Refrigerant Circuit: RESTRICTOR

WARNING: This page is about a different car, the 2010 Volkswagen Passat and 2009 Volkswagen Passat. However, it is still accessible from the selected car via links, so may be relevant.

The restrictor creates a constriction. This restriction reduces the flow and creates high and low pressure sides in the refrigerant circuit. Before the restrictor the refrigerant which is under a higher pressure is warm. After the restrictor the refrigerant which is under a low pressure is cold. Before the restriction there is a strainer for contaminants and after the restriction there is a strainer, to atomize the refrigerant before it reaches the evaporator.

Fig 1: Identifying Restrictor

Courtesy of VOLKSWAGEN UNITED STATES, INC.

NOTE:

Arrow -A- on restrictor points to evaporator.

Replace after each opening of the circuit.

Note different versions.

Refer to [For engine(s) BPY,BLV,CCTA,CBFA] Description and Operation .