The valve disc and valve seat sealing surface of the pneumatic control globe valve are made of iron-based alloy surfacing or Stellite cobalt-based hard alloy surfacing. The valve stem has been tempered and surface nitrided, and has good wear resistance, high temperature resistance, and corrosion resistance. Corrosion-resistant, scratch-resistant, and long service life.
The medium flow direction of the stop valve changes from the top of the valve disc to the valve cavity. Under medium pressure, the force to close the valve is small, but the force to open the valve is large, and the diameter of the valve stem can be reduced accordingly.
