Ecology of consumption. Estate: The lack of sufficient water pressure in the system is, of course, not a disaster, but there is little pleasant in such a situation. If you can wash the dishes or take a shower somehow, then household appliances such as washing or Dishwasher, may simply refuse to work. Fortunately, to solve this kind of problem, pumps have been invented to increase water pressure.
The lack of sufficient water pressure in the system is, of course, not a disaster, but there is little pleasant in such a situation. If you can't wash the dishes or take a shower, then household appliances, such as a washing machine or dishwasher, may simply refuse to work. Fortunately, to solve this kind of problem, pumps have been invented to increase water pressure.
How it works
problem low pressure in water supply systems are solved using two types of devices: circulation and self-priming pumps. The first ones are simpler and easier to install into the system. A conventional circulation pump consists of a rotor, an impeller attached to it and a motor that rotates it all. Usually, if there is water in the system, but its pressure is weak, one or two pumps are enough.
The problem of increasing pressure in the water supply system is solved in two ways: by installing a circulation or centrifugal self-priming pump
But if water does not flow to the upper floors at all, you will have to install a high-power pumping station with hydraulic tank. Such a device is simply installed as part of the plumbing system in a suitable location. The impeller rotates, giving the water flow additional acceleration.
As a result, the pipes fill with water faster, providing the required level of pressure in the water supply. These are compact devices low power designed to solve local problems. Suction pumps have higher performance and a more complex design.
In addition to a suction pump capable of pumping water to a considerable height, the system is also equipped with a hydraulic accumulator equipped with a special membrane. The operation of this equipment is automated; a pressure switch is used. Water is first supplied to the storage tank and then enters the water supply, providing the necessary characteristics within the system.
Thus, if a centrifugal pump eliminates a problem in a particular area, then suction equipment is used to regulate the entire water supply in a house or apartment. Self-priming booster pumps are capable of lifting liquid to a height of up to 12 m, while their power starts from 2 kW/h.
The pressure boosting pump works as follows. When the water flow reaches 1.5 cubic meters, the motion sensor petal changes position. It leads to automatic switching on pump When the water flow stops, the pump turns off. This type of equipment is used both in private cottages and in apartment buildings.
It is especially relevant in high-rise residential buildings, where to ensure normal water delivery to the upper floors without a special pump various reasons impossible. Installing one pump or even a special station with increased power can be a real salvation for residents of upper floors.
Sometimes you have to use not one booster pump, but two or more. Owners of houses in which the plumbing system was initially designed with errors sometimes face this need. In this case, you will have to calculate the cost of reworking the water supply (if such a possibility exists at all) and the cost of installing additional equipment.
A small pumping station installed in front of household appliances will ensure a normal water supply
It should be remembered that for pumping hot water intended special types technology. They are made of special heat-resistant materials, so they cost more than more simple models, designed for contact only with cold water. There are also universal booster pumps that are suitable for both cold and hot water.
Normal power circulation pump small, it consumes less energy than some incandescent lamps. When it is included in the system, you can achieve an increase in pressure by about 2-3 atmospheres. If a more serious correction of characteristics is required, preference should be given to more powerful equipment.
Circulation pumps have the property of working “at a dead end”, i.e. they do not need to be turned off even if all the taps are closed and no water is drawn from the system. Supply pumps function in approximately the same way to increase water pressure. These devices are similar in design to circulation models.
If such a pump is turned off, water will circulate freely through its body. As soon as power is supplied to the motor, the pump turns on. The impeller begins to rotate and the water pressure in the system increases. If there is a choice between automatic or manual systems, the former is usually preferred.
Comparing the diagram of a water supply system with and without a booster pump allows you to more accurately imagine the installation procedure for such equipment
This type of equipment is more convenient to use and lasts longer because it does not run idle. It makes sense to use a manual pump only in cases where it will be used either very briefly (temporary option) or extremely rarely (in the summer, at the dacha, only on weekends).
The diagram clearly shows the design of a wet rotor pump. Water flows around the moving parts of the pump and absorbs excess heat.
The concept of dry and wet rotor refers to information about the cooling system of the device. In the first case, it is cooled by a flow of air, and in the second, by a flow of pumped water. A pump with a wet rotor is cheaper, but lasts less due to the negative effects of sediment that accumulates on the working parts during pumping of water. Models with a dry rotor cope with their tasks more efficiently and have a longer service life.
Pump power and system needs
The power of the device must be commensurate with the needs of the system. Lack of pressure is bad, but also too much high pressure no need. If a pump that is too efficient is selected for the water supply system, the pressure in the system will increase and all its elements will be subjected to unnecessary additional load. This leads to rapid wear and frequent breakdowns.
