Air Cushion

The SWC series swing check valve provides users with an AWWA C-508 solution for more arduous check valve applications including sewage and slurry. The substantial shaft diameter is ideal for those difficult applications where back pressure can reach higher values quickly.

SWC Series Overview
Nominal Inside Diameter 3″-36″ Sizes Available
Construction Materials Body: Cast Iron (ASTM A126 Class B)
Disc: Ductile Iron (ASTM A536 54-45-12)
Bolts/Nuts: Bolt: Steel (ASTM A307) Nut: Stainless Steel (ASTM A194 Type 316)
Seat: Buna-N Rubber
Paint: Tnemec 141
Pressure Rating Class 125 and Class 250

Many Crispin Valves are available with special materials that may not be listed. Please contact the factory to inquire about custom orders.