Hayward BYCS1040E1LGA Butterfly Valve, 4 in Pipe Size, Concentric, 150 psi Max Pressure CWP, Wafer, PVC, 8 Bolt Holes G2058506 730 RPM Specification A60 OBNA2 Application 730 RPM Specification A60 OBNA2 Application Aluminum Hook Thickness 19 64 in Style Wafer Connection Type Wafer Pipe Size 4 in Body Material PVC Disc Material PVC Disc Alignment Concentric Liner Material EPDM O Ring Material EPDM Seal Material EPDM Stem Material 410 Stainless Steel Handle Type Lever Handle Material PVC Handle Locking Locking Handle Length 9 PVC (polyvinyl chloride) general service butterfly valves are made from a corrosion and chemical resistant plastic resin