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STA-Rite STEP20 4 inch Submersible Pump - STEP20-03

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STA-Rite STEP20 4 inch Submersible Pump - STEP20-03

Availability: In stock

High-Head Filtered Effluent Pump, Stainless Steel, 1/2 HP, 115V, 20 GPM

The new STEP Plus™ 4" submersible effluent pump 20 GPM (gallons per minute) model offers dependable performance and value for high pressure filtered effluent applications.


Key features
  • 1/2 HP, 115 Volt, single-phase, 2-wire
  • Superior performance
  • Stainless steel and composite construction
  • Exclusive industry dry-run capability
  • Enclosed and self-lubricated Nylatron® shaft-bearing resists
    wear from sand
  • Serviceable fiberglass reinforced thermoplastic intake screen

Proven “Floating Impeller”
Staging System
– Incorporates
1st-in-class performance, sand
handling and thrust management
staging system with the industry
exclusive “dry-run” design element.
Reinforced engineered composites
and stainless steel, offering high
resistance to corrosion and abrasion.


Discharge – Tested-tough, fiberglass-reinforced
thermoplastic, with proven
internal check valve. Large wrench
flats and rope hole.


Shell – 300-grade stainless steel
pump shell offers high corrosion


Shaft – Hexagonal 3/8", 300-grade
stainless steel pump shaft; offers
generous impeller drive surfaces.


Shaft Bearing – Exclusive self-lubricating
Nylatron bearing resists
wear surface from sand.
Motor Bracket – Tested-tough,
fiberglass-reinforced thermoplastic;
incorporates an integral suction


1-year limited warranty






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

Additional Information

Manufacturer Sta-Rite
Attachment View File Sta-Rite Step20 Specifications Size: (80.41 KB)
Attachment View File Sta-Rite Step20 Owners manual Size: (74.95 KB)
Product Reviews
Number of reviews : 13
Average rating : 4.9 /5
A. Anonymous
  the 27/10/2021
5/ 5
So far so good!
A. Anonymous
  the 12/08/2021
5/ 5
So far so good with this new pump. I had my system pumped when I installed this pump, so it took a while for it to kick in and drain the last tank. I was worried it wasn't coming on (either bad, or bad float switch) but my water level was very low again recently after rising. I guess I'm just not seeing it do its job, plus it does it so efficiently it doesn't run for a long time. Looks to be a solid replacement....just hope it lasts for at least 15 years like the original. (My Little Giant replacement only lasted 3.)
A. Anonymous
  the 21/09/2020
5/ 5
Working like a champ perfect fit!
A. Anonymous
  the 09/09/2020
5/ 5
time will tell, had to replace a 1 year old pump just like it
A. Anonymous
  the 05/09/2020
5/ 5
Just what I needed. Just ordered at 12:40 and paid for overnight deliver, but since it was after 12 and everyone had left for the day(including bosses), my order couldn't go out until Monday. I live in Texas also and was hoping

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