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AHF - Gravity Filler (Hot Fill) for P...

SACMI AHF (Alfa Hotfill Finishing Handling)

Gravity Filler (Hot Fill) for PET Bottles

The Sacmi AHF machine is ideal for the hot filling of sensitive products in PET bottles. The design of the filling valves allows the treatment of both clear products and products with fibres and pulps. Ease of use, reliability and price competitiveness are some of the main characteristics of the new A series fillers.

How it works

Bottles are handled by the neck, so that during the production of containers with different size, but same finish, change over time is minimized. Filling technology is of gravity type, with electro-pneumatic control: the filling in each valve is enabled directly when the same valve leans onto the bottle, but the product flow is time-controlled through an electro-pneumatic valve. The filling level is defined by valve position inside the bottle – such position is mechanically set through appropriate spacers (specific spacer for each size). Each time the machine halts, product recirculation is activated, in order to keep the temperature in the filling valve constant. Recirculation concerns only the product in the valve and not the product in the bottle. The filling time is configured on the operator panel: it can be modified according to the size and the requirements of the product being filled.


The product is delivered through tubes, in order to achieve machine highest washability on the rotating carousel. The only tanks have been installed and fixed on the ground, outside the carousel, and they respectively receive the product from the pasteurization system and activate the recirculation of the product being delivered from the filler to the pasteurizer. These tanks are washed through spray ball system. In the filling valves the delivery is in communication with the return, therefore machine inner circuit can be washed even without the use of dummy bottles. The part at the valves end is washed with outer fixed nozzles. The design of the structure has been developed also in order to reduce as much as possible the amount of product lost at production start and end. The guards have been installed on the floor and manufactured in polycarbonate and stainless steel.


Sacmi AHF has been designed in order to obtain a minimized and facilitated maintenance. These are some of the solutions employed:

  • The product distributor has been equipped with mechanical seal, thus eliminating the higher wear of the slipping gaskets
  • The filling valve can be taken off from the carousel in less than 30 seconds
  • No custom electronic component nor electrical panel for filling management on the rotating part.

See the picture

Technical features

Filling system By gravity; mechanical – electro-pneumatic
Products which can be filled juices, nectars, isotonics, teas
Maximum solid contents (weight) 10%
Maximum dimension of pulps 2.5 mm
Maximum length of fibres 8 mm
Filling precision (maximum σ) 1 mm
Waste during production due to filling 0.01%
Size change over time (with the same neck) 20 minutes
Materials in contact with the product AISI 316L
Materials of structural parts AISI 304 and carbon steel
Gaskets in contact with the product compatible with the contact with food according to the European standards and FDA

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