Hello, I have a 1322 that has a flat top Valve and Piston in from a well known maker. I'm just wondering should it hold pressure like a Sheridan or Benjamin. I put three pumps in four days ago and just wanted to see how it was holding pressure tonight. So I put a pellet in and nothing it was empty of air. I know it will hold overnight but how long should it hold? Also should you keep a pump in it for the seals or does it make any difference?Thanks!
Quote from: N6CRV on February 02, 2015, 10:57:27 PMHello, I have a 1322 that has a flat top Valve and Piston in from a well known maker. I'm just wondering should it hold pressure like a Sheridan or Benjamin. I put three pumps in four days ago and just wanted to see how it was holding pressure tonight. So I put a pellet in and nothing it was empty of air. I know it will hold overnight but how long should it hold? Also should you keep a pump in it for the seals or does it make any difference?Thanks! Yes keep two pumps in it for the seals.It should hold for as long as you store it. I have seen one hold for a year. If it leaks down in only three days, something is wrong with it.
Who installed the valve, you or the maker? Yea if ur out oh air in 3 days something's gone wrong. The o-ring inside the valve could be one problem. Maybe the check valve isnt sealing all the way or the stem piece. Could be a piece oh debris letting air slip pass one oh those 2
Another thought. Did u do anything to ur hammer spring? Or is the stem on the new flat top valve longer? So, maybe the hammer is constantly pushing on the stem ever so slightly and leaking air. I was also looking to get the piston and valve from Mellon. How fast did u get it after placing the order?
I have a Mellon piston and valve in my 1377 and it will easily hold air for months and months. I keep 1 pump in mine.
Pump it three times, COCK it and leave it sit over night. The hammer spring may be pushing it open just to where a tiny bit of air slowly leaks through.
Quote from: Matt15 on February 03, 2015, 10:21:25 AMPump it three times, COCK it and leave it sit over night. The hammer spring may be pushing it open just to where a tiny bit of air slowly leaks through.Thanks for the thought. I broke down and tried it. It was like about 1/3 down. I will try the leaving it cocked but that does not seem like a fix. But then again it will let us know if that is whats going on. I did write to see how he wants to go. I will say it sure makes power faster then stock. I will empty and put two pumps in with it cocked. Thanks!!
Quote from: N6CRV on February 03, 2015, 10:27:29 AMQuote from: Matt15 on February 03, 2015, 10:21:25 AMPump it three times, COCK it and leave it sit over night. The hammer spring may be pushing it open just to where a tiny bit of air slowly leaks through.Thanks for the thought. I broke down and tried it. It was like about 1/3 down. I will try the leaving it cocked but that does not seem like a fix. But then again it will let us know if that is whats going on. I did write to see how he wants to go. I will say it sure makes power faster then stock. I will empty and put two pumps in with it cocked. Thanks!!if it holds with it cocked, you may have to put 5 or more in it for storage (enough to overcome the hammer spring) so that you can store it uncocked.
If it continues leaking pump it 2 times and remove the valve from the tube with out firing it. Then put it in a container of water to see where the leak is coming from.
Quote from: Matt15 on February 03, 2015, 10:49:43 AMIf it continues leaking pump it 2 times and remove the valve from the tube with out firing it. Then put it in a container of water to see where the leak is coming from. Sounds like someone has been reading there Crosman Silent Rifle manual (now known as the Crosman 101), the simple trouble shooting tips that were the focus of that manual show a different way of thinking.