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Application This valve has two styles: electric-pneumatic regulating valve and manual regulating valves, used in automatic control system to control the pressure, flow, level, temperature and tank level. Body Material Material contacted surface: 304 or 316L. Vale plug seals choice soft seals(EPDM or PTFE) Metal with Metal A/M Regulating Valve Style Standard: tubing welding joint, ball valve body, EPDM soft seals. While supplying air pressure is 0, Valve is clos(Normally Close) Localizer: I/P Switch Signal Range:4~20mA(Standard) Other Style Option Aseptic style(PTFE diaphragm or 316L diaphragm) Localizer: P/P Switch Valve plug normally open Surface Finish ID: Sandblast Ra≤1.6μm polishing Ra≤0.6μm OD: polishing Ra≤0.6μm