OP
ermaclob
Contributor
ima head over to the shop in a day or 2 and have them fix up the whole manifold.
Ominous tanks leak?? Help
- Thread starter ermaclob
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In my experience, it is more likely to be a leak through/past the burst disc assembly and replacing it will resolve the problem. But if you don;t know the service history of the manifold and you plan on doing technical diving with it, just rebuild and clean the whole thing including new burst discs.
kotik
Contributor
Good point--
KD8NPB
Contributor
Rebuild.
Do it yourself.
There's maybe 5 parts in each valve. Just make sure they go in the right way.
Do it yourself.
There's maybe 5 parts in each valve. Just make sure they go in the right way.
OP
ermaclob
Contributor
KD8NPB
Contributor
Buy a rebuild kit, it will replace all applicable parts. The only question is whether your valve has a female or male stem. You will need to build a tool to remove the nut and tighten the nut. It can be made out of a flathead. You simply put a little notch in it to give some space for the valve stem threads to poke through.
The only things that need to be replaced are the o-rings. And maybe the burst disks.
If you have calipers you can measure the o-rings and determine the standard AS568 "dash" number using a standard o-ring sizing chart: O-ring Sizing Chart
Then just buy a small supply of the specific o-rings that you need. I always get the Viton o-rings for O2 compatibility.
I get my burst disks from NE Scuba supply.
Take photos of the manifold as you disassemble it, makes putting it back together a lot easier. Clean all of the parts. Replace the o-rings. Use a tiny amount of an appropriate lubricant where appropriate. Re-assemble.
If you need your manifold to be O2 clean, then cleaning and reassembly is much more involved.
If you have calipers you can measure the o-rings and determine the standard AS568 "dash" number using a standard o-ring sizing chart: O-ring Sizing Chart
Then just buy a small supply of the specific o-rings that you need. I always get the Viton o-rings for O2 compatibility.
I get my burst disks from NE Scuba supply.
Take photos of the manifold as you disassemble it, makes putting it back together a lot easier. Clean all of the parts. Replace the o-rings. Use a tiny amount of an appropriate lubricant where appropriate. Re-assemble.
If you need your manifold to be O2 clean, then cleaning and reassembly is much more involved.
idive2
Contributor
Not a doubles diver but just curious why only one tank would be low with a leak in the center of the crossbar ?
Never saw one of these valves apart not sure what the seal and seat arrangement looks like within that
isolater bar valve.
Never saw one of these valves apart not sure what the seal and seat arrangement looks like within that
isolater bar valve.
The leak is from the isolator valve, not the crossbar.
This leak would allow both cylinders to drain. If both cylinder valves were open, then both cylinders would drain equally through the leak.
However, if one of the cylinder valves were closed, then such a leak would drain only the cylinder with the open valve.
This leak would allow both cylinders to drain. If both cylinder valves were open, then both cylinders would drain equally through the leak.
However, if one of the cylinder valves were closed, then such a leak would drain only the cylinder with the open valve.
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