Can fluorinated-lined ball valves be used in conditions of 500 Pa?
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Dear experts, what type of valve would be most suitable for the following operating conditions? 1: A medium saturated with salt acid (concentration of around 10% or so), at room temperature ≤50°C, and under a vacuum of 500 Pascals. 2: The medium contains crystalline NaCl and NH4Cl; the temperature is around 70 degrees. Can a fluorinated ball valve be used in conditions of 500 Pascals?
It is not recommended to use fluorinated lining valves in a vacuum environment, as this will cause the lining to collapse
Fluorinated ball valves are not recommended for use in vacuum conditions, as the vacuum can have an impact on the tetrafluoroethylene lining; it is advisable to use ball valves made of special materials. It’s unclear whether crystallization occurs, and it’s uncertain whether soft-seal valves would be suitable.
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Looking at the fluorine-lined process, multiple dovetail grooves are machined inside the valve body; once lined, it can last for a long time
Fluorinated ball valves can be used in vacuum conditions. The valve body is made of ductile iron, which makes it easy to process; it features multiple dovetail grooves, and a PTFE gasket is installed at the screw to compensate for thermal expansion and contraction
For such operating conditions, a hard-sealed ball valve is the best choice. Crystallization causes wear on both the steel ball and the seat of the ball valve; if you have such needs, feel free to contact me at y721202@163.com – I can help resolve your issues