Cold water pressure. How to determine the pressure in the plumbing and increase it if it fell

The inhabitants of high-rise buildings have repeatedly come across the situation when a sully stream of water flows from an open watershed crane.

It happens from the lack of pressure in the pipeline.

What is the water pressure in the water supply apartment house It should be, regardless of the number of open cranes, the use of a blessing of civilization was comfortable for each of its inhabitants?

• 1 Water supply pressure rate
• 2 Exact numbers According to regulatory documents
• 3 What pressure is enough for full consumption?
  • 3.1 Some features of autonomous water pipes
• 4 How to increase water pressure in plumbing
• 5 Classification of pumps
• 6 water pressure pump in plumbing
• 7 How to reduce water pressure in plumbing
• 8 How to find out pressure
• 9 video on the topic

Water supply pressure rate

A hose water pipeline (so builders call our water supply network delivering water to the apartment) is designed on the basis of SNiP requirements 2.04.02-84.

It says: for different network points, their normative pressure level is appointed.

The pressure in the water pipeline of the upper floors depends on what level the pressure is maintained on the entrance to the house.

This parameter depends on the number of floors. If the building is single-storey, then on the introduction of water pressure on the network should be at least 10 m in. Art. or 1,0197 atm. This means that the pressure in the pipe is enough to raise water to a height of 10 meters. In multi-storey buildings for each subsequent floor, another 4 m centuries should be added. Art. For example, in a 5-storey building, water pressure at the entrance to the building should be equal to 10 + 4x4 \u003d 26 m in. Art. If the resulting digit is translated into the atmosphere, the result will be as follows:

(26:10) x 1,0197 \u003d 2.65 atm

However, the above digit is not a boundary, but calculated. According to the standards in force in Russia, the pressure on the entry in the house of 4 atm is considered normal for centralized water pipes. (approximately, 40 m centuries. Art.).

Insufficient pressure in the crane is a situation that has met many. If this happens often, you need to correct the situation. Water Pressure Enhancement Station - indispensable assistant For your comfort.

You can find the guide for the manufacture of the check valve with your own hands here.

Zhuleka is a simple and very useful device for cleaning the well. Here http://aquacomm.ru/cancliz/mnogokvartirnyie-doma/santehnika/oblatnyj-klapan-svoimi-rukami.html you will find the instructions for making your own hands, and also learn how to break the well with this tool.

Accurate figures for regulatory documents

In SNiP 2.04.02-84, the maximum allowable free pressure of the water in the apartment in the apartment is stipulated: it should not be above 6 atm.

That is, if you live in a 22-storey house, the pressure on entering it will be at least 9.4 atm, but at the entrance of the pipeline in the apartment, this parameter must be reduced to 6 atm.

Moreover, there are norms and for free water pressure for each type of plumbing devices:

• 0.2 atm - for a washbasin with a mixer, a toilet bowl with a tank washed;
• 0.3 atm - for baths and shower cabins with a mixer.

Maximum pressure hot water In the area of \u200b\u200bsanitary devices should not exceed 4.5 atm.

The above values \u200b\u200bare valid not only for the centralized water supply network, but also for autonomous water supply.

What pressure is enough for full consumption?

Most tenants apartment houses Use water is very predictable. They periodically take souls, wash the dishes daily, wash it out and several times a week include a washing machine. To ensure these manipulations, it is enough to have in a water supply system for pressure (pressure) in 2 atm. If the bathroom has a massage shower or jacuzzi - they will work only at a pressure of at least 4 atm.

Overish high pressure The network leads to rapid wear or irretrievable destruction of ceramic faucets and sanitary equipment.

Some features of autonomous water pipes

The source of autonomous water supply is a well or well.

In both cases, water in the pipeline is supplied by pumps. It is this unit that creates pressure in the pipes, necessary to deliver water to consumers - cranes, machines washing or dishwasher, etc.

