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Received my o-ring kit from Captain o-ring, and replaced the rings I had found were leaking with the soapy water snoop test. The bad o-rings were three of the four 13-3 rings and both of the 12-2.5 rings in the two air chambers. Charged it right up to 300 bar with no problem and no further...

Jumping on this old thread: The o-rings in my AV Avenger 22 cal have all hardened and gone square. Obviously they are no longer suitable for holding 300 bar pressure in that state. I’ve ordered an o-ring kit from Captain O-ring to get me back in business. The rings supplied in this kit are...

Yeah, I’ve seen the same thing on o-rings on motorcycles. They take a set after being squished for a long time. The shape of these are unique, I’m guessing because they were also distorted by the high pressure. I’ll do a show and tell when the new ones come in.

No, these a black. The replacements from captain o-ring are just normal o-rings. Ordered a kit so they are on the way.

Alrighty then… mystery solved. I’ve got leaks from both air tanks. The main tank is only leaking at the receiver end (fill end is fine) but the little expansion tank underneath it is leaking from both ends. Took things apart and only managed to make the leaks worse. I guess I’ll be looking...

No, I know not to do that.

Tried a few things yesterday. Tried charging with the gun cocked. No difference. Tried raising the regulated pressure. No difference. Tried degassing the gun and recharging. That did make a difference for the worse. After degassing, it would only charge up to 2000 psi and then stalled...

Thanks. That does make sense.

Yes. I’ve owned the gun for a couple of years now, and it has run fine up until now. I lowered my regulated pressure down to about 1600 psi back when I got the gun, for extended number of shots (indoor target range). During troubleshooting this pressure loss problem I did raise the regulated...

Why is that? Can you expound on that?

Yes, the gun holds the 3000 psi charge for multiple days, no problem. The check valve appears to be working normally: pressure builds relatively rapidly on the compressor gauge until it exceeds what’s in the gun, then a slight dip when the check valve opens, and pressure continues to build a...

I have an Air Venturi Avenger 22, bought refurb from Pyramid Air a couple of years ago. I’ve been very happy with it so far. Took it out of the gun safe a few days ago for some target shooting and my compressor won’t charge it past 3000 psi. Put a plug in the end of the charge hose and it...