Double 3-Way Valve

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Postby sgort87 » Sun Mar 12, 2006 3:29 pm

For one of my next projects I need 2 3-way valves for it to work. I would much rather have some kind of double 3-way vavle instead.

This valve should work the same as a normal 3-way but be able to have 2 input lines, 2 resevoir holes, and either one or 2 outlet holes (preferably one).

I would use one 3-way if I could but I cannot mix the 2 lines until final injection. If I did that there could be some serious dangers.

Does anyone know of this type of valve and where I can buy it?
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Postby BC Pneumatics » Sun Mar 12, 2006 3:49 pm

They have valves like you mentioned, I'm sure, but it would probably be cheapeer to use indipendent valves, and mix the propane/air in the chamber itself. (Surely your circuitry could be easily moddified for this?)
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Postby sgort87 » Sun Mar 12, 2006 3:53 pm

Yes, but I am hoping for a cleaner and simpler looking gun. Making it with 2 valves is not hard at all but I wish to reduce clutter where possible.
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Postby Velocity » Sun Mar 12, 2006 4:40 pm

dunno about a double 3-way... I have definitly seen them though (i think)

But if not, heres some good stuff that will definitly help:

http://cgi.ebay.com/Lot-Asco-Skinner-So ... dZViewItem
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Postby sgort87 » Sun Mar 12, 2006 5:37 pm

OH MY GOD! Thank you Rmich. Guys please don't buy those valves. I really need them. Even if i find one of those that I need for this gun that's in design I have much use for these in the auction soon.

Edit: Well it seems there's a guy that has a really high max bid on it. I'm not sure if I want to spend $50 or more on it now even though it is worth $500.
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Postby BC Pneumatics » Sun Mar 12, 2006 6:06 pm

I realize clutter reduction is nice, but you have to wonder if it is cost efficient.
Besides, are you really makeing this thing extremly portable? It apreantly is hooked up to a compressor as it is.
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Postby Spudgunner86 » Sun Mar 12, 2006 6:09 pm

look at the valve list, most of those valves are 120v including the 2 3-way valves, unless you're looking to have an outlet hookup, I would save my money.

I think boogieman might still have some 3way,12v valves left from his revolver, couldn't hurt to ask.
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Postby davidbowie » Sun Mar 12, 2006 6:44 pm

so... propane/oxy?
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Postby Green Villain » Sun Mar 12, 2006 8:12 pm

sgort, do you have a habitat for humanity restore near you? I found 4 asco solenoid valves (3-2 way, and 1-3 way!) at my local store for $1.00 each!
Edit : here's the link for the restore. I believe you can search for a "Store near you".
http://www.habitat.org/env/restores.aspx
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Postby clide » Sun Mar 12, 2006 8:30 pm

http://www.mcmaster.com/nav/enter.asp?pagenum=915

A 4-Way, 3-Position, Closed Center, 5-Port Valve
or 4-Way, 3-Position, Exhaust Center, 5-Port Valve
should work if I understand what you are wanting.

Your inputs would be EA and EB, your reservoirs would be A and B, and your output would be P

In the "closed center" valve you would start out in the center with reservoir B filled from the previous launch, then go to position 3 to outlet B while filling A, then go to position 1 to outlet A and fill B, then go back to center for firing.

In the "exhaust center" valve you would start in the center with both reservoirs filled and then go to position 1 to outlet A, then go to position 3 to outlet B and back to center to fire.
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