Apr 11, 2018
Globe Valve is a forced-seal valve, so when the valve is closed, pressure must be applied to the valve to force the sealing surface not to leak. When the medium enters the valve from below the valve flap, the resistance to be overcome by the operating force is the friction force of the stem and the packing and the thrust generated by the pressure of the medium. The force of closing the valve is greater than the force of opening the valve, so the valve stem The diameter should be large, otherwise there will be stem bending failure. According to the connection is divided into three types: flange connection, screw connection, welding connection.
The GV100 Series PA Actuator Globe Control Valve's opening and closing element is a plug-shaped valve flap, the plane above the seal or sea cone, the valve flap along the centerline of the valve seat for linear movement. The movement of the valve stem can also be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil products, liquid metals, and radioactive media. Therefore, this type of shut-off shut-off valve is very suitable for cutting or regulating and throttling.
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