The dual plate wafer check valves has two spring loaded half-moon shaped discs that rotate about their shaft. The disc plates are kept shut by the torsion spring. When fluid flows in the forwards direction, the pressure of the fluid causes the disc plates to hinge open, allowing flow. Dual plate check valve is closed by the spring as soon as flow ceases, before any reverse flow can occur.
Series - 150 To 2500
Design Features
- Light weight, versatile design, 80 to 90% lighter than conventional full-body check valves
- Reduces pipe supports, simplifies piping, easier, less costly installation
- Reduced thermal and seismic considerations
- No need for additional expensive support
- Optimum space utilization; simplified piping
- Spring-loaded, double door design has low cracking pressure
- Discs open 85° to ensure positive closing
- Materials and trims available for all services within temperature range
Product Specifications
- Size 2″-8″ DN50-DN200
- Pressure Class "150, 300, 600, 800, 900, 1500, 2500" | | PN16-PN200
- End Connection Wafer Type
- Body Material WCB, CF8, CF8M, CF3, CF3M
- Disc Material WCB, CF8, CF8M, CF3, CF3M
- Seat Material F6a, STL6, 304,316, Hastelloy, Monel, etc
- Stem Material 2Cr13, 304, 304L, CF8M, CF3M
- Design Standard API594, API 6D, ASME B16.34, DIN3356, JB/T8937
- Face to Face Standard API 594, API 6D, DIN3202, JB/T8937
- Test Standard API598, ISO5208, DIN3230, JB/T9092
- Temperature Range -29℃~425℃
- Actuator Options /
-
Structure Style
- Full Port, Dual Plate
-
Connection Standard
- Flange Drilling: ASME B 16.5/ASME 16.47, DIN2543-2545, JB/T9112~24