Excellent stepless adjusting mechine; High accuracy and repeatability over the widest range of flow; Superior accuracy at constant flow; Low maintenance, no metal-to-metal contact in measuring chamber, Long life service; Low pressure loss, a true gravity flow meter; Accuracy regardless of pressure fluctuations, temperature variation, viscosity; Choice of aluminum, cast iron, brass and stainless steel materials of construction. Industries Automotive; Adhesives; Agriculture; Asphalt ; Aviation fueling ; Animal feeds; Beverage; Cosmetics ; Chemical processing; Concrete Add mixtures; Dairy; Liquid fertilizers; Food processing ; Fuel oil delivery; General industrial; Hydrocarbon processing; Liquefied gases; Lube oils; Marine ; Paint and varnish ; Petroleum marketing ; Petroleum production ; Pharmaceutical; Printing ink; Pulp &paper; Refining commercial Solvents; Recycling Railroad ; Textile. Technical Specification: Model Flow Rate Diameter Accuracy Volume Per Revolution M-40-1 25-250L/min 40mm / 1" ?.2% 0.309L M-50-1 50-500L/min 50mm / 2 " ?.2% 0.681L M-80-1 100-1000L/min 80mm / 3 " ?.2% 1.839L