API6d Forged Steel Dual Plate/Double Plate Wafer Type Swing Check Valve (GAH76H)

Dual Plate Wafer Check Valve Application

The Dual Plate Wafer check valve is a energy-saving product. It is manufactured by us GOOLE VALVE based on  the foreign advanced technology and in accordance with relative international standards. This product is featured by excellent retaining performance, high safety and reliability and low flow resistance. It is suitable for systems in the industries of petrochemical food processing,          medicine, textile, paper-making, Water supply, drainage, metallurgy, energy and light industry, etc. used as a check valve in one way.

Dual Plate Wafer Check Valve Specification

Size: NPS 2"~40"
Pressure: Class 150~1500
Material: WCB,LCB,CF8,CF8M,CF3M,WC6,C5,C12
Design & Manufacture Std.: API 594,API 6D,ASME B16.34
Face to Face Std.: API 594,API 6D
End Connection Std.: ASME B16.5,ASME B16.47
Test Standard: ISO5208,API 6D

Dual Plate Wafer Check Valve Standard

Design and Manufacture: ANSI B16.34, API 6D

Face to Face: API 6D

Flange Dimension: 2"-24" to ANSI B16.5,  26"-36" to MSS-SP-44 to API 605 as request.

Test and Inspection: API 6D

Shell Test: 150LB, 450 PSI,  300LB, 1125 PSI.

Seat Test: 150 LB:315 PSI(HYDROSTATIC), 80 PSI(AIR)

           300LB: 815 PSI

Dual Plate Wafer Check Valve Features

1. Small in size, light in weight, compact in structure, easy in maintenance.
2. Two torsion springs are used excerting on each of the pair valve plates, which close the plates quickly and automatically.
3. The quick-close action prevents the medium from flowing back and eliminates water-hammer effect.
4. This valve is short in length, so that it is rigid and easy to mount.
5. It is easy to install on pipeline which is laid horizontally or vertically.
6. This valve is tightly sealed without leakage under the pressure water test.
7. Safe and reliable in operation, high interference-resistance.
8. The connection dimensions of flanges accord with the standards of GB4216-84 GB4216.5-84.
9. The face to face dimensions are in accordance with ISO5752-82. The stem of the valve should be perpendicular to the horizontal level when the valve is mounted on horizontal pipeline. For vertical installation the direction of flow should be downward.

Main Parts and Material.