The valve disc of the dual plate check valve is designed with double valve plate. The opening and closing of the double valve plate is just like the opening and closing of the butterfly wings, so it is called butterfly check valve. It is also called double disc check valve.
Series - 150 To 900
This product is widely used in chemical industry, electric power, petroleum and natural gas, metallurgy, textile and other fields to prevent medium backflow.
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
- Extended leg springs prevent seat wear caused by scrubbing
- Springs are precisely calculated to increase the responsiveness of the disc, thus reducing damaging effects of water hammer
- Resilient or metal-to-metal seat available
- BUNA-N, Viton®, EPDM (and other materials as required) molded into the body
Product Specifications
- Size 8″-60″ DN200-DN1500
- Pressure Class "150, 300, 600, 800, 900" | PN10-PN40
- End Connection Flange (RF, RTJ)
- Body Material WCB, CF8, CF3, CF8M, CF3M, B148, A105, LF2, F304, F316
- Disc Material WCB, CF8, CF3, CF8M, CF3M, B148, A105, LF2, F304, F316
- Seat Material EPDM, NBR, PTFE, hard seal
- Stem Material A182 F6a, 410, 420, 304, 316, 17-4PH, F11, etc
- Design Standard API594, API6D
- Face to Face Standard ASME B16.10/API594
- Test Standard API 598
- Temperature Range -50℃~650℃
- Actuator Options /
-
Structure Style
- Full Port
-
Connection Standard
- Flange Drilling: ASME B16.5, ASME B16.47