Wafer type butterfly valve: Designed according to BSEN593 and MSS SP-67 and API 609 and compatible with ANSI 125/150, BS4504, DIN PN10/PN16 flanges Size: DN40-350mm Rating: PN10/16, ANSI125/150 Material of main parts: Body: cast iron, ductile iron, stainless steel, cast steel (WCB) Disc: Monel, ductile iron, stainless steel, Al-bronze, ductile iron with nylon coated Seat: EPDM or NBR or PTFE or VITON or vulcanized in body Stem: SS416 or SS316 or Monel Pin: SS316 or Monel Operated: handle or wormgear, pneumatic, electric actuator