Sta-Rite STEP 20 (1/2 Hp) 20 GPM Stainless Steel


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The Sta-Rite Step 20-3 /½ HP Effluent Pump is the perfect effluent pump for customers seeking dependability. The submersible effluent pump offers a reliable performance and value for high pressure filtered effluent applications. The Sta-Rite Step 20-3 / ½ HP Effluent Pump has a stainless steel and composite construction, which gives the pump superior performance. The pump also features an exclusive industry dry-run capability and a serviceable fiberglass reinforced thermoplastic intake screen. This tested fiberglass -reinforced thermoplastic is extremely tough so that it can withstand wear.  The Sta-Rite Step 20-3 / ½ HP Effluent Pump is also extremely durable. The shell is a 300-grade stainless steel shell that offers high corrosion resistance. The pump also features an enclosed and self-lubricated Nylatron shaft and bearings that resist wearing from sand. The Proven “floating impeller” staging system incorporates first-in-class performance, and handling, and thrust management to give you the best experience possible.

The Sta-Rite Step 20-3 / ½ HP Effluent Pump should last for years, however, if your old Sta-Rite Step 20-3 ½ HP Effluent Pump is starting to slow down, or has stopped working, this model is an exact replacement. The Sta-Rite Step 20-3 ½ HP Effluent Pump typically needs little maintenance; however, the owners manual comes with an intuitive troubleshooting guide, so you can diagnose any issues yourself before buying a new model.


  • VOLTAGE: 115 volts, 60 Hz
  • AMP DRAW: 10.5 amps at full load
  • SHELL: Stainless steel
  • DISCHARGE: 1-1/4″ NPT, Fiberglass-reinforced thermoplastic
  • IMPELLERS: Delrin® (5 stages)
  • DIFFUSERS: Polycarbonate (5 stages)
  • SUCTION CAPS: Polycarbonate with stainless steel wear ring
  • THRUST PADS: Proprietary spec.
  • SHAFT AND COUPLING: Stainless steel 300 grade
  • INTAKE: Fiberglass-reinforced thermoplastic
  • INTAKE SCREEN: Polypropylene
  • POWER CORD: 300 Volt “SOOW” jacketed 10′ leads, 115 Volt, 2-wire with ground


Additional information

Weight 480 oz
Dimensions 4 × 4 × 30 in