Valve material selection
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The pressure at the site is 0.1 Mpa, and the temperature is around 230°C; a butterfly valve is chosen. What type of sealing material should be used to ensure no leaks?
I’m not entirely sure, but based on your temperature reading, I think it should be a hard seal
You’re providing too little data. It is not recommended to choose butterfly valves
If a butterfly valve must be chosen, hard-sealed, double-eccentric, or triple-eccentric types can be considered
At this temperature, to achieve good sealing, a triple-eccentric hard seal is required.
It’s impossible to guarantee no leaks; even if your medium is very clean, leaks can still occur using ball valves
The pipe diameter, type of medium, as well as whether it is for regulation or shut-off should also be provided to facilitate judgment and selection.