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Old 02-17-2007, 03:26 AM   #1
Bobby_M
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After a ton of drama getting my all-used kegging setup, I finally got my tank filled and attached this micromatic regular. I turn the bottle on, set the secondary to 10psi and then closed off the output ball valve and gas just continuously hisses out of this little 1/8" hole in the front of the regulator. I've looked at some pics and all regs have this hole, but what's going on exactly?
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Old 02-17-2007, 03:38 AM   #2
vtfan99
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Sounds like the diaphragm (sp?) may be working improperly. I had a similar problem. I disconnected everything and took the regulator apart, reseated things, and then re-assembled. Now it works like a champ. Certainly worth a shot before buying a new one.

 
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Old 02-17-2007, 04:44 AM   #3
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Ok, I opened the front housing. Now, I see the diaphragm and it has a small hole in the center of it, maybe about 1/16"and it looks like that little needle valve made the hole. Is there supposed to be any holes in the diaphragm or what? I bought it on ebay so anything is possible.
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Old 02-17-2007, 04:44 AM   #4
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I had a similar problem when adjusting my regulator. The diaphragm got stuck and I was getting air hissing through a small hole. I didn't take it all apart, but after adjusting it back and forth a few times it eventually unstuck itself and has worked fine since then.

 
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Old 02-17-2007, 07:55 PM   #5
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I took this damn thing apart and reassembled like 15 times and nothing stops it. I tried putting a little keg lube on the diaphragm where it seals to the housing. Nothing. There doesn't appear to be any pinholes in it, exept for the one in the center which I've come to find is supposed to be there.
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Old 09-24-2016, 04:22 PM   #6
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Did you ever figure out the problem Bobby as I am having the same issue? I have a double body cornelius regulator and it keeps leaking out of the small hole in the front of the second body of the regulator. I've taken it apart and lubed it up and can't figure out the problem.
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Old 09-24-2016, 04:51 PM   #7
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fwiw, all regulators have a relief hole on the knob side of the body, so that the pressure on the "outside" face of the diaphragm always reflects the atmosphere.

If there is gas flow through the hole, the diaphragm is not sealing. Either there's a hole or crack that's opening under pressure, or the inside edge of the diaphragm is not sealed to the body, or there's something wrong with the needle valve.

Rebuild kits are usually cheap enough to warrant a try...

Cheees!

 
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Old 09-26-2016, 09:21 PM   #8
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I finally figured it out. It was the seat valve that is held by a spring (similar to a poppet valve) on the back side of the regulator. I took it out, put it back in, and it now works. Thanks.
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Old 09-26-2016, 09:26 PM   #9
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Not uncommon for debris to get pinched between the seat/needle valve and the hole for it in the diaphragm.
There's a procedure that will typically clear that out:
- close the cylinder valve
- open the regulator knob wide open (highest pressure)
- open the shut-off valve if so equipped
- remove any low-pressure hoses
- point the low-pressure output of the regulator in a safe direction, get a good grip on the assembly, then open and close the cylinder valve in a few short blasts.
- put everything back together

Cheers!

 
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