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- Dual Plate Check Valve
Technical Detail
Seat Leakage:
Class IV for Flexible Metal Seats, Class VI for PTFE, EPDM, Viton Soft Seats
Design And Manufacturing:
API 594, API 6D, ASME B16.34
Size Range :
2” to 24”
Pressure Rating:
ASME Class 150 / 300 / PN 10 / PN 16
Valve Face To Face Dimension:
EN 588 / API-594 / ASME B16.10
Flange Standard Conformity:
ASME B16.5 150# RF
Inspection & Testing:
API 598 / BS EN 12266-1
Description
The Dual Plate Check Valves design is the result of attempts to solve the problems associated with the swing check valve and lift check valve. It employs two spring-loaded plates hinged on a central hinge pin. When the flow decreases, the plates close by a torsion spring action without requiring reverse flow.
Dual Plate check valves are used in pipe lines to prevent reverse flow water and water hammer the pumps from rising main.
Features
- Lapped Body and disc seat for drop tight seat.
- High torsion spring will ensure quick valve close and long life
- Flexible installation to suit pipe line
- Light weight, versatile design
- Spring loaded, double door design has low cracking pressure
- Resilient or metal seat available
Material Construction:
| Description | Material |
| Body, Cover | C.I. / WCB / CF8 / CF8M |
| Disc | C.I. / WCB / CF8 / CF8M |
| Seal | Nitrile / EPDM / Silicon / Viton / PTFE /GFT |
| Hinge Pin | SS 410 |
| Bearing | SS |