Wilo Star S 21 RFC, 3-Speed Cast Iron Star Series Circulator, 1/12 HP

Features: Rotating flange and installable check valve included Three-speed cast iron model Stainless Steel Shaft Quick Connect Wiring Steel Terminal Box Fits all Competitor's Models Powerful Starting Torque Spin-balanced rotor for silent operation Reliable Wet Rotor Technology Automatically Vented Materials Pump housing: Cast Iron with Installable Check Valve Impeller: Engineered Composite (40% GF) Shaft: Stainless steel Bearing: Metal-impregnated carbon