Pack West 2 piston Servo Filler PackWest model 2BPF-Q-RF-SRVO-LR piston filler serial 1542 . 2 Piston filling with Liter sized pistons with Left to Right flow c0nveyor with pin indexing, and pneumatic shut off 1/2 nozzles . Allen Bradley Servo Drive and piston control with full Stainless Enclosure and spare parts kit.