Franklin Electric 4 in 3200 Series Submersible Well Pump - 5-10 GPM, 1/2-1.5 HP

The 3200 Series is designed so that every part of the pump end, cable guard included, falls within the diameter of Franklin Electric’s 4 in submersible motor. That reduced diameter makes it the pump for an encrusted or tight 4 in well.

Its hydraulic stage design is optimized for more water and pressure when the pump is set deep.

• Pump diameter is smaller than a standard 4 in submersible for easier installation in reduced diameter 4 in wells
• Hex rubber bearing and ceramic shaft sleeve allow sand and abrasives to pass through, virtually eliminating shaft wear and upper bearing failures
• Improved hydraulic performance for deeper set depths at all horsepower and flow ratings
• Floating stage design allows for maximum efficiency while minimizing the downthrust load transferred to the motor
• Advanced thermoplastic diffuser and disc with 300 Series stainless steel thrust and eye seal protection for durability and abrasion resistance

Find your horsepower in the row, then read across. Total head is the lift from the pumping water level, plus the pressure you want at the tank (2.31 ft for every PSI), plus friction in the drop pipe. The output tables give the flow you get at a 30/50 PSI pressure switch for your depth to water.

5 GPM class — total head in feet at three flows

7 GPM class — total head in feet at three flows

10 GPM class — total head in feet at three flows (curves end at 12.5-13 GPM)

Total head read from the published curves in Franklin’s FPS Residential Submersible Catalog (MF5060), pp. 6, 8 and 10, digitized and rounded down to whole feet, at the plotted flows nearest 20%, 50% and 75% of where the curves end. 0 GPM is Franklin’s printed shut-off. Feet of head = PSI × 2.31.

Output in GPM at 30 PSI (switch cut-in), by depth to water

Output in GPM at 50 PSI (switch cut-out), by depth to water

Output tables as printed in MF5060, pp. 7, 9 and 11, at the 30 and 50 PSI rows; Franklin rounds them to whole GPM. Drop-pipe friction is not included (manufacturer note). — marks a point Franklin does not print.

3-wire control box by horsepower (ordered separately)

Best operating range: Franklin shades the best-efficiency range on each published curve and prints no figures for it. The curves are in the image gallery.

• Maximum diameter across the cable guard is 3.75 in on all models — smaller than a standard 4 in submersible, for reduced diameter or encrusted 4 in wells
• Discharge: 1-1/4 in NPT
• Maximum water temperature: 120 °F (49 °C)

• Install in a developed well; undeveloped water carries abrasives that wear the pump.
• Set the pump at least 5 ft off the bottom of the well and above the well screen or casing perforations, unless cooling flow past the motor is assured.
• Use positive-sealing check valves only, never swing type: one in-line within 25 ft of the pump below drawdown, and one every 200 ft of setting beyond 200 ft.

From the Franklin 4 in and 6 in submersible pump owner’s manual (106467101).