Booster pump / Domestic waterworks

WILO HWJ 204 X EM Booster Pump 1200 W, 24 l Tank

50 m head and a 24 l diaphragm tank for steady pressure throughout the house.

The WILO HWJ 204 X EM booster pump is a ready-to-install unit combining a self-priming jet pump, a 24-litre diaphragm tank and a pressure switch. It draws water from a well, borehole or tank and keeps household and irrigation lines under constant pressure.

50 m head reaches the top floor

A flow of up to 2850 l/h covers several taps, a WC cistern and a garden hose at the same time. The 6 bar maximum working pressure suits a two-storey house with an outdoor water line.

Suction from 8 m depth

The self-priming jet design lifts water from a pit, well or underground tank without submerging the pump. Suction and discharge ports are 1", a standard thread for household and garden pipework.

24 l diaphragm tank protects the motor from frequent starts

The stored water volume covers short draw-offs, so the motor only starts once pressure actually drops. Fewer starts extend the life of both the motor and the pressure switch.

Corrosion-resistant hydraulics for clean water

The unit handles clean water between 5 and 35 °C and tolerates ambient temperatures up to 40 °C, allowing installation in a basement, pump pit or outbuilding. Protection rating is IP 44.