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First Barrel Sealing 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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First Barrel Sealing Valve

Unread postAuthor: TalonXxX » Sat Mar 04, 2006 3:49 pm

Howdy folks! This was my first attempt at a Barrel Sealing Tee Valve and overall it turned out pretty nicely. I had quite a lot of difficulty getting this thing to seal air tight at first, but with some help from Izzy I was able to get this thing working. It's pretty much an exact replica of Izzy's Son of a Zonker but with my 360 Ball Valve Hopper on it. It's 1" Sch 40 with 3/4" Sch 80 barrel and hopper. I have a brass tee connecting my quick connect and blowgun to my chamber. I have 8 10-24 x 1/2" machine screws holding the end plug onto the tee. My diaphram is 3 1/16" neoprene rubber discs with no equilization hole. I have: bolt -> washer -> 3-ply diaphram -> washer -> lock washer -> nut. I can only get it up to ~70psi and I think this is beacuse my pilot valve can't dump the pressure over 70psi fast enough to actuate the diaphram. I was thinking about getting a 3/4" Watermaster or a QEV to solve this problem. Enjoy!

Click links for larger photos:

<img src="http://photobucket.com/albums/c253/TalonSpud/Barrel%20Sealing%20Valve/th_IMG_2138.jpg"><a href="http://i29.photobucket.com/albums/c253/TalonSpud/Barrel%20Sealing%20Valve/IMG_2138.jpg" target="_blank">View 1</a>
<img src="http://photobucket.com/albums/c253/TalonSpud/Barrel%20Sealing%20Valve/th_IMG_2140.jpg"><a href="http://i29.photobucket.com/albums/c253/TalonSpud/Barrel%20Sealing%20Valve/IMG_2140.jpg" target="_blank">View 2</a>
<img src="http://photobucket.com/albums/c253/TalonSpud/Barrel%20Sealing%20Valve/th_IMG_2139.jpg"><a href="http://i29.photobucket.com/albums/c253/TalonSpud/Barrel%20Sealing%20Valve/IMG_2139.jpg" target="_blank">Valve View</a>
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Unread postAuthor: CS » Sat Mar 04, 2006 5:47 pm

Super Duper Nice Job Talon!

Very clean construction also. Almost to nice I would be afraid to shoot it. jk What you think about doing a video of this cannon? LOL, nice imation of the supah with those screws in the Tee.
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Unread postAuthor: Atlantis » Sun Mar 05, 2006 12:48 am

This is one of the best built guns I have ever seen, most people don't take the time to set up the ball valve, blowgun combo.
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Unread postAuthor: TalonXxX » Sun Mar 05, 2006 1:10 am

Pimpmann22... yeah I am planning on making a quick video of this guy in action. Hopefully tomorrow I will break out the camera and make one. Haha ya it's my own homemade supah! Maybe I should sell it for $100 ;)
Atlantis... wow thanks for that great compliment although I am sure you have seen nicer guns than this one! But I will take the compliment :D Ya I really like the way the ball valve, blowgun combo looks and it's very functional.
Like I said, I am hoping to get more pics and videos up tomorrow
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Unread postAuthor: DAltar » Mon Mar 06, 2006 6:40 pm

supahs are the other way around, the inlet is directly across from the actuation valve but i gess its close


edit: crap sorry nice job looks very clean cant say i have successfully made a piston valve myself.
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Unread postAuthor: CS » Mon Mar 06, 2006 7:03 pm

3" Supah on a 1"-.75" body sounds a bit OVERKILL! lol Not to mention very out of place on such a small bodied cannon.

At any rate, I see this cannon as a very clean setup and wouldnt suggest alteration. The cannon does look like it has oil or grease on it... There is "blackness" that can be seen in pic 3.
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Unread postAuthor: TalonXxX » Mon Mar 06, 2006 10:21 pm

Thanks pimpmann :) Ya... still gotta get it a paintjob... but I don't want just all black like my last cannon... any suggestions? T
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