The water pressure in the system must be no less than two atmospheres. This is enough for comfortable water procedures, as well as to start automatic washing machine. Although some models are more demanding in terms of operating conditions. For example, if the house has a shower, hydromassage, jacuzzi or other similar devices, the pressure should be higher.
In this case, it is better to increase the pressure in the water supply system to 5-6 atmospheres. Certain types of equipment require even higher performance. Therefore, the first step before installing a pressure booster pump should be to study the documentation of household appliances. If you plan to purchase any devices in the future, their characteristics also need to be taken into account.
To create a permanent high pressure The system uses special pumping stations, including a pump and a hydraulic tank. Their operation is controlled using a pressure switch
A specialist can make accurate calculations, but usually preliminary data made “by eye” is sufficient. To determine how much pressure actually exists in the system, you can use the usual liter jar. They open the water and measure how many liters of water pour out of the tap within a minute.
Then you need to deal with your current needs. If the inconvenience is due to the fact that when the tap in the kitchen is open it is difficult to take a shower due to low pressure, it is enough to use a regular pump, which will increase the pressure by a couple of atmospheres. But if the house has an automatic washing machine, shower cabin or other equipment of this kind, you should study the technical documentation.
Each such consumer requires a certain water pressure. Lack of sufficient pressure can lead to expensive equipment running idle. Under such working conditions Appliances, especially those produced abroad, are not calculated. A breakdown caused by a lack of normal pressure may be considered a case that does not comply with the warranty conditions.
You can focus on the maximum pressure indicators in the water supply system indicated in the device data sheets. In the presence of large quantity For such equipment, you should seek advice from an engineer. When choosing a water pump model suitable for power to increase pressure, you should also take into account the needs of equipment that you plan to purchase in the future.
How to install a self-priming pump
Installing a pump of this type is not particularly difficult. To do this, you will need approximately the same skills and tools that are needed to install other types of pumping equipment. Schematically, the installation of a booster pump can be represented in the following steps:
- Choosing a location for the accumulator and pump.
- Installation of a hydraulic accumulator.
- Installation of pipes for connecting equipment to the water supply.
- Hanging the pump from the wall.
- Pump and accumulator piping.
- Checking the operation of equipment in automatic mode.
In fact, a pump and accumulator with a pressure switch is a variation of a pumping station. To implement the installation of such a system of devices, you first need to find a place to place the tank. Some craftsmen replace the hydraulic accumulator with a membrane with an ordinary large capacity, for example, a 200-liter plastic tank.
Instead of a pressure switch, the tank is equipped with a float switch to ensure that it automatically fills as needed. Such a tank is installed as high as possible: in the attic or on the top floor. You should immediately think not only about the size, but also about the configuration of the container.
A flat and narrow tank will take less space than the traditional cylindrical model. Although there are no special requirements for the configuration of the container. When choosing a location for a container, you should provide access to the tank/hydraulic accumulator or the ability to easily dismantle this element. This is necessary to complete Maintenance, repair or replacement of the device.
The photo shows the installation of check valves during installation plastic tank, as well as the procedure for connecting the inlet and outlet pipes to the water pipe
Hydraulic accumulators are supplied ready for installation, but the tank should be prepared. There are holes in it for water inflow and intake. You can also make a separate shut-off valve to drain the water in an emergency. The pipes for supplying water to the tank and taking it into the water supply system are mounted to one water pipe.
IN modern conditions For the installation of water supply, it is more logical to use easy-to-install and reliable plastic pipes. To prevent air from being sucked into the tank from the pump, and also to prevent water from entering there when the equipment is turned off, check valves should be installed on both pipes. After this, pipes are installed to connect the tank to the water supply system.
Circulation pumps take up minimal space and do not interfere with the maintenance of household appliances
After the tank or accumulator has been installed and the necessary installations have been carried out water pipes, you can begin installing the suction pump. Typically, such a device is supplied disassembled. It is first assembled and then installation begins.
If you decide to mount the pump on the wall, you should first make markings for the fasteners. The pump is then suspended and connected to the water supply pipes. Overall, this is not a very complicated operation. Important point- direction of fluid in the pump. It is indicated on the body with special marks.
The pump should be installed in such a way that the water flows from the tank to the water collection points. Thus, the installation and connection diagram for the pressure booster pump is as follows: hydraulic accumulator-pump-consumer. Then the pump is connected.
