Selection of control valves
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A flow control valve is required for medium-pressure steam at a temperature of 425 degrees℃； Pressure: 4.5 MPa (g) ； Flow rate: MAX: 220 t/h, NOR: 150 t/h ； The pressure difference before and after the control valve is: 0.02 MPa ； Viscosity: 0.025cp ； Pipe specification: Φ480X20. Pipe material: 20G. My calculation software isn’t very useful; I hope those who are more experienced can help me determine what type of control valve would meet the requirements. Thank you! ! ! ! ! ! !
Use a sleeve. Last edited by hwindforce on 2009-2-16 15:27 in this post.]
The pressure difference is only 0.1 kilograms; it’s more cost-effective to use a butterfly valve. However, it seems that the inlet pressure value is still missing
For valves imported from abroad, the sleeves tend to scale and get stuck, and the butterfly valves cannot be closed properly.
The inlet pressure is 4.5 MPa(g), the outlet pressure is 4.48 MPa(g), and the requirements for leakage level are not high.
Small-diameter ones are fine, but can that company manufacture large-diameter control valves?
Disc valves are used for large pipe diameters, while sleeve valves are used for smaller ones. When the medium is steam, scaling is generally not an issue; it is recommended that the user opt for a disc valve