swing check valve Manufacturers china tells: the selection standard of check valve
Do you know the selection criteria of check valves? Follow the editor of swing check valve Manufacturers china to have a simple look!
1. In order to prevent the medium from flowing back, check valves should be installed on the equipment, devices and pipelines;
2. Check valves are generally suitable for clean media, not for media containing solid particles and high viscosity;
3. Generally, horizontal lift check valves should be used on horizontal pipes with a nominal diameter of 50mm;
4. The straight-through lift check valve can only be installed in horizontal pipelines;
5. For the inlet pipeline of the water pump, a bottom valve should be used. The bottom valve is generally only installed on the vertical pipeline at the inlet of the pump, and the medium flows from bottom to top;
6. Compared with the swing type, the lifting type has better sealing performance and greater fluid resistance. The horizontal type should be installed on the horizontal pipeline, and the vertical type on the vertical pipeline;
7. The installation position of the swing check valve is not restricted. It can be installed on a horizontal, vertical or inclined pipeline. If installed on a vertical pipeline, the flow direction of the medium should be from bottom to top;
8. The swing check valve should not be made into a small-diameter valve, it can be made into a very high working pressure, the nominal pressure can reach 42MPa, and the nominal diameter can also be large, the maximum can reach more than 2000mm.
To sum up, the editor of swing check valve Manufacturers china tells: a brief introduction to the relevant knowledge about the selection standard of check valve.