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Need help with sprinkler valve....not modding!

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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Need help with sprinkler valve....not modding!

Unread postAuthor: Rayman_1337 » Thu May 10, 2007 8:05 pm

I have modded my sprinkler valve, and attached it to my chamber, and I start to pump air into the chamber for the first time and air is slowly leaking out of the barrel end, and when I keep going it starts to make a farting noise......help please =[
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Unread postAuthor: mopherman » Thu May 10, 2007 8:08 pm

is your external bleed switch off? turn it off and clean the diaphram. you can do this by taking the top off, grabbing the little circle on the edge of the phram, and yanking it. clean it off and put it back in.
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Unread postAuthor: frankrede » Thu May 10, 2007 8:08 pm

Sounds like you spring is in, open your valve and put some lithium grease on the rubber.
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Unread postAuthor: demilus » Thu May 10, 2007 8:10 pm

Make sure that the valve is on the right way (sounds dumb, but seriously check it.). Grease where the diaphragm and the seal to the barrel meet. This helps make a better seal.
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Unread postAuthor: Rayman_1337 » Thu May 10, 2007 8:13 pm

Alright, yea the external bleed switch is off, Il trying greesing it up.

And I believe it is on the right way because when I pull on the blowgun the rest of the air comes out cuz i dont want to hear that farting noise...
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Unread postAuthor: lukemc » Thu May 10, 2007 8:30 pm

could it be backwards?
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Unread postAuthor: Rayman_1337 » Thu May 10, 2007 9:07 pm

Alright, I cleaned it, and then greased it up....still not holdin the air in......broken valve or what?

and its the right way...
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Unread postAuthor: pyromaniac » Thu May 10, 2007 9:20 pm

My valve did this for a while the problem was i wasn't getting air in fast enough for it to seal i put a ball valve on the forward end is, where the arrows are pointing. This sealed off the rest of the barrel from the sprinkler. pressure then built up enough to have it seal. Now it doesn't leak at all.
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Unread postAuthor: Rayman_1337 » Thu May 10, 2007 10:04 pm

So your valve leaked slightly when you started to pump air into the chamber? cuz thats what mine is doing :evil:
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Unread postAuthor: Monkey621 » Fri May 11, 2007 8:37 pm

I assume your using a bike pump (or some other kind of hand pump...). You need to either fill it into another tank and fill it or put a ball valve before or after the sprinkler (like Pyro said). Or resort to an air compressor, its just how sprinkler valves work. There used to be a diagram somewhere but I can't find the link...
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