Extra Reserve Power for Low-Yield Wells The Flint & Walling 5 GPM Commander Plus stainless steel pump end pairs a 1 HP motor rating with a modest 5 gallon per minute output, giving homeowners on slow-recovery wells extra reserve pressure without overdrawing the aquifer. It is the natural step up when a 1/2 HP or 3/4 HP pump end can no longer hold pressure through peak-demand mornings on a well that produces 5 GPM or less. Stainless Construction Built for Mineral-Heavy Water The pump shell, cable guard, and hex drive shaft are all stainless steel, resisting the pitting and rust that iron-rich or slightly acidic groundwater causes in standard carbon steel pump ends. Noryl impellers and diffusers keep internal wear low even when fine sand passes through the intake screen, and a closed, sintered, lead-free sleeve top bearing with a one-piece motor-to-shaft coupling reduces startup vibration, extending seal life on the matching submersible motor. Specification Value Flow Rate 5 GPM Motor 1 HP Discharge 1-1/4" NPT Housing Material Stainless Steel Well Diameter 4" minimum Impellers Noryl Warranty 1 year limited How to Use Pair with a 1 HP, 4-inch Flint & Walling submersible motor and a matching control box (ordered separately for 3-wire single-phase setups). Confirm the well's recovery rate meets or exceeds 5 GPM before installation to prevent dry-running, and have a licensed pump contractor set the pump below the drawdown level. Ideal for private wells with limited recovery producing up to 5 GPM, where the extra 1 HP reserve smooths out pressure during simultaneous household water use.
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