purchasing a new old regulator

[snowdog61]

If you are able to get it to your LDS, have them put it on a tank and check the IP for you - I'd be surprised if they charge you for just that (especially if you trained through them).

Basically everything halocline and others said though. If it truly hasn't been dove and is NIB then, yeah, likely it is fine. The IP test will tell a bunch. If it is drifting or leaking out the 2nd (or any other place), then you may as well have it serviced and start fresh knowing exactly what you got.

 

[tbone1004]

@halocline

I personally wouldn't service it, but I would take a few key o-rings out and relube them. It's not the o-ring that I'm worried about, it's the lube that's supposed to be there drying out and then accelerated o-ring wear. I have taken regs that have been sitting for 20 years, hooked them up to a tank, and they still worked, but it gives me a bit of a warm fuzzy to take everything out and relube them. For a new diver that warm fuzzy may be more pronounced