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Old 03-08-2008, 12:32 AM   #1
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Default leaky regulator

so i have a used regulator and its leaking around the left of the cylinder coupling nut (as shown in the pic, though thats not my exact regulator). I have the little plastic washer in there and teflon tape on the threads of the co2 tank. any ideas what i might try?

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Old 03-08-2008, 03:20 AM   #2
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Does the reg have a rubber o-ring where it attaches to the tank? If it does then don't use the washer. I'm guessing here on the problem.

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Old 03-08-2008, 04:49 AM   #3
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i don't believe it does. i will have to double check but i'm 99% sure it doesn't have one.

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Old 03-08-2008, 01:28 PM   #4
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Take the teflon tape off the threads. The seal isn't made on the threads and you're just stopping the gasket from seating.

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Old 03-12-2008, 04:45 PM   #5
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i took off the teflon tape and now it seems the gasket is sealing properly but now its leaking out of the side with the threads.....

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Old 03-12-2008, 04:49 PM   #6
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How good is your teflon gasket?

If you have your coupling nut tight and the gasket is good, it shouldn't leak.

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Old 03-12-2008, 04:50 PM   #7
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The other end of the stem you mean? Where it threads into the regulator body? That DOES require teflon tape.

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Old 03-12-2008, 04:55 PM   #8
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No, the part that attaches to the co2 tank. It has a teflon washer that mates the coupler to the tank valve.

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Old 03-12-2008, 04:56 PM   #9
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If it is leaking, then the gasket isn't seating properly, unless the brass nipple the nut slides on is cracked where it flares out to form a flange, but that is very unlikely. Replace the teflon gasket, or if you have an o-ring, match the grooves that will be worn into it with the tank valve before starting to screw the nut into place.

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Old 03-12-2008, 04:59 PM   #10
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I'm asking the OP exactly where it's leaking. He said: i took off the teflon tape and now it seems the gasket is sealing properly but now its leaking out of the side with the threads....." and I'm trying to understand if the leak is still at the nut or on the OTHER end of the stem at the regulator (because it too can be considered the threaded end).

If it's coming from the between the nut and the regulator valve threads, everyone is right about the gasket. I have an Oring on mine but you can make your own gasket out of almost anything. Try a plastic coffeecan lid cut into a circle with a small hole in the middle.

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