However, not only its power and productivity affect the level of free pressure in the plumbing. A great role in this issue is played by the debit of well.

If the water in the source is not enough, the pump will not be able immediately after its inclusion ensure the necessary pressure on the network. In the case of an excessive amount of water in the well, there is a risk of a significant increase in pressure, which can lead to different kinds of accidents - leaks, breakdown cranes, etc.

In the first case, the homeowner has to take measures to increase water pressure in the water supply system, in the second - correctly choose the pump performance to play the role of a kind of limiter.

How to increase water pressure in plumbing

Reducing the pressure in the pipeline may occur for several reasons:

1. Gusts on the urban highway. Network engineering Most cities have a very honorable age, so water leakage on the way to the consumer is the phenomenon is often. This reason the owner of the apartment is not able to eliminate, so it remains to be relied on the city authorities.
2. "Overgrown" pipes of the domestic water supply. In old houses on the inner surface of the pipes is postponed great amount precipitation, as a result of which their throughput is significantly reduced. Eliminate this problem is easy: you just need to replace the risers and wiring inside the apartment.

What should be taken if watering system Unable to provide a normal level of free head? The output in this case is one - install pumping equipment in the apartment.

Pump that increases water pressure

The pumping station, which is used by the owners of private houses, is hardly suitable here:

• First, it is not allowed to establish such equipment on a centralized water supply system without special coordination. And the neighbors are unlikely to agree to this - they will definitely remain completely without water.
• Secondly, pumping stations Referring to large-sized equipment, and install them in the apartment very problematic. And if it is also added to this and the strapping, it becomes clear that such an aggregate for the average apartment will not fit.

But not everything is so gloomy - manufacturers pumping equipment Release the boom pumps calculated precisely on the "apartment" installation.

Classification of pumps

Pumps that increase water pressure in water supply, intended for use in the apartment, is a small apparatus installed at the entrance of the pipeline in the apartment. Almost all pumps can act in two modes:

• manual;
• automatic.

Automated pumps for increasing pressure are included independently when opening any of the existing cranes in the apartment. Provides this feature of the duct sensor. It works when the water moves in the water supply. Pumps equipped with similar sensors are protected from bravery during dry operation.

Automated Raising Pump

Raising pumps on the principle of operation of the cooling system are classified as follows:

• With a dry rotor: an impeller mounted on the rotor, which injected the air to the engine body. The efficiency of such models is high, but their work is accompanied by noise.
• With a wet rotor: Water passes through the pump, cooling the motor. The main advantage of such pumps is their silent job.

Some models are promoted centrifugal pumps Designed only for hot or cold water.

Pump for water pressure in water supply

Pumps of brand are most popular with the owners of apartments:

• Comfort: efficient and economical devices. The pumps of this brand belong to the discharge of universal - they can be installed on hot and cold water. Product housing is made of of stainless steel. There are seven modifications that differ from each other of the amount of the calculated pressure (from 8 to 10 m) and the bandwidth (nominal - from 8 to 12 l / min, the maximum - from 20 to 30 l / min);
• Wilo: European European Class Pumps, excellent qualityuniversal. The pumps are equipped with a flow sensor, the engine cooling system is "wet rotor". They are designed for the maximum pressure from 9 to 20 m and throughput from 2.4 to 35 l / min (depending on the model);

Good reviews received a Unipump pump. It has a small mounting length, which ensures the convenience of its installation.

How to reduce water pressure in plumbing

Too high pressure in the pipeline can lead to the destruction of the pipes and failure of household equipment.

Everyone knows the scary word "Hydroat", as a result of which cranes begin to drip, fistulas appear on the pipe, etc.

Protect an intra-ordinary water supply network from such troubles with small device - water pressure reducer.

Household appliances are configured to the input pressure of no more than 60 bar. At the outlet, the gearbox can maintain a pressure from 0.5 to 6 bar.

Water pressure regulator in water supply can be installed at the inlet of the water supply in the apartment or before household appliances - boiler, washing machine and other devices that are poorly carrying high pressure.

