Wafer Type Dual Plate Check Valves are maintained open by the flow of fluid in the forward direction and are closed by back pressure of the fluid or by the weight of the closing mechanism or by a spring force.
Small in size, light in weight, compact in structure, easy in maintenance. Two torsion springs are used excreting on each of the pair valve plates. Which close the plates quickly and automatically. The quick-close action prevents the medium from flowing back and eliminates water-hammer effect. This valve is short in length, so that it is rigid and easy to mount. It is easy to install on pipeline which is laid horizontally or vertically. This valve is tightly sealed without leakage under the pressure water test. Safe and reliable in operation, high interference-resistance.
Design Standard: API 594
Rating:ANSI 150lb ~ 2500lb
Body Materials: Cast Steel, Stainless Steel, special Alloy Steel
End Connection: Wafer, Lug, Double Flange
Design Feature: Application:
Dual plate or single plate
Light-weight & compact design
Spring loaded disc
Resilient or Metal seated
Our Wafer Type Dual Plate Check Valves are designed and manufactured to provide maximum service life and dependability. All Wafer Type Dual Plate Check Valves are full ported and meet or exceed the design requirements of industrial standard. Valves are available in a complete range of body/bonnet materials and trims.1. Range of Materials: Standard body/bonnet materials include ten grades of carbon, low alloy and stainless steels. For special applications they can be supplied in other grades of alloy and stainless steel. There’s a full range of trim materials to match any service. Optional packing and gasket materials are available for a full range of service conditions.2. Easy Maintenance: the valve can be matched up with the service conditions, thus enhancing operability and lessening the possibility of binding. 3. Easy Operation: the valves easily accessible for repair or replacement. Packing swing bolts on most valves simplify packing replacement. 4. Actuator Flexibility: All valves are available with hand-wheels, gearing, electric motor actuators or pneumatic or hydraulic cylinder actuators. 5. Longer Life: ugged construction provides years of reliable service. 6. Convenient maintenance:Convenient maintenance, simple structure of ball valve, seal ring is generally mobile, easy to remove and replace.7. Good sealing performance by the erosion of full-time small sealing surface8. Wide application: Wide range of applications, from small to a few millimeters, to several meters, from high vacuum to high pressure can be applied