hey guys just need a quick response here, i found this on ebay.
apparently its half inch.
http://cgi.ebay.com.au/Valve-Solenoid-t ... 3:1|294:50
the gun will be all metal galvanized steel pipe etc.
how would this compare to a 3/4 inch hot glue piston valve piloted by a 1/2 ball valve?
1000 psi solenoid valve vs a 3/4 hot glue piston valve.
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inonickname
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depending on type, it may have very low flow. I'm completely unsure though.
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POLAND_SPUD
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seems relatively cheap for its size and rating but I suspect that it's flow must be considerably smaller than that of a simple 3/4" piston valve (lol I know that's a vague comment)...
so if you want to use it as the main valve you could get good optimal flow for a 10mm barrel or smaller...
for a pilot valve it's too expensive (you can find cheaper and smaller valves that will do the job - but overall solenoid diagraphm valves are no good as pilot valves - especially when compared with spool valves)
besides... I've seen better deals... for example a new 1/2" spool valve for ~10$
getting a spool valve seems like a much better idea as you can combine them with piston valves for filling/piloting... or use as the main valve... teh only problem is that most of them are rated to 10 - 15 bar
so if you want to use it as the main valve you could get good optimal flow for a 10mm barrel or smaller...
for a pilot valve it's too expensive (you can find cheaper and smaller valves that will do the job - but overall solenoid diagraphm valves are no good as pilot valves - especially when compared with spool valves)
besides... I've seen better deals... for example a new 1/2" spool valve for ~10$
getting a spool valve seems like a much better idea as you can combine them with piston valves for filling/piloting... or use as the main valve... teh only problem is that most of them are rated to 10 - 15 bar
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joepage2008x2
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I made a homemade solenoid valve, a little different to the commercial ones.
Mine used a rod that pushes against a seal using a heavy spring, a huge surge of power using capaitors is sent through the coil and lets a short burst of air out. The commericial ones are basically just diaphragm valves just with a solenoid that releases to pocket of air beneath the diaphragm.
I tested mine up to 400psi before the pump broke, i started making one suitable for up to 800psi, but i might make a solenoid valve just like the commercial ones, there easy - plus i have about 130 sheets of 5" by 5" 1.5mm neoprene rubber to use for the diaphragms.
I might be able to sell diaphragm valves in the future rated up to 1000psi, may not be cheap as i have to cast some parts for them, inlet/oulet up to 2".
Mine used a rod that pushes against a seal using a heavy spring, a huge surge of power using capaitors is sent through the coil and lets a short burst of air out. The commericial ones are basically just diaphragm valves just with a solenoid that releases to pocket of air beneath the diaphragm.
I tested mine up to 400psi before the pump broke, i started making one suitable for up to 800psi, but i might make a solenoid valve just like the commercial ones, there easy - plus i have about 130 sheets of 5" by 5" 1.5mm neoprene rubber to use for the diaphragms.
I might be able to sell diaphragm valves in the future rated up to 1000psi, may not be cheap as i have to cast some parts for them, inlet/oulet up to 2".
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Brian the brain
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1.5mm neoprene
rated up to 1000psi
up to 2".
putting 1000 psi on a surface with 2" diameter means you better know what you're doing...
The walls need to be VERY thick, but then again..you're not going to hold a cannon like that when it fires anyway...
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Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!
Can't ask for a better compliment!!
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!
Can't ask for a better compliment!!
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joepage2008x2
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Well i dont make cannons anymore because they are illegal in the uk, so i stick to airsoft or other things.
I started making a valve but mesed it up so i cant really be bothered at the moment but if i make one over a 0.5" inlet/outlet then i will cast the whole thing from brass.
If i did make a cannon then its hole construction would be metal, i dont trust plastic at any pressure, if the seal was to blow then it would shoot the projectile not explode. With it being made from atleast 8mm of cast brass i think it should be pretty safe.
the only problem will be the diaphragm, it will have a steel disc behind it otherwise it would blow at about 80psi, but with the inmense pressure pushing down i think that the neoprene rubber may be too soft and get sheared.
Holding anything pressurised is risky and i would not hold the cannon, but if i were to sell the valve i know that a lot of idiots would.
I started making a valve but mesed it up so i cant really be bothered at the moment but if i make one over a 0.5" inlet/outlet then i will cast the whole thing from brass.
If i did make a cannon then its hole construction would be metal, i dont trust plastic at any pressure, if the seal was to blow then it would shoot the projectile not explode. With it being made from atleast 8mm of cast brass i think it should be pretty safe.
the only problem will be the diaphragm, it will have a steel disc behind it otherwise it would blow at about 80psi, but with the inmense pressure pushing down i think that the neoprene rubber may be too soft and get sheared.
Holding anything pressurised is risky and i would not hold the cannon, but if i were to sell the valve i know that a lot of idiots would.