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Why are the valves wearing out so quickly?

2017-12-24View Original

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In the workshop, there is 69% sulfuric acid; the temperature is between 160 and 170°C, and the absolute pressure is around 80 kPa. In the past two days, the control valves have been replaced too frequently – one valve made of 304+F46 lasted for two days, while another valve made of 304+PFA corroded and developed perforations after only 11 hours. It’s unclear what the cause of this is; Same valve, same location; the other one has been in use for over a year with no problems either. Could someone in Wangtanzi help analyze it?
Reply #22017-12-24
Is there a problem with the material? Otherwise, why would this happen?
Reply #32017-12-24
It’s also unclear; no material testing was done; Logically, products from the same manufacturer shouldn’t be like this; the materials can’t lie, right?
Reply #42017-12-24
It’s likely caused by corrosion, or the valve selected is not suitable
Reply #52017-12-24
Can F46 withstand such high temperatures? I think it’s hanging
Reply #62017-12-24
Our company is a professional manufacturer of fluorine-lined valves; how about we have a discussion?
Reply #72017-12-24
The temperature is too high; F46 cannot withstand such high temperatures
Reply #82017-12-24
I was wondering what material you use for your pipes?
Reply #92017-12-24
I was wondering what material you use for your pipes?
Reply #102017-12-24
I was wondering what material you use for your pipes?
Reply #112017-12-24
Fluoroplastics are clearly not suitable for temperatures above 150.

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