Supply of hydraulic control valve slow closing price of imported bellows globe valves - [stop valve, Globe Valve] opening and closing parts are plug-shaped valve, leaving it flat or cone seal J941H-16, the valve along the center line of the fluid linear motion. Stem form of exercise with lifting rod (stem down, the hand wheel does not lift), but also lift rotating rod (hand wheel and stem rotation movements, nut located in the body). Valve is only suitable for fully open and fully closed, not allowed to be adjusted and the throttle. Cut-off valve is mandatory sealed valve, so when the valve is closed J941H-320, must exert pressure on the valve to force the sealing surface does not leak. When the medium enters the valve from the underside of the disc, the operating force needed to overcome the resistance, the frictional force by the thrust generated by the pressure medium and the valve stem packing, close the valve opening force larger than the force of the valve, so that the stem The diameter should be large, otherwise the stem benders failures occur. In recent years, from the self-sealing valve with J41Y-16I, the cut-off valve would change the flow of media into the valve chamber from above the valve, then at medium pressure, force small off valve, and the valve opening force, stem diameter can be reduced accordingly. Meanwhile, in the role of the media, this form of valve is also relatively tight. China's valve "three to" has been provided, closing the flow valve, should be top-down. Closing the valve opening, the valve opening height J41T-150LB, nominal 25% to 30% of the diameter, the flow has reached the maximum, that valve has reached the fully open position. So off fully open position of the valve, the valve stroke should be determined. Valve material: cast steel, carbon steel, stainless steel, 304, 316 and so on. Valve Specification: DN15-DN1200. Pressure: 1.0-32Mpa drive can be manual, electric, pneumatic, gear and other devices. Supply of hydraulic control valve slow closing price ★ Shanghai tree Code