Huge Piston Valve
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PVC Arsenal 17
- Staff Sergeant 3
- Posts: 1762
- Joined: Mon Mar 27, 2006 4:18 pm
- Location: United States
Yes
It will shoot stuff.
It will shoot stuff.
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unisonmind
- Specialist
- Posts: 118
- Joined: Wed Jan 24, 2007 9:25 pm
thats a lot of money the tee by its self is like $40 hope you don't mess up
THE DIFFERENCE BETWEEN A FLOWER AND A WEED IS A JUDGEMENT
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williamfeldmann
- Specialist 2
- Posts: 216
- Joined: Sun Sep 09, 2007 6:55 pm
- Location: Ames. Iowa, middle of BFE
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
Last edited by williamfeldmann on Tue Nov 13, 2007 12:10 pm, edited 1 time in total.
Trying to figure out how to make a SCUBA first stage regulator work for portable charging station. If only that pesky job thing didn't keep eating up all my time...
"Only two things are infinite, the universe and human stupidity, and I'm not sure about the former." - Albert Einstein
"Only two things are infinite, the universe and human stupidity, and I'm not sure about the former." - Albert Einstein
o well 
, you get my point 
, you get my point 4SPC, My 4" piston 3" porting cannon
Memo:
Fix up copper cannon
Fix up 4SPC
Start Stirrup pump
Start Toolies piston bazooka
Memo:
Fix up copper cannon
Fix up 4SPC
Start Stirrup pump
Start Toolies piston bazooka