Smooth action, without impact
Small volume and light weight
Easy regulation and maintenance
Excellent and reliable sealing performance
Separately controllable opening and closing speed
Built-in strainer, to prevent the guide piping system from being blocked
NC300 silencing non-slam check valve is a hydraulically controlled diaphragm control valve with controllable opening and closing speed. When inlet pressure rises and exceeds the valve opening pressure, the valve will open gradually to avoid impact. When the back pressure is generated, the fluid will enter the air chamber of the valve, and the valve will close gradually to form a tight seal. The opening and closing speed can be adjusted by the opening angle of the guide piping needle valve.
The valve is particularly suitable for use in the situations where absolute sealing is required. Its rubber seal ring can ensure that the valve is of no leakage. In addition, the simple design of the valve can also ensure its reliability.
Body/Bonnet: Ductile Iron/Stainless Steel
Disc & Stem: Stainless Steel
Piping: Bronze/Stainless Steel/Rubber Hose
Diaphragm: EPDM
Fasteners and Springs: Stainless Steel
175PSI/235PSI
10Bar/16Bar
ANSI / BSEN / ISO / DIN
0°C~100°C normal temperature water
Valve figure number/size/pressure grade/connecting end type/pressure regulating range/other optional accessories
Note: In valve installation, it is strongly suggested that sufficient space should be left for easy maintenance in the future. A strainer shall be mounted in front of the valve to prevent foreign matters from blocking the valve.
① Strainer (Built-In)
② Ball Valve
③ Check Valve
④ Needle Type Regulating Valve
⑤ Ball Valve
⑥ Check Valve
⑦ Needle Type Regulating Valve
In occasions where a deep well pump is required in design, the non-slam check valve should be installed. When the pump is shut down or sudden powered off, the non-slam check valve will close slowly to avoid the damaging water hammer caused by rapid back flow of fluid.
Install NC300 non-slam check valve at the outlet of booster pump can prevent fluid from entering the water storage tank when the pump is shut down. The pressure relief valve shown in the diagram can effectively prevent the impact occurring during pump shutdown.
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