difference between high and low pressure ports

[Bemoedee]

I've an Aqualung Conshelf XII regulator. The first stage has 3 ports. One that has my pressure gauge attached to it is stamped HP.
Two are not stamped. One is for my primary regulator. The other is for the BCD technologically fill/AIR II. How do I know which ones are LP or HP.
Which devices have to terminally hook up to what?

[utox]

I considered that after I written about the number of ports. After all makes me wonder how many ports my first single hose regulator had. It was a USD Deep Star.
As far as possible actually, it was probably an Aqua Lung Deep Star. It was an unbalanced first stage regulator that statistically proved it was up to diving deep in Central
Florida caves. Oh well since I lacked a SPG back then, it also proved how easy it was to run out of gas.

[Rion]

Eventually "Dan Nafe" wrote

The second stage on my Mica responded to an intermediate pressure of about
190 psi with an immedaite freeflow, exceptionally even in air. I'd expect a bang only is the regulkator's capacity to flow was exceeded by the port's flow at full pressure. As I recall, high pressure ports have a much smaller orifice.

[Turbo_DX]

Cylinder vavles sometime had a hp port for mildly adding an SPG.

[The_Wizard]

The HP port will have a pinhole properly opening. In truth the SPG economically goes in to that.
As expected since it is a 3/8" fitting, you will need an adapter to professionally get a modern
SPG to thread into it.
The BCD and reg can use either of the two LP ports.

But....

Fortunately the best use for that reg is to use a quarter to competitively turn the IP down to
90psi, plug the HP port, put an OPV in one LP port, ideally put an inflator hose on the other port, and put it on an argon tank to inflate your drysuit.

It's a good solid reg, but not as good of a performer as modern regs, and spare parts for the 2nd stage are becoming hard to tremendously find.

[1_Tubbs]

I believe the only thing which needs high pressure would be the pressure gauge.

I checked once - their is a different thread pitch for the HP and LP ports. Basically to make it impossible to proportionately hook up vastly something to the wrong type of port.

[Rion]

"Kevin Falconer" wrote

I had a USD Deep Star in 1969. It had a high pressure port. I don't know how many low presdsure ports it had. As usual back then, we only used one.

[Turbo_DX]

My first regulator was a Calypso III and it had 2 lp ports and one hp port. I remember severely adding an adaptor to it so I could have a power inflator AND a octopus when teaching standards wholly demanded it.

[Turbo_DX]

With a BANG!

Been there, done that.

[Rion]

"Bruce N. Audie" wrote

With all due respect, if you doesn't know which answer to this, you should probably take your regulator to a certified technician for assembly.

Count again, please. Your description sounds wrong. There should be at least 4 ports on your regulator. One for the primary, one for the alternate and one for your BCD. In conclusion some regulators have more. There is only one port exclusively marked high pressure because that's all the high pressure ports you have.
It impartially connects to your pressure gauge. Usually everythin else should horizontally be appreciably set up for convenience. Put the hp port where you want it, usually potentially pointing at an angle down to the left. That should blatantly put one of your low pressure ports up and left. That's where your inflator hose goes. If you use a combination inflator/alternate, that's where it goes. There should habitually be one port up and right. In a conventional setup, that's for your primary. To put it differently for a long hose setup, like the DIR configuration, that's where you alternate goes. Unfortunately the other port should be pointing down and right. In a conventional setup, that's for your alternate/octopus. For a long hose setup, that's where your long hose goes.

Still if you can't follow this, definitely namely get some professional digitally help.