What is the maximum pressure that a PN2.0 metal wound gasket can seal? ?
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For example, if the gasket on the back pressure side of the safety valve is rated PN2.0, what maximum pressure of the process gas in the process pipeline can it seal? Seeking advice! Thank you!
It’s probably also related to the tightening force of the bolts
No one is answering! Let’s put it this way: can it seal process gas at 4.5 MPa?
4.5 MPa definitely won’t work; it will leak.
PN2.0 corresponds to a design pressure of 2.0 Mpa; generally, it won’t leak even at 3.0 Mpa, but it will definitely leak at 4.5 Mpa. Never do anything that exceeds the design pressure
For PN2.0, which corresponds to 150 bar according to the American standard and involves gas at a pressure of 4.5 MPa, a 600 bar flange is required.
Metal wound gaskets can achieve a sealing effect at 4 MPa, but you can’t use them since the dimensions are not suitable; they won’t work in that case. Additionally, the pressure level is related to the choice of flange – metal wound gaskets can seal at 10 MPa, but what’s the point of using a flange that operates at only 2 MPa? Understood
This depends on the grade of the flange; it has nothing to do with the gaskets. The thickness of the wound gaskets is always 4.5 mm, and the width doesn’t increase much even for higher grades
The flange is PN5.0, and the 2.0 gasket was also installed... Moreover, after installing the safety valve, no leaks were detected, so it should be fine
It’s installed and there’s no leakage... I’m just worried that it might start leaking after some time