JMA Wafer Its special elastomeric seat design (identical to JMC model) provides bubble tight shut off performance from full vacuum (1 torr) up to 16 bars (240 psi) and offers a significant range of angular tightness (+/- 5°). Working pressure available: PN10 (150 psi), PN16 (240 psi). Working temperature from -15°C to +130°C Materials: Ductile Iron, Aluminium bronze, stainless steel according to applications. Face to Face dimensions in acc. with ISO 5752-20 / EN 558 / DIN 3202-K1 / BS5155 / MSS SP67 / API 609 tab.A. Flange connection in accordance with all major international standards: ISO, EN, DIN, BS, ANSI, MSS SP44, JIS... Type of actuators available: Manual operators (levers or worm gears), pneumatic or electric actuators and all associated control accessories. Approvals: UL, FM, ULC, APSAD, WRC... Applications: Fire protection systems, HVAC systems and motorized ON/OFF or Modulating butterfly valves.