Power Plant Gate Valve
In response to the large demand for power plant valves in countries using ANSI/ASME standards,Chongqing Jeri Marine Group has further developed and completed its range of power plant gate valve, globe valves and check valves.
Chongqing Jeri Marine Equipment valves now cover all pressure classes up to ANSI Class 4500. Their nominal diameters range from ½ to 32 inch. Operating temperatures, depending on the material, can be as high as 650 °C/1,200 °F. The power plant gate valve maximum permissible pressure equals 600 bar or 8,700 psi.
By looking at the bigger picture, The power plant gate valve seem to be just a fraction of the vastness of a power station. Small as these may be, their role is pivotal to the power plant. In fact, there are many valves in a single power plant. Each of these takes different roles.
While the design principle behind most valves has not changed, the valve materials and manufacturing techniques have greatly improved. With this in mind, valves now can operate more sophistically and efficiently.
The main gate valves applied in the power industry include high pressure flexible wedge gate valves, parallel double gate valves and expanding gate valves etc. The design standard is ASME B16.34 and the body material is usually high temperature alloy steel. The valves are designed to be exposed to supercritical conditions such as high temperatures and high pressures.
Size:2"~30"(DN50~DN750)
Pressure Rating: ASME CLASS 900~4500(PN150~PN760)
Body material: Carbon steel, Stainless steel, Alloy steel
End connection: BW
Operation: Handwheel, Gearbox, Pneumatic, Hydraulic, Electric
Valves Typically Used in Power Plant Applications
Bolted Bonnet and Pressure Seal Gate Valves
Power Plant Gate Valve have a disc or wedge that acts as a gate that blocks the flow path of media. Not intended for throttling, the main role of gate valves is for isolation of media with less restriction. To fully utilize the gate valve, only use it as fully opened or fully closed.
Power Plant Gate Valve, together with the globe valves, belong to the isolation valve category. These valves can stop the flow of media in emergencies or when the pipeline needs maintenance. These can also connect the media to external process equipment or it can direct which path media should follow.
The bolted bonnet valve minimizes erosion, friction and pressure drop. This is due to its straight-through port design. For the pressure seal gate valves, two designs are available for high-pressure and temperature applications: the parallel disc and flexible wedge.
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