Old First Stage ID Question

[Zef]

Do you have any references for this model? I can’t find anything. Looks like it has a 3000 psi non integrated yoke. And 4 LP ports? No external IP adjustment? And a separate piston chamber. If it is an Aquarius it's a wild departure.

Aquarius service manual attached, but it is for the older version. I also attached a 2004+ Calypso service manual...you will find the critical internal parts are the same, the major differences are the Piston cap was changed so a wrench can be used to open/close the 1st stage instead of a pin spanner, the filter changed, and the inlet fitting/crown retainer was modified.

I believe the main difference between the Aquarius and Claypso of this vintage was just superficial cosmetic stuff.

-Z

 

[scrane]

View attachment 794877

-Z

I think you nailed it in the above pdf

 

[Zef]

Are parts available? I understand aqualung bought them out.

Depending on what you need, many of the parts are the same/interchangeable with those in the current version of the Aqualung Calypso unbalanced piston 1st stage. Check the diagrams and service manuals I posted above.

-Z

 

[ECHIV]

Wow, so much helpful information. You folks are awesome. We just started diving and I am trying to get 3 divers outfitted. Thanks for the advice and help.

 

[ECHIV]

I want to follow up and say thank you. I found an E bay store that had parts kits and an Aqualung shop with a very helpful service tech. It turned out to be a 26 year old Aquarius first and second stage that is still in working condition. He tested the entire regulator and we replaced a couple of hoses. It is rated for 3000 psi and he gave it a clean bill of health. My son is excited to try it out in Costa Rica this fall. Thanks again for your help.