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sleeve type plug valve factory

Sleeve type plug valve sleeved plug valves are non-lubricated quarter-turn valves that achieve sealing through the use of a compressible sleeve as a sealing member.
A: the working temperature for our types of plug valve as follow: for sleeved type plug valve: ptfe sleeve shall not exceed 150℃, ppl sleeve shall not exceed 280℃. for inverted pressure balance lubricated plug valve, the working temperature normally is less then 80℃. but if we use special grease, the temperature can reach to 120℃.
In the sleeved plug valve a ptfe sleeve is fitted into the valve body. the metal plug rotates against the ptfe with a very low torque. ptfe is an inert materials with a low friction coefficient. it completely surrounds the plug. the sleeve provides a large sealing surface from port to port. our sleeved plug valves can be used with bi-directional flow.
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