All connections must be carefully sealed. If you use a booster pump to connect threaded connections, you should use a suitable sealant: FUM tape, linen thread, etc. The amount of sealant should be sufficient, but not excessive. TO plastic pipes the device is connected using special fittings.
After this, you should check the operation of the entire system. If a tank with a float sensor was used, fill it with water. They check not only the operation of the sensor. The container that serves as a storage tank should be checked for leaks. If everything is in order, you can proceed to testing the operation of the pump itself.
The pump must be connected to the electrical network. It is recommended to move the pump switch lever to the position corresponding to automatic mode. All that remains is to open the nearest one water tap and observe the operation of the device. If the installation is done correctly, the pump should automatically turn on and the water pressure will increase noticeably.
Pressure boosting circulation pumps are installed in a similar manner. They choose for them appropriate place in the water supply, and they cut it there. In this case, it is also extremely important to connect the pump correctly, taking into account the direction of fluid flow. If the position of the device is incorrect, the pump will still allow a flow of water.
Connection diagram of the circulation pump to the water supply system. Installation of such a device is very simple, but it is important not to confuse the direction of water flow
But its work will be extremely ineffective, since the device simply will not function. The instructions and the housing indicate in detail the correct position of the pump. After installation, the pump is connected to the electrical network and its operation is checked. If the water pressure at the nearest water intake point has increased, it means the installation was completed correctly.
A small pump to increase pressure is simply cut into the system. Usually, to do this, it is enough to remove a piece of pipe of the appropriate length at the beginning of the water supply
Installing a system with a hydraulic accumulator looks a little more complicated. First you need to understand the structure of the entire structure. The pump is connected to the hydraulic accumulator using special hoses. Then a pressure switch is connected, with which the equipment will be turned on and off.
This figure shows in detail the principle of operation of a pump with a hydraulic accumulator and the procedure for connecting it. The pump fills the tank and then turns off
The configuration of such a relay deserves special attention. Before starting work, it is recommended to carefully study the instructions and recommendations of the manufacturer. If the knowledge and skills for high-quality installation and configuration of equipment are not enough, it is better to contact a specialist for advice or completely entrust him with all the work.
To solve a problem with low water pressure in a system, a booster pump is not always necessary. To begin with, it doesn’t hurt to diagnose the condition of the water pipes. Cleaning them or complete replacement can restore normal pressure without additional equipment.
To understand that the problem is poor condition water pipes, sometimes it is enough to ask neighbors living in apartments on the same floor or higher. If their pressure is normal, the pipes almost certainly need to be cleaned. If the picture is the same for everyone, there may be more serious problems affecting the entire plumbing system of the house and even the area.
In high-rise buildings, water sometimes simply does not reach the upper floors. This requires high-power and sufficient expensive equipment. It makes sense to team up with other residents to share the costs. Good idea- demand a solution to the problem from the organization that receives payment for water supply, since it is the organization that must ensure the supply of water to the consumer.
Lack of water on upper floors- this is a violation of requirements fire safety. When communicating with a water supply service provider, it is worth paying attention to this point and mentioning the possibility of legal proceedings due to non-compliance with legal regulations.
Installation of equipment in apartment building It is best to have it done by a professional plumber. management company. He's with the system too better acquainted, and will be responsible in case of leaks or breakdowns caused by poor installation of equipment.
Video about booster pumps
Clearly the operation of a booster pump in an apartment multi-storey building presented in the following video:
A pump to increase water pressure is needed if available low pressure in water supply networks to make the liquid supply stable. The water pressure booster pump is produced by many manufacturers, so the consumer is often faced with the task of choosing such a unit according to certain criteria that correspond to the specific conditions of the water supply network.
What indicators should be used to select a pump?
A pump that increases pressure, like any other technical device, has certain characteristics. The main ones are the minimum inlet pressure and the maximum value that the booster pump provides for the water supply. Standard pressure that water should have in pipelines household networks, equal to 4 atmospheres. But in real conditions, this figure can reach 7 atmospheres, which has a very bad effect on any plumbing and pipelines.
If the water in the pipes has less than 2 atmospheres, then no device such as a washing machine or jacuzzi will work. The minimum value of this parameter for the operation of the entire water supply system is chosen within 2.3 atmospheres. Some pressure boosting pumps have values expressed in meters of water column in their data sheets. When purchasing a unit, you must take into account that one atmosphere is equal to 10 meters of water column. For fire safety systems, 3 atmospheres are taken as the standard. According to all of the above, pressure booster pumps must provide output operating pressure water from 2 to 4 atmospheres with fluctuations of this parameter at the inlet from 1.5 to 2 bar.
