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View Full Version : Leak out of the back of a retro valve.



blackdeath1k
03-15-2016, 05:42 PM
OK. I've actually had 2 issues. With 2 different markers. One is confirmed fixed. Just need to order a new sear and bolt. It was bound to happen. Wore the sear out on my 20 year old automagRT.

Issue #2 is with the wife's marker. It's a retro valve from the early 2000s. It has all new orings by me and has ran great for a year. The previous owner added a L10 bolt. Recently it started leaking out of the back thru the regulator piston bypass when the trigger is pulled in. Let the trigger out and it quits leaking. I put the piston from my other marker and the leak appeared to stop. I remember that a new piston was put on the market after the L10 came out. I assume this is the issue? That over time the stock retro piston wore out due to the L10 pressure. But before I purchase a new piston for this marker can someone confirm this to be the case?

Also. When the velocity nut was removed I noticed someone had shoved a small oring between the small spring in the spring pack and the reg piston. Is there a reason this would have been done? None of my other mag valves have ever had this. And none of the diagrams show a oring there. It's flat due to the pressure and grease being on it. But I'm about 90% sure it used to be a round urathane oring.

athomas
03-15-2016, 08:51 PM
I suspect the regulator piston in the retro valve is the original low pressure version. It should be upgraded to the higher pressure version for level 10 operation. Yoiu can verify this by turning the velocity/pressure down. If it stops leaking, then you know that is the problem.

The oring shouldn't be there. It will cause velocity issues. I suspect it got in there by accident.

blackdeath1k
03-15-2016, 09:16 PM
Well. Like I had said. Just putting a different piston in there solved the problem. I can't confirm which kind of piston was in the other retrovalve. I just wanted to make sure that was how that symptom acted with the old piston and L10. Guess I have a parts list to buy at the first of the month