| 摘要 |
FIELD: machine building.SUBSTANCE: bidirectional self-balancing shutdown pressure valve contains valve body, valve disk, pressure ring, bonnet, valve rod and balancing hole, in which the valve disk is located in the valve body chamber. The pressure ring is secured by thread in the top part of the valve body chamber. The bonnet is rigidly connected with the valve body. The valve rod passes through the bonnet, and bottom end of the valve rod is movably connected with the valve disk. The external surface of the disk, pressure ring and valve body create a ring cone groove, inside which the combined O-ring is located, it has high heat resistance and corrosion strength. The combined O-ring contains top washer, top O-ring, top gasket ring, retaining ring, bottom gasket ring, bottom O-ring and bottom washer.EFFECT: improved design.10 cl, 4 dwg, 2 tbl |
