Air Brake System

[mbrund]

That should be the check valve that isolates/protects the air bags,
step, and aux air fittings (air chucks in the compartment, etc.)
from the rest of the braking system. If the air pressure falls
below 65 PSI this would isolates those from the air tanks so that if
the leak was in that circuit you would not lose braking.

Michael Brundridge
'92 WB40
Georgetown, TX

--- In WanderlodgeForum@yahoogroups.com, "ejohna2000"
wrote:
>
> Trying to eliminate some leaks. Found 2 things leaking that are on
the
> auxilliary air tank. They are listed as #2 on the schematic and
are
> called Valve,Pressure Protection, 65 PSI MR.
> Any one know what there purpose is?? Elmer in Sebring, 86 PT 38
>