Mythbusters Cannon

[deathbyDWV]

On mythbusters tonight I saw they used a cannon to launch slush drinks. Did any one else?

It reminded me of tech's qdv...

Does anyone know what type of cannon it was?

I was thinking maybe a spool valve...

[twizi]

i think its some type of spool

[metalmeltr]

What was that tank that held the air? It looked like the valve was incorperated into the tank.

[deathbyDWV]

Yeah it looked like a propane tank. That's why I thought spool valve.

[jackssmirkingrevenge]

Found the episode online

Handheld air cannon in the last couple of minutes.

[Heimo]

there are 2 different launchers in that episode...
this one

I have no idea how this one works but is probably works a lot like a QDV

then there is this one


this one uses a solenoid actuated valve, here is a pic of the valve from a different episode where they showed a close up

[Crna Legija]

they used the big red one in another episode to, when they tested if a car going forwards at 80mph and a gun shooting backwards would at 80mph would end up with the round just falling straight down.

[Technician1002]

That type valve is a large QEV used on hoppers to relieve gravel and such that jams and stops flowing. I've seen them used. They are used in the cement and coal industries. The piston in them is shaped like a hockey puck, so the style is a QEV, not a QDV. The cut away view on their site shows the valve housing is in the rear of the tank.

Here is one by Flotec;
http://www.aircannon.org/installations.html
That paticular tank and valve looks like one by Martin Engineering;
http://www.martin-eng.com/products/air- ... ccessories