How to find out pressure

The plumbing is a complex communication network in the form of a system of pipes and cranes intended for water supply to consumers. To assess the quality of the operation of this system, a parameter called "water pressure" is used, the value of which has direct influence On the correct work of plumbing equipment and comfortable hygiene procedures. The consequence of the low water pressure in the plumbing network is an insufficient pressure characterized by a thin weaving of water flowing from the crane.

Low water pressure eliminates the use of a massage shower and a jacuzzi at home, makes it difficult or at all impossible to work the washing or dishwasher.

What water pressure is considered normal

Water pressure in the plumbing network is measured in the atmospheres or bars.

1 bar is 10.19 m water column or 1,0197 atmospheres. The pump supplying water for thirty-meter height develops at the output pressure 3 of the atmosphere or 3 bars. If 1 bar is needed for 10 m depth, then 2 bars (20 m of water column) will remain for the delivery of water to the water consumption points.

According to GOST regulations in a centralized urban water supply network, a pressure of 4 atmosphere is considered normal. In reality, it can fluctuate in the range of 2.5-7 atmospheres, and during periods of seasonal test plumbing, jumps can reach 10 atmospheres.

What pressure is enough for full consumption?

2 atmosphere pressure is enough for:

• taking a soul
• wash
• washing dishes
• other daily needs
• normal functioning of the washing machine

Water consumption table

The minimum pressure of 4 atm is required:

• to use a jacuzzi or massage soul
• watering a country site

In the country cottages, the pressure should provide simultaneous water consumption by several points, so that it may be at one time to take a shower, wash the dishes and water the flower bed in the yard. Therefore, in each point, the pressure must be at least 1.5 atm.

Important! Increased pressure in the water supply volume Over 6 bar leads to rapid wear and destruction of sensitive plumbing equipment and ceramic valves.

When buying plumbing connected to the urban water supply network, it is recommended to choose equipment that has a certain margin of strength, designed for possible sharp pressure jumps and hydrowood.

How to increase waterproof pressure

The problem of insufficient water pressure is most often faced:

• residents of urban apartments on the upper floors of multi-storey houses;
• owners when the water analysis is significantly increased.

Owners of urban apartments, before making a decision to acquire equipment for an increase in water pressure, it is necessary to find out the cause of the problem. Insufficient pressure may be associated with clogging of pipes with mechanical particles and lime sedimentsAs a result, the diameter of pipes has decreased over time. In this case will help only.

If the problem is not related to clogging pipes, stabilize water pressure is possible in the following ways:

1. Purchase and establish a circulation pump that increases pressure and contributing to the stretching of larger water from pipes;
2. with hydroaccumulator;
3. Equip autonomous system water supply.

Pump to increase water pressure

For selection the desired option Specify the problem:

• water is constantly, but the pressure is insufficient for comfortable consumption and work of household appliances;
• there is only water on the lower floors of the building, and on the upper - no.

In the first case, when the pressure, although weak, is constantly, the circulation pump will help to strengthen it. This is a small size and power, the device is crashed into an existing water supply system immediately before the water consumption points.

Classification of pumps that increase the pressure in the plumbing

Pumps are divided into those operating in one of the modes:

• manual - Continuous operation of equipment is ensured. For such a pump, you need to disable it on time to avoid its overheating and failure.
• automaticWhen the pump operation is adjusted by the flow sensor. When the water is turned on, the pump starts running. Such a mode is preferable to manual, since the pump is protected from work in the absence of water (in dry mode). It is more economical and serves longer.

The design of the pumping equipment is different according to the methods of cooling the housing:

1. dry rotor: In them, the housing is cooled by blades installed on the shaft. Features of these models: high efficiency, the presence of a small noise during operation;
2. wet rotor: cooled by pumped liquid. For such pumps, silent work is characteristic.

There are pumps:

• universal - can be used for hot and cold water supply;
• used only for hot or cold water.

