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AT44 Valve Leak
https://www.airgunforum.ca/forums/topic54867.html
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Author:  Chewy [ Sun Apr 28, 2013 10:36 am ]
Post subject:  AT44 Valve Leak

Hey Folks,

Got air leaking out of the valve. Changed stems to see if it was the stem, but the same thing happened. It's leaking out of the 6 holes in the valve where air is supposed to come from during your shot. Any Ideas? I'm thinking I need to make a visit to someone who actually knows whats what - so I can learn. I get frustrated when these issues happen, and I"m not done finding the sweet spot on the gun yet.

Author:  rsterne [ Sun Apr 28, 2013 11:07 am ]
Post subject:  Re: AT44 Valve Leak

Really only two places the air can leak out those holes.... between the stem and the seat, or past the O-ring that seals the Delrin seat into the valve body.... Take the valve apart, and gently push the seat out from the back side (the side with the 6 holes) and inspect it.... I'm betting either the tapered face where the stem seals is damaged from a piece of dirt.... or the O-ring on the outside of the seal is pooched (technical term).... I think they supply a spare with the gun (it looks like a white Delrin donut with a very thin O-ring on the outside).... if not, sniper Dan is your friend....

Bob

Author:  Chewy [ Sun Apr 28, 2013 4:49 pm ]
Post subject:  AT44 Valve Leak

Bob, that was exactly what it was - the seal in the valve itself. Problem solved, thanks!!

Now, onto the next issue....

Author:  topher1266 [ Mon Apr 29, 2013 9:54 am ]
Post subject:  Re: AT44 Valve Leak

Don't throw the old one away,you can get the o-ring replaced at a good hydraulic shop.

Author:  Chewy [ Mon Apr 29, 2013 12:15 pm ]
Post subject:  AT44 Valve Leak

Grr too late thought it was pooched!

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