PackWest LSN-8 Gallon Piston Filler SS PackWest LSN-8 Gallon Piston filler with 8x gallon Pistons. Serial number 1/2-G-RF-LR-DG-PCT-1891. 8 gall on pistons on separate pumping frame to main filler with 8 shut off nozzles and indexing conveyor and Stainless enclosure with Controls.