Huge Piston Valve
Posted: Tue Nov 06, 2007 11:00 pm
Has anyone tried to make a pisotn valve out of a 6" Tee Joint. What do you all think will happen?
Yes
It will shoot stuff.
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Posted: Tue Nov 06, 2007 11:01 pm
Posted: Tue Nov 06, 2007 11:29 pm
LOl good answer.
Posted: Tue Nov 06, 2007 11:37 pm
thats a lot of money the tee by its self is like $40 hope you don't mess up
Posted: Tue Nov 06, 2007 11:55 pm
Yeah that really sucks how they get that damn expensive.. the most I can afford is maybe a 4"
Posted: Wed Nov 07, 2007 12:42 am
Posted: Wed Nov 07, 2007 5:47 am
The bigger the valve, the better the flow.
And its more expensive ofcourse.
And its more expensive ofcourse.
Posted: Wed Nov 07, 2007 11:27 am
$40, what are you complaining about? Over here in the uk, a 6" would cost about $250.
Posted: Wed Nov 07, 2007 12:19 pm
a 160mm would be cheaper though, same size almost aswell
Posted: Wed Nov 07, 2007 12:33 pm
I just (about) completed a 6 inch tee valve. They work like any other tee valve, just bigger. Expect to pay handsomely for it.
$48 for sch 80 tee
~$10 a piece for the 4 inch porting bushing at the front, 2 inch porting bushing at the pilot, etc.
$60 for the 2 inch sprinkler pilot valve (still have to get)
plus the cost of your piston
What I learned:
1. Spend the moneys for the sch 80 stuff or you are sevely limited by pressure (Plumb Supply told me the sch 40 maxs around 120 psi)
2. Plan for a big enough pilot valve, and for the piston to hit the pilot bushing like a freight train. Major strength issues arose.
3. Design your piston for weight, not fit. Don't attempt a chamber sealer, unless you really have good tools and know what you are doing. The size make this difficult. My piston is roughly 6 inches in length and would weigh a ton if not foam cored.
4. This is not a weekend project, I can build a 2 inch in around an hour plus cement drying time. It took me nearly 20 hours to build this monster and it isn't totally finished yet due to pilot issues.
But on the bright side, it will make an excellent winter project, when you can't be shooting. If you are really serious about it, go for it but plan. Its a lot of money if it doesn't work out.
@Likimychrotchus
Both of those cannons use 4 inch tees. They have 6 inch chambers but size down to 4 inch inlets
$48 for sch 80 tee
~$10 a piece for the 4 inch porting bushing at the front, 2 inch porting bushing at the pilot, etc.
$60 for the 2 inch sprinkler pilot valve (still have to get)
plus the cost of your piston
What I learned:
1. Spend the moneys for the sch 80 stuff or you are sevely limited by pressure (Plumb Supply told me the sch 40 maxs around 120 psi)
2. Plan for a big enough pilot valve, and for the piston to hit the pilot bushing like a freight train. Major strength issues arose.
3. Design your piston for weight, not fit. Don't attempt a chamber sealer, unless you really have good tools and know what you are doing. The size make this difficult. My piston is roughly 6 inches in length and would weigh a ton if not foam cored.
4. This is not a weekend project, I can build a 2 inch in around an hour plus cement drying time. It took me nearly 20 hours to build this monster and it isn't totally finished yet due to pilot issues.
But on the bright side, it will make an excellent winter project, when you can't be shooting. If you are really serious about it, go for it but plan. Its a lot of money if it doesn't work out.
@Likimychrotchus
Both of those cannons use 4 inch tees. They have 6 inch chambers but size down to 4 inch inlets
Posted: Thu Nov 08, 2007 10:35 pm
wow sounds intense. Please post those pictures when you are done and give us some numbers with them.
Posted: Thu Nov 08, 2007 10:46 pm
o well 
, you get my point 
, you get my point