JMC Butterfly valves shall be rubber lined type, with a replaceable elastomeric seat covering the whole internal body surface and extending over the body faces to act as flange gaskets. The elastomeric seat design shall ensure bi-directional bubble tight shut off (zero leakage) and full tightness against flange surfaces. JMC Butterfly valves shall be Full-lugged type or Wafer allows Bi-directional dismantling of both upstream and downstream piping system without disassembling the valve from the line. JMC Butterfly valves shall comply with the applicable ISO standards: - Face to face dimension in accordance with ISO 5752 series 20. Valves working pressure shall be in full compliance with ISO PN10, 16, 20, 25* (Bars).
Available in wafer, lugged and double flanged
One piece body design acc. ISO 5752 series 20 (DIN 3202 K1)
Suitable for severe vacuum and up to 25 bar bubble tight shut off
The field replaceable seat fully isolates the body and shaft from the media
Bed grooved seat construction for tight shut off at full rated pressure, also for end of line service