Types of units for flow stabilization
This pressure booster pump is flow apparatus, during operation of which additional force is created, sharply increasing the fluid pressure at the outlet.
- There are several types of pumps that increase fluid pressure in a pipeline:
- Household pumps for creating water flow in a private house or increasing water pressure in an apartment on a high floor. A garden pump capable of lifting water from deep well
- and used for watering plants in the garden or vegetable garden.
It is possible to install a pump to increase water pressure in the dacha if a central water supply is connected to this area.
- All types of pumps have two operating modes:
- Manual control, which allows for continuous operation. At the same time, the person himself ensures that the unit does not overheat, and, if necessary, turns it off.
- Automatic control is based on the use of a flow sensor, which turns on the pump only when the consumer's tap is opened. This mode is more economical and the equipment lasts much longer.
The units are cooled by a fan impeller or a flow of pumped liquid.
The installation of a unit pipe to increase water pressure in an apartment or private house is made at the entrance to the building or premises. If the device is used for watering, it operates in manual mode. Some manufacturers produce universal pumps that can function normally both in a network cold water, and in a pipeline with hot liquid.
Pumping stations
If a consumer sees that due to low pressure with clean pipes, water does not reach him, then he can use a unit called a “pumping station”, which sharply increases the water pressure in the water supply. Typically these are suction modules that are equipped with a hydraulic accumulator. Many owners of private houses use such stations without the latest device, but experts recommend installing even the smallest hydraulic accumulator, since without it one cannot hope to create stable pressure in the system.
The pumping station includes a centrifugal unit capable of increasing the flow of water so much that the module can pump it out of itself. deep well or increase the fluid flow rate so that it reaches last floor high-rise building with the required parameters.
To obtain high-pressure liquid when the flow is unstable, a hydraulic accumulator is installed in the station, increasing the pressure in the water supply. The consumer receives water from its tank when the pressure switch turns off the centrifugal pump when the supply of liquid from the central network stops.
What should a consumer consider when purchasing a pump?
When selecting, you need to focus on the following parameters:
- The pressure created by the unit and its throughput.
- Dimensions of the room or site on which the pumping equipment should be located.
- Reliability of the pump from the manufacturer whose device the buyer wants to purchase.
- Financial capabilities of the consumer himself.
Before you go to purchase the desired pump, you need to contact a specialist who will carry out the necessary calculations on the performance of the unit and the required pressure. Such things cannot be decided by eye. Most manufacturers pumping equipment provide such services almost free of charge.
If a person only needs to increase the pressure in the pipeline by 1.5-2 bar, then many companies for this purpose produce compact pumping devices that fit directly into the water supply pipe.
If possible, then instead of one large pumping station, you can purchase several small units of lower power, which are usually turned on right in front of the liquid entry points and various household appliances; their operation should be optimized as much as possible.
You can purchase pumping units at construction markets, in various stores. It is better to go to special branded centers. There the choice is much wider, and it is possible to get free consultation on pump parameters and their installation, warranty service.
Plumbing - part utility networks private house and apartment. Due to low pressure in the pipes, residents often receive insufficient water. This situation limits the possibility of using two plumbing points at the same time, and the washing machine and dishwasher simply do not turn on. The only way to change the situation is a pumping station designed to increase water pressure. The power and productivity of the installation is selected individually. The compact device is able to normalize blood pressure and maintain an optimal level.
For the city water supply network, the accepted GOST standards assume a pressure of 4 atmospheres. This indicator is rare, seasonal changes water consumption causes it to fluctuate in the range of 2.5-7 atmospheres. The normal operation of the shower, washing machine and sink will be ensured by the 2 atmosphere parameter; a jacuzzi or watering the garden will require raising it to 4. In reality, the pressure is often 1-1.5 atmospheres, excluding stable work plumbing equipment. High pressure is also a negative factor; it negatively affects network elements, leading to their rapid wear.
The problem of insufficient water supply is faced by residents of apartments on the upper floors and owners of private houses in summer period. First of all, it is necessary to exclude the possibility of pipe clogging or overgrowing lime deposits. If the problem is not in the diameter of the pipes, then installing pumping equipment will radically solve the problem. The pumping station will raise and stabilize the pressure in the system.
