UD001-238NU Replacement | LMI Unidose UD001-938NU Pump (115V)

The LMI Unidose UD001-938NU is the current, high-durability 115V metering pump designed for precise chemical dosing in residential well water and light industrial systems. This model is the official, reinforced replacement for the discontinued UD001-238NU and legacy UO series.

Upgraded for Reliability This 938NU model features a newly engineered, heavy-duty liquid end that provides superior structural integrity compared to previous generations. This upgrade was specifically designed by the manufacturer to handle continuous stress and prevent the premature head failures seen in older "thin-wall" designs.

Key Specifications:

• Output: Adjustable from 1 to 24 GPD (Gallons per Day).

• Pressure: Rated up to 80 PSI.

• Power: 115V (Includes standard US plug).

• Control: Simple, single-dial manual adjustment for both stroke and rate.

• Enclosure: NEMA 4X / IP65 for indoor or outdoor protection.

Direct Replacement For: This pump is a 100% "drop-in" replacement with the exact same footprint and plumbing connections for the following discontinued models:

• UD001-238NU (Replaces the original 4th generation)

• UO Series: U011-281TT, U021-281TT, U031-281TT, U041-281TT

• Legacy Models: 115-volt UO series Unidose pumps.

Complete Installation Kit Included: Every pump ships ready-to-install with:

• Suction Valve & Foot Valve

• Injection Check Valve

• High-quality UV-resistant tubing

View manufacturer specs here