stainless globe valve

Product Description

 Globe valve (stop valve, Globe valve) indicates that the disc is plug style, seal MianCheng plane or cone, disc along the centerline of the fluid for linear motion. Stem forms of exercise, (generic names: dark bar), also have lift revolve stem type, (generic names: rising stem) globe valve is only applicable to all in start-up and shut-down, do not allow to adjust and throttling.
Globe valves are subject to compulsory sealed type valve, so when valve is closed, must to disc to put pressure on, to have compulsory seal face not leak. When medium by disc below into the valve, operating power need to overcome resistance, is the stem and packing friction and produced by the pressure of the service medium of the thrust, close the valve open the valve force than force, so stem diameter, or there may be an stem of bending down. In recent years, since the sealing from emerges, the closing of the valve is shifted to the flow direction of medium above the disc into the body cavity and, at this point, in the medium pressure effect, shut the valve force is small, but open valve strength is great, the valve stem diameter can reduces correspondingly. At the same time, in the medium function, this form of valve is more closely. China's valve "three to" once stipulated, the closing of the valve flow, shall be by top down. This valve should be installed horizontally
Globe valve opens, the opening of the disc height, for *5% ~ *0% of nominal diameter, flow has reached the maximum, said valve has reached in full open position. So the closing of the valve in full open position, should by disc trip to decide.