Classification of pumping equipment
A budget-friendly way to increase pressure in the water supply of an apartment or private house - installation injection pump. Devices can be divided into main groups:
- manual – after being plugged into the power supply, they are constantly in working condition. 24/7 operation leads to rapid wear and tear. If there is no water in the system, the device may burn out;
- automatic - the design includes a sensor that turns on the unit when the liquid moves. This option will cost more, but will last longer. The equipment is designed to pump clean water, so it is better to equip the system with a filter rough cleaning. The light weight and dimensions of the pump allow it to be installed directly on the pipeline.
Cooling of the pump motor is carried out in two ways:
- flow of passing liquid;
- fan mounted on the motor shaft.
Based on water-lifting pumps, water pressure increasing stations are produced.
If there is often no liquid in the pipes, it will be necessary to modernize the system and install a self-priming mini pumping station. This compact device is able to increase the pressure and maintain it at a given level.
The equipment design includes:
- membrane-type storage tank (hydraulic accumulator);
- centrifugal pump;
- system control relay.
The system automatically supplies water to fill the tank. The consumer uses the fluid accumulated by the accumulator. The main advantage of such a system is the prevention of pressure surges in pipes. In addition, the mini station provides a supply of fluid in the hydraulic accumulator, which can be used at any time.
As the water level drops, the pressure in the system decreases; at a given value, the relay turns on the pump again. The number of starts and service life of the pump depends on the volume of the tank; the larger it is, the less frequently the electronics operate, bringing the unit into working condition. The area of the apartment is limited, so it is problematic to find a place for a large tank; in addition, the absorption of water by the equipment leads to airing of the system. Installing a pressure booster station without permission from utilities is illegal, and getting approval will not be easy, so installing a booster pump is preferable.
How to choose the right unit
Among the main criteria for choosing a mini station to increase pressure in the system:
- Productivity – the amount of water that the installation pumps per unit of time (minute, hour).
- Power – selected based on the number of consumers. A high score is not always a plus. The station sucks water from a source (well, pipeline); if the pump operates faster than it is filled, the unit may be left without liquid and overheat.
- Correspondence of the model to the cross-section of pipes in an apartment or private house.
- Maximum height of water rise. This indicator is important for the use of equipment for autonomous water intake in a private house and when pumping water to the upper floors of an apartment building.
- Unit size. The dimensions of the station, including the hydraulic accumulator, must correspond to the area of the room where it will be installed.
- Noise level. This criterion depends on the cooling method; a “wet rotor” operates silently, while a “dry rotor” is noisy due to the fan blades.
- Range permissible temperatures. Devices can be for hot, cold water or universal.
- Installation type – vertical or horizontal, the choice depends on the characteristics of the room.
- Reputation of the manufacturer. Products from unknown companies have an attractive price, but their quality is questionable, and service centers none. It is better to buy high-quality and reliable equipment from a manufacturer that has positive reviews.
Well-known equipment manufacturers
DAB offers a compact station with electronically controlled E.sybox mini. It is characterized by the absence of noise and vibration, provides constant pressure in the pipes, and is easy to install. Lifting height – 8m, capacity – 80 l/min, membrane tank for 1 l. The mini unit can easily be placed under the sink.
The model of the German company Wilo PV-088 EA is mounted on metal pipes hot and cold water supply. The maximum pressure rise is up to 8 m, it works in manual and automatic mode. Cooling of the mechanism is carried out by a flow of liquid. Low noise level allows you to avoid discomfort when placed in an apartment.
The Grundfos UPA 15-90 pump operates in three modes: “Automatic”, “Manual”, “Off”. The automatic mode is controlled by a built-in sensor. Manual mode involves constant operation, so it is necessary to monitor the presence of water in the system. The unit is characterized by low noise level and light weight. Its capacity is up to 1.5 cubic meters. m/h, operating temperature – 60º C.
Unlike the listed models, the Jemix W15GR booster pump operates on the “dry rotor” principle. The mechanism is cooled by a built-in fan. This design is more productive, but creates noise during operation. It has three operating modes: “MANUAL” - manual, “AUTO” - automatic, “OFF” - turned off. Provides a pressure rise of up to 10 m, productivity – 1.5 cubic meters. m/h.
Installation of a pressure booster pump
Installation of equipment to increase pressure begins with shutting off the water. The work includes the following stages:
- The length of the pump along with the fitting is measured.
- At the installation site, the length of the section is marked and the pipe is cut out.
- WITH outside The resulting ends are threaded.
- Adapters are installed required diameter, the fitting included with the pump is screwed to them. An arrow on the equipment body indicates the flow movement; it is important to install it in accordance with the specified direction.
- To install a separate outlet, a three-core cable is pulled. Grounding must be carried out, and the connection is made through an RCD.
