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I gotz a 35 bar pushbutton 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: POLAND_SPUD » Thu May 28, 2009 4:55 pm

OMG... the marshmellow cannon... AGAIN !! I think I've seen every single part of it and even when I close my eyes I see it :shock:

sometimes I am afraid to open the fridge for fear of finding the marshmellow gun there... :D

...now speaking of fridge... have I told you about fridge compressors ?? they are great high pressure pumps and...... :wink:


@Technician1002
lol I am just kidding... no offence I really think it's good that there are people who use and promote alternative techniques or methods - just like the valve used on your gun


@ BTB lol show us pics of it...
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Unread postAuthor: Technician1002 » Thu May 28, 2009 5:05 pm

POLAND_SPUD wrote:...now speaking of fridge... have I told you about fridge compressors ?? they are great high pressure pumps and...... :wink:



@ BTB lol show us pics of it...


Since you asked.. :D

Why do you want photos of my fridge?
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Fridge compressor.. LOL..
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Unread postAuthor: POLAND_SPUD » Thu May 28, 2009 5:43 pm

It's a kind of weird fetish...

...don't ask :wink:
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Unread postAuthor: Technician1002 » Thu May 28, 2009 7:22 pm

far_cry wrote:can you but some video to see how he is work
and a picture for the parts


It's all posted over on http://www.crazybuilders.com Enjoy. :D
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Unread postAuthor: Brian the brain » Fri May 29, 2009 2:13 am

I think he might actually be asking about MY valve Tech..

The two valves are defenitly related, as mine is sort of a reversed version of yours..but I don't see why the QDV has to come up in every topic.

Maybe you got too little feedback.
We understand how it works, so few questions are asked.
It is indeed a great valve..If it were around a couple of years ago, it might have become more popular than normal piston valves..

So there!
Go and be proud!
:wink:

I'll post some pics soon so we can get back on topic..
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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 » Fri May 29, 2009 5:07 pm

Brian the brain wrote:I think he might actually be asking about MY valve Tech..

:D :D :D :D
yes

and thank you Technician for the website you give me
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Unread postAuthor: SEAKING9006 » Sat May 30, 2009 1:45 pm

You know, I think I speak for the crowd when I say I would greatly appreciate some diagrams and a full parts list with some instructions. If this valve works the way I hope it does, I may not need to develop my idea so I can focus on solving my bolt problems. Can't figure out for the life of me how to get the gas from the valve to the inside of a rotating blowback bolt easily. Without having to develop a valve it would make work much easier.
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Unread postAuthor: twizi » Wed Jun 03, 2009 7:13 pm

any pic or updates
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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: Brian the brain » Thu Jun 04, 2009 4:28 am

Haven't had time.
Í hope I'll have time today, if not, I'll post parts- and assembled pic tomorrow..
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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: Brian the brain » Thu Jun 04, 2009 2:13 pm

Hope this helps..
Just a 1/4" galvanised T..
One end holds a 1/4" fitting, other side has a threaded tube screwed inwards.This too could be an ordinary fitting.
(The inside diameter of the right side must be slightly larger than or possibly equal to the sealing surface on the left.The closer you get the two , the easier it will be to push open at high pressures.
In the case of equal surface areas sealing will all be up to the counter spring..)


Through this runs a threaded rod.On the rod I created a pump-head with two rounded (and sized with improvised lathe )nuts and an O ring in the middle.
The O-ring is slightly larger than the inside of the smooth pipe it slides in, so it seals.( floating-O-ring)

On the other side another O-ring is held in place by 1 nut.This acts like the valve stem in a schrader, or as a poppet valve if you will.
However..it seals from the outside IN.
The slightly larger piston created the force needed to keep the oppposite side shut.

A spring on the inside of the Tee pushes the piston side ( on the right) away from the 1/4" fitting, on the left.
On the left side the 1/4" fitting has a 1/4"-1/2" reducer ring..so , when connected to a barrel, air has enough room to pass the poppet nut.


Parts list:
1 threaded rod
1 Tee ( of any size !)
2 nipples/fittings ( as long as the fit onto the Tee., smooth inside!)
1 reducing ring ( optional, on barrel side)
2 regular nuts, lathed to size
1 capnut, also lathed down, as the actual push button
1 spring
2 O-rings.
And some telfon tape ofcourse.
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Attachments
pushbuttonvalve.jpg
Air comes in from the bottom.Push the button ( rounded capnut) on the right and air will rush out the left side.
It's still easy to push open by hand between 500 and 600 psi..
pushbuttonvalve.jpg (20.2 KiB) Viewed 2822 times
pushbuttonvalve2.jpg
Internals...minimum parts..just make sure the left inserted pipe or fitting has a smooth inside, so the O-ring seals.
You only need a total of 2 O-rings.
pushbuttonvalve2.jpg (26.37 KiB) Viewed 2815 times
Last edited by Brian the brain on Thu Jun 04, 2009 2:28 pm, edited 1 time in total.
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: SEAKING9006 » Thu Jun 04, 2009 2:21 pm

Only one more question.

Does it vent ALL the air in the chamber?
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Unread postAuthor: Brian the brain » Thu Jun 04, 2009 2:30 pm

Nope..it acts the same as a blowgun or hammer valve,

I got 10 shots out of it using the hose volume of my fridgy only!
( at 40 bar, tapping it softly with a hammer)

I edited my previous post..parts list and diagram found above..
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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: twizi » Thu Jun 04, 2009 3:26 pm

very nice and it so simple i must expierment with this idea if thats alright with you
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Unread postAuthor: Brian the brain » Fri Jun 05, 2009 11:13 am

If I wanted too keep it to myself I wouldn't post it.. 8)


Please use it and PM me about the results...
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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: boom_o_matic_2.0 » Fri Jun 05, 2009 12:30 pm

so from your pic I take it as a "big schrader valve" (for lack of a better term) I like the idea. I want to incorperate that into my next rifle. :P
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