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

Wet rotor circulation pump, with flanged connection. (Flange perpendicular to shaft). Pre-selectable speeds to adjust the capacity on "S" versions. Cast iron body for hot-water heating systems of all kinds, industrial circulation systems, cold-water systems and air-conditioning systems. Features: Suitable for any installation position with horizontal shaft; terminal box in 3-6-9-12 o'clock position Three pre-selectable speed stages for load adjustment ("S" type only) Impedance protected motor, motor protection not required Cable entry both sides of terminal box Quick connection spring clips for simple electrical connection Steel Terminal Box Fits all Competitor's Models Powerful Starting Torque Ultra Quiet Reliable Wet Rotor Technology Optional Check Flange Set Automatically Vented Materials: Pump housing: Grey cast iron (EN-GJL200) Impeller: Engineered Composite (PP - 40% GF) Shaft: Stainless steel (Cr) Bearing: Metal-impregnated carbon