For the operating conditions of wash towers, characterized by normal temperature and low pressure, how do you choose the flange sealing surface?
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I’ve just started working with this area, and I noticed that all the components are made of FF material. For instruments that are frequently exposed to acids and bases, doesn’t using FF material increase the risk of leaks?
The leakage issue is related to temperature and pressure; even on the FF side, it is possible to achieve a very high nominal pressure. Take a look at what the nominal pressure of the FF face flange is What is your actual operating pressure?
3 bars to 6 bars – it’s indeed very small; that’s okay, right?
In terms of sealing surfaces, the FF surface indeed has the worst sealing performance; it’s advisable to use an RF surface if possible. However, since the pressure in your case is relatively low, it’s acceptable.
The key is to prevent the surface from being corroded and to choose the right material. The other flange surfaces also leak due to corrosion