Check Valve

A check valve is a valve whose opening and closing parts are circular discs and which rely on their own weight and medium pressure to produce an action to block the backflow of the medium. It belongs to the category of automatic valves, also known as non-return valves, one-way valves, reflux valves or isolation valves. It is mainly used in pipelines where the medium flows in one direction, and only allows the medium to flow in one direction to prevent the backflow of the medium.

The assembly, commissioning and testing of the valves are strictly controlled during assembly and commissioning, and strive for excellence to ensure the successful assembly and commissioning of the valves, and various performance tests are carried out, and all indicators meet the requirements. A quality plan is prepared for the valve process inspection to ensure that the valve is quality controlled from raw materials, blanks, machining, factory tests and various tests. The function of this type of valve is to allow the medium to flow in one direction only and prevent it from flowing in the opposite direction. Usually this type of valve works automatically. Under the pressure of the fluid flowing in one direction, the disc opens; when the fluid flows in the opposite direction, the fluid pressure and the self-reclosing disc of the disc act on the valve seat, thereby cutting off the flow.

Check valves are suitable for water supply systems, chemical industry, metallurgy and other industrial sectors, and are also suitable for domestic water pipe networks, but are not suitable for sewage with a lot of sediment.

Performance Characteristics

1. Short structure length, small size and light weight.
2. The valve disc closes quickly and the water hammer pressure is small.
3. It can be used in horizontal or vertical pipelines and is easy to install.
4. The flow channel is unobstructed, the fluid resistance is small, the action is sensitive, and the sealing performance is good.
5. The valve disc has a short stroke and the valve closing impact force is small.
6. The overall structure is simple and compact, the shape is beautiful, the service life is long, and the reliability is high.

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