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Cast iron effluent pump, cylindrical body, dark grey finish

Dayton

Dayton 3BB85 1 hp Effluent Pump 240 V 8.3 A

SKU CH-FAZM-464CN MPN 3BB85

A 1 hp effluent pump rated for 240 V and 8.3 A delivers up to 85 gpm at 10 ft head with a cast iron body and polypropylene impeller

  • Product typeDrain Components
  • Delivers up to 85 gpm at 10 ft head for strong effluent removal
  • Maintains 83 gpm at 15 ft head and 80 gpm at 20 ft head
  • Provides 68 gpm at 40 ft head and 52 gpm at 60 ft head
  • Cast iron body with polypropylene impeller resists corrosion in harsh conditions
  • Operates on 240 V single-phase power drawing 8.3 A for reliable performance

1 hp effluent pump, 240 V motor

This single-phase effluent pump delivers one horsepower at 240 volts AC and draws 8.3 amps. The cast-iron body and nitrile rubber or silicon carbide shaft seal are built for submerged operation. A piggyback electrical connection allows a separate float switch to be added. Flow rates fall from 85 gpm at 10 ft head to 34 gpm at 80 ft head.

Installers handling septic effluent or grey water

Suits contractors and property owners moving screened effluent from septic tanks or dosing chambers to drain fields. The lack of an integrated switch means buyers who want a plug-and-play unit with a built-in float should look elsewhere. Systems requiring automatic level control must source a compatible piggyback switch separately.

Flow rate at 10 ft head: 85 gpm

This single figure shows whether the pump can meet the design flow for a given system head. If the required delivery at the installed head is higher than 85 gpm, the pump will not satisfy the specification. Match the published curve points to the system curve before selecting this model.

How it compares

Measured against everything we stock in Drain Stoppers, Strainers & Traps, at today’s prices. Recalculated every night.

Price $1,279.99
Pricier than about 92% of the 4,240 comparable items (median $31.99).

Specifications

Product
Brand nameDayton
Model name3BB85
Product typeDrain Components

Questions about this item

What electrical supply is required to run this 1 hp effluent pump?

The pump is rated for 240 V AC single-phase power at 60 Hz and draws 8.3 A.

Can this pump replace a lower-head unit in an existing 2-inch discharge line?

At 20 ft of head it delivers 80 gpm, and at 40 ft it still provides 68 gpm through the same discharge size.

How do I verify the pump is performing correctly after installation?

Measure the flow at a known head — for example, 85 gpm at 10 ft or 52 gpm at 60 ft confirms rated performance.

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