LMI Pumps

LMI (a brand of Milton Roy, part of Ingersoll Rand) is a leading manufacturer of chemical metering pumps headquartered in the United States. The company specializes in precision dosing equipment for water treatment, industrial processing, and municipal applications. LMI's flagship product line is the Roytronic EXCEL AD Series, a range of solenoid-driven electronic metering pumps delivering flows from 0.002 to 2.0 GPH at pressures up to 250 psi, featuring a 1000:1 turndown ratio, FastPrime and AutoPrime liquid end options, and NEMA 4X/IP-65 enclosures. The PD Series represents LMI's newest solenoid pump platform, offering Intelligent Drive Control electronics that dynamically compensate for temperature and voltage, STAYPRIME degassing technology, and both manual and enhanced control models with graphical displays. For higher-output applications, the Series G motor-driven metering pumps deliver flows from 0.12 to 312 GPH at pressures up to 175 psi, with mechanically actuated PTFE diaphragms and ±1% steady-state accuracy. Series G is available in SD (up to 115 GPH) and SG (up to 300+ GPH) configurations. All LMI pumps carry NSF/ANSI 61 and 372 certifications, making them suitable for potable water applications across boiler feed, cooling tower, pH control, disinfection, and wastewater treatment.