Seeking advice on the selection of material for the valve sleeve of a plug valve! !
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The operating temperature is around 190°, and the operating pressure is 9.0 MPa. A plug valve is to be used; what material should be chosen for the valve sleeve? I would appreciate it if experts could share their insights!! (It would be great to have information on relevant materials.) Thank you in advance! !
As a supplementary point, its medium is urine
Luoyang Sanxuan Special Valve Co., Ltd. provides free technical consultation at 18037565993
The valve sleeve of a plug valve is generally made of PTFE with a small amount of graphite added! ! There are not many companies in the country that can repair such valves! ! In the past, welded ball valves were commonly used for urea applications; it is recommended to switch to stainless steel steam jacketed valves, as their quality can be guaranteed! ! Domestic! !
We have tried using PTFE combined with graphite fibers and molybdenum disulfide, but the results were not very good. Additionally, the soft seal was chosen by the design team; it is likely difficult to achieve a tight seal with a hard seal under high pressure. The valve is installed at the pump outlet, which is quite important. . .
It is recommended to use a stainless steel steam jacketed globe valve, as its quality can be guaranteed! ! Domestic! !
In the end, a jacketed globe valve was used
Using nickel-based alloys for corrosion and high-temperature resistance
The poor performance is due to insufficient heat resistance