E 420 (210.072) V8-4.2L (119.985) (1997)
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Refueling Control Valve: Description and Operation
Pressure Relief Valve, Function
Pressure Relief Valve, Function
The diaphragm lifts off at a pressure of approx. 60 to 90 mbar. The fuel overflow line to atmosphere opens. Air is admitted to the diaphragm chamber.
