Are there variances on pressure rating on ANSI flanges.
I.E. 3" diameter std 150 class line,,,,C/S
<100F,,,,,,,285psi
PSV set at 295psi
Acceptable or not???
What safety & failure issues do I have to be concerned about on welding on the subject matter above.
If welding is not the route can lock ring flanges be used in this service.