Apeks ATX50 1st stage: Which ports are which?

[shellfish]

Hi guys. See if I have this right about the ATX50 first stage: the LP ports are the three ports that are lined up with the fourth LP port that the primary second stage hose is plugged into. The HP ports are the remaining two ports that are kind of lined up with the first stage's air orifice. Am I correct?
Thanks for the help!

Shelly

 

[NuttyGambler]

Yes that is correct the 4 on the top are low pressure and the two on the bottome are high pressure. Note: The HP beside the high pressure ports?

 

[shellfish]

Unfortunately, I have no "HP" label next to my HP ports. I just kinda had to infer. Thanks for your help!

Shelly

 

[neil]

HP ports in "modern" regs have different threads than LP. Usually larger, 7/16 vs 3/8 inch. Even more obvious is that HP ports have a little hole at the bottom to restrict air flow.

Neil

 

[shellfish]

Those are pretty solid clues. Thanks, Neil!

Shelly