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Sprinkler Valve Issue

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 Issue

Unread postAuthor: Davidvaini » Sat Nov 10, 2007 10:14 pm

Alright this is pretty much pissn me off.

My friend and I have a problem with our cannon. We've tried pretty much everything but we keep getting a fog horn noise and a small leak from the barrel. Below are some pics:

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Unread postAuthor: the beast » Sat Nov 10, 2007 10:20 pm

http://www.spudfiles.com/forums/sprinkler-valve-troubleshooting-guide-t8780.html
Try this out, it really helped me on my sprinkler valve.
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Unread postAuthor: LikimysCrotchus5 » Sat Nov 10, 2007 10:38 pm

Perfect!! Lol no i am having sortof the same problem but not really. First of what i recommend is to get that solenoid off and but plumbers epoxy in the hole. It hardens like steel. Give that some time to harden and you should be good. But something that might be more of a problem is the size of your sprinkler valve. Is it 3/4 inch? Well because i used a 3/4 inch sprinkler valve on my first cannon and i found out that since sprinkler valves have less flow that a ball valve but open quicker than a ball valve, i found that i had not so good performance because it had little flow. In this case i found it that a 3/4 inch ball valve had better performance than a sprinkler valve only because if the fact that it had a larger flow. So maybe try that :P

EDIT: Woah, Woah, Woah, Just went right over my head. :oops: That i believe is a DWV fitting on the end of your cannon. And are the other fittings also DWV, cause i cant see. That is dangerous and will have to be fixed if not rebuilt.


Now for my little problem :cry:

I have a 3/4 inch sprinkler valve that has been moded with a blowgun valve. Now since this valve had crappy performance on my first cannon, i decided to mount it onto my newly created 1.5 inch piston cannon which you can see here. I just put it on my cannon because my blowgun didnt have enough flow to actuate the piston, and i would prefer to use a trigger actuation rather than a ball valve. So i got the fitting and put it on and tried it out. Now i noticed that it honks even though it has been modded. So can anyone help :?:
If you need a pic just request it.
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Unread postAuthor: Zen/// » Sat Nov 10, 2007 10:47 pm

"I'd venture to geuss that 80% of time, your problem is one of the following:

1) My sprinkler valve makes loud noises!
It's honking. Get a better exaust valve - that is, mod your valve. "

The topic said "READ THIS BEFORE POSTING"
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Unread postAuthor: Davidvaini » Sat Nov 10, 2007 10:50 pm

ok call me stupid, but what is a DWV fitting and why is it dangerous?

Also we are just doing low pressure tests for now; just for saftey reasons.

We read that before posting and if you bothered to read, our valve is modded and our diaphram is clear of debree, oh and our arrows are facing the right way. Our problem still exsists.

From the topic "Read before you post":
"If problem persists, you may ask about it without repercussions. "

Anyways, back on topic... any ideas?
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Unread postAuthor: LikimysCrotchus5 » Sat Nov 10, 2007 11:25 pm

Ok Stupid (lol jk), DWV is dangerous only because it isnt meant for pressure. Ratings that say Nsf-pw mean that its pressure rated. DWV stands for Drain Waste Vent while PW means Potable Water, according to DYI.
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Fix up copper cannon
Fix up 4SPC
Start Stirrup pump
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Unread postAuthor: Davidvaini » Sat Nov 10, 2007 11:27 pm

oh Drain Waste Vent... I didnt realize thats what you meant....

grr I feel stupid... haha anyways... yeah do you think its a defective diaphram or some other rare issue?
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Unread postAuthor: LikimysCrotchus5 » Sat Nov 10, 2007 11:29 pm

Idk what is the size of your valve, 3/4 inch??
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4SPC, My 4" piston 3" porting cannon
Memo:
Fix up copper cannon
Fix up 4SPC
Start Stirrup pump
Start Toolies piston bazooka
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Unread postAuthor: Zen/// » Sat Nov 10, 2007 11:29 pm

non pressure rated DWV is ok to use under 60psi or so.
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Unread postAuthor: Davidvaini » Sat Nov 10, 2007 11:42 pm

yeah the sprinkler valve is 3/4 and we wont be going over 50 PSI for inital tests. We are rewashing the diaphram and use white grese
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Unread postAuthor: LikimysCrotchus5 » Sat Nov 10, 2007 11:45 pm

Ahhhh, As i mentioned in my post b4, i modded that valve and had no problems with it honking but performance sucked!! Now i am using my 3/4 inch sprinkler valve to pilot my piston valve.

I know this may seem random bu where do you live? U.S., state or city?
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4SPC, My 4" piston 3" porting cannon
Memo:
Fix up copper cannon
Fix up 4SPC
Start Stirrup pump
Start Toolies piston bazooka
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Unread postAuthor: PVC Arsenal 17 » Sat Nov 10, 2007 11:54 pm

The end of your blowgun has a safety tip. Remove that and tell me what happens.
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Unread postAuthor: Davidvaini » Sat Nov 10, 2007 11:54 pm

************ why?...
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Last edited by Davidvaini on Sun Nov 11, 2007 12:04 am, edited 1 time in total.
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Unread postAuthor: Zen/// » Sat Nov 10, 2007 11:55 pm

Yeah it restricts flow, use pliers or something to remove it, it's almost like a nozzle.
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Unread postAuthor: LikimysCrotchus5 » Sat Nov 10, 2007 11:55 pm

ohh cause i thought there might be a chance that you live in Cleveland, Ohio, where i live. Then we could help each other out. :D
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4SPC, My 4" piston 3" porting cannon
Memo:
Fix up copper cannon
Fix up 4SPC
Start Stirrup pump
Start Toolies piston bazooka
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