Leakage issue with steam stop valves
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The valve core of steam stop valves tends to leak steam; what are some good quality steam valves available in China?
This post was last edited by shiwendong on 2016-12-27 09:34. Medium: steam; recommended choice: piston valve. For the latter, a globe valve with a tapered plug is preferred (flat seals tend to accumulate debris)
We used high-temperature ball valves at the beginning, and they seemed okay. The key is that the quality must be good, really good
It’s mainly a problem with the alloy surfacing layer on the sealing surface
The internal leakage sealing of globe valves is better than that of stop valves, and they are also easier to manufacture. The packing of the ball valve stem wears out more slowly compared to that of a gate valve; it rotates by 90 degrees without any linear movement, which makes external leakage less likely. As for internal leakage, it is more difficult to apply a spherical alloy coating as well as to carry out subsequent processing.
The Y-type stop valves produced by Suzhou Delan Valves are of good quality.
No more advertising – anyway, our 1PMA steam system performs well with high-temperature valves.
Put more effort into choosing the sealing surface; using cemented carbide would be better, but the price might be slightly higher
Select valves from some well-known domestic manufacturers to ensure better quality. However, after using it for some time, there was a slight internal leakage, which is a common problem with domestic products: L
We use a domestic brand produced in Suzhou; it’s quite good
Which valve company in Suzhou is it?