Selection of control valve diameter
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May I ask if there are any regulations specifying that the diameter of a control valve must not be larger than that of the pipeline?
As a result of selecting the control valve based on control requirements, the diameter of the control valve is often less than or equal to the diameter of the pipeline. Regardless of the purpose for adjusting a control valve, the method used is to control the flow rate of the medium passing through it; in other words, the fluid in the pipeline is \"restricted.\" Therefore, the cross-sectional area at the narrowest point must be less than or equal to the diameter of the pipeline, and the external connection diameter will also not be larger than that of the pipeline.
There are no regulatory requirements for this, but why is your control valve larger than the pipe diameter? ?
How can a control valve be larger than the pipe diameter?
All I’ve seen are smaller than the pipe diameter, and not just a little smaller.
The diameter requested by the user; later, specifications were sent for his confirmation, and they eventually made changes.
Generally, the diameter of a control valve is one size smaller than that of the pipeline, in order to achieve an optimal opening degree or CV value. It also offers good cost-performance; if the diameter of the control valve is larger than that of the pipeline, it means the pump was selected incorrectly, either the diameter of the pipe was miscalculated, the maximum flow rate was calculated wrong, or too much margin was allowed.