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3" Sprinkler valve shorty

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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3" Sprinkler valve shorty

Unread postAuthor: Carlman » Thu Mar 19, 2009 9:16 am

Gday guys,

Quite a while back i got myself a 3" or 80mm hunter sprinkler valve rated to 220psi working pressure.

Scince then it has sat, but sit it shall no longer do, it shall rise the the occasion od un sittingness and furfil its destiny!!

*cough* anyway, here are some pics, first gun i am going to make with this beast is a small chambered small barrel compact gun for car storage and random shootings lol

Then when money allows i will build a biger chamber with poly so i can use it at 220!

Comments welcome.

UPDATE: Here is a pic of the proposed gun. The propane line is on QD to which a scrader valve can be hooked on instead, but mainly runing on propane from a 2kg.

I have glued the chamber and modded the valve. i tested the valve with a 1/2" BV pilot and it worked a dream! i found i cannon fill through the chamber unless it is sealed through pilot first if im using a bike pump. i have no barrel as of yet so no test shots were fred just dry shots.

It will be a 5 second gun as i call it, open propane bv, close propane bv, load GB fire and repeat.
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Attachments
19-02-09_2305.jpg
look at the screws!!
19-02-09_2305.jpg (30.25 KiB) Viewed 572 times
19-02-09_2304.jpg
3" PORTING POWAAA!!!
19-02-09_2303.jpg
chamber arrangement for now
01-03-09_2341.jpg
blue = propane setup
red = bv
pink = breach
grey = barrel
yellow = tee
01-03-09_2341.jpg (39.4 KiB) Viewed 352 times
Last edited by Carlman on Sun Mar 29, 2009 9:57 am, edited 1 time in total.
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Unread postAuthor: Pilgrimman » Thu Mar 19, 2009 10:10 am

:shock: This post is made of awesome and win! Can't wait to see some destruction :D :twisted:
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Unread postAuthor: mark.f » Thu Mar 19, 2009 10:24 am

Well, there's certainly an application for such a valve.

I would rather just make a piston valve, though, but that's just me.

DR and SpudMonster have both proved the power of these valves. I think all of their cannons using a 3" valve have used the exact same valve (the SAME valve... DR gave it to SpudMonster).
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Unread postAuthor: Carlman » Thu Mar 19, 2009 10:53 am

pilgrimman - yes, yes it is! Free large porting valves FTW

I would too mark if the prices on such fittings over 2" wernt so damn expensive, given this valve was free and all!

you havny got the links handy do you mark?
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Unread postAuthor: mark.f » Thu Mar 19, 2009 12:15 pm

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Unread postAuthor: psycix » Thu Mar 19, 2009 12:41 pm

Nice! 3" sprinklers are usually hundreds of dollars. What did you pay for this?

Only downside: Its a sprinkler.
Just like a 1" sprinkler has the flow of a 3/4" QEV, this 3" one will not have a full 3" porting.
It would be a very good main valve for a 2 or 2,5" barrel, but for 3" your real valve porting will surely be smaller then your barrel. Which is something that is OK to do, but personally I would never use a smaller valve then barrel.

220 psi is nice for such a diameter though, and the size makes it a great valve!
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Unread postAuthor: jrrdw » Thu Mar 19, 2009 12:48 pm

I think you should get a bigger valve, this one is kinda small. :shock: bahahahaaa... Dam, just use a welded up 55 gallon drum for a main chamber. That might hold enough air. :P
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Unread postAuthor: Carlman » Thu Mar 19, 2009 1:12 pm

psycix - i got it for free!! the powers of the mystical rubbish tip!

i dont intend on using a barrel bigger than 2.5" anyway

jrrdw - thanks for the reply, yea i was just thinking that i mean who wants 3" porting :roll: :D

thats not a bad idea jrrdw, when i move out of surburbia i might just do that :idea:
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Unread postAuthor: SEAKING9006 » Thu Mar 19, 2009 1:18 pm

Carlman wrote:when i move out of surburbia i might just do that


Sigh.... The things we could all do were it not for the suburbs.... :(
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Unread postAuthor: Carlman » Thu Mar 19, 2009 1:23 pm

SEAKING9006 wrote:
Carlman wrote:when i move out of surburbia i might just do that


Sigh.... The things we could all do were it not for the suburbs.... :(


yea and im moving to 5 acres of aussie bushland! 550m long and 100m wide, perfect spudding ground.

what do you think of the valve ay?
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Unread postAuthor: SEAKING9006 » Thu Mar 19, 2009 1:30 pm

Carlman wrote:
SEAKING9006 wrote:
Carlman wrote:when i move out of surburbia i might just do that


Sigh.... The things we could all do were it not for the suburbs.... :(


yea and im moving to 5 acres of aussie bushland! 550m long and 100m wide, perfect spudding ground.

what do you think of the valve ay?


Very, VERY impressive. I just finished work on testing a prototype launcher, it did less than spectacular. I bet if I had used THIS thing, it would have even compensated for the abhorrent dead space. :)
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Unread postAuthor: psycix » Thu Mar 19, 2009 3:09 pm

What are you going as a pilot?
Not a long-hosed blowgun I hope..
It just screams for a QEV!
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Unread postAuthor: Carlman » Thu Mar 19, 2009 8:51 pm

most likely a 1/2" bv as i want to chamber fill but we will see

hmm imangine a marble barrel! overkill to the max
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Unread postAuthor: daberno123 » Thu Mar 19, 2009 9:19 pm

Carlman wrote:most likely a 1/2" bv as i want to chamber fill but we will see


You know you could mod the QEV to fill from the chamber side. Just a suggestion. :D
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Unread postAuthor: Carlman » Fri Mar 20, 2009 12:44 am

daberno123 wrote:
Carlman wrote:most likely a 1/2" bv as i want to chamber fill but we will see


You know you could mod the QEV to fill from the chamber side. Just a suggestion. :D


i could but i want this to be beastly but simple stupid at the same time, we shall see.
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