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Hot water pumps constitute a complete range of 3-speed circulator pumps, available both in 50 and 60 Hz.
The pumps can be used in both open and closed systems.
HH & HW pumps are of the canned-motor type, i.e. pump and motor form an integral unit without a shaft seal and with only two ceramic bearing for sealing. The bearings are lubricated by the pumped liquid.
STAIRS HH series is a home mini booster pump designed for water pressure boosting of potable water and residential hot water. The pump provides extra water pressure to showers, taps, and similar water fixtures, and to activate water heaters. The pump is equipped with a flow switch which starts or stops the pump when a water fixture is turned on or off. To avoid cavitation noise and risk of damage to the pump bearings, a minimum inlet pressure of 1.5 meter head is required during operation. The Comfort Home MB series pump is mainly for use in open systems, but can also be installed directly on the incoming water mains supply to feed a combination boiler, or a water heater.