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Be ready for the outages you can plan for—and the ones you can't

When a critical pump goes down, the clock starts. Keeping the right spares on hand lets your team swap in a complete assembly and get back online quickly.

Pump inspection and quality assurance at the A-C Custom Pump facility, Pewaukee, WI, USA

Keep the critical spares your team needs on hand

The most expensive part of a pump failure is rarely the repair itself—it's the downtime that follows while you wait for parts. For maintenance teams managing aging equipment under lean staffing, the difference between a quick swap and a prolonged outage often comes down to what's already on your shelf.

We help you identify and stock the parts that matter most, so your team can respond to both unplanned failures and repair needs caught during scheduled inspections.

Backed by 150 years of custom pump design and manufacturing expertise, plus a comprehensive library of legacy pump drawings, manuals and curves, Xylem A-C Custom Pump spares help keep your equipment operating for years to come.

  • Complete rotating assembly design, manufacture and reconditioning from Xylem A-C Custom Pump

    Complete rotating assemblies

    A full pump rotating assembly—including shaft, impeller and sleeves—ready to drop in. Your team replaces the assembly and returns the worn unit for reconditioning.

  • Xylem A-C Custom Pump vertical column pump for nuclear power generation facility

    Complete pump assemblies

    Swap out the complete pump with minimum downtime and fully restore your worn unit to OEM as-new specifications, ready for service when needed.

  • Bearings for an A-C Custom Pump series vertical column pump

    Bearings, seals and sleeves

    For many custom pumps, even the wear parts are specialized. Stocking spares reduces emergency procurement risk and helps prevent damage to higher-value components.

  • Impeller for a Xylem A-C Custom Pump vertical column pump, awaiting shipment from the Pewaukee, WI, facility

    Genuine OEM parts

    Our archive of Allis-Chalmers, ITT A-C Pump and Flygt A-C Series drawings means we can provide genuine OEM spares to keep your pumps performing to spec.

Engineered upgrades to transform aging infrastructure

Keeping a pump running is only half the picture. When operating conditions change, capacity demands grow, or your unique legacy pumping configuration is integral to your infrastructure, a targeted upgrade can modernize your pump; improve efficiency, capacity and reliability; and add years of service without replacing the entire unit.

Our expert engineers and technicians can recondition your pump to original specifications; diagnose and address chronic failures; and perform hydraulic, mechanical, and electrical upgrades to revamp your units, solve historic pain points, and meet new demands.

To ensure compatibility of a new design when system conditions such as operating speed or structural rigidity are changed, we perform a comprehensive engineering analysis using advanced tools like finite element analysis (FEA) and computational fluid dynamics (CFD).

Every A-C Custom Pump solution is also backed by full-scale testing capabilities, so performance is verified before a pump leaves our facilities.

What an engineered pump upgrade can address

  • New capacity needs when flow or head requirements have outgrown the original installation.
  • Aging infrastructure where original equipment requires refurbishment or modernization.
  • Repeat component failures from problematic service or system conditions.
  • Civil or building constraints where equipment is so integral that replacement is cost-prohibitive or physically impossible.
  • Efficiency and reliability degradation through hydraulic or mechanical redesign.

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Build your critical spares plan

Together, we can identify the critical pumps and parts your operation depends on—and put a stocking plan in place so your team is ready for the next planned inspection or unplanned failure.

Build your critical spares plan

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About Xylem’s A-C Custom Pump series

Our legacy of engineered custom pump solutions dates back 150 years to the Edward P. Allis Company and Allis-Chalmers, and we continue to manufacture new A-C Custom Pump units for high-volume water and wastewater applications today. Our aftermarket engineering team applies decades of pump design and manufacturing expertise, advanced analytical tools, expert-level ISO vibration training, and an extensive library of OEM pump drawings and manuals to support and modernize installed equipment across North America.

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