Grundfos Pumps offers several models of circular pumps for domestic hot water recirculation systems, including the model UP15-10B5/TLC, featuring a bronze housing with 1/2" and 3/4" sweat; wet rotor design for quiet, maintenance-free operation; stainless steel rotor cladding and canister construction to prevent corrosion; composite impeller; built-in 6-ft., 115 volt ac line cord with a NEMA 3-prong male plug; fully grounded connection and UL listing.