Fully lined PPL valve
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Dear sea friends, our materials need to withstand temperatures of 250°C and also be corrosion-resistant. It is said that valves with PPL lining can meet these requirements, but it seems there are not many manufacturers in China that produce such valves. I was wondering if anyone knows of manufacturers that can create such valves?
This post was last edited by Desert Fish on 2020-10-13 at 19:27. Counterflow polystyrene valves are extremely expensive; currently, high-temperature resistant soft-sealed ball valves are generally of this type, but they are really costly! I don’t really recommend it; of course, it depends on the operating conditions.
In the PPL industry, this material is sometimes referred to as fake material; most of what is available for purchase is counterfeit. It is said that the manufacturers have stopped production for several years, yet it is still widely sold on the market. Think about it for yourself
For corrosion resistance, fluorinated lining is recommended; however, even valves with an entirely PFA lining can only withstand temperatures up to 180 degrees, which is not enough to reach 250 degrees. It’s worth considering hard-sealed stainless steel valves to see if they can handle such conditions
So far, no PPL-lined valves have been found. For lined valves, the lining material is not only chosen for its corrosion resistance; factors such as the method of forming the lining material, its thermal stability, and viscosity also play a role. PPL is not suitable as a lining material.
:Lol, I’m the manufacturer. What specific medium is it? 250°C is a critical threshold; it’s recommended to use a hard seal
At such a high temperature of 250°C, corrosion protection is necessary; if stainless steel cannot be used, then ceramic valves should be employed
At such a high temperature of 250°C, corrosion protection is necessary; if stainless steel cannot be used, then ceramic valves should be employed