Thanks for your input.rhwestfall wrote:Complete brainstorm having never seen the system:
Wondering if some sort of rudimentary "safety" exists where back-pressure on the fill hose (caused when connected to a vessel for filling) would then cause the bypass to close and build pressure?
Thanks, It could be a hardware store cap for all I know; it was on it when I got the thing. But, I wasn't aware of the 125 PSI rating on it, so thanks for that tip...antique diver wrote:Aaach!... Fire One! (Cool compressor, by the way, but concerned about your safety... so I look forward to helping in any way I can)
Is that a hardware store variety pipe cap in place of your final relief valve? Looks suspiciously like a cast iron 125 psi fitting.
About the relief valve - the seat material is probably worn or corroded and failing to make a good seal. Could be metal to metal, or metal to a softer material, but neither lasts forever in that kind of service. If you can get me a few good photos of interior relief valve parts maybe I can offer some suggestions.... but best bet may be to replace the relief valve, as it is VERY important to your continuing to dive with all your body parts intact.
That will require some careful matching of the threads on your existing relief valve, and I'm not sure what may have been used in France in that era.
A good photo of the valve body threads if they are male, plus show any washers or similar sealing materials will be helpful. Check to see if the threads appear to be tapered like our common pipe threads. If at all possible use a thread pitch gauge to accurately measure the threads per inch or per cm. Also, a caliper accurate reading on the outer diameter of the male threads at both ends of the threaded area.
Nice piece of diving history you have!
That's very kind of you, thanks.antique diver wrote:I was guessing from the photo, but the cap could be of HP quality. A close up of that may help us determine its suitability... Just want you to be safe.
Here's just the cap, and it's not a great picture, so if a different angle is needed please let me know.antique diver wrote:I was guessing from the photo, but the cap could be of HP quality. A close up of that may help us determine its suitability... Just want you to be safe.
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