Smaller vs Larger pipe sizes

Cannons powered by pneumatic pressure (compressed gas) using a valve or other release.
OuchProgramme
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I recently bought 10' of type L 1/2 inch copper pipe. I was wondering if it could withstand pressures of ~400 PSI. Would it have the same amount of power when compared to a 3/4 inch copper pipe when both charged at a same amount of psi?

Basically: Would it have more power than 3/4 inch air chamber?
Last edited by OuchProgramme on Sat Mar 29, 2008 5:52 pm, edited 2 times in total.
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DYI
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I was wondering if it could have the same amount of pressure power as a 3/4 inch pipe
Ummm... What are you on, and where can I get some? :lol:

I've really got no idea what you're talking about, could you please elaborate?
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OuchProgramme
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DYI wrote:
I was wondering if it could have the same amount of pressure power as a 3/4 inch pipe
Ummm... What are you on, and where can I get some? :lol:

I've really got no idea what you're talking about, could you please elaborate?
I just reread it, it sounded horrible T_T.

Edited :)
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elitesniper
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the smaller the bore the more pressures.
OuchProgramme
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elitesniper wrote:the smaller the bore the more pressures.
Hmm true. copper.org says it can withstand ~1090 or so.(Type L 1/2 inch)

Would it be more effective in propelling an object?
fireman565
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DYI wrote:
I was wondering if it could have the same amount of pressure power as a 3/4 inch pipe
Ummm... What are you on, and where can I get some? :lol:

I've really got no idea what you're talking about, could you please elaborate?
Funny.. :D

I understood it as he was asking if a larger diameter copper pipe would hold the same amount of pressure as a smaller diameter pipe. Sort of like in PVC, a 1 in. diameter is rated somewhere in the neighborhood of 400 psi, but a 3" is less rated but more volume. I'm not familar with copper that much but if that's what he's asking, a program like GGDT would be nice to solve the dilemma of more volume, or more pressure.. :D Its your choice. That question has been around our department for years, on a two-stage pump, its either pressure or volume on our fire trucks.. :)
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elitesniper
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well what cannon would it be if it can't propell an object? :?
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DYI
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Still no idea what you're asking...

1/2" copper of a given type (L in this case) is rated higher than 3/4" copper of the same type, but both would have no trouble with 400, or even 1 000 psi.

Obviously, if you have 2 chambers charged to 400 psi, and one has twice the volume of the other, there will be more potential energy in the larger one.
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POLAND_SPUD
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the things that affect the power of the gun are: the type of the valve you use (and its size) and the diameter and lenght of the barrel.. diameter of the chamber isn't as important...
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bigbob12345
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are you aking if you use 3/4in unstead of 1/2in will it be more powerful

Well if so the answer is obviously the 3/4in will have a decent bit more power, the more volume the more power.
but if you didnt know that already than why are you doing this in the first place :?
But that may not be what you are asking...
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