... or 2-48'' PN10/16/25 With CE and ISO certificate Standard:DIN,BS,API,JIS,MSS etc Electric actuator butterfly valve ... steel, carbon steel, Al bronze or other materials you require. c) Seat: EPDM, NBR, PTFE, VITON d) Stem: Carbon steel, SS304 ... , SS416, SS4316) Working temperature: -10.C- 120.C 7) Long working life without leakage Company Profile: We, Tianjin ...