HSH-Flo 3/4" 110V Hot Water Circulator Pump / Circulation Pump SS NPT For Solar Heater US Plug Rated Power:93/67/46W Inlet/Outlet:3/4"NPT Voltage/Frequency: 110V/60HZ Super silent, environmental protection, aesthetics, ease of installation. Built-in high sensitive electronic sensors, the water flow when we open the switch. Materials,Pump housing:stainless steel;Impeller: Corrosion-resistant, Composite, PES ;Shaft: Ceramic;Bearing: Carbon axial Super silent, environmental protection, aesthetics, ease of installation.