Sta-Rite K Series 4″ Submersible Well Pump and Motor Buyers Guide & Review

The Sta-Rite K series submersible well pumps provide first class performance in residential, commercial, irrigation and farm use. The proven “Floating Impeller” staging system incorporates a sand handling and thrust management staging system with “dry-run” design. Designed with a corrosive resistant, stainless steel wear surface that greatly reduces problems with abrasives and sand lock-up.

Features

  • Stainless steel shell offers high corrosion resistance
  • Fiberglass-reinforced thermoplastic discharge with proven internal check valve
  • Nylatron discharge bearing is self-lubricating and resists wear surface from sand
  • Acetal impellers
  • Polycarbonate diffusers
  • Suction Caps are polycarbonate with stainless steel insert
  • Proprietary spec. thrust pads
  • Hexagonal 3/8” shaft and coupling are made of stainless steel 300 grade and offers generous impeller drive surfaces
  • Motor Bracket/Intake Screen is made of fiberglass-reinforced thermoplastic incorporates an integral suction screen
  • Durable internal check valve
  • Rigid PVC, corrosion resistant cable guard with 300-grade stainless steel fasteners
  • Large wrench flats and rope hole
STA-RITE K SERIES 4″ SUBMERSIBLE WELL PUMPS

sta rite k 4 series submersible well pump and motor

Model Comparison Chart

Model Discharge HP Voltage Phase Best Efficiency GPM Shut-off Head Wiring Stages
S10K05231-02 1-1/4″ 1/2 230 1 10 243′ 3-wire 7
S10K05221-02 1-1/4″ 1/2 230 1 10 243′ 2-wire 7
S10K05121-02 1-1/4″ 1/2 115 1 10 243′ 2-wire 7
S7K05231-02 1-1/4″ 1/2 230 1 7 329′ 3-wire 10
S5K05231-02 1-1/4″ 1/2 230 1 5 356′ 3-wire 12
S10K07231-02 1-1/4″ 3/4 230 1 10 313′ 3-wire 9
S7K05221-02 1-1/4″ 1/2 230 1 7 329′ 2-wire 10
S7K05121-02 1-1/4″ 1/2 115 1 7 329′ 2-wire 10
S10K07221-02 1-1/4″ 3/4 230 1 19 313′ 2-wire 9
S5K05221-02 1-1/4″ 1/2 230 1 5 356′ 2-wire 12
S5K05121-02 1-1/4″ 1/2 115 1 5 356′ 2-wire 12
S7K07231-02 1-1/4″ 3/4 230 1 7 428′ 3-wire 13
S5K07231-02 1-1/4″ 3/4 230 1 5 505′ 3-wire 17
S20K10231-02 1-1/4″ 1 230 1 20 262′ 3-wire 7
S7K07221-02 1-1/4″ 3/4 230 1 7 428′ 2-wire 13
S10K10231-02 1-1/4″ 1 230 1 10 417′ 3-wire 12
S20K10221-02 1-1/4″ 1 230 1 20 262′ 2-wire 7
S10K10221-02 1-1/4″ 1 230 1 10 417′ 2-wire 12
S5K07221-02 1-1/4″ 3/4 230 1 5 505′ 2-wire 17
S7K10231-02 1-1/4″ 1 230 1 7 560′ 3-wire 17
S5K10231-02 1-1/4″ 1 230 1 5 624′ 3-wire 21
S7K10221-02 1-1/4″ 1 230 1 7 560′ 2-wire 17
S20K15231-02 1-1/4″ 1-1/2 230 1 20 337′ 3-wire 9
S20K15221-02 1-1/4″ 1-1/2 230 1 20 337′ 2-wire 9
S10K15221-02 1-1/4″ 1-1/2 230 1 10 556′ 2-wire 16
S10K15231-02 1-1/4″ 1-1/2 230 1 10 556′ 3-wire 16
PERFORMANCE CURVES

sta rite k 4 series submersible well pump curves

PERFORMANCE BY PLUMBING DEPTH

sta rite k 4 series submersible well pump performance

DIMENSIONAL DATA

sta rite k 4 series submersible well pump and motor outline dimensions

MANUAL
Sta-Rite 4″ Submersible Well Pump Installation and Operating Manual
SPECIFICATIONS
Sta-Rite K Series Specifications

Pump Products application engineers are standing by to help you find the right pump, as well as to provide price quotes, stocking availability and shipping information. Call our toll free number 1-800-429-0800 to speak to an expert today.