。好的阀门

Parallel gate valve and gate valve. The role of this type of valve is the only allowed media to flow in one direction, and stop the flow direction. Usually the valve is automatically work in a direction of flow of fluid pressure, the valve flap to open; fluid flow the opposite direction, by the fluid pressure and the valve flap from the coincidence of disc acting on the valve seat to cut off flow. ... Manual gate valve, electric valve Z941, pneumatic valve Z641, is geared valve Z442, Z441, bevel gear gate valve Z542, Z541. Insulation valve BZ41H. 2 flow valve LXLZ971/3H. High-temperature slagging valve. Fluorine valve Z41F. High temperature and pressure valve Z41Y, Z61Y, high temperature valve Z41Y, Z61Y, high-pressure valve Z41H, Z61H, welded gate valve, high temperature and high pressure welded gate Z61, a self-sealing valve Z61Y. Resilient seated gate valves, fire signal gate, buried-type resilient seated gate valves RVCX, RVHX, RRHX, RVEX, RRHN, RVHS. Knife-shaped gate PZ73H. Internal thread valve Z11W. Flange Gate Valve Z41H. Differential oil seal wedge of gate valves CYZD40H. Automatic leveling valve seal KPTYZ42H. Bellows valve WZ41H. Vacuum isolation valve NKZ44H, NKZ41H, NKZ61H, NKZ64H, water seal valve DSZ64H, DSZ44H. Shorting lead shower valve Z41W/Z61H. Sewage valve PZ48H/PZ44Y.