Non Slam Disc Check Valve
Resistant
Sealing
Operation
Long Life
Non Slam Disc Check Valve is an automatic non-return valve designed to prevent reverse flow and eliminate water hammer in industrial piping systems. Its spring-assisted disc closes instantly before flow reversal occurs, ensuring silent operation, reliable sealing, and extended equipment life. It is widely used in water treatment, HVAC, power plants, oil & gas, chemical processing, fire protection, and industrial pumping systems.
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Frequently Ask Questions
A Non Slam Disc Check Valve is an automatic check valve designed to prevent reverse flow while closing rapidly enough to minimize pressure surges and water hammer.
During forward flow, fluid pressure pushes the disc away from its seat. As flow velocity decreases, the spring pushes the disc toward the closed position before significant reverse flow develops.
These valves are widely used in water treatment plants, wastewater systems, HVAC, chemical processing, oil & gas, power plants, fire protection systems, and industrial pumping applications.
It is called non-slam because the valve is designed for controlled, rapid closure that helps prevent the disc from violently slamming against the seat.
A Non Slam Disc Check Valve uses a spring-loaded disc for instant closing, while a Swing Check Valve uses a hinged disc that may close more slowly, increasing the risk of water hammer.
Selection should be based on pipe size, pressure rating, operating temperature, flow rate, installation position, body material, and process media to ensure optimum performance.
