OK, I think I found the solution which is this piece:
I hope all my size guess would come correct.
With SCUBA there is a hose involved and valve-y stuff in the end.
1 Like
[quote="bitherder_57, post:81, topic:1170966, full:true"]
I don’t remember if you are still intending to use a compressor or just have your tank refilled.[/quote]
Yes, I'm going without compressor and just refill the tank with CO2 and that's more than enough for diploma project showcase.
Also I don’t know what pressure range you have for your relief valve (SL). This information is needed to determine how you should plumb up your system.
I found the technical rating for this device:
The tank max pressure is 800 psi !!! OMG I think I made a mistake ! The students already ordered the parts.
I didn't know it would be this weak.
You should be okay. The facility that fills the tank will have safeguards against overfilling (over pressure) the tank (hopefully). You should use the relief on the low pressure side of the regulator. This will provide protection in case the regulator gets bumped to a higher pressure than your system can handle.
Be aware that some relief devices are position sensitive so mount it in the correct orientation if required.
1 Like
Thank you so much man.
I'm now less worried than yesterday 
Another thing to be aware of is to keep your tank away from heat. That can cause a significant increase in pressure.
Also, a rapid discharge from the bottle can cause the CO2 to freeze and you will lose all pressure. I doubt this will happen to you at room temperatures. I have seen it occur in a multi thousand gallon tank when it was very cold outside. If it does happen, all you can do is seal off the tank and let it warm up. The CO2 will then melt into the liquid that it is in the tank.
1 Like
The regulator doesn't let the tank contents out in a total pressure drop. But why not compressed air instead of CO2?
1 Like
The guy in the video in #49 said CO2 can provide much more repetitions than compressed air.
No, it's just for project showcase, the locations are college showroom and projects laboratory. All air conditioned. Not used for real life application.
I think I'll be using it just like the guy in video #49. Just test repetitions.
The actuator itself is a small one, won't use much pressure to drive it.
Got you 
This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.