Questions regarding the types of soft sealing materials used on the valve spools of sleeve valves and their operating environments?
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Our factory has many of these balanced sleeve control valves, and all of them are equipped with soft seals on the upper part of the valve core. I’ve seen that in most cases these are carbon rings, which are pre-shaped and fitted onto that area. What I would like to ask is what materials are currently used for such soft-sealing rings. It would be best if the properties of these materials could be explained in terms of factors such as pressure and temperature. Thank you all in advance! ! ! ! ! ! ! !
Why isn’t anyone answering? ? ? Is it because it’s Friday today? ?
That won’t work, right? The sealing ring needs to be in constant contact and in friction with the sleeve; can’t a softer material like a graphite ring be used?
I’m a complete beginner when it comes to valves; I know that the materials used for soft seal rings include carbon rings, PTFE, and I’ve also seen one made of PEK The main goal is to gain a systematic understanding, to facilitate future maintenance. Also, does this type of soft seal ring have particularly poor sealing performance?