Cast Iron Wafer Dual Plate Check Valve

Thecast iron Wafer Dual Plate check Valve has performed well in pump outlets in high-rise buildings, district heating networks and food processing and cleaning systems, such as the DN200 model, which successfully suppressed pump body vibrations caused by chilled water backflow in the air conditioning system of a commercial complex. Its low flow resistance (Cv value 0.6~1.2) and maintenance-free characteristics make it the preferred equipment for both cost-effectiveness and reliability in low-pressure scenarios.

Structural and design features

cast iron Wafer Dual Plate check Valve have Two symmetrical round valve plates (material: ductile iron) are linked by spring hinges, and the thickness is 1/10~1/12 of the diameter, it was first feature, Double Spring Auxiliary Disc.

The cast iron body (ASTM A48 Class 35B) is 40% lighter and 60% shorter in length than flanged check valves, making it suitable for installation in confined spaces.And The clamping interface complies with EN 1092-2 and supports pressure classes PN10-PN16.So we can conclude it as Compact Body.

The final one is Low torque opening and closing.Optimized spring preload, disc opening pressure≤0.05 bar, closing response time≤0.5 seconds and The flow resistance coefficient (Kv value) is 0.6~1.2, which is suitable for anti-backflow and low head system at the outlet of the pump..

Performance Advantages and Applicability

1. Balance between economy and durability:

The cost of cast iron material is 1/3 of that ofstainless-steel valves, and it can withstand weakly corrosive liquids (such as cooling water and domestic sewage) of pH 6~9 through coating protection;

The design life is≥10 years, and maintenance requires only regular cleaning of the valve plate.

2. Low risk of water hammer:

The double valve plate inCast iron Wafer Dual PlateCheck Valve is closed in stages to reduce the pipeline impact caused by the sudden change in flow rate, and the peak value of the measured water hammer pressure is reduced by 50%~70%;

3. Broad Compatibility:

Applicable temperature range -20°C~120°C, support water, oil and low-concentration chemicals (such as ethylene glycol solution);

Can be installed vertically or horizontally for cast iron, PVC or carbon steel pipes (gasket required).