Good evening!
Hello Mog8.
Anton gives detassl & explanations sheet with the regualtor or valves , he sells.
I shall try to get drawings and pass them to you, if this is what you need.
But from now: the bi-membrane regulator is used as a regular one. There no difference in the work itself. Just an extra membrane on top (gas side). This brings an extra barriere in case the membrane between gaz and boiler's pressure tears off.
The difference between a regular shut off valve and an automatic (vanne coupe gaz automatique autonome) is:
The standard one needs an extra gas line to supply the burner until the pre-set pressure is achieved in the boiler (+/- 1/2 bar)
When the pressure is enough , you shut off this extra gas line and the burner is now supplied through the "shut off" valve.
The other one does not need an extra line. You have to hold the "mechanism" until the pressure is reached inside the boiler. When the pressure is enough, it stands by itself.
If the pressure drops. the mechanism is released and cut the gas supply to the burner.
Hope of beeing of some help!

Regards.
