Low Noise, water heater boosting pump: High efficiency motor and rotor design,30% higher efficiency than competitors with similar size.; 5DB adopting ultra-quiet design,noise 5db lower than industry average; No leakage.More reliable,static sealing design,imported Japanese,strict testing,no leakge forever. Typical application: water heater recirculating system; intelligent toilet; heating system,gas boiler, boosting applications; Max flow rate(L/Min) 24L/Minute; Max water head:11 M; Voltage:12V/24V;Current:2.2A,2.8A,1.5A; Power:26.4W,34W,36W,48W