That's what I was telling the engineer it has to do with the GAS test , and I think he knows that too but doesn't want to admit his mistake. He' a good and very knowledgeable man, but stubborn as a mule.
I'm in a bit of an argument with a veteran engineer. He's claiming all model M gate valves should be able to hold natural gas presser without leaking, I disagree. I'm telling him I've done PSL 3G test on model Ms before and they definitely leak under gas pressure. Can someone please confirm...
