Lift and swing check valves are automatically opened and closed by the force generated by the flow of the pipeline medium itself, belonging to an automatic valve. Check valve is used in pipeline system, and its main function is to prevent medium backflow and reverse rotation of pump and its driving motor. And the discharge of medium in the container. It is applicable to water, oil and steam media in various fields.
The material selection is exquisite, in line with relevant domestic and foreign standards, and the overall quality of the material is high.
The matching of sealing pairs is reasonable. The sealing surface of valve disc and valve seat is made of iron-based alloy or Stellite cobalt based cemented carbide, with good wear resistance, high temperature resistance, corrosion resistance, scratch resistance and long service life.
Various piping flange standards and flange sealing types can be adopted to meet various engineering needs and user requirements.
The valve body materials are complete, and the gaskets can be reasonably selected according to the actual working conditions or user requirements. It can be applied to various pressure, temperature and medium conditions.
Design standard：GB 12235
Structure length：GB 12221 JB7745
Connecting flange：JB 79
Test inspection：GB/T 13927 JB/T 9092