Product Overview
The Zoeller M73 Model 73 automatic sump pump is designed for residential basement sump applications where groundwater needs to be moved out of a sump basin. This 1/3 HP, 115V automatic submersible pump includes an integral float-operated mechanical switch and a 9 ft power cord.
The Model 73 uses a cast iron motor housing and pump housing for heat dissipation and strength, with engineered plastic / thermoplastic components where specified by Zoeller. Its vortex impeller is designed to pass 1/2 in. spherical solids in typical sump pump applications.
Key Features:
- Automatic sump pump for basement sump and residential groundwater removal
- 1/3 HP, 115V, single-phase motor
- Integral float-operated mechanical switch
- 1-1/2 in. NPT discharge
- Handles 1/2 in. spherical solids
- Cast iron motor housing and pump housing
- Engineered plastic / thermoplastic vortex impeller
- 9 ft power cord
- 100% factory tested by Zoeller
- 2-year limited warranty
Common Uses:
- Residential basement sump pits
- Groundwater removal from sump basins
- Replacement sump pump installations where the specifications match the system
- Home drainage applications requiring an automatic float-operated pump
Technical Specifications:
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Model: M73 / Model 73
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SKU: 73-0001
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Horsepower: 1/3 HP (0.33 HP)
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Voltage: 115V
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Phase: 1
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Amps: 5.5
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Hertz: 60
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RPM: 3450
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Operation: Automatic
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Switch: Integral float-operated mechanical switch
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Discharge: 1-1/2 in. NPT
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Solids Handling: 1/2 in. spherical solids
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On / Off Points: 7-1/4 in. / 3 in.
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Cord Length: 9 ft
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Max Performance: 18 ft shut-off head; 38 GPM at 5 ft
Dimensions:
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Pump Dimensions: 12-3/32 in. H x 9-25/32 in. W
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Shipping Dimensions: 10-3/8 in. H x 7-3/4 in. W x 10 in. L
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Shipping Weight: 20.39 lbs
Important Installation & Safety Notes:
- Confirm voltage, discharge size, switch type, basin size, and application before installation.
- Zoeller recommends an 18 in. or larger pit where applicable.
- If a check valve is used, follow the installation manual for the required vent hole location and cleaning guidance.
- This pump is not intended for potable water.
- Do not use in swimming pool, marine, or hazardous classified locations.
- Install according to the Zoeller instructions, the National Electrical Code, and applicable local codes and ordinances.
FAQ
Is this pump automatic?
Yes. The Zoeller M73 includes an integral float-operated mechanical switch for automatic operation.
What is this pump used for?
It is designed for residential basement sump applications and groundwater removal from sump basins.
What discharge size does it use?
The Model 73 uses a 1-1/2 in. NPT discharge.
Can this pump be used for potable water?
No. The installation manual states that this pump is not intended for potable water.
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