jaap

I was wondering if anyone has first hand experiemce of this scenario:

Take a reglator with a fixt IP on the first stage, say 3 bar. A normal second stage is fitted to it.

Would it flood if it was taken to say 60m depth? The regulator is not used at depth but it is pressurized.

I realise that the water pressure is much higher than the IP so there is a strong chance it will. If it floods how far would the water probably go. All the way into the LP-compartment or just some distance up the hose? Impossible to answer I guess...

Anyway, does anyone know if there is any arrangement that has a somtimes lower than ambient IP and a risk of flooding and some means to protect the regulator from flooding (like a non return valve)?


And now the follow up question:
Does anyone know if the O2-regulators on the "constant"-pO2 SCR are protected from flooding in any way? Like by having a sturdy non return valve fitted? Since the gas goes into the loop I would guess that some system that prevents (humid) gas or water (if flooded) going the wrong way into the regulator is perhaps not strictly necessary.

Examples of "constant"-pO2 SCR are Dräger SM1 and Siva+ (I believe).