FREE-VALVE’s line silent check valve refers to the valve disc slide along the center line of the valve body and automatically open and close the valve disc relying on the flow of the medium , used to prevent media from flowing backwards, also known as the reverse check valve, one-way valve, silent check countercurrent valve.
Short structure design, the stroke of valve disc is short when opening and closing ,which can effectively prevent water hammer.
The valve has non-metallic lubricating sleeve between stem and guide frame, flexible lifting of valve plate.
The valve can be turned into foot valve by proper modification.
The sealing surface of the valve disc is made of rubber and fixed on the valve disc with screws and easy maintenance and replacement.
Spring is installed on the back of the disc, so that the valve can be better sealed when the medium flows backward.
1. Size Range: NPS2~NPS20,DN50~DN500
2. Applicable Temperature: 0~80℃
3. Connection Type: Flange
4. Sealing material: rubber
5. Body material：WCB,stainless steel
6. Test standard：GB/T13927,API598
FREE-VALVE’s line silent check valves are widely used in water supply and drainage systems, high-rise building pipe network, can be installed at the pump outlet port.Its main function is to prevent the reverse flow of the medium, to prevent the reversal of the pump and drive motor, as well as the discharge of the container.