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update(core pictures)BTB pushbutton valve

Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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update(core pictures)BTB pushbutton valve

Unread postAuthor: far_cry » Mon Jul 13, 2009 6:42 pm

first of all i want to thanks BTB for this share of this concept.
piloting the piston valve that i build was the hard part, what i seek is a small trigger ,good flow and fast opening and handling a HPA.

BTB concept solved my problem

so here it is


[youtube]http://www.youtube.com/watch?v=Qr2KWlM2I88[/youtube]


picture of the parts will come later
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Last edited by far_cry on Thu Jul 16, 2009 1:52 pm, edited 3 times in total.
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Unread postAuthor: Hotwired » Mon Jul 13, 2009 6:58 pm

700psi certainly shifted that sharpish.

Power assisted piloting ^^
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Unread postAuthor: far_cry » Mon Jul 13, 2009 7:08 pm

Hotwired wrote:700psi certainly shifted that sharpish.

Power assisted piloting ^^


i know that mt English not the best

but i know for sure that what you type above is not understandable
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Unread postAuthor: Ragnarok » Mon Jul 13, 2009 7:16 pm

far_cry wrote:i know that mt English not the best but i know for sure that what you type above is not understandable

My English is not the best either - but it is well above average and I can tell you with absolute certainty that it certainly is understandable.
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Does that thing kinda look like a big cat to you?
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Unread postAuthor: Hotwired » Mon Jul 13, 2009 7:31 pm

I'll bet I'm much worse at your language so in short:

Good work :)
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Unread postAuthor: Mitchza89 » Mon Jul 13, 2009 8:07 pm

That's fantastic. I'd love to know how it works. Is it just a big bulky homemade poppet valve or?..
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Unread postAuthor: Brian the brain » Tue Jul 14, 2009 2:42 pm

Nice to see you tried this!
Thanks for sharing it.

Somehow my 1/4" version seems a bit silly...


It must have huge flow!
That's fantastic. I'd love to know how it works. Is it just a big bulky homemade poppet valve or?..


It used a piston opposite to the sealing face.
Pressure is now equal on both sides and you only need to push back against the force generated by a spring to open it.
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Gun Freak wrote:
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
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Unread postAuthor: boyntonstu » Tue Jul 14, 2009 3:47 pm

Brian the brain wrote:Nice to see you tried this!
Thanks for sharing it.

Somehow my 1/4" version seems a bit silly...


It must have huge flow!
That's fantastic. I'd love to know how it works. Is it just a big bulky homemade poppet valve or?..


It used a piston opposite to the sealing face.
Pressure is now equal on both sides and you only need to push back against the force generated by a spring to open it.


How is the button rod sealed to the valve body?

BoyntonStu
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Unread postAuthor: Brian the brain » Wed Jul 15, 2009 2:37 pm

How is the button rod sealed to the valve body?

with a floating O-ring...

Side note:
If you put a strong spring on the button side this valve will work as a regulator..closing when the spring force is equaled by the pressure.

The valve must be connected to a closed system of course..for it to regulate pressure..


But perhaps I'll have to make one to show you guys how... :D
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Gun Freak wrote:
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
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Unread postAuthor: far_cry » Thu Jul 16, 2009 12:08 pm

Brian the brain wrote:Nice to see you tried this!
Thanks for sharing it.

Somehow my 1/4" version seems a bit silly...
It must have huge flow!


all thanks to you BTB .and yours a bit silly !!! i think not ,its handsome
and yes he have superb flow

boyntonstu wrote:How is the button rod sealed to the valve body?

BoyntonStu


the both sides of the T have 1/2" nipples ,and there is a pictures for the valve core .i think you will know how the piston rod sealed up
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Unread postAuthor: Mateo » Fri Jul 17, 2009 9:19 am

did you machine those pieces yourself?
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Unread postAuthor: twizi » Fri Jul 17, 2009 10:46 pm

o so it a tee two nipples and a rode with orings attched so that the force are ballanced is it hard to trigger at 700 psi
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dont play with airsofter with 1000$ gun and play with a 5 dollar pair of glasses
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Unread postAuthor: inonickname » Fri Jul 17, 2009 11:08 pm

twizi wrote: is it hard to trigger at 700 psi


Seen as it's balanced, I'll guess not. Seriously man, it's been said at least twice in this thread that the only force to counter is the spring...

Very good work far cry
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Unread postAuthor: twizi » Fri Jul 17, 2009 11:19 pm

sorry did not read the thread it like 300 here give me a break :shock:
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Unread postAuthor: inonickname » Sat Jul 18, 2009 1:04 am

twizi wrote: it like 300 here


...THIS IZ SPARRRRTTTAAAA!!
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