500 Gallon Duplex Fiberglass Pump Station with (2) 1.0 HP Little Giant Sewage Grinder Pumps and Alternating Control Panel

70" Diameter x 72" Tall Basin • True Duplex Redundancy • 53 ft Max Head • Up to 49 GPM • Pre-Assembled Grinder Lift Station with Alarm

This 500-gallon duplex grinder pump station is a heavy-duty, pre-assembled sewage lift station designed for residential and light commercial applications requiring reliable redundancy. Equipped with two 1.0 HP Little Giant grinder pumps and an automatic alternating control panel, this system provides built-in backup protection and even pump wear — ensuring continuous operation even if one pump requires service. Ideal for homes with basements, low-lying plumbing, or sites where gravity drainage is not possible.

Built To Order Within 1-2 Business Days

$7065.00MSRP: $7599.00

Item #:500FPT-10GDUP

Manufacturer:Septic Solutions

FEATURES & BENEFITS

True Duplex Redundancy — Two independent 1.0 HP grinder pumps with automatic alternation for balanced operation and backup reliability.
Heavy-Duty Fiberglass Construction — 500-gallon tank (70" diameter x 72" tall) engineered for direct burial with excellent corrosion resistance and structural strength.
Powerful Little Giant Grinder Pumps — Efficiently grind tough solids (wipes, rags, feminine products, etc.) into a fine slurry for reliable transport through smaller lines.
High Performance — Each pump delivers up to 49 GPM with a maximum head of 53 ft.
Alternating Control Panel — Includes automatic alternation, high-water alarm, pump run indicators, and HOA switches.
Pre-Assembled & Ready to Install — Comes complete with pumps, floats, discharge piping, check valves, and 24" access cover.

TECHNICAL SPECIFICATIONS

500-Gallon Fiberglass Tank

Dimensions: 70" Diameter x 72" Tall
Heavy-duty fiberglass for direct burial
24" Polylok access cover (risers available)
4" inlet with grommet
1-1/2" SCH 40 discharge pipe sealed with grommet
Cord seals for power and control wiring

Little Giant 1.0 HP Grinder Pumps (Qty: 2) — Model 16G-F151-20

1.0 HP, 115V, 12.5A, 60 Hz, single phase
Performance: 37 GPM @ 25 ft head • Max 49 GPM • Shut-off: 53 ft
2" NPT vertical female discharge
Heavy-duty cast iron construction
Includes 20 ft power cord with plug
Includes 20 ft wide-angle mechanical float switch with piggyback plug
Dimensions: 11.33" L x 10.03" W x 18.41" H
3-Year Manufacturer Warranty

SPI #50A506 Duplex Control Panel

120/240VAC single phase, 0-20 FLA
Automatic alternating relay
(3) mechanical float switches with 20 ft cords
360° red alarm beacon + 100 dB audible buzzer
Pump run indicators, HOA switches, Alarm Test/Mute
NEMA 4X weatherproof enclosure, UL 508A listed
2-Year Limited Warranty

Important Note: Grinder pumps are designed for pumping to a city sewer main or force main. They are not recommended for pumping directly into a septic tank (use sewage ejector pumps for septic applications).

APPLICATIONS

Homes with basements or below-grade bathrooms
Retrofitting existing properties to connect to city sewer
New construction where gravity flow is not possible
Properties requiring reliable redundancy and higher capacity
Challenging lots with tough solids in wastewater

WHAT'S INCLUDED

500-gallon fiberglass duplex basin
(2) Little Giant 1.0 HP grinder pumps (16G-F151-20)
SPI duplex control panel with alarm
Three mechanical float switches
24" Polylok access cover
Pre-installed discharge piping, check valves, and seals
All grommets, hardware, and wiring terminals

This item is custom built to our customers' site specific needs. Therefore it is considered a "Custom Product" and cannot be returned for a refund. See our Return Policy for more details.