tripplec wrote:I've run through the search feature with several phrases and haven't seen any posts on this. Is there any reason a properly functioning reg (mainly 1st stage) would stick closed cutting off your air....
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Here's one catastrophic first stage seat failure that occurred while diving with my RAM. When the new, old stock USD seat material extruded up into the orifice cone further than the throw of the activating pin and pad I was left with a total lockup of my first stage. No air. Not my favorite way to decide when to end a dive
1scary hp seat.JPG
I advise throwing out any seats made like this one, and going with later versions in which the sealing material is captured within the smaller boundary of a circular hole in the metal seat base. This seat was NOS, US Divers original equipment, that I had made about 4 dives with. Unknown date of manufacture, and questionable storage conditions before I acquired it along with about a dozen just like it. Maybe time and Texas heat had a serious effect on the molecular structure of the material. I wasn't sure how well it would actually hold up, but sort of "assumed" that a failure would just result in air leaking instead of ceasing!
Anyone know the time range that these particular seats were made?
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