Pumps increased pressure Different:

• compact sizes, they can be installed in small rooms;
• low cost.

Attention! Pressure pumps can increase water pressure no more. by 30%. Their installation of themselves will justify if the existing pressure on the network is at least 1.5 bar.

Pumping stations

If it is necessary to provide a constant high pressure and if water is often absent at all, it is recommended to upgrade the system by installing self-priming consisting of:

• centrifugal pump pressure increase water
• hydroaccumulator (tank) with a volume of 1-3 cubic meters
• managing the entire system.

For normal pressure The installation will not be turned on, the relay will turn it on when the pressure is reduced below the set standard. As a rule, the tank is filled at night when the pressure in the system is high. The greater the volume of the tank, the less the pump will turn on, the longer it will last. Such a system can maintain an optimal pressure level of 3-4 atm.

It's important to know! The pumping station requires more complex maintenance than the pump mounted in the plumbing.

• Station requires a large space for installation;
• The tank must be regularly cleaned, it is impossible to allow strokes in a tank of more than 2 days;
• Can be mounted on the roof, in the basement or in the ground.

Specificity of autonomous water pipes

When equipped with an autonomous water supply system, the following features should be taken into account:

• Provision or well;
• It is necessary to ensure sufficient water pressure in all, even the most remote, water consumption points.

The operation of the autonomous water supply network depends on the two parameters:

1. existing pressure
2. daily water consumption

Depending on the flow rate (performance) of the well or well, two situations are possible during operation:

• performance of non-pressure wells or wells with a weak pressure does not cover the daily need of water in the house. The source is periodically emptied, due to which the pressure drops;
• Significantly exceeds the daily water consumption. The pressure in this case may exceed 6 bar, which entails in compounds and rapid wear of plumbing.

Note! Choose pumping equipment, focusing on its performance. It should maximize the planned consumption of water and the flow rate. To calculate, take the daily consumption of water in summer periodwhen the maximum water consumption

Accurate calculations of the performance of pumping equipment and professional advice regarding the installation of pumping stations can be obtained from employees of firms engaged in such equipment. The network upgrade on the existing project is capable of performing plumbers to their Housing and Housing Host in the presence of a certain experience.

Plumbing is a communication system in the form of complex structures Pipes and cranes intended for water supply to consumers. To determine the efficiency of the system, the concept of "water pressure" is applied in the water supply. The correct operation of sanitary devices and a comfortable commission of hygiene measures directly depends on this indicator.

The investigation in the system is an insufficient pressure, which delivers many inconvenience to residents on the upper floors of apartment buildings. This phenomenon makes it difficult to work with dishwashers and washing machines, or at all the impossible use of a massage soul and a jacuzzi.

However, there are several ways to combat such a complicating life factor. If the cause of low pressure does not lift in the usual clogging of the pipes, the water pressure in the water supply can be adjusted thanks to the installation of devices that provide the most comfortable pressure for the pressure.

What is the norm in the water supply

To measure the fluid pressure in the pipeline use units that differ slightly in their values. Despite minor discrepancies, the indicators are equal to one to one.

1 bar is 0.0197 atmospheres and 10.19 m water columns.

Pumping equipment that provides water supply to a height of 30 m, develops pressure in 3 bars (3 atmosphere) at the output. If for water pumping submersible pump From the well or well, a depth of 10 m requires a 1 bar, then the remaining 2 bars provide a lifting of fluid to water intake points.

Pressure in the city and private pipeline

In order to optimize the water pressure in the urban water supply, do not take into account the delivery of fluid from the well. Water supply is carried out from a centralized network. However, the owners of country cottages with an autonomous water supply system need to take into account the level of the source, or rather the depth on which the pumping equipment in the shaft well will be installed. When water passes through the pipeline, it overcomes some resistance, which should also be considered when calculating the required pressure.

