Chevrolet ranger rt Owner's Manual page 104

HOWTO: Propane System
101
Propane relief valve
Sending unit for propane level indicator. Propane relief valve
There is also a needle gauge you can
observe directly on the tank here which
may be more accurate than the indicator
lights inside.
Under no circumstances should anyone fill the tank to more than 80% capacity; doing so can cause liquid propane to flow into
the regulators. If this happens the regulators will have to be replaced. The relief valve with the blue plastic cover will
automatically vent propane if the tank is overfilled or overheats. This is not a user-serviceable item; never attempt to remove
the cover, test, or otherwise interfere with the operation of this valve. Sometimes an overfilled tank will not start venting until
the temperature rises. If this valve should open, it is best to remove all sources of ignition and expeditiously leave the area
until propane odor is no longer detectable. Venting unburned propane is a slightly more advantageous situation than a tank
explosion, which is what this valve is designed to prevent.
© 2014 by Roadtrek, Inc.