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Globe valves are used generally, because of the comparatively small roughness between the sealing surface when open or closed. Also globe valves are durable, open height is small, manufacturing is easy and convenient maintenance, etc. It can be used not only in the low pressure but also high pressure. Globe valve closed depend on stem pressure, make the disc sealing surfaces and seat sealing surface tightly. To stop the flow of media, Globe Valves only allowed a one-way medium flowing direction, so globe valves are installed directional. |
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Globe Valves
Globe valve is a straight motion valve and is basically designed to stop, start and regulate flow. The disk of a Globe valve can be completely diminished from the flow path or it can completely close the flow path. Conventional Globe Valves may be used for isolation and choking services. Although these globe valves exhibit slightly higher pressure drops than straight valves but they may be used where the pressure drop through the valve is not a controlling factor at smitvalves.com
Globe valves are extensively engaged to control flow. The range of flow control, pressure drop, and duty must be considered in the design of the globe valve to avert premature failure and to assure satisfactory service. Globe Valves that are required for high-differential pressure-throttling service, require especially designed valve trim. Globe valves are used generally, for small roughness between the sealing surfaces when open or closed. Also, Globe Valves are durable, have small open height. Globe Valvesis easy and convenient to manufacture as well as maintain. Globe Valvescan be used not only in low, but even high pressures. The closed Globe valve depends on stem pressure. It makes the disc sealing and seat sealing surfaces tight. To stop the flow of media, a globe valveallows only one-way medium flowing direction. However, the globe valves are directionally installed.
A globe valve is used for throttling flow control. Shut off is accompanied by the movement of the disc against the flow stream, rather than across. It is also the case of a gate valve. The flow style in a Globe Valve involves changes in direction, resulting in greater resistance to flow, and causing high pressure drop. A globe valve is an excellent valve to use for on-off service, but is absolutely suited for constant cycling and control of fluids anywhere in amount or volume between the open and closed locations. The globe valve must be established in proper relation to the media flow as indicated by the flow direction arrow marked on the valve body. The globe valve is considered uni-directional and must be installed with the pressure side or inlet under the seat. |