According to regulations and GOST, the pressure in urban systems should be 4 atmospheres. However, users of the plumbing network connected to centralized stations, accurate information about how water pressure in the water supply is not allowed. This value can fluctuate in the range of 2.5-7.5 atmospheres.

What should be considered when choosing plumbing

Increased water pressure in a water supply to more than 7-atmospheres destructively acts on sensitive plumbing devices, connecting elements in pipelines and ceramic valves. Residents of urban apartments are recommended to purchase equipment for water supply with a maximum safety margin. This will help to avoid repair workprovoked by sharp pressure surges in the future.

Everything installed mixers, Cranes, pumps must steadily withstand water pressure in a water supply system in 6-7 atmospheres. It should be noted that with an annual seasonal testing, the pressure can reach 10 atmospheres.

The optimal pressure value for the normal operation of household appliances

The minimum water pressure in the water supply system in 2 atmospheres is sufficient to perform the following tasks:

• taking a soul;
• wash;
• washing kitchen facilities;
• other hygienic needs;
• the normal functioning of the washing machine.

The pressure in 4 atmospheric allows to expand the range of tasks to which the adoption of a massage soul and a jacuzzi, watering the household plot with green plantings.

AT country houses The pressure should be sufficient for the simultaneous consumption of water with several water points. In order not to overshadow the life of family members, water supply should be equivalent in all sanitary nodes and make up at least 1.5 atmospheres.

Fireproof water supply

Water pressure in can be high and low. High pressure is designed to extinguish large production, commercial and public buildings. Build a plumbing with a pressure of 2.5 l / s on country plot It makes no sense. Holders of cottages should be borne in mind that the minimum water pressure in the fire water supply should be at least 1.5 l / s.

in plumbing

Measuring water pressure in the water supply system is carried out using a pressure gauge. Before installing the device, it is necessary to overlap the cold or hot water, depending on whether the water strength must be measured. The location in the system for mounting the instrument should be convenient and easily accessible. Next, you need a metal pipe with a length of 5 cm. With the help of the dice you need to do external thread On the pipe so that it exactly as much as possible to the manometer. In order to cut a hole in the pipe of the desired diameter and attach a prepared cut pipe to it, you can use the welding machine.

Manometer mounted on metal pipe with help wrench. To solve the problem of leaking in the joint locations, there are special sealing materials. After installing the device is complete, you can proceed to test pressure in the plumbing. To do this, it is necessary to restore the water supply and secure the indicators on the pressure gauge.

How to lower the water pressure in the water supply

For stabilization and reduction of water pressure, a special gearbox is used. It protects against the hydraulic man not only the water supply itself, but also the household appliances connected to it. A small device is located in a hermetically metallic case. The pressure regulator has two threaded pipes located at the inlet and output. In some cases, it can be placed the third pipe for the installation of the pressure gauge and the screw, designed to adjust the water pressure.

The gearbox works on the principle of alignment of the aperture and a tuning spring. If the crane in the plumbing opens, the output pressure in the device is reduced, as a result of which the pressure on the diaphragm is reduced. The spring effort increases. It opens a hole until the pressure in the output plumbing does not reach a certain value. Or its jumps are not reflected in the opening and closing of the valve.

Ways to increase water pressure in water supply

Most often with the problem of reduced water pressure in the system faces:

• owners of apartments in multi-storey houseslocated on the upper floors;
• holders of country sites in the summer, when water consumption increases significantly.

Before starting the installation of equipment that ensures the increase in water pressure in the water supply, residents of urban apartments should find out the cause of the problem. Low pressure It may be a consequence of pipeline clogging with small objects or lime deposits. As a result, the diameter of pipes is reduced, and water goes to a smaller volume. Solving such a problem only full replacement All pipes.

If the cause of low pressure lies in the other, to stabilize the water supply in the following ways:

• installation of the circulation pump that increases pressure by suction more water from pipes;
• installation of a pumping station with a hydroaccumulator;
• autonomous Water Supply Network.

