Milton Roy FR161-144 Controlled Volume Pump with Doerr 0.75 HP 1725 RPM Motor

The Milton Roy FR161-144 is a robust controlled volume metering pump designed for precise fluid dosing in industrial applications such as chemical processing, water treatment, and oil & gas. This model features a mechanically actuated diaphragm for reliable, leak-free operation, delivering a maximum flow rate of 65 gallons per hour at 40 PSI. Paired with a Doerr 0.75 HP electric motor running at 1725 RPM, it provides consistent performance for continuous or intermittent duty cycles. Key benefits include high accuracy in flow control (±1% repeatability), corrosion-resistant construction suitable for harsh environments, and easy maintenance with adjustable stroke length for variable flow. Compared to similar pumps like those from Pulsafeeder or LMI, the Milton Roy offers superior durability and lower total cost of ownership due to its proven design and minimal wear parts. Drawbacks may include higher initial cost and the need for periodic diaphragm replacement in aggressive chemical services. This unit appears used but in good condition, with included instruction manual and spare parts like a conduit cover. Applications range from pH adjustment to additive injection. For detailed specs, refer to Milton Roy datasheets (e.g., official site: https://www.miltonroy.com/products/mroy-series). Model decoding indicates FR series for low-flow, high-precision tasks; exact dimensions estimated from images as precise data unavailable.