Leo 4SR16-20 / 5.5KW Submersible Borehole Pump Only

The LEO 4SR16-20 is a 4-inch (100 mm) stainless steel submersible borehole pump end from the 4SR16 series, built for high-volume water supply from boreholes of 100 mm (4") diameter and larger. With 20 stages and a 5.5 kW (7.5 HP) motor rating, it delivers a nominal 16 m³/h, handles up to 24 m³/h (400 l/min), and produces up to 125 m of head at shut-off (about 89 m at 12 m³/h). This is the pump end only: it couples to a standard 4" NEMA submersible motor of 5.5 kW, sold separately.

The 4SR range uses an AISI304 stainless steel outer casing, shaft and motor bracket, with floating Noryl® impellers (FDA-approved material) that tolerate small amounts of sand. A built-in AISI304 check valve and inlet strainer protect the pump and the rising main. Typical uses are farm and game-farm water supply, irrigation, livestock watering, domestic and estate borehole systems, and pressure boosting when paired with a suitable tank or controller.

Specifications

• Model: 4SR16-20 (pump end only)
• Stages: 20
• Motor required: 5.5 kW / 7.5 HP, 4" NEMA submersible motor (3-phase 380-415V; single-phase available up to 2.2 kW)
• Nominal flow: 16 m³/h; operating range 8.4 - 24 m³/h
• Maximum head: 125 m
• Borehole: minimum 100 mm (4") internal diameter
• Materials: AISI304 casing, shaft, bracket and check valve; Noryl® floating impellers
• Maximum fluid temperature: 35 °C
• Maximum sand content: 0.25%
• Frequency: 50 Hz

Applications

• Borehole water supply for farms, estates and homes
• Irrigation and livestock watering
• Mining and building-site dewatering from boreholes
• Water transfer to reservoirs and elevated tanks

Performance table

Source: LEO 4SR submersible borehole pumps technical data (4SR16 series), 50 Hz.

Complete Specifications, Sizing and Price Guide Click Here.