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how to make a piston valve

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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Unread postAuthor: SpudFarm » Tue Apr 15, 2008 9:18 am

no it does not..

when you make a TEE valve you put the pass through seat so far in, there is no air comming in behind the piston.

and when you uses the advanced piston there is a guide rod that "seals" at the pilot. that will say your guide rod will pull in your piston.
belive it or not but i had better results over the chrony with the advanced piston after i put on the washer on the pilot to make it seal "better"

like you can see in my diagrams there is no guide rod on the "easy" piston so you would have to put it far back. those pistons is so long that you never ever get a opening there. the back of it will be in the "end" (behind the chamber inlet) and make it treat as a coaxial.
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Unread postAuthor: MrCrowley » Tue Apr 15, 2008 3:09 pm

spudfarm wrote:no it does not..

when you make a TEE valve you put the pass through seat so far in, there is no air comming in behind the piston.

You mean the barrel, right? :?
And of course no air from behind the piston goes out the barrel, it's all part of the pilot volume :?

spudfarm wrote:and when you uses the advanced piston there is a guide rod that "seals" at the pilot. that will say your guide rod will pull in your piston.
belive it or not but i had better results over the chrony with the advanced piston after i put on the washer on the pilot to make it seal "better"

Wait, are you even replying to what bigbob, watto and I were dicsussing?
I'm not sure what this has to do with it. Maybe you should quote in the future to stop confusion.

spudfarm wrote:like you can see in my diagrams there is no guide rod on the "easy" piston so you would have to put it far back. those pistons is so long that you never ever get a opening there. the back of it will be in the "end" (behind the chamber inlet) and make it treat as a coaxial.

Ahh what? :?
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Unread postAuthor: SpudFarm » Tue Apr 15, 2008 3:20 pm

ok this topic is dead!
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