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Stainless steel submersible sump pump with vertical float switch

Dayton

Dayton 3YU73 1/2 HP 1-1/4" Submersible Sump Pump 115V Vertical Float

SKU CH-X1N8-NF65M MPN 3YU73

Removes water from sump pits with a 1/2 HP motor, vertical float switch, and stainless-steel body delivering up to 42 gpm at 5 ft head

  • TypeDrain Components
  • Removes water efficiently with 42 gpm flow at 5 ft head
  • Handles higher lift up to 25 ft maximum head
  • Durable stainless steel body resists corrosion
  • Automatic vertical float switch activates at 6 13/64 in on point
  • Compact 9 in body fits 12 in minimum sump pit diameter

1/2 HP Submersible Sump Pump

The Dayton 3YU73 is a 1/2 horsepower submersible sump pump designed for residential water removal. It operates on 115V AC power at 60 Hz and draws 2.9 amps during use. The stainless steel body and polyamide impeller provide corrosion resistance for typical basement or crawlspace installations.

Vertical Float Switch Operation

A vertical float switch with piggyback electrical connection controls automatic operation. The pump activates when water reaches 6 13/64 inches and shuts off at 2 9/16 inches. This tethered design requires a minimum sump pit diameter of 12 inches to allow the float to move freely without obstruction.

Flow Rates and Head Capacity

The pump delivers 42 gallons per minute at 5 feet of head and 35 gallons per minute at 10 feet of head. Output decreases to 25 gallons per minute at 15 feet and 12 gallons per minute at 20 feet of head. Maximum shut-off head is 25 feet, limiting use to shallow lift applications within that range.

Highlights

  • Removes water efficiently with 42 gpm flow at 5 ft head
  • Handles higher lift up to 25 ft maximum head
  • Durable stainless steel body resists corrosion
  • Automatic vertical float switch activates at 6 13/64 in on point
  • Compact 9 in body fits 12 in minimum sump pit diameter

Specifications

TypeDrain Components
BrandDayton
Model3YU73

Questions about this item

How often should the Buna-N shaft seal be inspected or replaced on the 3YU73?

The Buna-N shaft seal is a wear item; inspect it annually and replace if leakage appears around the motor housing.

At what head height does the flow rate drop below 20 gpm on the 3YU73?

At 20 ft of head the pump delivers 12 gpm, so sustained operation above that level will fall under 20 gpm.

How hot does the motor get when the 3YU73 runs continuously at 2.9 A?

The motor is rated for continuous duty at 115 V AC, 60 Hz and 2.9 A; it will run warm but within design limits during all-day operation.

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