An ANSI pump is a type of centrifugal pump designed to meet the dimensional and performance standards set by "ANSI/ASME B73.1" (The American National Standards Institute). These standards ensure interchangeability, reliability, and ease of maintenance, making ANSI pumps a common choice in industrial and residential settings.

An ANSI pump isn’t a brand, it’s a standardized design.

All pumps built to ANSI B73.1 MUST have:

• Standardized mounting dimensions (so that pumps from different manufacturers can be swapped without modifying any piping)

• Consistent shaft heights and footprint

• Back pull-out design, allowing maintenance without removing piping or the motor

ANSI pumps are commonly used in:

• Chemical processing

• Water and wastewater systems

• Petroleum and refining

• Food and beverage industries

• General industrial processes

They’re ideal for clean or lightly contaminated liquids where reliability and ease of maintenance matter.

To know what size ANSI pump you need, you must first know what you are using the pump for, and the environment the pump will be in.

Pump sizing is typically based on:

• Flow rate (GPM)

• Total dynamic head (TDH)

• Fluid type and temperature

• System pressure

Improper sizing can lead to inefficiency, vibration, and premature wear. So be sure to contact us for an expert review and a free quote.

Yes. As long as both pumps meet ANSI B73.1 standards. This is one of the biggest advantages of ANSI pumps: drop-in replacement without re-piping. This is why so many industries use ANSI pumps for various applications.

Routine maintenance for ANSI pumps include:

• Seal inspection or replacement

• Bearing lubrication or replacement

• Alignment checks

• Monitoring vibration and noise

Thanks to standardization, parts and service are widely available through suppliers such as Stryker Pump Manufacturing.