Sun ECK FLAG Manual De Instrucciones página 64

 Orifice tube system: a system that uses a FIXED ORIFICE TUBE valve and an
aluminum accumulator assembled between the evaporator outlet and the compressor
suction line, the accumulator capacity is about 0,5/1 liter (depends on the model)
Compressor
INSTRUCTIONS MANUAL
Evaporator
Low pressure
liquid
Orifice
Low pressure
tube
switch
High
Pressure
gas
Condensor
-63-
Low
Pressure
gas
Accumulator
drier
High pressure
liquid