ANSI Standard Summary
ASME B73.1 - 2001
•Centrifugal, horizontal, end suction, centreline discharge designed pumps.
•Dimensional interchangeability requirements, including; Mounting Dimensions, size and locations of suction and discharge nozzles, input shafts, baseplates and foundation bolt holes and certain features to facilitate installation and maintenance.
•Hydrotest to 1.5 times working pressures
•Temperatures available up to 260C (500F)
•Flanges to Class 150 with Class 300 as an option
•Must facilitate ‘Back Pull Out’ Design
•Shaft runout and deflection limits
•Mechanical Seal Piping Plans, etc…

ISO Standard Summary
Frame-mounted ISO Chemical process pumps designed to comply with international standards ISO 5199 (technical), ISO 2858 (Dimensional) & ISO 3661 (Baseplate) – Can be Single or Multi stage, Horizontal or vertical, End Suction Pumps.
BS EN ISO 5199:2002
•Technical Specifications for Centrifugal Pumps
•Including: -
–Operating Limits and Range
–Design and Working pressure
–Temperature Limits
–Corrosion Allowance, etc…
BS EN 22858:1993 (ISO 2858:1975)
•This international Standard specifies the principal dimensions and nominal duty point of end-suction centrifugal pumps having a maximum operating rating of 16 bar

DIN Standard Summary
Norminal Duty Point. Main dimensions & Designation System for End Suction centrifugal Pump with a 10 Bar rating and a bearing bracket.
EN 733 : 1995
•Hydrotest to 1.3 times working pressure to a max of 13 bar
•Desigation System