1. Used on the liquid piping and air conditioning unit
2.Equipped with moisture indicator
3.with perfect sealing performance

1.1. Used on the liquid piping and air conditioning unit to indicate the flow condition of the refrigerant,water content of the refirgerant and lubricant oil flow condition of the oil return piping on the oil seperator
2.Equipped with  moisture indicator which will change color to indicate the water content in the refrigerant
3.with perfect sealing performance

4.explosion-proof press fit and the viewing glass is clear and safety