Choice proper option Depends on several factors:

• water supply is carried out regularly, but the pressure is insufficient for normal life and household appliances - the circulation pump will help to increase the head;
• water does not reach the upper floors of the house - the pumping station is suitable.

Classification of circulating pumps

There are several modes of operation of pumps:

• Manual - the operation of the equipment is carried out in continuous mode. However, in order to avoid overheating or failure, the pump should be disconnected.
• Automatic - Equipped with a flow sensor. When the water is turned off, the pump is automatically activated, which makes it more economical and durable.

By functionality, pumps are divided into classes:

• universal - installation is possible for hot and cold water supply;
• only for cold or hot water.

The advantages of pumping equipment are low cost and compact sizes. However, it is worth remembering that pumps increase pressure by 30%. Their installation justifies themselves if the water pressure in the plumbing, the norms of which constitute no less than 1.5 atmospheres, equivalent in all water intake points.

Self-priming pumping stations

Water pressure in the water supply can be increased by installing the pumping station. As a rule, it consists of the following elements:

• centrifugal pump to increase water pressure;
• hydroaccumulator for 1-3 cubic meters;
• pressure relay - manages the entire system.

With normal water supply, the device will not be activated. If there is a water pressure in the water supply, the norms of which are very different from the installed, the pump will automatically turn on. Usually the hydroaccumulator is filled at night, with a higher pressure in the system. The greater the container for the accumulation of the fluid, the less the device will turn on and the longer its service life. This system Supports pressure level of 3-4 atmosphere.

Before installing the pumping station, it should be remembered that this equipment requires a large space for mounting. The tank is subject to regular cleaning (at least 1 time for 2 days). Mount the hydroaccumulator can be on the roof, in the basement or in the ground.

Features of non-centralized water pipes

The specificity of autonomous water pipes is to raise water from wells or mine wells, as well as providing good pressure in all water intake points of the house and remote points on panstone. The operation of the decentralized water supply network depends not only on the water pressure, but also from its flow.

The effectiveness of pumping equipment should maximally respond to the planned volume and flow rate of the shaft well. To calculate, it is better to take indicators of water consumption in the summer, when they reach the maximum value.

The minimum pressure in the water supply system is equal to one atmosphere. In this case, the water moves in pipes only under the action of gravity forces - "Self". Therefore, such a water supply should "eat" from the tank located at the level of the attic.

But such a scheme makes it difficult to install the water supply system and presents special requirements for strength and waterproofing attic overlap. In addition, the consumer may forget about the possibility of simultaneous "inclusion" of several cranes.

Summarize - when minimum pressure You can use only one crane and forget about the extensive water supply network.

Maximum water pressure in the water supply

The upper limit is limited to the performance of pumps and ring rigidity of reinforcement. Therefore, the maximum pressure in the water supply is theoretically reaching up to 15 atmospheres. After all, big indicators will not stand neither the pipe nor shut-off valves.

But in practice, the maximum indicator in the city water supply does not exceed 7-10 atmospheres. And it is characteristic only for internal networks of multi-storey buildings.

Well, inside the apartment or house, the pressure is limited at a mark 6-7 atmospheres, since a higher pressure can damage the thin mechanics of modern plumbing devices.

Thus, the maximum pressure ensures a strong pressure and guarantees uninterrupted water supply of multi-storey buildings. However, with this indicator, the risk of damage to the "filling" of all sanitary devices increases.

Optimal water pressure in plumbing

The main criterion according to which it is possible to determine the optimal pressure of water in the water supply - the norms of fluid consumption. And according to sanitary standards Each person accounts for at least 4.5 m3 of water per month. But we spend much more.

Therefore, taking into account the bandwidth of the standard half-wing pipes of the inner wiring, the optimal value approaches 2-2.5 atmosphere. At such a pressure, the consumer does not notice the heads of pressure while simultaneously using the crane and drain tank.

