10 p.s.i.a

20 p.s.i.a

30 p.s.i.a

40 p.s.i.a

1/4" - 13 ACME

1/2" - 16 ACME

3/8" - 15 ACME

5/16" - 14 ACME

Increases quantity of refrigerant charge

Decreases quantity of refrigerant charge

Avoids cross contamination of refrigerants

Improves performance of car air conditioners

Minimise air pollution

Reduce global warming

Increase water pollution

Increase ozone depletion

Selector switch and resistors

Thermostat and return-air sensor

Ambient and cabinet temperature

Increase or decrease refrigerant flow