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sprinkler valve leaks

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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sprinkler valve leaks

Unread postAuthor: beastmode986 » Wed Apr 11, 2012 8:34 pm

I read the trouble shooting guide and i tried a few things that i could. basically i was shooting the gun at around 80-120 psi then i unscrewed the blowgun to screw it in straight because it was crooked. then after i screwed it in and tightened everything it leaked out of the barrel whenever i pumped it. so i took the top off wiped everything down put vaseline on as a lube and it still leaks . what should i do?

Edit by Moderator: No need to yell.
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Unread postAuthor: jackssmirkingrevenge » Thu Apr 12, 2012 1:11 am

Is the blowgun connection airtight?
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Unread postAuthor: beastmode986 » Thu Apr 12, 2012 8:56 am

Yes it is idk y its leaking I don't. See an issue
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Unread postAuthor: Gun Freak » Thu Apr 12, 2012 10:05 am

Why the heck would you put Vaseline in it? That would just screw up the inside. Take the top off and clean it out really good, making sure there aren't bits and pieces of anything inside or knicks on anything.
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Unread postAuthor: jsefcik » Thu Apr 12, 2012 10:23 am

did you use teflon tape on all the threads?

you have have torn the diaphram inside
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Re: sprinkler valve leaks

Unread postAuthor: jimmy101 » Thu Apr 12, 2012 5:05 pm

beastmode986 wrote: i unscrewed the blowgun to screw it in straight because it was crooked. then after i screwed it in and tightened everything it leaked out of the barrel
So is it leaking around the f'd up threads where the blowgun was cross threaded?

Teflon tape might fix it. Plumbers putty might fix it. Or, the valve may be toast because of the trashed threads.
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Unread postAuthor: beastmode986 » Thu Apr 12, 2012 7:17 pm

theres no leaks i can hear its weird it leaks straight out of the barrel half way through the downward pumpstroke
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Unread postAuthor: Crna Legija » Fri Apr 13, 2012 1:54 am

you probably block the equalization hole try fill via the blow gun.
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Unread postAuthor: beastmode986 » Fri Apr 13, 2012 8:46 am

wait so i should attach a schrader to the blow gun to fill? ok ill try it asap
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Unread postAuthor: Crna Legija » Fri Apr 13, 2012 10:01 am

yeah you will need to hold the blow gun open it fills verry slowly but should work and you have to take the fill valve out before firing
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Unread postAuthor: jsefcik » Fri Apr 13, 2012 11:23 am

beastmode986 wrote:wait so i should attach a schrader to the blow gun to fill? ok ill try it asap



just put your schrader valve into the the air tank it self, best is in a think area
or double layerd
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Unread postAuthor: dewey-1 » Fri Apr 13, 2012 12:14 pm

beastmode986 wrote:theres no leaks i can hear its weird it leaks straight out of the barrel half way through the downward pumpstroke


Please post some pictures of the valve, chamber and blowgun.
All comments are speculation without some pictures.
What brand and model of sprinkler valve?
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Unread postAuthor: beastmode986 » Sat Apr 14, 2012 9:59 am

Umm idk the brand I'll try to post pics ASAP I know the valve is green and.commonly available
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Unread postAuthor: jsefcik » Sat Apr 14, 2012 11:05 pm

beastmode986 wrote:Umm idk the brand I'll try to post pics ASAP I know the valve is green and.commonly available


is it made by orbit? rainbird?

is it jar-top or none ?



even thought you might have made the hole for the blowgun to go into you can thread brass fitting into that hole w/ teflon of course, then thread your nipple into that, i messed up threading a couple times , and that trick works just fine
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Unread postAuthor: beastmode986 » Sun Apr 15, 2012 2:08 pm

ok i officially dont know what it is i tried epoxy around the schrader valve and epoxy around the blow guns threads it still leaks i tightened everything also everything on the inside looks fine its this exact valve http://www.lowes.com/ProductDisplay?par ... &cId=PDIO1
is it possible to post pics from my phone directly?
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