I have a J-Valve that leaks with the valve turned off. The air is escaping past the o-ring on the reserve lever. Is there a kit to rebuild these valves?
John
Rebuilding A USD J-Valve
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Discussion of diving methods and equipment available prior to the development of BCDs beyond the horse collar. This forum is dedicated to the pre-1970 diving.
Discussion of diving methods and equipment available prior to the development of BCDs beyond the horse collar. This forum is dedicated to the pre-1970 diving.
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pesceuomo
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simonbeans
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There were a few models of J-valves and as such, you need to know which one you have. If it is later than it has an O ring. Early ones had washers for sealing. I would be sure all the parts are in the right configuration and tighten down the bonnet. That is usually the case on J-valve-side leakage. Do you have Robert's book?
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simonbeans
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Yes, Fred Robert's book, Basic Scuba, 2nd edition has schematics of the USD valves from the 1950s through later 1960s (which did not change during the J-valve succeeding years.) The later variation shown in Roberts is not the best diagram. I can't find my Mar-Vel catalog which has a nice schematic breakdown of the USD J-valve as produced recently.
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