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ASME B73 Pumps are considered end suction centrifugal pumps. ASME B73 process pumps are designed to meet the ASME B73 standards. There are three applicable standards: This type of process pump comes in a wide range of materials depending on the application. ASME B73 pumps are used in chemical, petrochemical, and industrial processes.
 * B73.1 – Specification for Horizontal End Suction Centrifugal Pumps for Chemical Process
 * B73.2 – Specification for Vertical In-Line Centrifugal Pumps for Chemical Process
 * B73.3 – Specification for Sealless Horizontal End Suction Metallic Centrifugal Pumps for Chemical Process

ASME B73 Pump Standards
The ASME B73 series of standards are design and specification standards of various metallic and solid polymer centrifugal pumps for chemical process. In order to enhance installation, maintenance, reliability, and safety, the standards also include requirements for interchangeability. This way, pumps made to the same standard and designation can be interchangeable with respect to other features such as “mounting dimensions, size, and location of suction and discharge nozzles, input shafts, baseplates, and foundation bolt holes”.

The Standards also cover topics such as performance and reliability requirements such as run-out, maximum shaft deflection, internal clearances, L10 bearing life, vibration limits, corrosion allowance, flange loading along with other requirements.

B73.1 – 2012 Specification for Horizontal End Suction Centrifugal Pumps for Chemical Process

B73.1 covers the following design types :
 * Horizontal
 * End Suction Single Stage
 * Centerline Discharge

This Standard has been revised to include solid polymer pumps formerly covered under ASME B73.5.

B73.2 – 2016 Specification for Vertical In-Line Centrifugal Pumps for Chemical Process

B73.2 covers design and specification for “motor driven centrifugal pumps of vertical shaft, single stage design with suction and discharge nozzles in line.”

B73.3 -2015 Specification for Sealless Horizontal End Suction Metallic Centrifugal Pumps for Chemical Process

B73.3 covers design and specification for “metallic and plastic lined sealless centrifugal pumps of horizontal, end suction single stage, centerline discharge design.”

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Data Sheets
An ASME B73 data sheet is available for free download.