Cock is with hole plug body as the opening and closing, perpendicular to the axis of rotation of the channel, by rotating channel opening and closing of the valve. Plug with the valve rod rotation, in order to realize the switch action. Plug valve plug body for cone ( There are also the cylinder) , cooperate with the taper hole surface of the body composition of seal. Cock channel has a variety of forms. Common straight-through type is mainly used for cutting fluid. Three and four general formula plug valve is suitable for the fluid reversing. The Industrial Valves body material: cast iron, cast steel, stainless steel, chrome molybdenum steel, brass, sealing surface material: W, F, T. Job stress: 0. 6 ~ 10 mpa, working temperature: - 20℃～350℃。 The valve diameter: DN15 ~ 12. Connection: flange, welding, card sets. Drive mode: manual, worm gear drive. Applicable medium: oil, gas, water, gas, acid, etc. Manufacturing standards: gb plug valves, plug valves, plug valves jis standard. Plug valves can be divided into the form of the structure pattern plug valves, sealing plug valves, filler plug valve and oil plug valve. Points, the form of the channel can be divided into straight-through, three general formula, and the four general formula 3 kinds. Plug valve installation and maintenance should be paid attention to the following: 1, the cock should have the position of the valve handle rotating 2 and plug valves cannot be used for throttling. 3, belt drive mechanism of ball valve should be installed upright.
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