高性能直通切斷球閥 High-performance full bore shutoff ball valve
This series of metal sealed ball valve is suitable for high temperature, high pressure and other occasions, and can achieve zero leakage of the valve seat. HVOF equipment is used to spray the surface of the ball and valve seat with extremely hard tungsten carbide or chromium carbide alloy, which has the characteristics of high erosion resistance, high wear resistance and long service life. Using Dongchen's unique grinding technology, The seat and ball valve are completely sealed. Due to the action of the spring, the valve seat is always in contact with the ball surface, and the self-cleaning function is used to prevent foreign matter from entering the sealing surface. Although this series of ball valve has a simple structure, it is most suitable for the harsh conditions such as slurry and dust. The packing part adopts the structure of dynamic load, which can effectively prevent the leakage of the packing.
The special packing structure can meet the leakage level below 100ppm, while reducing the friction of the valve stem by about 20%.
The valve stem anti-flyout structure can ensure that the valve stem
does not fly out and cause accidental injury.
The valve seat adopts wave spring or cylindrical spring and double
scraper structure, which can clean the spherical surface and ensure the seal.
The double seal structure can ensure that the medium does not contact
the spring and ensure the valve is sealed.
Soft-sealed valve seat sealing performance is more stable and reliable.
The blowdown structure is designed to clean the valve and prevent
the valve from being stuck.
It meets the requirements of API607 standard and has the functions
of fire prevention and antistatic.
閥門的結構特點 structural features