STAIRS HW series residential and light commercial hot water circulator pumps constitute a complete range of 3-speed circulator pumps. The pumps can be used in both open and closed systems. HW pumps are of the canned-rotor type, i.e. pump and motor form an integral unit without a shaft seal and with only two gaskets for sealing. The bearings are lubricated by the pumped liquid. This pump has 130mm or 180mm port to port dimensions to be chosen.
Applications
Solar water heating circulation
Floor heating circulation
Air condition circulation
Hot water boiler boosting
Heat pump circulation
Features
Easy set-up and installation
High efficiency for low electricity bill
Robust construction for better reliability
Dry-run protection for longer product life
Quiet operation for better life quality
No sealing problem, No leakage
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