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Has anyone ever heard of a pulse 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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Re: Has anyone ever heard of a pulse valve?

Unread postAuthor: D_Hall » Sat Apr 04, 2009 12:02 pm

tomthebomb137 wrote:so i was talking to someone who had a pretty serious air cannon rig and he was using a "pulse valve" which i guess has 2 diaphragms and supposivley opens absurdly fast, unfortunatly, googling them failed to turn up any helpful info. Anyone know about these/where to buy them?


A pulse valve and a QEV are the same thing. The only real difference is that different industries use different terminologies.

For what it's worth, "pulse valve" will be used in industries where dust collection systems are important. They use them to send a pulse of air down some pipes or whatever to blow dust out of the lines.

Meanwhile, a "QEV" is more likely to be found on something like traditional pneumatic equipment as a safety valve (ie, something to dump ALL system pressure).

As for the 2 diaphrams, that's no doubt just a reference to a cascading system for a largish QEV/pulse valve.
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Unread postAuthor: roboman » Sat Apr 04, 2009 12:23 pm

jackssmirkingrevenge wrote:One of these with a pop-off pilot should be just the ticket for a golfball auto, *hint hint Dewey-1 hint hint* :D


You would need quite a large chamber for that...

Definitely would be interesting if someone built one, though!
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Unread postAuthor: dewey-1 » Sat Apr 04, 2009 1:40 pm

jackssmirkingrevenge wrote:One of these with a pop-off pilot should be just the ticket for a golfball auto, *hint hint Dewey-1 hint hint* :D


JSR;
That thought had crossed my mind already last summer!

I guess you are hinting at mounting this directly on my 55 gallon compressor for auto/semi-auto operation?

I believe it was socoj2 that had an exotic setup using a couple of these valves.

Both myself and D_Hall have launchers in process.
Dewey-1's:

http://www.spudfiles.com/forums/asco-ne ... 17764.html

D-Hall's:

http://www.spudfiles.com/forums/interes ... 17574.html

Type in Asco in the search and you will see several launchers using this valve.

sjog's:
http://www.spudfiles.com/forums/500-fps ... 13014.html

The valve is also modeled in Google Sketchup if you would like to use it.
See this posting:
http://www.spudfiles.com/forums/sketchu ... 17755.html

edit: forgot my buddy sjog
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Unread postAuthor: tomthebomb137 » Sat Apr 04, 2009 2:13 pm

thank you very much for clarifing that D-hall
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Unread postAuthor: jackssmirkingrevenge » Sat Apr 04, 2009 7:25 pm

dewey-1 wrote:I guess you are hinting at mounting this directly on my 55 gallon compressor for auto/semi-auto operation?


Asco on a nerf launcher, that's almost sinful ;) with standard parts and simple tee magazine for say 10 golfballs you'd have one very impressive launcher.
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Unread postAuthor: tomthebomb137 » Sat Apr 04, 2009 7:39 pm

sooooooo anyone got an extra one of these things they want to perhaps sell to me/donate to me? :D
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Unread postAuthor: LCTChamp » Sun Apr 05, 2009 12:30 pm

tomthebomb137 wrote:sooooooo anyone got an extra one of these things they want to perhaps sell to me/donate to me? :D


I want one also.
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Unread postAuthor: tomthebomb137 » Sun Apr 05, 2009 3:42 pm

but of course, i asked first :lol:
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