McMaster 1/4" QEV safe for high pressure?
Well i really wouldnt say its 100% safe because those are meant for like 125 psi max, but people have taken them to 800 psi without failure, so i think 300 psi wouldnt blow it up.
4SPC, My 4" piston 3" porting cannon
Memo:
Fix up copper cannon
Fix up 4SPC
Start Stirrup pump
Start Toolies piston bazooka
Memo:
Fix up copper cannon
Fix up 4SPC
Start Stirrup pump
Start Toolies piston bazooka
- VH_man
- Staff Sergeant 4
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whoooo........... i guess two of us are thinking the same thing but in different calibers.........
(e-high-five)
mine will be more of a High-velocity test bed at first though..... GGDT extimates 1400 FPS at 500 PSI if i make my chamber big enough..... something i really cant argue with.
(e-high-five)
mine will be more of a High-velocity test bed at first though..... GGDT extimates 1400 FPS at 500 PSI if i make my chamber big enough..... something i really cant argue with.
- SpudFarm
- First Sergeant 3
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nothing is too long VH
well serious then, a 6 foot cannon isn't that long really, the problem is that you cant get to 1400fps since that is near the particle speed of air. plus that the sound barrier will hunt you down.
cut of the barrel small lengthes until it starts loosing a tiny bit of speed and then you have your perfect length of the barrel.
i am a confusing guy
well serious then, a 6 foot cannon isn't that long really, the problem is that you cant get to 1400fps since that is near the particle speed of air. plus that the sound barrier will hunt you down.
cut of the barrel small lengthes until it starts loosing a tiny bit of speed and then you have your perfect length of the barrel.
i am a confusing guy
"Made in France"
- A spud gun insurance.
- A spud gun insurance.
Al-xg managed to rupture his (UK-type) QEV piston diaphragm while it was being used at 850psi (regulated from a 3000psi HPA paintball tank) by pushing the barrel too far into the valve so it poked the flexible piston.
I personally think 850 is OTT despite it working for him for over 100 shots the diaphragms are not indestructible and I'd hate to have one burst (literally becoming a randomly triggered burst disk) on me.
If you really want to have some confidence in what you feel is safe to use a valve to you need to ask the manufacturer what kind of safety factor they used.
I personally think 850 is OTT despite it working for him for over 100 shots the diaphragms are not indestructible and I'd hate to have one burst (literally becoming a randomly triggered burst disk) on me.
If you really want to have some confidence in what you feel is safe to use a valve to you need to ask the manufacturer what kind of safety factor they used.
- mark.f
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300 PSI shot with Q.E.V.
I'd say they're safe... just don't load until you're ready to shoot, and definitely watch the muzzle. If anything, you'll get a failure of the seal, which would cause whatever's in the barrel to be launched.
I'd say they're safe... just don't load until you're ready to shoot, and definitely watch the muzzle. If anything, you'll get a failure of the seal, which would cause whatever's in the barrel to be launched.