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800 psi cannon help

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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800 psi cannon help

Unread postAuthor: Mike_Hunt0420 » Tue Jun 02, 2009 11:12 pm

i've been posting about my 800psi repeater for a couple weeks now, I have the hpa tank and regulator I am having serious problems finding fittings that can take the pressure to construct the gun out of. all I can find is black iron, galvanized, and brass, all rated to 150. anyone that knows wjere to get sufficient fittings in the northern california/redding ca area please throw me a bone. i'm lost on finishing a truely decent cannon...
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Unread postAuthor: Mitchza89 » Tue Jun 02, 2009 11:34 pm

Despite the 150psi rating, they can take a hell of a lot more pressure then that. All it is is a safety precaution so the manufacturers of the fittings don't get sued. With what you mentioned, it should be safe at 400-500psi. Anymore then that and your playing with fire, now matter how good your fittings are.

Sorry I can't be of anymore help mate.
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Last edited by Mitchza89 on Tue Jun 02, 2009 11:41 pm, edited 1 time in total.
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Unread postAuthor: Technician1002 » Tue Jun 02, 2009 11:40 pm

Mitchza89 wrote:Despite the 150psi rating, they can take a hell of a lot more pressure then that. All it is is a safety precaution so the manufacturers of the fittings don't get sued. With what your using, it should be safe at 400-500psi. Anymore then that and your playing with fire, now matter how good your fittings are.

Sorry I can't be of anymore help mate.


To get stuff actually rated to the higher pressure, visit a hydraulics supplier.

Hydraulic pumps supply fluid to the components in the system. Pressure in the system develops in reaction to the load. Hence, a pump rated for 5,000 psi is capable of maintaining flow against a load of 5,000 psi.


Info clipped from http://en.wikipedia.org/wiki/Hydraulic_machinery
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Unread postAuthor: Mike_Hunt0420 » Tue Jun 02, 2009 11:57 pm

thank you for the help, i'll pick up a few of the afore mentioned fittings and make a coaxial out of them, should be decent. i'll search around for a supplier of higher rated fittings and post my sniper as soon as possible. the coaxial i'm going to build until then should be up in a day or two. thanks for all the help as always, any further input is always welcome.
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Unread postAuthor: Moonbogg » Wed Jun 03, 2009 12:15 am

Mc Master has fittings that will work. Did you look?
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Unread postAuthor: Mike_Hunt0420 » Wed Jun 03, 2009 11:52 am

I will as soon as I can get to my computer, i've been surfing the net on my phone this whole time and mcmasters won't load on it. once again thanks for the help.
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