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3" Sprinkler valve shorty
Posted: Thu Mar 19, 2009 9:16 am
by Carlman
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.
Posted: Thu Mar 19, 2009 10:10 am
by Pilgrimman
Posted: Thu Mar 19, 2009 10:24 am
by mark.f
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).
Posted: Thu Mar 19, 2009 10:53 am
by Carlman
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?
Posted: Thu Mar 19, 2009 12:15 pm
by mark.f
Posted: Thu Mar 19, 2009 12:41 pm
by psycix
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!
Posted: Thu Mar 19, 2009 12:48 pm
by jrrdw
I think you should get a bigger valve, this one is kinda small.
bahahahaaa... Dam, just use a welded up 55 gallon drum for a main chamber. That might hold enough air.
Posted: Thu Mar 19, 2009 1:12 pm
by Carlman
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
thats not a bad idea jrrdw, when i move out of surburbia i might just do that
Posted: Thu Mar 19, 2009 1:18 pm
by SEAKING9006
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....
Posted: Thu Mar 19, 2009 1:23 pm
by Carlman
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?
Posted: Thu Mar 19, 2009 1:30 pm
by SEAKING9006
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.
Posted: Thu Mar 19, 2009 3:09 pm
by psycix
What are you going as a pilot?
Not a long-hosed blowgun I hope..
It just screams for a QEV!
Posted: Thu Mar 19, 2009 8:51 pm
by Carlman
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
Posted: Thu Mar 19, 2009 9:19 pm
by daberno123
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.
Posted: Fri Mar 20, 2009 12:44 am
by Carlman
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.
i could but i want this to be beastly but simple stupid at the same time, we shall see.