But the abundance of water consuming the instruments makes us overestimate this indicator to at least 4 atmospheres. Since at a lower pressure it is impossible to simultaneously use washing machine and a shower cabin or dishwasher and ordinary crane.

Total, the optimal pressure in the water supply system should be kept at the level of 3.5-4 atmospheres. However, any household pipeline should "hold" a hydraulic blow, provoked by a jump to 6-10 atmospheres (what pressure is the plumbing in a specific case, only system designers decide).

Ways to increase and reduce water pressure in plumbing

Special compensators are used to reduce pressure - safety valves or gearboxes whose springs are configured to a specific pressure. If the pressure in the water supply has exceeded this indicator, then the valve "blends" the excess volume of fluid into the sewer.

Typically, such devices are mounted only in industrial and utility waterways, and in household engineering networks, safety valves are infrequent. But if your home plumbing isted from the highway, the safety valve will be far from excess.

Well, the installation of this element is carried out as follows:

Of course, such a system requires some expenses, but ceramic valves of modern mixers, destroyed at a pressure of 7-8 atmospheres, are even more expensive.

Increasing water pressure in the water supply is implemented more in a difficult way. To do this, we will need a drive in which you can collect a supply of water, and a special pump, pumping this stock to the consumer.

That is, to increase pressure in the system you will have to do the following:

Having done these manipulations, you "tie" the pressure in the water supply to the characteristics of the pump to pump the liquid, having received a chance to reduce and increase the pressure in the system, changing the pump performance and tank capacity.

Adjustment of pressure in autonomous water supply systems of country houses

Water supply system country houseusually draws water from autonomous source - Well or well. Therefore, for the pressure in such a water supply system corresponds to the pumping station - a simple unit consisting of a hydroaccumulator, pump and control unit.

The principle of operation of such a station is as follows: the pump pumps water into the battery, which gives the liquid to the consumer, and the control unit turns on or off the pump engine, responding to a change in the pressure in the battery. Simply put: if there is no water in the battery, the pressure drops in the battery and the pump works, and if there is, the pressure in the drive rises and the pump is turned off. Accordingly, opening the valve of the crane in the house, we release the battery from the liquid, along the way, running the station pump.

Therefore, adjustment of pressure in autonomous water supply systems is carried out by calibrating the control unit, which is set to the minimum indicator - "starting" pressure, including the pump, and the maximum indicator is the pressure at which the pump will turn off. Having raised the starting pressure, we increase the maximum pressure in the plumbing. Accordingly, reducing the maximum indicator, we reduce peak pressure in the autonomous water supply system.

Technically, the process of adjustment looks like a weakening or tightening of two spring-loaded screws hidden in the control unit cover. Moreover detailed instructions The adjustment is attached to the set of documentation of each pumping station.

In addition, the adjustment of the pressure in the autonomous water supply can be performed using the hydroaccumulator setting. To do this, do the following:

Having done these actions, you can change the pressure in the plumbing without the complex adjustment of the control unit. Therefore, most of the owners of pumping stations resort to this method of calibration pressure in their autonomous water supply systems.

The inhabitants of high-rise buildings have repeatedly come across the situation when a sully stream of water flows from an open watershed crane.

It happens from the lack of pressure in the pipeline.

What water pressure in the water supply room of an apartment building should be, regardless of the number of open cranes, the use of the benefit of civilization was comfortable for each of its inhabitants?

A hose water pipeline (so builders call our water supply network delivering water to the apartment) is designed on the basis of SNiP requirements 2.04.02-84.

It says: for different network points, their normative pressure level is appointed.

The pressure in the water pipeline of the upper floors depends on what level the pressure is maintained on the entrance to the house.

