Bi-directional Seal Orbit Type Plug Valve

  Bi-directional seal orbit type plug valve is a type of valve that is designed to provide high integrity, reliable, and long-lasting sealing performance. 

  Application:
The double-sealed orbit type plug valve is designed to handle various types of media, including liquids, gases, and powders. It can work under high temperature and high pressure conditions, as well as corrosive and abrasive environments. The valve is suitable for throttling, on-off, and emergency shut-off applications in pipelines and vessels. It is widely used in various industries, such as petrochemical, chemical, power, and other industries, where process control and safety are critical.

  Reason for bi-directional seal:
Firstly, bi-directional seal design ensures the reliability and integrity of the sealing performance, even under harsh working conditions. Secondly, the orbit type plug provides a self-cleaning mechanism that can remove any debris or buildup on the sealing surfaces, ensuring long-lasting sealing performance. Finally, the bi-directional seal design ensures that the valve can be installed in any orientation, which simplifies the piping layout and reduces installation costs.

  Structural Characteristics:

  1. The sealing surface of each disc has soft and hard sealing forms at the same time, to ensure zero leakage of the valve, and make the valve with fire protection function.

  2. Soft seal fixed: the soft seal is formed by molding vulcanization process, nitrile rubber first vulcanization, fluorinated rubber second vulcanization; Inlay firmly and never fall off.

  3. Leak-proof design. In addition to the O-ring seal between the valve end cover and the valve body, the chassis and the flange of the valve body, the flexible graphite gasket is also added between the contact end face to realize the double-channel seal; In addition to the flexible graphite packing, the O-ring seal is also added in the fitting part of the packing gland and the valve stem and end cover; The pressure relief part and the drain plug and the valve body part are connected by taper pipe thread design, and are sealed with copper gasket. All these measures effectively ensure the reliability of the seal and eliminate the occurrence of leakage.

  4. With pun break and release function. There is a drain plug at the bottom of the double seal plug valve. When the valve is closed, remove the plug. If one side of the disc produces internal leakage, the leaking medium is discharged through the plug hole, so as to avoid the occurrence of the mixing phenomenon of the two media.

  5. With online maintenance function: when the soft seal is damaged due to impurities or the operator (actuator) fails for some reason, the valve can be repaired or replaced without being removed from the pipeline.

  6. It has the function of testing internal leakage: whether the main seal can guarantee zero leakage can be tested by the needle valve of the ‘pressure relief system’.

  7. With central cavity pressure relief function.

  8. Unique line decompression function.

In conclusion, bi-directional seal orbit type plug valve is an essential component in various industrial applications that require high-frequency operation, reliable sealing performance, and safety. The bi-directional seal design of the valve makes it an excellent choice for process control and safety, providing reliable and effective sealing performance in both directions.