Carbon Air Tank?

[oldsparky]

I have never seen an air tank and valve assembly taken apart. Does the valve have any type of pickup tube? Or does a valve just screw into the neck of the bottle? Reason I ask is could a person turn a tank upside down and crack the valve blowing moisture out? 





thanks, 

 

[tracker1955]

There is a tube on scba valves but it can be removed by degassing and removing the valve.

 

[Ezana4CE]

Dunno much about valve assemblies. I take mine to a professional to be filled, but there shouldn’t be moisture inside of an HPA/SCUBA tank. Compressors used to fill these tanks have filters to capture and/or bleed out moisture so that they fill tanks with dry compressed air. I think more important questions are, where did the moisture inside of the tank come from? And, how can I prevent this from reoccurring?

 

[oldsparky]

I have good filtration on my Alkin compressor. But was just wondering how tanks are put together

 

[cworkman74]

No pickup tube on the few I've had apart. I wouldn't expect one either, as I'm not sure what role it would play in a HPA tank.

 

[Ezana4CE]

I have good filtration on my Alkin compressor. But was just wondering how tanks are put together

I see. I thought there may have been another, more serious issue.

 

[Ezana4CE]

I have never seen an air tank and valve assembly taken apart. Does the valve have any type of pickup tube? Or does a valve just screw into the neck of the bottle? Reason I ask is could a person turn a tank upside down and crack the valve blowing moisture out? 





thanks,

@oldsparky I found this link with pictures of an actual valve assembly taken apart. It also has diagrams/schematics of valve assemblies. https://scubaengineer.com/valve_parts.htm

Hope this helps some. 

 

[biohazardman]

None of the Jubilee type valves for our PCP tanks that I have taken off had the pick up tubes on them. But I have seen a lot of diagrams and pics and a few do have actually have them. The Scuba valves are another story and usually will have the tube.

 

[steve-l]

The purpose of that tube is to prevent accumulated water being breathed. It serves no other purpose, but it does prevent draining any water, if there were to be some. In our application they should be removed. I believe they are threaded 1/16 NPT and simply unscrew.. Those tank valves are not installed very tight They seal via O ring. If you suspect water in the bottle, drain all the air and remove the valve and look.

 

[oldsparky]

Thanks for those that gave answers. After reading posts of guys worried about not having good filteration. I thought a better than nothing thing they could do is turn their bottle upside down and bleed a small amount of air in hopes of purging. I know it won’t replace a filter. I have read my air and the dew point is very low with my filters 

 

[18.13]

 

[18.13]

You can pull it out with a pair of pliers