The double-disc wafer body check valve adopts a flange body design and has a relatively short face-to-face dimension. Double disc spring loaded to provide low cracking pressure. Every Wafer Style Double Door Check Valve with Retainerless Valve that we ship is tested to API 598 and must meet or exceed all applicable API, ANSI and ASTM standards.
Body Size: 4 inches (100 mm) Body Material: Ductile iron, stainless steel, aluminum, Disc: Usually stainless steel Seat: Rubber, EPDM, PTFE, Stem: Stainless steel Operating Temperature Range: Depends on materials, but usually -20°F to 250°F (-29°C to 121°C) Pressure Range: Can handle pressures up to 150-300 psi depending on materials and design Actuation: Manual lever, gear operator, pneumatic actuator, electric actuator End Connection: Flanged, wafer, lug style Flow Characteristics: Butterfly valves provide relatively high capacity and have quick open/close ability, but do not provide tight shutoff compared to ball or gate valves Typical Applications: Isolation, throttling, control in water, air, gas, steam and other non-viscous fluid applications
Body Size: 6 inches (150 mm) Body Material: Ductile iron, stainless steel, aluminum, Disc: Usually stainless steel Seat: Rubber, EPDM, PTFE, Stem: Stainless steel Operating Temperature Range: Depends on materials, but usually -20°F to 250°F (-29°C to 121°C) Pressure Range: Can handle pressures up to 150-300 psi depending on materials and design Actuation: Manual lever, gear operator, pneumatic actuator, electric actuator End Connection: Flanged, wafer, lug style Flow Characteristics: Butterfly valves provide relatively high capacity and have quick open/close ability, but do not provide tight shutoff compared to ball or gate valves Typical Applications: Isolation, throttling, control in water, air, gas, steam and other non-viscous fluid applications
Size: DN40-DN1200 End Flange: ANSI B 16.1 EN1092 AS2129 Face to Face: ANSI B 16.10 Top Flange: ISO 5211 Normal Pressure: PN1.0/1.6Mpa(150/200PSI) Body: Cast Iron/Ductile Iron/WCB/ALB/CF8/CF8M Disc: Cast Iron/Ductile Iron/ALB/CF8M/CF8 Stem: SS416/304/316/431 Seat: Hypalon/EPDM/Neoprene/NBR/Viton/Silicon/PTFE Suitable Temperature: -45C to 150C Features: 1. Structure simple compact, the weight is light, 90' revolves, the switch is rapid 2. Designs reasonably, the assembling and dismantling is easy, to be advantageousFor the service 3. Uses the eccentric structure, reduces the seal packing collar the friction, lengthensThe valve service life 4. Completely seals, divulges for zero
