer VALTEC VT.087 1/2" | Piston regulator VALTEC VT.087 1/2" is designed to reduce the pressure force in pipelines in which compressed air, water, glycol-based heat carriers and gases with temperatures up to +80˚C are used as a working medium. At the outlet of the reducer, the pressure does not exceed set value, regardless of pressure differences Adjustment is carried out in the range of 1-4.5 bar The body of the device and all its parts are made of special high-quality brass, the springs are made of of stainless steel and EPDM seals. | 862 |
Domestic water pressure regulator RDV
| Model/Picture | Description | Average cost, rub. |
|---|---|---|
Coupling regulator RDV15-2A-M for cold and hot water | The model of the stabilizing gearbox RDV 15-2A-M is used in various systems water supply to adjust the fluid pressure to a neutral value. The 15-2A-M regulator consists of a brass body with a spring-loaded piston, an adjustment unit and two nozzles. RDV is used in water supply systems utilities and industry to reduce the pressure level to the required value. The stabilization reducer makes it possible to significantly increase the reliability of the operation of hydraulic devices installed after the pressure regulator against hydraulic shocks and extend their service life. | 1102 |
Coupling regulator RDV-2A-M for cold and hot water | The clutch reducer RDV-2A-M for adjusting the pressure force of the liquid is intended for use in water supply systems of public utilities and industrial facilities. Water is used as the working medium. maximum temperature up to +70˚C. The body of the stabilizing regulator is made of brass. | 974 |
Coupling regulator RDV-2-M for cold and hot water | The reducer for pressure stabilization RDV-2-M is designed for use in industrial and municipal water supply systems. By optimizing the flow force of the working medium, a uniform distribution of liquid is achieved between distant and near communications from the central highway, as well as between floors of high-rise buildings. It also increases the reliability of the system and extends the life of the equipment. Water savings when a pressure regulator is included in the line reaches up to 30%, in addition, the energy consumption of pumping units is reduced. | 700 |
Coupling regulator RDV-2A-F for cold and hot water | The household water pressure regulator RDV-2A-F is produced in a solid brass case in the form of a tee combined with a filter, which is made of stainless mesh. The device allows you to stabilize and equalize the pressure in water supply systems with cold and hot liquids. | 700 |
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