Filling of a Piston pack

	Atmospheric	Airless
	Piston positioning is "high " for atmospheric filling Filling of the product is done with the needle Maximum filling up to the neck of the container Simple snapping on of the pump on the barrel	Piston positioning is "low " for atmospheric filling Under vaccum positioning of the barrel : beginning of the filling with opening of the shutter Precise filling up to the neck of the container End of the filling . Closing of the shutter Under vaccum positionment of the barrel : snapping on of the pump and replace of the piston
Functioning

Storage of the bulk :
in the dosage chamber of the pump

Priming on the actuator :
Continuous dispensing of the bulk into the dosage chamber

The depression created inducts the return of the piston

The cream is aspirated and fills the dosage chamber

End of use:
Piston returns to the shoulder of the barrel