Answer / baskaran.r

it is the expansion valve separates the high pressure and
low pressure in the system. the expansion valve is very
critical in an a/c system. this is the one which controls
the amount of flow of liquid freon to the low pressure side
permitting to expand and cool the air. in smaller air
conditioners the expansion valves are not used but capillary
tube is inserted to control the the flow of liquid freon

Answer / gopi

if there is no expansion valve then there is no refrigerating effect. then there is no use of ac i.e., no cooling effect

Answer / benchalli/nagaraj

There is no cooling,without expension valve AC will not
work.

Answer / kumar

if there is no expansion valve in ac system, it is very
difficult to compress the expanded refrigerant in
compressor. so that the load and temperature of the
compressor and condenser may increases.

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