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The valve is installed in pipeline system as medium against-flow protecting equipment. It can be used to prevent increment of pressure (water hammer) due to closed by adverse flow.
The valve disc rely on the force of medium flow to open the valve, it belongs to automatic valve. It is mainly used for the single way flow of media, allowing the media to flow in one direction to prevent accidents. There are multi-discs on the diaphragm and these disc will not drop at the same time when closing in the feature water hammer pressure in some degree, in this way it can protect the entire system.
Suitable medium: Water, sea water, steam, etc.
Type of sealing : soft sealing and hard sealing.
Type of control : automatic.
Material: grey cast iron, ductile cast iron, alloy cast iron, carbon steel, stainless steel, alloy steel.
Standard: GB, BS, ASME, JIS, DIN, EN, ISO and other country, also can be produced according to user’s requirements.