Franklin Electric 8 in SSI Submersible Pump End - Stainless Steel, 425-475 GPM, 25-125 HP

The SSI Series uses die-cut stainless steel impellers and diffusers with Franklin's patented I-Type blade assembly, which reduces hydraulic friction and improves efficiency. A four-strap design reduces irregular compression loading, and the built-in check valve protects the pump against water hammer.

• High quality die-cut stainless steel impellers and diffusers for durability in demanding applications
• Patented I-Type blade assembly reduces hydraulic friction and improves pump efficiency
• High standard of energy efficiency for a reduced cost of operation
• Nitrile wear rings and fluted bearings ensure durability against wear for long- lasting performance and reliability
• Four-strap design reduces irregular compression loading

Open your flow class and find the model that matches your build. Total head is the lift from the pumping water level, plus the pressure you need at the top (2.31 ft for every PSI), plus friction in the column pipe. Pick the model whose head at your flow covers that total.

Total head read from the published curves in Franklin’s FPS Submersible Catalog (Mi1007), 8 in SSI Series section, digitized and rounded down to whole feet, at the plotted flows nearest 20%, 50% and 75% of where the curves in each class end. Franklin prints no shut-off figure for this series; the 0 GPM column reads each curve at its first plotted point. Franklin prints no output tables for this series. Feet of head = PSI × 2.31.

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

• 304 series stainless steel
• 60 Hz operation
• 3 in, 4 in, 5 in, and 6 in NPT discharge
• 140 °F / 60 °C maximum operating temperature
• 2 mm solids handling

• Install in a developed well; undeveloped water carries sand that wears the pump.
• Set the pump suction at least 10 ft below the expected drawdown level and at least 5 ft off the bottom of the well.
• The built-in check valve sits on the pump; add one above ground, and one in the drop pipe every 100 ft of setting beyond the first 100 ft.
• Support the riser at the wellhead and keep the cable clear of clamps and the casing while lowering.

From the Franklin 6 in and 8 in submersible pump owner’s manual (106472101).

Irrigation, Agricultural, Municipal, Commercial and De-watering.