When is it necessary to install a pump to increase the water pressure
Modern public utilities often do not provide the water supply of the required parameters to the common main. A pump to increase water pressure would be useful in some cases. But the choice of the device depends on many factors. Sometimes a complex solution can save the day.
Read also the article in the topic: pumping station for a private house - connection diagram!
Technical parameters of water supply, laid down in the standards
Equivalent physical pressure values are recognized: 1 bar, 1 atm, 10 m of water. Art., 100 kPa. Such indicators can be found in the pump passports.
The pressure for which pipes, connections, gaskets are designed is considered normal - 4 bars. At 6-7 bars, leaks appear in the line; at 10, pipes can break. 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 line is stopped by installed pumps. At the same time, their feeding through the accumulator tank allows them to have stable parameters at the input. Install devices in areas where you need to increase the pressure after the pump. A pump for increasing water pressure differs from a centrifugal pump in that it is switched on periodically, upon request. The centrifugal apparatus in the system works constantly.
In an apartment building, there may be several problems:
- there is no required pressure in the manifold on the manifold for any reason;
- during peak loads, water is supplied to the upper floors with interruptions in the flow;
- in the apartment at different points the pressure is different.
Examinations should show the cause of the lack of pressure. There are cases when the pressure in the line is normal, but the neighbor below narrowed the conditional passage when replacing the pipes. It happens that the pipes are completely clogged with rust. In such cases, it is useless to install a pump to increase the water pressure in an apartment with a common wiring. It is necessary to restore the conditional passage in the system.
A legal way out is 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 a common line.
With a general lack of water in the system, it is forbidden to install an additional pump to raise the pressure, the penalties are comparable to the cost of the equipment.
Selection criteria for pumps
First of all, a pump is selected based on an indicator of 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 presence of automation or manual control can be decisive.
Different pump systems are used for hot and cold water supply. Cold water systems are equipped with pumps from renowned manufacturers:
- WILO - the booster pump is recognized as the most purchased. They are distinguished by a simple device, reliability and a long warranty period.
- Grundfos - works silently, is in demand, the warranty is issued for 1 year
- OASIS is a brand that seeks to get into the TOP, and so far it has been successful due to its simple device, reliability and low price.
- Jileks is a recognized domestic leader in the production of pumps.
Their models are compact and quiet. The branch pipes for installation are unified for Russian water utility systems.
Pumps for increasing water pressure are of two types, with "wet" and "dry" rotor. Wet rotor devices are installed in a pipe. The power section is located outside the pipe, has air cooling, is cantilevered to the wall - a pump with a dry rotor.
The high pressure water pumps on the manifolds run continuously. More often they are equipped with more than one, several wheels, the pressure increase occurs in steps. Such devices can create a pressure of several tens of atmospheres on the discharge line. High pressure industrial units are only available with a free-standing air-cooled motor.
Installation of the pump in the apartment
First, you should carry out the distribution of water to devices that need a stable pressure. Installing a pump before wiring will make it possible to do with one device, which is turned on manually or automatically.
Before starting work, make sure that the fittings do not leak the agent. To ensure that the common cold water riser must be closed off from the manifold.
Steel pipes should be welded by a professional welder. Polypropylene water pipes are connected with special fittings, a soldering iron is required. Be sure to install shut-off valves before and after the pump.
It is important to correctly position the high pressure water pump impeller in the direction of fluid flow as indicated by the arrow. A common booster pump can be installed immediately after the main valve, then the pressure is maintained at all points of the selection. After checking the system for tightness of connections, the pump is plugged into the outlet.
Using the accumulator tank and high pressure pump
Such a scheme will be required if a high-rise building chronically lacks pressure on the upper floors. The inclusion of the high pressure pump is due to an increase in the flow rate on the line to a certain value. Since the head and flow rate are interdependent, an increase in flow is a signal to turn on the high pressure pump.
When switched on, the pump will create the required 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-storey building.
The cost of booster pumps
The market offers models of pumps for increasing water pressure at a price corresponding to the prestige of the brand, the degree of automation, and parameters. The minimum pump costs 2,500 rubles. Brands that work on the principle: set and forget can cost 30,000 rubles.
Industrial installations for highways are purchased by agreement. In any case, for the installation of a high-pressure pump, a pipe inspection and a project of the installation, agreed upon in the housing office, will be required.
Video about the operation of the booster pump in the water supply system