Pneumatic isolation valve for steam pipelines
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The pressure in the steam pipeline is 13-14 bar; for a pneumatic shut-off valve, which is better: a ball valve or a globe valve? Please recommend brands
I don’t know; the SDV valves I’ve come across on offshore platforms are mostly ball valves.
Ball valves are good; we have both ball valves and globe valves. Brand JC
The steam pressure is 13–14 bar; it’s supersaturated steam, and the temperature is likely around 200 degrees as well. It would be better to use a ball valve with a metal hard seal
{:3_63:} We have been using globe valves, as ball valves have relatively poor heat resistance. Of course, there are also high-temperature ball valves.
Considering steam, a parallel double-disc gate valve with a metal hard seal resistant to high temperatures can be considered. Check if there are any requirements regarding the installation space.
I also want to use a hard-sealed version, but considering the price, it’s much higher than that of globe valves; I’m not sure how to choose
I’m worried that the soft-seal ball valves will have a short service life and be difficult to use