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Submersible sump pump, cast iron body, diaphragm switch, 1-1/2 inch FNPT discharge

Dayton

Dayton 3BB80 3/4 HP Submersible Sump Pump 120V AC Diaphragm 1-1/2" FNPT

SKU CH-48NY-FESGG MPN 3BB80

A submersible sump pump with a 3/4 HP motor, 120V AC power, and diaphragm switch delivering up to 113 gpm at 5 ft head

  • TypeDrain Components
  • 3/4 HP motor delivers 113 gallons per minute at 5-foot head
  • Diaphragm switch activates pump at 14 1/2 inches and shuts off at 5 inches
  • Cast iron body and impeller withstand abrasive sump water
  • Carbon ceramic shaft seal reduces wear during continuous operation
  • 120V AC 60 Hz power draws 10.5 amps for standard household circuits

3/4 HP Submersible Sump Pump for Residential

The Dayton 3BB80 is a 3/4 horsepower submersible sump pump designed for residential drainage and water removal. It operates on a 120V AC, 60 Hz power supply drawing 10.5 amps. The cast iron body and impeller provide durability for continuous immersion. A 1-1/2 inch FNPT discharge connects to standard piping.

Diaphragm Switch Performance Across Variable Head

The diaphragm switch actuates at an on point of 14 1/2 inches and an off point of 5 inches, automating pump cycles. Flow rates decrease as head height increases: 113 gpm at 5 feet, 101 gpm at 10 feet, 92 gpm at 15 feet, and 80 gpm at 20 feet. Maximum head reaches 37 feet. This curve shows sustained output under increasing back pressure rather than a single peak figure.

Direct Submersible Installation With Piggyback Plug

The pump body measures 10 inches in diameter and 13 inches in overall height, fitting standard sump basins. Installation uses the piggyback electrical connection for the float switch, allowing the pump motor to plug directly into the outlet. The cast iron construction adds weight requiring secure placement. Carbon ceramic shaft seals resist wear but require clean water to prevent abrasive damage. California Proposition 65 warnings apply for cancer and reproductive harm.

Highlights

  • 3/4 HP motor delivers 113 gallons per minute at 5-foot head
  • Diaphragm switch activates pump at 14 1/2 inches and shuts off at 5 inches
  • Cast iron body and impeller withstand abrasive sump water
  • Carbon ceramic shaft seal reduces wear during continuous operation
  • 120V AC 60 Hz power draws 10.5 amps for standard household circuits

Specifications

TypeDrain Components
BrandDayton
Model3BB80

Questions about this item

How much heat and power will the 10.5 A motor draw during continuous operation?

The pump runs on 120 V AC at 60 Hz and draws 10.5 A, so the circuit must supply that load continuously; the cast-iron body and carbon-ceramic shaft seal dissipate heat without extra cooling.

What discharge piping and electrical circuit must I already have for the 1-1/2" FNPT outlet and 10.5 A draw?

You need a 1-1/2 inch FNPT discharge line and a dedicated 120 V AC circuit rated for at least 10.5 A; the piggyback diaphragm switch plugs into the same outlet.

Will the 37 ft maximum head and 10 in body diameter fit inside my existing 12 in basin alongside older piping?

The pump is 13 in tall and 10 in wide with a 1-1/2 in FNPT discharge, so it fits most basins 12 in or wider; the 37 ft max head covers typical residential lift heights.

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