Body: DI, C.S., S.S, alloy steel Disc: DI, C.S., S.S, alloy steel Stem: S.S Sealing: Rubbers, PTFE Body: DI, C.S., S.S, alloy steelDisc: DI, C.S., S.S, alloy steelStem: S.SSealing: Rubbers, PTFE Pneumatic wafer type soft sealed stainless steel butterfly valve