4 heads. Piston doser 10 - 50 ml for hot processed cheese to be mounted on top of a filling machine. Distance between pistons now : 10 cm. Agitator in hopper to keep hot product moving and prevent sticking to side. Double jacketed hopper with electric heating element for heating the jacket. Cleaning in cip possible. Own control panel with touch screen panel. Total dimensions: 260 x 120 x 240 cm.