BOOSTER PUMPS

What is a booster pump set and how does it work?

A booster pump set is a pump system that delivers water at steady, adequate pressure to faucets where mains pressure is insufficient or water is drawn from a storage tank. A basic booster pump set consists of a pump, a pressure tank (expansion vessel), a pressure switch or electronic pressure controller (hydromat), a pressure gauge, and fittings. When a faucet is opened and pressure in the system drops below the set value, the pump starts; when the faucets are closed and pressure reaches the upper value, it stops. The tank smooths this cycle and prevents the pump from cycling on and off too frequently.

Types of booster pump sets

• Domestic booster pumps: Compact packaged systems for detached houses, duplexes, and low-rise buildings.
• Booster pump groups: Two-, three-, or multi-pump systems, often variable-speed, for multi-story buildings, housing complexes, hotels, and industry.
• Pressure booster pumps: Small inline pumps that increase water pressure for a single apartment or appliance.
• Hot water booster pumps: Provide pressure in solar electric water heater and hot water systems.
• 12 V and 24 V booster pumps: Models compatible with battery-powered systems for caravans, boats, and off-grid use.
• Fire pumps: Booster pump sets that supply firefighting water pressure in fire suppression systems.

Booster pump selection: floors, apartments, and flow rate

The two key values in booster pump selection are required flow rate and pressure. Flow rate is determined by the number of faucets, showers, and appliances that may be in use simultaneously. Pressure is the sum of the building's height, the pressure required at the top-floor faucet, and pipe losses. Manufacturers describe their products by number of floors and apartments to simplify this calculation; expressions such as "4 floors, 8 apartments" in product names indicate this approximate capacity. Whether water is drawn from a tank or the mains, suction lift, and the age of the pipework also affect the selection.

Installation and maintenance

Install the booster pump in a location protected from rain and frost, well-ventilated, and where water can be drained. Using a foot valve or check valve on the suction line prevents the pump from losing its prime. The tank's air pre-charge pressure should be set slightly below the pump cut-in pressure and checked at least once a year. The pump cycling on and off too frequently usually indicates that the tank pressure has dropped or the membrane has failed.

Frequently asked questions

What does the booster pump tank do?

By storing pressurized water, it prevents the pump from running every time there is a small demand. Because the pump activates less often, energy is saved and motor life is extended.

What is the difference between a pressure controller booster pump and a tank-based booster pump?

A pressure controller is an electronic control device that starts the pump when a faucet is opened and stops it when flow ceases; it does not require a large tank. Tank-based systems cycle less frequently and are more stable under heavy use.

What is the advantage of a variable-speed booster set?

It adjusts pump speed according to demand, maintaining constant pressure in the system and reducing energy consumption. Pressure fluctuations and water hammer are also significantly reduced.

Can I get help selecting a booster pump set?

You can contact us via chat with the number of floors and apartments, whether water is drawn from a tank or the mains, and your existing system details.