- The water is opened and the pump is checked for functionality. If the connection of the fittings is not tight enough, wrap up the FUM tape.
DIY station
If there is no device with the required parameters on the counter, you can make it yourself from components with the desired characteristics. A pressure boosting station consists of a small number of components and parts; it is enough to purchase a pump, a hydraulic accumulator of the required volume, and an automation unit. A 50-liter storage tank is suitable for a family of three; stagnation of water is also undesirable.
The control system should include:
- smooth pump start;
- dry running protection;
- overload protection.
During installation, all elements of the water pressure increase station are installed in one place.
Tips for choosing and installing a mini pumping station
- Give preference to the model with check valve, this design increases the safety of the equipment.
- Choose a station with a built-in filter; it will protect parts from foreign particles. If clogged, the element is removed and washed.
- To place the equipment you need warm room, otherwise at negative temperatures the water in the accumulator will freeze.
- To carry out maintenance without problems, install a shut-off valve before the pump.
In contact with
When you open the faucet in your home to simply drink water, and a sluggish trickle flows from it, the thought immediately comes to mind of installing it in the water supply main.
Adequacy water pressure in pipes is the key to the normal life of a person living in a private cottage, in a country house or in a high-rise apartment. This is very important for the trouble-free operation of household hydraulic machines and plumbing parts. This is one of the very important conditions for your comfortable living and the durability of the expensive water equipment of your home.
For normal operation For the main models of household hydraulic machines and plumbing units, a water pressure in the pipelines of 2 to 4 bar is sufficient. If you periodically or constantly have a lack of these indicators at the outlet of the intake taps, then you should understand the reasons for this deficiency and, if necessary, install booster pumps for yourself individually or for collective use.
Below we will describe the basic requirements for checking the performance of your water supply system, the criteria for choosing the appropriate equipment, and consider Various types pumps for increasing water pressure in mains from different manufacturers.
Key issues covered in this article
- Comparative scale technical characteristics water pressure in pumps of various types.
- Possible reasons shortage of water pressure in the mains.
- Types of pumps for increasing water pressure in pipelines.
- Read the instructions and install the pump.
Comparative scale of technical characteristics of water pressure in pumps of various types
Global pump manufacturers use for the pressure characteristics of pumps different types the following units of water pressure:
For quick approximate household calculations, approximate ratios of these quantities are suitable:
In practice, for the normal operation of household hydraulic equipment with automation, the use of flow valves and the operation of bathrooms, work geysers and boilers, it is enough to maintain water pressure in the pipelines within 2-4 bar for all major models of household water devices.
Possible reasons for the lack of water pressure in the mains
The lack of water pressure in your pipelines for high-rise apartments may be due to several reasons:
- Daily fluctuations in water pressure in the water supply due to the frequency of use of the resource by the residents of the house;
- Lack of design capacity of general-use pumping equipment from the service organization;
- Temporary deposits of rust and salts inside the pipeline that clog the body of the water riser:
- Clogged water filters in the water supply connection system:
In such cases, neighbors on the floor and residents of the upper and lower floors should be interviewed apartment building to find out what water pressure is usually in their apartments. This way you can identify the local cause of low pressure in your particular case. It will be possible to accept correct solution to eliminate these problems or settle on the option of purchasing a high-pressure water pump individually or for public use, having agreed on this issue with other residents of the entrance (riser) of the high-rise building.
In a private home, these reasons are of a similar type. But there may be various additional reasons for low water pressure in your pipeline:
- Large distance from the main water supply pump;
- Excessive elevation of the structure and location of the flow valves above the pump installation level;
- Pressure data mismatch power plant, with a specific layout of power and consumable units, etc.
Types of water pressure boosting pumps in pipelines
In practice, you can increase the pressure in the water artery using 2 well-known types of pumps:
- By inserting a circulation pump with a wet or dry rotor into the water supply line;
- By installing into the main line an additional self-priming power unit or an automatic pumping station based on of this type pump
Diagrams of approximate connection of pressure booster pumps of various types:
Electric circulation pumps help in cases where it is necessary to increase the water pressure in the pipeline with a stable supply, but low pressure, reaching no more than 1 - 1.5 bar. In multi-storey buildings, using this type of pump it is unlikely that it will be possible to create a sufficiently stable pressure for all residents of the riser, even if you install 2 or more pumps. This option will do more for an individual increase in water pressure in a separate apartment. This is, so to speak, a “home” option for stabilizing pressure.
For this reason, in apartment buildings with large number of floors, it is better to use a self-priming pump with higher capacity or a pumping station with appropriate automatic water pressure with its own hydraulic accumulator.
