cylinder boot question

[Zef]

A fellow diver in one of the clubs I am in asked me what the nub circled in red is on my cylinder boot:

I told him I was not 100% sure but thought it was to hold the rod of a J-valve.

Is that correct or is it for something else?

-Z

 

[Rusty Shackleford]

That's to secure the rod for a J-Valve.

 

[JMBL]

Yeah dead right, a souvenir from the past.

 

[Rusty Shackleford]

Some organizations still use J-Valves. OSHA allows it as a redundant air source.

There are modern J-Valves, you can even get a DIN one.

 

[JMBL]

Some organizations still use J-Valves. OSHA allows it as a redundant air source.

There are modern J-Valves, you can even get a DIN one.

No kidding ? Here in France, those valves have been outdated for 2 decades at least and I have seen them only on vintage rigs. Would you care to be more specific, please ? I'd love to learn about that. Thank you.

 

[Rusty Shackleford]

J-valve and DIN connector

 

[JMBL]

Thanks again. Read it and I'm still puzzled : my experience with those valves was bad, never worked properly, still in professional context, I'm supposed equipment is better maintained.