I want to find solenoid valve for gas but I can't.
What I can find was just only valve for liquid.
I need something to possible turning on/off gas flow.
Thanks
P.S
I can't speak English well so that can make you hard to understand what I'm saying.
Plz understand.
Thanks
Clippard makes all sorts of small valves to control gas flow. 12 and 24 volt options:
Or here:
Or EBay...tons of them there.
Hi,
What is the gas?
Thanks.. Tom... 
It also depend on pressure you need.
For small pressure vs atmosphere I use this: https://abra-electronics.com/electromechanical/solenoids/micro-electric-solenoid-air-valve-n-c.html
You also need to determine if you need normally open or close.
Charles
It would help you if you explained what you are trying to do, that will enable us to help you. You say gas, there are a lot of different gasses all with different properties that require different plumbing considerations. Some are explosive and need to have the electronics properly enclosed. How much pressure has an impact on valve selection as does flow rate. Maybe you know the pipe size it is mounted on, we do not have the ability to look at your project so you need to tell us more.
Many solenoids rely on fluid pressure to actually open up, those are generally not suitable for gas. Beware of that if you want to control low pressures.
A Google search for "solenoid for gas" turns up a HUGE number of results... some of the solenoids I have in one of my drawers are also perfectly suitable for gas - they're sold as solenoids for pneumatic applications.
Hi,
The OP has posted 2 threads now and even in the first thread, didn't respond.
Tom...
gilshultz:
It would help you if you explained what you are trying to do, that will enable us to help you. You say gas, there are a lot of different gasses all with different properties that require different plumbing considerations. Some are explosive and need to have the electronics properly enclosed. How much pressure has an impact on valve selection as does flow rate. Maybe you know the pipe size it is mounted on, we do not have the ability to look at your project so you need to tell us more.
First I'm sorry that I'm late for comment.
I'm designing tube that can control buoyancy by injecting gas from air tank.
Pressure that I want is little higher pressure than sorrounding.
Thanks
TomGeorge:
Hi,
The OP has posted 2 threads now and even in the first thread, didn't respond.Tom...
Sorry. I can't understand what are you talking about cause of my english level. And also I'm newbie for Arduino. What is respond, thread and OP?
Hi,
Welcome to the forum.
OP is Original Poster, which is you.
Thread is this posting of messages.
Respond is you replying to questions.
Tom...
PS. What is your native language?
TomGeorge:
Hi,
Welcome to the forum.OP is Original Poster, which is you.
Thread is this posting of messages.
Respond is you replying to questions.Tom...
PS. What is your native language?
Okay I can understand know.
I'm south korean.
There are many many solenoid valves avallable for gases.
Just look for any compressed air equipment suppliers like SMC.
A lot of valves for liquids can be used with gases.
RS components have/had a good selection.
Pressure and composition are key factors.
One of the most reliable I came accross were valves from Burkert. Never had one fail in industrial settings.
As mentioned by WVMarle, high pressure or high volume valves need some extra help to operate and use the gas pressure as well as the solenoid to operate.
These are often refered to as pilot operated valves. Small valves will start to have pilots at about 10-bar pressure.
For very high pressures, say above 100-bar, valves tend to have actuators rather than solenoids.
The only gas I would take special precautions with is hydrogen, as the small molecule will find leaks that other gases don't.
There are also simple pinch valves - pinch a soft tube - for low pressure gases. These are often used in things like blood pressure monitors.
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