Disc: Ductile Iron, Stainless Steel, Titanium Steel, Copper Alloy etc.
Seat: Nitrile Rubber (NBR), Chloroprene, Chlorosulfonated Polyethylene (Hypalon), Silicon,
Fluoroelastomer (VITON)
Ethylene-Propylene-Diene Monomer (EPDM), Polytetrafluoroethylene (PTFE), Caoutchouc etc.
ASTM Pressure Classes 150 Lb-Wafer Ends.