On the selection of control valves for steam heating equipment.
Thread Content
Steam heating extraction tank. The two heating jacket inlets of the tank are provided with DN50 pipes. The DN50 valve for steam supply is divided into two jackets. Currently, the steam pressure in each of the two jackets is controlled by a DN50 stop valve. I would like to ask. Can DN32 valves be used to control the steam pressure for these two jackets? If it doesn’t work, which aspect is affected? Are there any other types of valves that are better suitable for regulating steam flow?
Is there anyone who can give an answer? Without me, I’ll keep asking in a couple of days.
The last edit to this post was made by Wat Energy Saving on 2019-10-19 at 10:25; reducing the diameter of the control valve helps improve the response speed, so DN32 is suitable； If a dedicated control valve is used, it is generally a few sizes smaller than those used for steam pipes. The stability of the steam pressure depends on changes in the load on the heating tank; if the load remains stable, it is also possible to use manual valves for pressure reduction (pressure reduction itself represents a form of throttling through adiabatic expansion) ； If the load changes, a watt-type pilot-operated steam pressure reducing valve should be used to adjust the valve opening in accordance with the changes in the downstream steam demand.