Introduction of Dual Plate Wafer Check Valve
Dual plate, spring loaded, wafer style design for the protection of gas or liquid piping systems
Industry Standards: ASME B16.1, B16.5, B16.24, B16.34, B16.47 and B31.1
NACE MR-01-75
Description
- 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.
Specifications
| Valve Size | 2″–76″ DN50–DN1900 |
|---|---|
| Pressure Class | 150LB to 2500LB PN10 to PN250 |
| Materials | WCB, CF8, CF3, CF8M, CF3M, B148, A105, LF2, F304, F316 |
| Design and Manufacturing Standards | API6D |
| Face to Face Standards | ASME B16.10 |
| Flange Dimension Standards | ASME B 16.5, ASME B16.47, EN1092-1 |
| Pressure Test Standards | API598, API 6D |
| Fire Safety Test Standards | API607 |
| Quality/Product Certifications | ISO9001, ISO14001, ISO18001 |
| Fugitive Emissions | ISO 15848-1, API 622 |
| NACE | NACE MR 0103 NACE MR 0175 |
| Valve operator options | – |
| Shutoff Class | API 598 (Zero Leakage), |
| Bore | Full Bore |
| Process Connection Types | Wafer type, Flange Type, Lug Typt, |
