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Dayton 1D881 shallow well jet pump, cast iron body, motor mounted on top, 1/2 hp dual voltage

Dayton

Dayton 1D881 Shallow Well Jet Pump 1/2 hp 115/230V

SKU CH-FJMD-KPD53 MPN 1D881

Shallow well jet pump delivers 9.6 gpm at 30 psi with a 25 ft suction lift and 1/2 hp motor

  • TypeDrain Components
  • Delivers up to 9.6 gpm at 30 PSI for strong household supply
  • Dual voltage 115/230V AC fits standard wiring without rewiring
  • Maximum suction lift of 25 ft handles deep water sources
  • Built-in diffuser and drain plug simplify installation and maintenance
  • Shut-off pressure of 72 psi protects plumbing from over-pressure damage

Shallow Well Jet Pump 1/2 hp

The Dayton 1D881 is a shallow well jet pump rated at 1/2 hp for 115/230V AC operation. It suits residential water supply where the static water level is within 25 ft of the pump. The unit includes an ejector and diffuser for immediate installation.

Dual-voltage motor draws 8.6 / 4.3 A

At 115V the motor draws 8.6 A and at 230V it draws 4.3 A, allowing flexible wiring to existing circuits. Maximum case pressure and shut-off pressure are both 72 psi, and the pump is rated for fluid temperatures up to 140°F. These limits define the thermal and pressure envelope for normal daily cycling.

Cast-iron body with 1-1/4 in NPT inlet

The housing provides 1-1/4 in NPT suction and 3/4 in NPT discharge connections for standard plumbing fittings. A drain plug is included for seasonal maintenance or winterising. Overall dimensions are 19 3/4 in length, 9 7/8 in width and 6 3/4 in height, so the pump fits in compact mechanical rooms or well houses. Not for applications requiring deeper suction lifts or higher flow rates at pressure.

Highlights

  • Delivers up to 9.6 gpm at 30 PSI for strong household supply
  • Dual voltage 115/230V AC fits standard wiring without rewiring
  • Maximum suction lift of 25 ft handles deep water sources
  • Built-in diffuser and drain plug simplify installation and maintenance
  • Shut-off pressure of 72 psi protects plumbing from over-pressure damage

Specifications

TypeDrain Components
BrandDayton
Model1D881

Questions about this item

How do I install the 1-1/4 in NPT inlet and 3/4 in NPT discharge connections, and what step is often missed?

Use Teflon tape on both NPT threads and tighten securely; the step often missed is priming the pump with water before starting to prevent air lock and seal damage.

What maintenance will the diffuser and drain plug need over time?

Inspect the diffuser annually for wear or debris buildup and clean it; check the drain plug for corrosion and ensure it seals properly before each winter season.

At what pressure does the pump hit its shut-off limit during sustained operation?

The shut-off pressure is 72 psi; sustained operation at or near this pressure will stop flow and can overheat the motor.

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