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Help finding a valve for my airgun

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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Help finding a valve for my airgun

Unread postAuthor: northbank1 » Sun Jan 20, 2019 8:08 pm

Hello I want to make a airgun that uses a solenoid valve. I have looked for an hour but I can't find a valve that will fit my needs.
I need a valve that can withstand 300 bar, open quickly, and run off of 12 volts. Thanks for helping me out I am a huge noob when it comes to this stuff but I really want to make a powerful airgun!
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Re: Help finding a valve for my airgun

Unread postAuthor: hectmarr » Tue Jan 22, 2019 9:38 pm

These support 200 bar. You have to investigate the specific characteristics of each model.
http://www.directindustry.es/prod/jaksa ... 14935.html
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Re: Help finding a valve for my airgun

Unread postAuthor: Cthulhu » Wed Jan 23, 2019 1:30 am

Solenoid valves aren't the best option for that much pressure, especially unmodified ones.
A QEV valve (look them up on amazon) can usually hold much more pressure than they're rated for (but be careful either way) and open extremely quickly.
Better yet would be to make your own piston valve, which would open quickly and hold plenty of pressure.

On a side note, do you happen to be the same northbank as the youtube channel?
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Re: Help finding a valve for my airgun

Unread postAuthor: keks2033 » Fri Jan 25, 2019 2:06 pm

northbank1 wrote:Hello I want to make a airgun that uses a solenoid valve. I have looked for an hour but I can't find a valve that will fit my needs.
I need a valve that can withstand 300 bar, open quickly, and run off of 12 volts. Thanks for helping me out I am a huge noob when it comes to this stuff but I really want to make a powerful airgun!

post386119.html#p386119 You need a valve of this type. It opens easily at high pressure and will provide sufficient power. But it takes a very long time to set up.
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Re: Help finding a valve for my airgun

Unread postAuthor: jackssmirkingrevenge » Sun Jan 27, 2019 12:09 pm

Cthulhu wrote:Solenoid valves aren't the best option for that much pressure, especially unmodified ones.


Seconded, if you gave us more specifics of what you're trying to achieve and what your budget and skill level is you'll get better advice.
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Re: Help finding a valve for my airgun

Unread postAuthor: hectmarr » Sun Jan 27, 2019 7:15 pm

Cthulhu wrote:Solenoid valves aren't the best option for that much pressure, especially unmodified ones.
A QEV valve (look them up on amazon) can usually hold much more pressure than they're rated for (but be careful either way) and open extremely quickly.
Better yet would be to make your own piston valve, which would open quickly and hold plenty of pressure.

On a side note, do you happen to be the same northbank as the youtube channel?

Will it be able to withstand the design pressure? or there is some other reason not to use them ... I ask because I considered getting one of these to use it with a bottle of compressed air, and I have never had it in my hands nor have I tried one of these :?
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Re: Help finding a valve for my airgun

Unread postAuthor: jackssmirkingrevenge » Mon Jan 28, 2019 8:32 am

hectmarr wrote:Will it be able to withstand the design pressure? or there is some other reason not to use them ... I ask because I considered getting one of these to use it with a bottle of compressed air, and I have never had it in my hands nor have I tried one of these :?


What we call "eBay QEVs" are pretty tough, some members have used them at pressures of up to 600 psi. Something to do at your own risk of course but it appears they have a pretty high safety factor above their recommended working pressure.
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Re: Help finding a valve for my airgun

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Re: Help finding a valve for my airgun

Unread postAuthor: farcticox1 » Thu Jan 31, 2019 5:10 am

300bar :shock: :o

I found some valves but they are crazy expensive :(

http://www.solenoid-valve.world/selecti ... ure/300bar

Would a hydraulic valve work with air :idea: have to keep it well oiled, probably get some dieseling :twisted:
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Re: Help finding a valve for my airgun

Unread postAuthor: jackssmirkingrevenge » Mon Feb 04, 2019 11:53 am

farcticox1 wrote:Would a hydraulic valve work with air


I've had hydraulic tubing leak at 4500 psi when used as part of a high pressure fill setup, it depends on the seal material since it's literally a case of air molecules being smaller. This applies to gases too, a system that is airtight with CO2 for example might leak with Helium.
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