Most guns are set to a certain pressure due to valve locking. Example Benjamin discovery is only 2000 psi. While the Benjamin marauder pistol with same air tube is set to 3000 psi. Once you fill past the recommended pressure, the valve locks and it will release air when the hammer strick the valve. But with a regulator, the valve will only see the pressure you set at. The max pressure now is how much your tube will be able to hold. Most companies test their air tube over 3 times it's pressure and it will not explode. So guns like the marauder, I installed a huma reg and fill to 4000 psi and shoot down to 1500 psi to get max shot per fill. Anyone else do the same? I know how dangerous hpa is but I'm confident my air tube will hold 4000. I wouldn't push it to 5000 or up even though I know it will hold it.
Do you over fill with reg?
- Thread starter Airmanator
- Start date
They may test their tubes beyond what they determine to be the max fill pressure but they don’t do it for years like you are going to do. You will eventually explode. Enjoy your extra shots while you can.
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The rifle is designed by engineers as a system. The materials are chosen to have adequate strength for their intended stress level. The cylinder is subject to stress and thermal cycling causing the cylinder metal to fatigue. Testing has shown it will last its rated service lifetime of many years if filled within its rated pressure. If you over pressurize it may not result in instant failure but will shorten its lifetime. It is not linear function (10% higher does not mean 10% shorter life). The regulator may also have lifetime issues if operated with more than its rated high side pressure, have you thought about what would happen if the reg failed wide open and allowed 4000psi into the other areas of the rifle that was designed also for 3000psi? Do you know what the weakest place in the system is and how it will fail? We all know regulators never fail, never drift or stick right? If you need more shots you need to get a larger cylinder for your rifle if available or alternately buy a rifle designed with high shot count to do it safely.
Overfilling is not the way to go.
Overfilling is not the way to go.
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This is the second time you have brought this dangerous practice up. DON'T DO IT!
In case your first thread and the answeres on this thread are not clear enough ....
DON'T OVER FILL YOUR TANKS
This is just the kind of information that red feedback balls are for. Bad idea, bad advice.
In case your first thread and the answeres on this thread are not clear enough ....
DON'T OVER FILL YOUR TANKS
This is just the kind of information that red feedback balls are for. Bad idea, bad advice.
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You are exceeding the specified fill pressure for your gun by almost 40%. I would discontinue this practice immediately. You are also over pressuring the regulator and shortening its lifespan. You should consider tossing that air cylinder and getting a replacement. Have a pair of calipers? Check the width of the cylinder at both ends and then in the middle - bet you won't want to fill that high anymore.
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As others have stated; overfilling your PCP is not recommended and is very dangerous. We cannot condone this action or discussion.
-Michael
-Michael
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Wow that is a ballsy question. Usually when something states on every pages "Danger do not overfill" I would say that a sign.
Apparently, not everybody sees it that way. That is how I stay in business at the fire station, I like it in a way
.
But it is still not something that should be done or promoted.
Apparently, not everybody sees it that way. That is how I stay in business at the fire station, I like it in a way
.But it is still not something that should be done or promoted.
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As with most pressure vessels, there is a SWP, or safe working pressure. For normal use, that pressure should be adhered to. These vessels also have a periodic test pressure (like SCBA tanks) of 5/3 SWP. That pressure is only held for one minute on the periodic hydrostatic test. There is also a Proof Test pressure for a certain number of vessels per production run where they are brought to a high pressure (for SCBA it’s 15,000 psi) held for a minute, then pressure is raised until failure.
But the SWP takes into account all factors such as minor structural damage, corrosion, cyclic stresses, age, minor manufacturing defects, etc., and should not be exceeded for normal use. If you increase your pressure over the SWP, you increase your probability of failure. It’s simple DON’T DO IT!
But the SWP takes into account all factors such as minor structural damage, corrosion, cyclic stresses, age, minor manufacturing defects, etc., and should not be exceeded for normal use. If you increase your pressure over the SWP, you increase your probability of failure. It’s simple DON’T DO IT!
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test pressure and designed use pressure are 2 different things and such NEVER be interchanged
when air cylinders are hydro tested to higher pressures for testing, they are in a containment in case they FAIL
can you say --- big a , bad a , boom
THE RISK IS NOT WORTH THE REWARD
when air cylinders are hydro tested to higher pressures for testing, they are in a containment in case they FAIL
can you say --- big a , bad a , boom
THE RISK IS NOT WORTH THE REWARD
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As a metal fabricator / welder, I've done countless 'destruction tests' over the years,
and while they can get pretty risky / sketchy, they're still done under control & safely..
Over-Filling a metal cylinder over and over and over? Trust me.. NOT a good idea!
Just because there's always a Darwin Award up for grabs
doesn't mean that people need to strive to win it. Just my $0.02
Sam -
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I just want to say thx to everyone for their informative replies.It's been enlightening. And thx to Michael for unlocking the post so I and others like me can have free access to such educational material and therefore be safer air gunners.
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Nope-Neve and the only time I fill to a guns max psi is if I’m going out stalking critters other then that i shoot off the bench with my RegMan regulator hooked up and I’m usually 50 to 100 psi under max fill being I’m shooting at a consistent psi, so far I’ve been lucky and have never overfilled a airgun and I’m keeping it that way.
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When they hydro tannks, they're looking for a certain amount of expansion. When they dont expand is when they fail because the material has become over worked and brittle. In simplified terms, its like bending a metal coat hanger until it breaks. By over filling...your making the metal weaker. Not to mention thread engagement on endcaps or strength of valve screws. How many times can you bend it before it breaks?? Russian roulette ain't my idea of a good time!
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