Product Introduction
Check valve is Automatic valves operate based on the force of the medium itself,which can be used for Prevent back flow of the medium of low-pressure pipeline medium.
Check valves can be used to unidirectional flow of various types of fluids such as air, water, steam media. It mainly plays the role of cutting and prevent back flow on the pipeline. It is widely used in many fields such as water treatment, petroleum, chemical industry, metallurgy, hydro power, etc.
Lift check valves have a low-inlet, high-outlet structure. The medium enters from the low port, and its own pressure pushes open the valve seat sealing surface, flowing out from the high port. When the equipment stops, the medium flows back from the high port, causing the valve seat sealing surface (affected by gravity) to fall back, achieving a seal and preventing back flow.The closing element, the valve disc, moves up and down along the valve body cavity to open and close the valve. The valve disc’s closing stroke is only 1/3 of the nominal diameter, resulting in faster closing.
Specifications
| DN | DN50-DN800 |
| Temperature range | -20℃-120℃ |
| Installation direction | unidirectional |
| Face to face | GB/T12221, ASME B16.10, JIS B2002, DIN3202, |
| Top connection | / |
| Body material | GG25/GGG40/WCB/SS304/SS316/SS304L/SS316L |
| Stem material | #45,SS420, SS304, SS316 |
| PN | PN10, PN16, JIS5K, JIS10K, 150LB |
| Connection | Wafer |
| Design | GB/T12238, API609, JIS B2064, DIN 3354, BS 5155 |
| Flange drilling | Class150/PN10/16/10K |
| Inspection | API598 |
| Disc material | GG25/GGG40/WCB/SS30/SS316/SS304L/SS316L |
| Sealing material | EPDM, NBR, PTFE, VITON, SILICONE,Cr13,SS304,SS316, |
