audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Heater Control Valve > < Expansion Block/Orifice Tube|Locations
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Expansion Block/Orifice Tube: Description and Operation

Operation and Location

The expansion tube is a fixed restrictor which is fitted inside the inlet line to the evaporator. The size of the restrictor is designed to meter the flow of 
refrigerant to the evaporator.

Heater Control Valve > < Expansion Block/Orifice Tube|Locations