With this option, you will not bother yourself with the problems of turning the pump on and off; the automation will do it for you.
When installing any type of pump, it should be taken into account that if there is temporarily no water pressure at all in the taps of a high-rise building on the upper floors, then installing a booster pump will not correct this situation. The pump requires at least a minimum water pressure that meets technical limitations in order to increase it to the desired level.
If you installed any booster pump only in your apartment, then keep in mind that it will create a discharge effect in common pipeline before him. And air will be sucked into this rarefied space. It would be good if the pump was automatically protected from dry running and its motor would not burn out, but it would constantly turn off. In this case, you create an even greater pressure drop in the common water supply pipe. If other residents of your entrance or riser follow your example, this will lead to even more disastrous results with water and real “sanctions” from the water supply organization.
Self-priming pumps are limited by the amount of water rise along the installation height from the water surface to 7-8 meters (maximum 12). A large reservoir for a circular pump with a supply of water, you also cannot install it in an apartment average area. You will have to negotiate and cooperate with neighbors to install such a container in the attic of the house.
The most competent and comprehensive solution to these problems may be the installation of a full-fledged automatic station with a self-priming centrifugal pump. The power device must be great productivity. Contain your own hydraulic accumulator of the maximum possible volume and fully automate the water supply process. This station can be connected to the basement collector of the common riser of the general water supply or to autonomous source. This is the only way to create the required water pressure at the outlet of all taps and not aggravate the situation for the neighbors.
Selecting a water pressure booster pump
Circular pumps are divided into 2 groups:
We are accustomed to considering circular pumps only as elements of heating systems. But they have wider applications.
- Household pumps with wet rotor. They are more compact and quieter during operation. They do not require preventive maintenance to lubricate rubbing parts, since this occurs by washing the rotor shaft with water. They are easy and simple to install directly into the water supply pipe using a tie-in and do not require additional fastenings. But this group of pumps has low performance and low pressure indicators. In addition, these units are installed with a horizontal axis of the electric motor rotor.
- Circular pumps with a dry rotor have an asymmetrical housing shape towards the electric motor. They are cooled by a stream of external air from a special impeller. Require additional fastening to Wall. They have better ones technical capabilities in terms of pressure and performance. They require regular lubrication of rubbing parts. They create quite a loud noise when working.
Both groups are suitable for cold and hot water, but require constant manual control on/off mode.
To save yourself from this, you need to choose a circular pump equipped with a water flow sensor. Then the pump will start only when the supply tap is opened and there is water in the line.
The same effect can be achieved by installing a separate flow sensor on any group circular pumps. And if the pressure in the system is unstable and there is insufficient water in the water supply, you will need to install an additional pressure switch.
Some popular models of circular pumps from global manufacturers: Grundfos (Grundfos):
Circular pumps Jemix W15GR and WP series:
Pressure booster pumps from the Wilo brand, PB and PW series
- Self-priming centrifugal pumps can operate when water pressure increases, either independently or as part of automatic pumping stations.
- Specialized stations for increasing water pressure from main water pipelines of the Gilex VODOMET M brand are used for inserting into the underwater part of individual sources. They have an additional flow-through filter unit for supplying already cleaned drinking water:
Specially created pumping units increasing water pressure from Grundfos: CMBE 3-62, 5-62, 1-44, 1-75, 3-30, 3-93 and others:
Read the instructions and install the pump
To solve a problem with water supply, you should not chase any exorbitant indicators for pressure and pump performance. You just need to add some 1.0 – 1.5 atm to the existing pressure (10 – 15 meters above the flow tap).
So you should not have any questions about how to choose a pump, what characteristics it should have. It is enough to look at the instructions for this product or listen to the recommendations of the technical manager of the store where you decided to buy the installation. The descriptions of the pumps contain all the data on their connection to the water system (connection diagram), there are rules for installing a specific product and it is described what and how to connect in the required sequence.
As a last resort, we turn to qualified specialists for practical help in installing and configuring the pump at your dacha, cottage or high-rise building.
You can learn more about the operating principle of the listed pumps and how their automation works from the articles on our website in the section: or by calling our consultant.
Modern public utilities often do not supply water with the required parameters to the public mains. A pump to increase water pressure would be useful in some cases. But the choice of device depends on many factors. Sometimes a comprehensive solution can save the situation.
Technical parameters of water supply laid down in the standards
Modern household appliances are designed for water supply pressure of 4 bar. If there is less pressure in the tubes, the devices turn off. You can find out the pressure using a pressure gauge or using homemade device– a transparent tube 2 m long connected to a tap.
