Paladin
Contributor
Could anyone tell me if an Aqualung Calypso J can handle the 3000 psi from an aluminum 80?
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Aqualung Calypso J
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What's a Calypso J? Single- or two-hose? What's the pressure rating stamped on the yoke?
The Aqualung Calypsos I know about are single-hose two-stage regs, but I'm not familiar with the J. Or maybe I am and just don't know it...
The Aqualung Calypsos I know about are single-hose two-stage regs, but I'm not familiar with the J. Or maybe I am and just don't know it...
OP
Paladin
Contributor
The Calypso J is a Calypso regulator with a J valve (reserve) built into it. I don't know what, if anything, is stamped on the yoke. I found this for sale online at an estate sale and the seller knows nothing about it. I want to know a bit about it before I buy.
It should be fine (had one of them a long time ago).. it was made when 3,000 psi aluminum tanks were the most common tank.
Wonder if you can get all the parts for it today? Interesting.
Wonder if you can get all the parts for it today? Interesting.
OP
Paladin
Contributor
Thanks, Puffer.
Below are diagrams for the Calypso J and the Calypso III.
This line of Calypso regulator came out in the 70’s. The early ones (Calypso III type) had the tire wheel as shown in the diagram. Those will handle 3000 psi, but the yoke was not as heavy as the later ones (Calypso IV) with the big knob yoke similar to many modern yoke knobs. The Calypso III came out when most tanks were 2475 psi (2250 + 10%).
This line of Calypso regulators used a balanced flow through piston design. The HP seat for them is not available and NOS are becoming hard to find. It is sometimes possible to resurface the original seat.
This were very good regulators, but wit the lack of replacement seats they will eventually become hard to service.
You can get the repair manual for the earlier Calypso J and all US Divers regulators (pre1971) under this link:
U.S. Divers Repair Manual on CD [USD Manual on CD] - $10.00 : Vintage Double Hose!, Your online source for all things related to vintage diving
Here is the same first stage without the reserve valve mechanism. The reserve could be added.
This line of Calypso regulator came out in the 70’s. The early ones (Calypso III type) had the tire wheel as shown in the diagram. Those will handle 3000 psi, but the yoke was not as heavy as the later ones (Calypso IV) with the big knob yoke similar to many modern yoke knobs. The Calypso III came out when most tanks were 2475 psi (2250 + 10%).
This line of Calypso regulators used a balanced flow through piston design. The HP seat for them is not available and NOS are becoming hard to find. It is sometimes possible to resurface the original seat.
This were very good regulators, but wit the lack of replacement seats they will eventually become hard to service.
You can get the repair manual for the earlier Calypso J and all US Divers regulators (pre1971) under this link:
U.S. Divers Repair Manual on CD [USD Manual on CD] - $10.00 : Vintage Double Hose!, Your online source for all things related to vintage diving
Here is the same first stage without the reserve valve mechanism. The reserve could be added.
Luis, Thanks for bringing back memories. I got mine somewhere around 73.
Sadly, the seat (at least from the picture) does not look like something one could fabricate easily
Many small seats can be made by getting a sheet of seat material and using a hole punch of the correct size to cut it out...but this one looks fairly thick, with layers.
Wish I remembered what it looked like ... darn - some more information gone forever.
I got it right around the time we (our dive club in Panama) put in a 3,000 psi compressor and got 3,000 psi Al tanks
Sadly, the seat (at least from the picture) does not look like something one could fabricate easily
Many small seats can be made by getting a sheet of seat material and using a hole punch of the correct size to cut it out...but this one looks fairly thick, with layers.
Wish I remembered what it looked like ... darn - some more information gone forever.
I got it right around the time we (our dive club in Panama) put in a 3,000 psi compressor and got 3,000 psi Al tanks
Seems like I remember Sonanda was working on replacement seats, might want to check with him...although I suspect he will show up here.
miguelation
Registered
I have been using the Calypso VI for about 30 years now, and I have been flipping the HP seat over every year. For some reason, the material gets flat inside the seat after so many dives (2 a week in Florida) and is ready to be flipped for another year, by then , the marks from the piston, are all gone.
LeadTurn_SD
Contributor
1+ for what has already been said.
The Calypso J was my first reg, back in 1976. I remember mine having a more conventional yoke knob I believe (looked like modern ones, as on the Conshelf). It would handle 3,000 lbs. It was a nice reg... sadly lost during a move when I was in college, sigh.
Best wishes.
The Calypso J was my first reg, back in 1976. I remember mine having a more conventional yoke knob I believe (looked like modern ones, as on the Conshelf). It would handle 3,000 lbs. It was a nice reg... sadly lost during a move when I was in college, sigh.
Best wishes.
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