March AC-2AP-MD 115 VAC Magnetic Drive Centrifugal Pump 0125-0069-0400

The March 0125-0069-0400 AC-2AP-MD is a 115V, single-phase, air-cooled sealless centrifugal magnetic drive pump built for compatible chemical recirculation and fluid-transfer applications. This Series 2AP configuration combines a compact fan-cooled motor with a polypropylene wet end and smooth hose-style inlet and outlet connections.

At 60 Hz, March rates the AC-2AP-MD for a maximum flow of 5 GPM, maximum head of 13 feet and approximately 0.025 HP. The hydraulic characteristics make it suitable for small circulation systems where the required operating point falls within the manufacturer pump curve.

Sealless Magnetic Drive Construction

The motor drives the internal impeller through magnetic coupling rather than a conventional rotating shaft passing through the pump housing. This sealless arrangement eliminates the traditional mechanical shaft seal, helping reduce seal-related maintenance and potential leakage in compatible chemical-handling applications.

Polypropylene, Viton and Ceramic Wet End

The standard AC-2AP-MD wet end uses polypropylene front and rear housings and impeller, a Viton O-ring, ceramic shaft and thrust washer, and ceramic magnet. March uses a 3/4-inch OD smooth inlet and 1/2-inch OD smooth outlet on this model.

Operating Limits

March lists a maximum internal pressure of 50 PSI and maximum liquid temperature of 190°F / 87°C for the AC-2AP-MD. These limits do not replace chemical-compatibility evaluation; fluid concentration, temperature, viscosity and specific gravity should be considered when selecting a pump.

Common AC-2AP-MD Applications

Manufacturer-listed applications include etching equipment, photographic processing equipment, ice makers, ice flakers, plate processors and marine air conditioning. March also positions the model for chemical recirculation and chemical transfer. The pump has been applied to various water and chemical services, but the exact wet-end configuration must be compatible with the intended liquid.

115V Model Identification

Part number 0125-0069-0400 identifies the AC-2AP-MD 115V complete standard pump. The closely related 0125-0069-0500 is the 230V version. Confirm voltage before ordering because the hydraulic family and external appearance can otherwise be similar.

Selecting the Right March Pump

Compare required flow and total dynamic head with the March pump curve, then verify voltage, connection type, fluid compatibility and temperature. A pump should not be selected solely from its maximum-flow rating because actual flow depends on system resistance and operating head.

For compatible applications, the March 0125-0069-0400 provides a compact combination of sealless magnetic-drive operation, corrosion-conscious wet-end materials and serviceable Series 2 construction.