Is the metal wound gasket installed properly?
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The DN350, PN600 metal wound gasket seems to have an issue: the outer ring is a bit large, and when the screws are tightened, the gasket shifts out of center. It is currently being tested for air tightness at 6.9 MPa – is there a possibility that it might crack? Is there anyone who can recommend a standard?
It might crack; it’s better if it cracks earlier. It will be troublesome once feeding starts
Metal wound gaskets are divided into static fluid sealing and high-speed fluid sealing. An \"inner steel ring\" is used for high-speed fluid sealing, while an outer steel ring is suitable for high-pressure static conditions. For general static fluids, steel-ring-free metal wound gaskets are used. Keep in mind that it cannot be used on metal wound gaskets without a steel ring in applications with high flow rates; once corroded or welded apart, it will cause damage to the gasket and may enter the valve opening, affecting the valve’s ability to close.
The outer diameter of the gasket should be chosen based on the size of the outer diameter of the protrusion on the flange sealing surface; in your case, it’s in conflict with the studs. .
The outer ring of the inner and outer gaskets already serves a positioning function, so it is normal for it to be close to the bolt. The shape of the gasket in the image may be due to a product quality issue (excessively large outer diameter), or it could be caused by excessive pre-tensioning force.
Class600 and PN600 are different descriptions
Thank you everyone; it has reached a maximum of 6.8 MPa, everything is fine
Pay attention to the units; although we all know it’s Mpa, what you wrote is mpa
With such high pressure, is a metal wound gasket still appropriate? ? ?
Indeed, what you say makes sense, but I’m not sure how to choose. Could you please explain it to me?