Flange check valve refers to a valve that automatically opens and closes the valve disc based on the flow of the medium itself, used to prevent medium backflow. It is also known as a check valve, one-way valve, backflow valve, and backpressure valve. A check valve is an automatic valve that primarily functions to prevent media backflow, prevent pump and drive motor reversal, and discharge container media. Check valves can also be used to supply pipelines to auxiliary systems where the pressure may rise above the system pressure. Check valves can be mainly divided into swing check valves (rotating according to the center of gravity) and lift check valves (moving along the axis).

Structural features of flange check valves:

1. The selection of materials is meticulous, meeting relevant domestic and international standards, and the overall quality of the materials is high.

2. The sealing pair is advanced and reasonable, and the sealing surfaces of the valve disc and valve seat are made of iron based alloy or Stellite cobalt based hard alloy surfacing. It has good wear resistance, high temperature resistance, corrosion resistance, scratch resistance, and long service life.

3. The product is designed and manufactured according to the GB standard GB/T12235.

4. Various piping flange standards and flange sealing types can be used to meet various engineering needs and user requirements.

5. The valve body material variety is complete, and the gasket can be reasonably selected according to actual working conditions or user requirements, which can be suitable for various pressure, temperature, and medium working conditions. We can design and manufacture check valves with different structural and connection forms according to user requirements, for use with various equipment.