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Soda stream spud gun project

Posted: Mon Nov 14, 2011 3:10 am
by AircannonSweden
I think i will build one something like this:

http://imageshack.us/f/141/fdkjwfkef.jpg/

Pics when its done come soon. I just need a coupler from "R15"-"R8" for the soda stream tank :)

Posted: Mon Nov 14, 2011 5:07 am
by cannon monkey
umm ok :)
.....

Posted: Mon Nov 14, 2011 5:25 am
by jackssmirkingrevenge
why use a ball valve when you can get a quick exhaust valvefor less than $10 posted?

Posted: Mon Nov 14, 2011 6:41 am
by AircannonSweden
jackssmirkingrevenge wrote:why use a ball valve when you can get a quick exhaust valvefor less than $10 posted?
Yes i want a QEV but i live i Sweden so...naaaa,the shipping is kinda expensive :/

Posted: Mon Nov 14, 2011 6:49 am
by jackssmirkingrevenge
AircannonSweden wrote:Yes i want a QEV but i live i Sweden so...naaaa,the shipping is kinda expensive :/
eBay wrote:Shipping: $0.50 Standard Int'l Shipping
Image

Posted: Mon Nov 14, 2011 8:04 am
by Mr.michael.2468
haha i love that, jut wondering, how do you trigger that valve?

what's this valve rated for?and does it fit standard copper and brass fittings? its all measured in metric so im not really sure... im really interested in it now because its so much cleaner then a big bulky sprinkler valve

Posted: Mon Nov 14, 2011 8:25 am
by Crna Legija
Mr.michael.2468 wrote:haha i love that, jut wondering, how do you trigger that valve?
you need a another valve in the Pilot side to trigger it just like any piston/diaphragm valve.
Mr.michael.2468 wrote:what's this valve rated for?
0-0.8 kgf/cm2
Mr.michael.2468 wrote:does it fit standard copper and brass fittings


sure does. if you live in a sane country

Posted: Mon Nov 14, 2011 8:45 am
by Mr.michael.2468
umm i looked up a unit converter, it only handles 11.35 psi... and is there like a page on how these work? i guess i'm not really understanding how this thing is functioning in the first place.

Posted: Mon Nov 14, 2011 8:57 am
by AircannonSweden
jackssmirkingrevenge wrote:
AircannonSweden wrote:Yes i want a QEV but i live i Sweden so...naaaa,the shipping is kinda expensive :/
eBay wrote:Shipping: $0.50 Standard Int'l Shipping
Image
Ohhh i didn't know the shipping was so little :o

Posted: Mon Nov 14, 2011 9:02 am
by jackssmirkingrevenge
Mr.michael.2468 wrote:umm i looked up a unit converter, it only handles 11.35 psi... and is there like a page on how these work? i guess i'm not really understanding how this thing is functioning in the first place.
Must be a typo, that sort of valve should handle at least 300 psi comfortably without failure.

I'm thinking I should buy a couple to try them out for myself.

Posted: Mon Nov 14, 2011 9:06 am
by Mr.michael.2468
sounds good, and i looked at the picture again and noticed the hole on top for piloting it, that makes more sense lol so is do these valves have a high flow rate then a sprinkler about the same diameter? and do the close up real fast for say, semi auto fire off a high pressure air tank (propane tank)?

oh and you can get them in bigger diameter the last number on the name denotes a size, this one has a smaller input/output hole then the other, im not sure which is which but you get the idea

Posted: Mon Nov 14, 2011 9:29 am
by mobile chernobyl
Here's a 3/4" QEV for $8 shipped! Great find JSR - this guy has a stock pile of relatively cheap pneumatic DCV stuff!

http://www.ebay.com/itm/Black-Gold-Tone ... 3f0f673e72

Posted: Mon Nov 14, 2011 5:29 pm
by microman171
Are you not at all worried about the 11PSI rating on the valve..?

There are other QEV on eBay, but to get one with a useable rating you have to pay more. They don't come in that awesome black package either...

@AircannonSweeden: You could make a semi auto gun with a sodastream tank. Using a QEV and a 3 way valve, you can have the sodastream bottle empty into another chamber on one stroke, and then pilot the QEV on the other. Been done before, but I think it's pretty cool...

Posted: Mon Nov 14, 2011 5:32 pm
by jackssmirkingrevenge
microman171 wrote:Are you not at all worried about the 11PSI rating on the valve..
A plastic soda bottle will happily take 100 psi without coming close to failing, I find it very hard to believe that an all metal QEV will fail above 11 psi ;)

Posted: Wed Nov 16, 2011 1:49 am
by cacob_jlarke
what is the the thread size on an australian soda stream tank? is it 3/8"