Equal physical quantities pressures are recognized: 1 bar, 1 at, 10 m water. Art., 100 kPa. Such indicators can be found in the pump data sheets.
The normal pressure for which pipes, connections, and gaskets are designed is 4 bar. At 6-7 bars, leaks appear in the line, at 10 the pipes can burst. You need to know this when choosing a pump to increase water pressure.
Is it always possible to install booster pumps?
In a private house, the lack of pressure in the main line is relieved installed pumps. At the same time, their power supply through the battery tank allows for stable input parameters. Install the devices in areas where it is necessary to increase the pressure after the pump. A pump for increasing water pressure differs from a centrifugal one in that it turns on periodically, upon request. The centrifugal apparatus in the system operates constantly.
There may be several problems in an apartment building:
- there is no required pressure in the manifold on the distribution comb for any reason;
- during periods of peak loads, water flows to the upper floors with interruptions in flow;
- in an apartment in different points the pressure is different.
Examinations should show the cause of the lack of pressure. There are cases when the pressure in the main line is normal, but the neighbor below narrowed the nominal passage when replacing pipes. It happens that the pipes are completely clogged with rust. In such cases, it is useless to install a pump to increase water pressure in an apartment with a common wiring. It is necessary to restore the conditional passage in the system.
A legal solution could be to install an accumulator tank in the basement, common to the riser, then all residents can use a pump that increases the pressure in the water supply on the common line.
If there is a general lack of water in the system, it is prohibited to install an additional pump to increase the pressure; penalties are comparable to the cost of the equipment.
Pump selection criteria
First of all, a pump is selected based on the outlet pressure, about 4 bar. It is important to know the dimensions, wet or dry rotor, noise level. When choosing a high-pressure pump, the determining factor may be the presence of automation or manual control.
For hot and cold water supply use different systems pumps Cold water systems are equipped with pumps from well-known manufacturers:
- WILO - the booster pump is recognized as the most popular. They are distinguished by their simple design, reliability and long term guarantees.
- – works silently, in demand, warranty is issued for 1 year
- OASIS is a brand that strives to get to the TOP, and so far it has succeeded due to simple device, reliability and low price.
- Gilex is a recognized domestic leader in the production of pumps.
Their models are compact and low noise. The installation pipes are standardized for Russian water utility systems.
Pumps for increasing water pressure come in two types, with a “wet” and a “dry” rotor. Devices with a wet rotor are installed in a pipe. The power part is located outside the pipe, is air-cooled, and is attached to the wall in a cantilever manner - a pump with a dry rotor.
High pressure water pumps on the manifolds operate continuously. More often they are equipped with not one, but several wheels; the pressure increases in steps. Such devices can create a pressure of several tens of atmospheres on the discharge line. Industrial installations high pressure units are available only with a separate air-cooled motor.
Installation of a pump in an apartment
First, you should distribute water to devices that require stable pressure. Installing a pump before wiring will allow you to get by with one device, which is turned on manually or automatically.
Before starting work, make sure that the reinforcement does not allow the agent to pass through. To guarantee, the common cold water riser must be shut off from the collector.
Steel pipes must be welded by a professional welder. Polypropylene water conduits are connected with special fittings; a soldering iron is required. Shut-off valves must be installed before and after the pump.
It is important to correctly install the high-pressure water pump impeller in the direction of fluid flow, as indicated on the arrow. A general booster pump can be installed immediately after the main valve, then pressure is maintained at all sampling points. After checking the system for tight connections, plug the pump into the outlet.
Using the accumulator tank and high pressure pump
Such a scheme will be required if multi-storey building There is a chronic lack of pressure on the upper floors. The activation of the high pressure pump is caused by an increase in the flow rate in the line to a certain value. Since pressure and flow rates are interdependent, an increase in flow rate is a signal to turn on the high-pressure pump.
When turned on, the pump will create the necessary pressure in the system on all floors. Thus, it is possible to solve the problem of water supply for residents in a cottage or multi-story building.
Cost of booster pumps
The market offers models of pumps for increasing water pressure at a price corresponding to the prestige of the brand, degree of automation, and parameters. The minimum cost for a pump is 2,500 rubles. Brands that work on the “set it and forget it” principle can cost as much as 30,000 rubles.
Industrial installations for highways are purchased by agreement. In any case, installing a high-pressure pump will require a pipe inspection and an installation project approved by the housing office.
Video about the operation of a booster pump in a water supply system