Description
API cast steel dual plate wafer check valve is a valve that opens and closes automatically depending on force from media flowing. It is used to prevent backflow and leakage of medium, and reversal of pump and driving motor. This cast steel check valve can also be installed in auxiliary pipeline system to balance system pressure. It allows medium to flow through it in only one direction, and prevents reverse direction flow. Disc will open under the pressure of forward flow fluid. When fluid flows in reverse direction, the disc will be closed by fluid pressure and dead weight so as to cut off the flow.
Application
API cast steel dual plate wafer check valve can be widely applied in tap water, sewage, construction, petroleum, chemical, food, medicine, textile, electric power, shipbuilding, metallurgy, and other pipeline systems.
Features
1. Closing speed of disc is fast and pressure of water hammer is small.
2. Flow channel is unobstructed and fluid resistance is small.
3. Small friction between sealing surfaces ensures low wear rate of check valve.
4. CNC processing technology is adopted to produce disc.
5. API cast steel dual plate wafer check valve can be installed easily both on vertical and horizontal pipelines
6. The disc sealing surface can be customized. Customer can choose sealing material according to media in order to increase sealing property and wear resistance according to requirement.
7. This cast steel check valve has virtues of reliable sealing, sensitive motion, compact structure, beautiful shape, long service life and high reliability.
Malfunction, Reason and Solution
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Malfunction
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Disc Breakage
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Medium Backflow
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Reason
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The disc beat the valve seat frequently. Some disc valves that are made of brittle materials (such as cast iron, brass, etc.) will be easily broken.
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1. Sealing surface is damaged. 2. Impurities are sandwiched between sealing surfaces.
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Solution
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Applying ductile materials to manufacturer valve disc
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Repairing the sealing surface or cleaning impurities
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Lanteky Valve Industry is a professional manufacturer and supplier of cast steel check valves in China. Our main products cover ball valves, gate valves, globe valves, check valves and strainers. All of our products have reached the standard of US API, Germany DIN, Russia GOST, Japan JIS, ISO9001 and CE. Our API cast steel dual plate wafer check valves are widely applied in tap water, sewage, construction, petroleum, chemical, food, medicine, textile, electric power, shipbuilding, metallurgy, and energy systems.
