Let’s all discuss how to choose the valve material for hydrogen fluoride as a medium
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There is a client whose pipeline carries hydrogen fluoride as the medium; a ball valve has been chosen for use. The temperature range is from -20°C to 80°C. In another case, the temperature range is from -60°C to 80°C, with a pressure range of 0.2 MPa to -0.2 MPa. I would like to ask the experts here what type of material should be used for such a medium
I would recommend MONEL 400, but the sealing gasket does not seem to be suitable; our HY-LOK ball valves can only withstand temperatures down to -54 degrees℃
I would like to use one lined with PTFE; I’m not sure if that will work. Also, what should be done regarding the ball at the center?
If PTFE is used as the lining, how should the center of the ball inside be handled?
They should all be able to be made into PTFE.
Can this negative pressure also meet the requirements? Also, part of it is handled using anhydrous hydrofluoric acid
Fluorinated-lined valves cannot be used in vacuum systems