The M25G1-MECH-NP#1 is a Liquid Controls M-25 series positive-displacement (rotary) flowmeter configured for mechanical registration (no pulser) and standard accessories (strainer, air eliminator, printer). It is designed for custody transfer and accurate bulk fueling applications for refined petroleum products and similar liquids. The M-25 construction uses synchronized rotors (no metal-to-metal contact) and a low pressure-drop design so it will operate on gravity feed or pump pressure while delivering long-term, sustained accuracy.