Swing check working principle of the pneumatic valve ( Graphic)

Swing check pneumatic valve





swing check pneumatic valve structure features:

1, the canal workers of the company's swing check pneumatic valve material, comply with relevant standards.
2, seal reasonable matching, pneumatic valve, pneumatic valve seat sealing surface with iron base alloy or state department ( Stellite） Cobalt-based hard alloy welding surface, not easy to wear, high temperature resistance, good corrosion resistance, abrasion resistance, long service life.
3, regular swing check pneumatic valve product design and manufacture according to the national standard GB/T12235.
4, can use a variety of standard piping flange and flange seal type, can meet the needs of a variety of engineering and the user requirements.
5, pneumatic valve body material varieties complete, gasket can be reasonable selection according to actual working condition or the user requirements, can be applicable to a variety of pressure, temperature and medium conditions.
canal engineering company can choose different structure and connection according to the requirements of customers in the form of a check pneumatic valve, used for a variety of devices.

swing check principle of pneumatic valve:

swing check open-close principle of pneumatic valve and lift check pneumatic valve, also depend on fluid pressure and pneumatic disc self-respect to action, the difference is that the pneumatic valve opening and closing of rotary motion is the mode and not move up and down, fluid inlet direction should be in the side of the pneumatic disc rotation can impact. Swing check the closing of the pneumatic valve is a pipe size is pneumatic disc or disc, hanging in the pneumatic valve cavity in the body, the positive of fluid flow in fluid pressure under the action of pneumatic valve is opened, the pressure drop in the pneumatic disc in self-respect and countercurrent flow pressure under the action of closing.










swing check working principle of the pneumatic valve dynamic picture





swing check pneumatic valve working principle:











swing check pneumatic valve flow ( Reverse flow) Picture





due to the weight of the pneumatic valve, swing check pneumatic valve is opened, the fluid resistance is relatively large. In addition, the pneumatic disc suspended in a fluid, can make the fluid turbulence. It also shows that through swing check pneumatic valve fluid pressure drop than by other forms of check pneumatic valve pressure drop. When a sudden change flow direction, pneumatic valve will shut down in the seat, can cause a pneumatic seat a lot of wear and tear, and along the pipeline to produce water hammer, in order to overcome this problem, can be installed on the pneumatic valve damping device, and USES the metal pneumatic seat reduce pneumatic valve seat wear.










swing check pneumatic valve flow ( Positive flow) Picture







swing check pneumatic valve in full open, little fluid by, therefore the pneumatic valve through the pressure drops for smaller.


swing check pneumatic valve, also known as a one-way pneumatic valve or non-return valve, its purpose is to prevent the backflow medium pipeline. Open-close part by medium flow and power to open or closed, to prevent the backflow medium. Pneumatic valve belong to automatic pneumatic swing check valve class, mainly used for medium on the one-way flow of pipeline, only allowed to medium flows in one direction, in order to prevent accidents. Swing check pneumatic valve shall generally be installed in the pipeline.