Welcome to TG WasteWater

Sta-Rite 20DOM05121 STEP Plus D-Series High Head Submersible Effluent Pump, 20 GPM, 1/2 HP, 115V

More Views

Sta-Rite 20DOM05121 STEP Plus D-Series High Head Submersible Effluent Pump, 20 GPM, 1/2 HP, 115V

Availability: In stock

This 4" submersible pump in 10, 20 and 30 GPM models dominates with superior "DRAW-DOWN" capability. Sold & proven in aerobic & filtered effluent service applications.



Key features
  • 1/ 2 HP, 115 Volt, single-phase, 2-wire
  • Superior draw-down capability to 4-1/2” (114mm) vs. 13-1/2” (343mm) on a standard NEMA 4”
  • 25% Reduced AMP-draw 9.5 amps vs. 12.7 amps on a standard NEMA 4”
  • Cooler and quieter operation – eliminates expensive “flowinducer sleeves”
  • UL, CSA Listed
  • Stainless steel and composite construction
  • Patented and proven SignaSeal™ staging
  • Exclusive STA-RITE dry-run capability
  • Enclosed and self-lubricated Nylatron® shaft-bearing resists wear from abrasives
  • Heavy 7/16” (12mm) positive drive 300 Series stainless steel hexagonal shaft
  • Stainless steel intake screen – allows for .080” solids
  • Powered by STA-RITE motors

1-year limited warranty


VOLTAGE:  115 volts, 60 Hz

AMP DRAW:  9.5 amps at max load


MOTOR:  Dry-wound, double ballbearing,double-seal and thermal overload protected, UL and CSA approved.

BODY:  Stainless steel (300 grade)

IMPELLERS:  Precision molded Acetal for perfect balance… ultra smooth for the highest performance and efficiency. Allows for .080" solids.

DIFFUSERS:  Polycarbonate

BEARINGS:  Nylatron®

DISCHARGE:  1-1/4" Fiberglassreinforcedthermoplastic

INTAKE SCREEN:  Stainless steel

POWER CORD:  600 Volt “SJOW” jacketed 10' leads, 2-wire with ground


Additional Information

Additional Information

Manufacturer Sta-Rite
Attachment View File Sta-Rite STEP Plus D Specifications Size: (201.46 KB)
Attachment View File STA-Rite STEP Plus D Owners Manual Size: (113.74 KB)
Product Reviews
Number of reviews : 24
Average rating : 4.6 /5
A. Anonymous
  the 30/05/2021
5/ 5
It's a winner and is as represented! Well done !
A. Anonymous
  the 25/02/2021
5/ 5
Pump is not install yet
A. Anonymous
  the 30/07/2020
5/ 5
Came real fast and in great condition
A. Anonymous
  the 10/07/2020
5/ 5
Replaces the same pump that was in service for nine years.
G. Angela
  the 25/06/2019
5/ 5
Great product

Product Tags

Use spaces to separate tags. Use single quotes (') for phrases.