Have you tried removing the gauge, re-applying teflon tape, and snugging it back down? My brand new valve arrived with this same issue.
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S.C.B.A Tank setup
- Thread starter anonymous_.457
- Start date
I dont think you can his gauge is leaking inside the scba tank valves not the fill station gauge.
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Your welcome brotha! Probably will just have to get a new SCBA valve that don't leak eBay has good valves no leaks and there in good condition and cheap! I'd go check it out.
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My 66cf 4500psi SCBA tank 45 min will be here this Saturday I'm pretty excited and my chronograph will be here tomorrow so I'll get to see what numbers my .457 and my .401 is putting out!
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Came across this on a valve installation paper, hopefully it will help:
5. Fit gauge locking pin into drilled cross hole below gauge port.
6. Locking pin will need to be driven home with a small hammer. This will lock the gauge into final position.
5. Fit gauge locking pin into drilled cross hole below gauge port.
6. Locking pin will need to be driven home with a small hammer. This will lock the gauge into final position.
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ok so I have a bigger problem with my tank..I saw that there's two sizes of the threads available and I did something dumb.. the two are 5/8" & 7/8" and I had changed the o ring and I knew it was bigger than 5/8" so I ordered the 7/8" without taking it off and measuring it.. got here a couple days ago and well it doesn't fit 
so I got my calipers and well mine is 1.125" on the threads.. which is 1 1/8" and now I can't find one anywhere.. hopefully one of you see this and can direct me to a valve..
thank you
Mark
so I got my calipers and well mine is 1.125" on the threads.. which is 1 1/8" and now I can't find one anywhere.. hopefully one of you see this and can direct me to a valve..
thank you
Mark
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That is a really old bottle. It appears to be aluminum wrapped in fiberglass. If it were me, I’d retire that bottle and get a newer old bottle, one that is carbon fiber wrapped. Perhaps Gerry will chime in and give his thoughts on it.ok so I have a bigger problem with my tank..I saw that there's two sizes of the threads available and I did something dumb.. the two are 5/8" & 7/8" and I had changed the o ring and I knew it was bigger than 5/8" so I ordered the 7/8" without taking it off and measuring it.. got here a couple days ago and well it doesn't fit
so I got my calipers and well mine is 1.125" on the threads.. which is 1 1/8" and now I can't find one anywhere.. hopefully one of you see this and can direct me to a valve..
thank you
Mark
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I have the same tank. When I first purchased it, it had a leak under the built in gauge as well. I was able to fix the leak myself. I removed the black plastic cap on the top of the valve, after bleeding off all of the air. Underneath is the needle for the gauge. Under the needle is a brass nut. Remove the nut. On the bottom side of the nut is a small O ring. That is where the leak was. I replaced the O ring and that fixed the leak.
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thank you so much..I was beginning to think about forgetting air tanks all together.. it's just frustrating because the tank seems nice shape and yet according to the dive shop it's trash..to be honest after hearing that.. well I guess I don't think much of carbon fiber..if it was plain aluminum or steel it would be hydro tested..I really don't like how nowadays we make so much stuff that is basically trash, either new
or after some time..I'll check on the o ring because that's a much easier fix than apparently trying to get another valve..
I'd assume that since it looks good outside and inside that it's reasonably safe to use?
thank you all
Mark
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ok so I have a bigger problem with my tank..I saw that there's two sizes of the threads available and I did something dumb.. the two are 5/8" & 7/8" and I had changed the o ring and I knew it was bigger than 5/8" so I ordered the 7/8" without taking it off and measuring it.. got here a couple days ago and well it doesn't fit
so I got my calipers and well mine is 1.125" on the threads.. which is 1 1/8" and now I can't find one anywhere.. hopefully one of you see this and can direct me to a valve..
thank you
Mark
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I may well be, I don’t know much, but it doesn’t look like any carbon fiber that I’ve seen ?
It is coming up on 30 years old…
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so if I can get the gauge to not leak.. would the tank be safe? I understand not dot approved but I don't plan on transporting it filled and I only planned on filling with my compressor.. I'd like to know before I fill it that it's not going to explode.. to me it looks good.. I've got certified welding bottles currently from airgas that makes this one look new.. but I definitely don't need anything blowing up..I may well be, I don’t know much, but it doesn’t look like any carbon fiber that I’ve seen ?
It is coming up on 30 years old…
another thing I don't understand is why pretty much all the air tanks don't have lids or protective rings for the valve..
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30 years old.. WOW guess I didn't do the math right.. well use? or not?? I don't want to be in the News from the local fire department 
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In 8/24 it will be 30 years old (born in 1994).30 years old.. WOW guess I didn't do the math right.. well use? or not?? I don't want to be in the News from the local fire department
I know a lot of people here will say there is nothing wrong with using an expired tank, and if one bought one new today, and KNEW how it was handled over the next 30 years, I might agree. But personally, not knowing what that tank has been thru, I don't think I'd use it.
A brand new tank is $600. A used one that is 15 years old cheaper. The measuring stick I'd use to determine what to do would be, "What is my life worth to me?"
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Take it to a professional fill center and have it tested/serviced!!!30 years old.. WOW guess I didn't do the math right.. well use? or not?? I don't want to be in the News from the local fire department
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They would likely not test it, as it is well beyond its service life. In light of recent posts, and seeing it is not fully encapsulated in carbon fiber, personally I would replace it with a newer old bottle.
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