Two plates are fixed onto the valve body with a spindle on which two torsion springs are equipped for installing the butterfly plate onto the valve body sealing face.
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Wafer Type Dual Plate Check Valve: Two plates are fixed onto the valve body with a spindle on which two torsion springs are equipped for installing the butterfly plate onto the valve body sealing face. The butterfly plate pressed by the springs is opened by relying on the medium pressure, and the valve is closed by the spring force and the medium pressure under backflow. It can be installed on horizontal and vertical pipelines.
Design Features
Design standard as per: API 594, API 6D, ASME B16.34, GB/T 12236.
Compact and reasonable product structure, reliable tightness and good performance;
Small volume and light weight;
Applied widely;
Rapid closing and flexible actions of the valve clack
Small closing impact, water hammer is not liable to be generated;
Smooth fluid passageway and small fluid resistance;
Product Range
Body material: carbon steel, stainless steel, alloy steel
Nominal diameter: 1/2″～48″（DN15~DN1200）
Pressure range: Class150～2500（PN10~PN420）
End connection: RF, RTJ
Working temperature:-196℃～+560℃
| Brand | 3D |
| Valve Type | Wafer Type Dual Plate Check Valve |
| Valve Material | Cast steel, stainless steel, special alloy, etc |
| Valve Test | 100% quantity tested before delivery |
| Valve Guarantee | 18 months from the date of dispatch ex works, or 12 months from date of commodity installation. |
| Valve Painting | Customer request |
| Valve Package | Wooden case |
| MOQ | No requirement |
| Valve Certificate | API 6D/CE/ISO9001/ISO14001 |
| Delivery Detail | Shipped in 4 or 6 weeks after payment |
| Port | SHANGHAI |
| Payment Terms | L/C,D/A,D/P,T/T |
| Certificate Offered | Packing List，Commercial Invoice，Test Reports and Material Certificates，Certificate of quality and quantity, Seller’s Certificate of Guarantee |