Break Valve

Globe valve stop valve, mandatory sealing valve, so when the valve is closed, you have to put pressure on the disc, to force the sealing surface from leakage. When media by entering below the disc valve, operating force required to overcome the resistance, is the valve stem packing friction with the thrust generated by media pressure, close the valve more than open the valve, so the diameter of the stem or stem bending failure occurs. According to the connection method is divided into three types: flange connection, connection, welded connections. From the closed valve after the valve media flow from over the disc of the valve Chamber, under media pressure, close the valve force, and open the valve force, stem diameters can be reduced. Meanwhile, in the presence of media, this type of valve is also more closely. China valve "three" provisions, valve flow from top to bottom. Valve is open, the valve opening height, when nominal diameter 25%~30%. flow has reached the maximum, valve to full open position. So the valve to full open position should be decided by the disc trip.

Globe (stop valve,Globe Valve) discs are disc shaped, sealed top is plane or cone of the sea, along the centerline of the seat disc for linear motion. Stem forms (common name: dark bar), there is lift rotary-rod can be used to control air, water, steam, corrosive media, mud, oil, liquid metals and radioactive medium, such as various types of fluid flow. Therefore, the deadline for closure of this type of valve is very suitable to be cut off or adjusting the throttle. Due to open or close the valve stem stroke is relatively short, but very reliable cutting function, and port of the valve seat travel proportional relationship with the disc, very suitable for regulation of the flow.