This parameter depends on the number of floors. If the building is single-storey, then on the introduction of water pressure on the network should be at least 10 m in. Art. or 1,0197 atm. This means that the pressure in the pipe is enough to raise water to a height of 10 meters. In multi-storey buildings for each subsequent floor, another 4 m centuries should be added. Art. For example, in a 5-storey building, water pressure at the entrance to the building should be equal to 10 + 4x4 \u003d 26 m in. Art. If the resulting digit is translated into the atmosphere, the result will be as follows:

(26:10) x 1,0197 \u003d 2.65 atm

However, the above digit is not a boundary, but calculated. According to the standards in force in Russia, the pressure on the entry in the house of 4 atm is considered normal for centralized water pipes. (approximately, 40 m centuries. Art.).

Insufficient pressure in the crane is a situation that has met many. If this happens often, you need to correct the situation. - An indispensable assistant for your comfort.

You will find the return valve guide with your own hands.

Zhuleka is a simple and very useful device for cleaning the well. Here you will find the instructions for making your own hands, and also learn how to break the well with this tool.

Accurate figures for regulatory documents

In SNiP 2.04.02-84, the maximum allowable free pressure of the water in the apartment in the apartment is stipulated: it should not be above 6 atm.

That is, if you live in a 22-storey house, the pressure on entering it will be at least 9.4 atm, but at the entrance of the pipeline in the apartment, this parameter must be reduced to 6 atm.

Moreover, there are norms and for free water pressure for each type of plumbing devices:

• 0.2 atm - for a washbasin with a mixer, a toilet bowl with a tank washed;
• 0.3 atm - for baths and shower cabins with a mixer.

The maximum pressure of hot water in the sanitary appliance zone should not exceed 4.5 atm.

The above values \u200b\u200bare valid not only for the centralized water supply network, but also for autonomous water supply.

What pressure is enough for full consumption?

Most residents of apartment buildings use water very predictably. They periodically take souls, wash the dishes daily, wash it out and several times a week include a washing machine. To ensure these manipulations, it is enough to have in a water supply system for pressure (pressure) in 2 atm. If the bathroom has a massage shower or jacuzzi - they will work only at a pressure of at least 4 atm.

Necessary high pressure on the network leads to rapid wear or irretrievable destruction of ceramic faucets and sanitary equipment.

Some features of autonomous water pipes

The source of autonomous water supply is a well or well.

In both cases, water in the pipeline is supplied by pumps. It is this unit that creates pressure in the pipes, necessary to deliver water to consumers - cranes, machines washing or dishwasher, etc.

However, not only its power and productivity affect the level of free pressure in the plumbing. A great role in this issue is played by the debit of well.

If the water in the source is not enough, the pump will not be able immediately after its inclusion ensure the necessary pressure on the network. In the case of an excessive amount of water in the well, there is a risk of a significant increase in pressure, which can lead to different kinds of accidents - leaks, breakdown cranes, etc.

In the first case, the homeowner has to take measures to increase water pressure in the water supply system, in the second - correctly choose the pump performance to play the role of a kind of limiter.

How to increase water pressure in plumbing

Reducing the pressure in the pipeline may occur for several reasons:

1. Gusts on the urban highway. Engineering networks in most cities have a very honorable age, so water leakage on the way to the consumer is often the phenomenon. This reason the owner of the apartment is not able to eliminate, so it remains to be relied on the city authorities.
2. "Overgrown" pipes of the domestic water supply. In old houses on the inner surface of the pipes, a huge amount of precipitation is postponed, as a result of which their throughput is significantly reduced. Eliminate this problem is easy: you just need to replace the risers and wiring inside the apartment.

What should be taken if the water supply system is not able to provide a normal level of free pressure? The output in this case is one - install pumping equipment in the apartment.

Pump that increases water pressure

The pumping station, which is used by the owners of private houses, is hardly suitable here:

• First, it is not allowed to establish such equipment on a centralized water supply system without special coordination. And the neighbors are unlikely to agree to this - they will definitely remain completely without water.
• Secondly, pumping stations belong to large equipment, and establish them in the apartment very problematic. And if it is also added to this and the strapping, it becomes clear that such an aggregate for the average apartment will not fit.