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Pneumatic 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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Unread postAuthor: nathanhd123 » Sat Jul 30, 2011 4:31 am

I have been searching and searching but I cannot find a sprinkler valve for a good price in the UK. It seems you can get one for about $15 in the US. In the UK they want around £30. Any ideas?
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Unread postAuthor: jsefcik » Sat Jul 30, 2011 11:09 am

nathanhd123 wrote:I have been searching and searching but I cannot find a sprinkler valve for a good price in the UK. It seems you can get one for about $15 in the US. In the UK they want around £30. Any ideas?


You could pay somebody to mod one for you but it isnt going to be cheap,
Pm me about this , i should be able to help ya
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Unread postAuthor: mattyzip77 » Sat Jul 30, 2011 12:36 pm

Try to find out how much shipping would cost from the U.S.A. to where you are located. You are probably going to pay more for shipping that the darn sprinkler valve!!!! :oops:
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Unread postAuthor: jackssmirkingrevenge » Sat Jul 30, 2011 12:57 pm

For just ten quid posted you can get a 2" PVC union that will allow you to make a burst disk valve with better performance than any sprinkler valve will ever give you.

For good performance in bores over 1" and a low budget, I would strongly suggest a combustion cannon.
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Unread postAuthor: nathanhd123 » Wed Aug 03, 2011 2:54 am

I also am having trouble finding PVC primer in the UK. Anyone know where I can get hold of any?
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Unread postAuthor: daniel0663 » Wed Aug 03, 2011 3:05 am

I also am having trouble finding PVC primer


PVC primer should be with the PVC cement section, if not go to a plumbing store and ask.
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Unread postAuthor: Crna Legija » Wed Aug 03, 2011 4:29 am

If you really cant find some(doubt it) you could use Acetone, i believe that basic what primer is.
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Unread postAuthor: jsefcik » Wed Aug 03, 2011 6:43 am

Crna Legija wrote:If you really cant find some(doubt it) you could use Acetone, i believe that basic what primer is.


or even nail polish remover works I've used if before and no problems
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Unread postAuthor: Crna Legija » Wed Aug 03, 2011 7:09 am

jsefcik wrote:
Crna Legija wrote:If you really cant find some(doubt it) you could use Acetone, i believe that basic what primer is.


or even nail polish remover works I've used if before and no problems


well nail polish remover is acetone.
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Unread postAuthor: streetfire » Wed Aug 03, 2011 7:16 am

why the hate for ball valves? my gun uses a ball valve and if you get a fast opening one it will be cheaper and it will not loose so much power
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Unread postAuthor: Crna Legija » Wed Aug 03, 2011 7:33 am

streetfire wrote:why the hate for ball valves? my gun uses a ball valve and if you get a fast opening one it will be cheaper and it will not loose so much power


yeah but if your looking for more power in the same sized package then piston valves are the go, also they look better then spring loaded ball valves.
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Unread postAuthor: nathanhd123 » Wed Aug 03, 2011 9:12 am

I have a PVC pipe cleaning solution that is used before applying cement. is this the same as PVC primer?
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Unread postAuthor: Gun Freak » Wed Aug 03, 2011 9:17 am

Nathan, no, priming softens the pipe and prepares for bonding to the other surface. Cleaning just does exactly that, cleans the pipe.
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Unread postAuthor: Technician1002 » Wed Aug 03, 2011 10:08 am

Note some cleaner contains the same chemistry as the primer. Check the label. I found this out when I played with dying PVC. Just cleaner won't penetrate and leave the dye in the plastic. The primer type cleaner will. Read more in this thread. The secret is to use the ABS/PVC cleaner as it has the magic ingredient. You can make primer stains any color you like now, including fluorescent highligher colors.
http://www.spudfiles.com/forums/making-magic-with-pvc-t21723.html

You are looking for cleaner that contains tetrahydrofuran (THF).
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Unread postAuthor: mattyzip77 » Wed Aug 03, 2011 10:58 am

Tech that is awesome! DO you have a ratio, like how much dye to you put in the cleaner?? EX= 1ounce of dye to 10 ounces of cleaner??
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