Globe Valves are made in accordance with API 602 and ASME B16.34 standard for low pressure application and also for throttling applications. The globe valve consists of a movable disc that connected to a stem, allow user to regulate the flow in pipeline by rotate the wheel shape handle. There is a directional marking on valve body to show the inlet and outlet for the fluids. Globe valve is available in stainless steel and forged steel material.
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Globe Valve Product Information
Globe valve is a valve that used to start, stop and regulate fluids flow along the valve passage. The disc will be lifting up or lower down vertically along the seat by rotating the wheel handle to open position or close position. It is design and manufacture according to API 602 and ASME B16.34 standard. It also inspect and test according to API 598 standard. Globe valve is applicable to system that required flow regulating such as cooling water system, fuel oil system and extraction drain system.
Material and Design:
Globe valve is available in stainless steel SS316 or forged steel A105 material. For stainless steel SS316 gate valve, it is available in 2 design namely screw-in bonnet type or bolted bonnet type. While for forged steel A105 gate valve, it only available in bolted bonnet type only. For globe valve with screw-in bonnet design, a bonnet is screw in into the valve body to hold internal parts that inside valve body, and offering a pressure tight seal between bonnet and valve body. While for globe valve with bolted bonnet design, the bonnet is come with thicker specifications and tighten to valve body with bolts and nuts. This design is normally used for high pressure application. The handle design of globe valve is in wheel shape handle design.
For the stem part, which is one of the essential part for globe valve, it is available in rising stem design and non-rising stem design. For globe valve with rising stem design, the stem will rise and exposed when we rotate the wheel handle to open position and lower when we rotate the wheel handle to close position. This design can simply tell us if the valve is in open position or close position by looking at the amount of stem exposed. However for globe valve that come with non-rising stem design, the valve is in open position when we rotate the handle to the open position as far as possible and in close position when we rotate the handle to the close position as far as possible. Although it is unable to check the valve in open or close position like rising stem design, non-rising stem design globe valve is more suitable to install on hydraulic piping system that have limited space for the stem to raise in full, for example, underground hydraulic systems.
The available size for globe valve is ranged from 1/2" to 2". For SS316 material globe valve, the working pressure is available in 200 PSI or 800 PSI. While for A105 material globe valve, the working pressure is available in 800 PSI. As globe valve mainly used to regulate the flow, the flow will result in higher pressure drop compared to gate valve.
For SS316 material globe valve, the connection end is only available in NPT (National Pipe Thread) female thread or BSPP (British Standard Pipe Parallel) female thread. While for A105 material globe valve, the connection end is available in NPT female thread or Socket Weld. For female thread globe valve, it need a male thread of same connection end to screw in to gate valve. However for socket weld connection, it only need the pipe end connection in plain end.