
84
Cap Tube or Expansion Valve
FUNCTION OF THE CAP TUBE OR EXPANSION
VALVE
The cap tube or the expansion valve controls the
refrigerant flow. Both controls allow the reduction of
liquid refrigerant from high pressure to its evaporating
pressure. The expansion valve is better suited for
varying temperature conditions.
FAILURE OF THE CAP TUBE OR EXPANSION
VALVE
A defective expansion valve or cap tube will not
properly regulate the flow of refrigerant.
Compressor
Condenser
Water Bath
Receiver
STH13_Tech.book Page 84 Wednesday, September 15, 2010 3:20 PM