Is such a pipeline design compliant?
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As shown in the diagram: one of the pipes in the system is DN40, but I noticed that its control valve is DN25. Is it correct to install a pipe of this type? Should the control valve be installed with a size of 40? Thank you; please discuss this – points will be given
There should be no problem; you can check the procurement parameters for the control valve as well as the calculation data provided by the valve supplier
No problem; there are usually diameter changes before and after the control valve, and large control valves are expensive
This requires a comprehensive consideration of parameters such as flow rate, velocity, and pressure drop; when the operational requirements are met, the size of the valve can be reduced to save costs.
You need to check the calculation sheet provided by the manufacturer, dear
The control valve has a reduced diameter, which decreases the pressure difference across the valve and thus reduces energy loss
As long as it’s enough to cover the volume, that’s totally fine.
During design, parameters such as flow rate, velocity, and pressure drop are calculated; if a smaller diameter meets the requirements, the diameter is reduced, and it is normal for control valves to have their diameter reduced
There is no issue with the design; the control valve should generally be less than or equal to the nominal diameter of the pipeline it is connected to. The selection of its diameter, type, etc. requires comprehensive consideration based on process medium parameters such as temperature, pressure, and flow rate.
There is no issue with the design; the control valve should generally be less than or equal to the nominal diameter of the pipeline it is connected to. The selection of its diameter, type, etc. requires comprehensive consideration based on process medium parameters such as temperature, pressure, and flow rate. Agree with this view