Questions about valve selection.
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Why are bypass valves for control valves and safety valves both made of globe valves rather than gate valves? What are the considerations behind this? Why are some of the thicker vertical downward pipes equipped with stop valves instead of gate valves? Please, the masters, share your thoughts
The sealing reliability of globe valves is better than that of gate valves, although their flow coefficient is slightly lower than that of gate valves.
Firstly, globe valves are more suitable for regulation, owing to their characteristic valve resistance and the relatively high pressures they can handle. The greatest advantage of gate valves is their low flow resistance and suitable operation at low pressures; however, due to their structure, they are not suitable for use in regulation purposes. The structure and applicable characteristics of Baidu Yihaha valves.
You mean that gate valves are not suitable for regulation. A stop valve is also used in the safety valve bypass line. I have a general idea of how it works, but it seems like there’s a question regarding this topic; I can only score 80 points on it, as I haven’t been able to understand the remaining aspects
The control valve is used to regulate flow, and the bypass is provided so that in the event of a failure of the control valve, production can continue without interruption by switching to the bypass to regulate the flow. And the manual valve that regulates flow is the globe valve ； Gate valves are generally fully open or fully closed, serving to cut off flow.
Why is a stop valve also used for the safety valve bypass line?……