J valve - just to be sure

[deep_ocean]

I'm about to buy a tank with a J valve. I understand, that if you leave the lever in down position, it'll work like a K valve. Am I right? Is that (the reserve shut off) the only difference between those two? Is there any difference in servicing them etc.?
I'm pretty sure about what the J valve is, but curious about the servicing part.

Thanks in advance

safe diving.

deep_ocean

 

[Boogie711]

If the lever is down, it acts just like a K valve. No worries there.

I couldn't talk about servicing, etc. I would just buy a new valve - you can get a new valve for between $25 and $40 without any problems.

 

[deep_ocean]

You'd buy a new valve just because it is J valve, or if it needed servicing?

Thanks,

deep_ocean

 

[Walter]

There's no reason to replace a J valve. I have 3.