Pump standards define design, manufacturing, testing, and documentation requirements for different applications. Selecting the correct standard ensures interchangeability, safety, and compliance with industry regulations. Use this guide to identify which standard applies to your project.
Centrifugal Pumps for Petroleum, Petrochemical, and Natural Gas Industries. The most widely recognized standard for heavy-duty process pumps in refineries, petrochemical plants, and gas processing facilities.
Scope: Overhung (OH), between-bearing (BB), and vertically suspended (VS) pumps
Key Requirements: Minimum 3-year design life, 20,000 hours continuous operation, API 682 seal interfaces, hydrostatic testing at 1.5x rated pressure
Typical Applications: Refineries, petrochemical plants, offshore platforms, LNG facilities
Current Edition: 11th Edition (2010), with Addendum 1 (2012)
Sealless Centrifugal Pumps for Petroleum, Petrochemical, and Gas Industry Services. Standard for magnetic drive and canned motor pumps providing zero-emission operation.
Scope: Magnetic drive pumps and canned motor pumps
Key Requirements: Zero leakage containment, secondary containment shell, power monitoring, bearing wear detection, temperature monitoring
Typical Applications: Hazardous/toxic fluids, VOC emission control, expensive chemicals, high-purity systems
Current Edition: 2nd Edition (2019)
End-Suction Centrifugal Pumps for Chemical Process Industry. European standard for chemical process pumps ensuring dimensional interchangeability between manufacturers.
Scope: End-suction top-discharge centrifugal pumps (OH2 type)
Key Requirements: Standardized mounting dimensions, DN flanges per ISO 7005, back pull-out design, 16 bar pressure rating
Typical Applications: Chemical processing, pharmaceutical, water treatment, general industrial
Current Edition: ISO 2858:1975 (confirmed 2016), EN 22858:1992
Specification for Horizontal End Suction Centrifugal Pumps for Chemical Process. American standard for chemical process pumps, widely used in North America.
Scope: Horizontal end-suction top-discharge centrifugal pumps
Key Requirements: Standardized dimensions for interchangeability, 175 psi (12 bar) pressure rating, centerline or foot mounting options
Typical Applications: Chemical processing, pulp & paper, food & beverage, North American markets
Current Edition: ASME B73.1-2019
3-A Accepted Practices for Centrifugal and Positive Displacement Pumps for Sanitary Applications. Hygienic design standard for food, dairy, beverage, and pharmaceutical industries.
Scope: Centrifugal pumps (02-10), rotary lobe pumps (02-11), and other positive displacement pumps
Key Requirements: Ra 0.8um surface finish, radiused corners (min 3mm), no dead zones, fully drainable, CIP/SIP compatible, FDA-compliant materials
Typical Applications: Dairy, food & beverage, pharmaceutical, biotech, cosmetics
Current Edition: 3-A 02-10-2018 (centrifugal), 02-11-2017 (lobe)
Hydraulic Performance Acceptance Tests for Rotodynamic Pumps. Standard defining pump performance testing procedures and acceptance grades.
Scope: All rotodynamic (centrifugal, mixed flow, axial flow) pumps
Key Requirements: Flow, head, power, efficiency measurement at multiple points. Acceptance grades: Grade 1 (precision), Grade 2 (standard), Grade 3 (basic)
Typical Applications: Factory acceptance testing (FAT), performance verification, contract compliance
Current Edition: ISO 9906:2012
Shaft Sealing Systems for Centrifugal and Rotary Pumps. Standard for mechanical seal systems used in petroleum, petrochemical, and gas industry services.
Scope: Mechanical seals, seal support systems, and seal chambers
Key Requirements: Seal configurations (Type A/B/C), arrangements (single/dual/tandem), flush plans (Plan 11, 23, 32, 53A/B, 54), 25,000 hours minimum life
Typical Applications: Refinery pumps, petrochemical process, hazardous fluid service
Current Edition: API 682 4th Edition (2019)
Pressure Equipment Directive (PED) 2014/68/EU. European regulatory requirement for pressure equipment, including pumps with pressure-containing parts.
Scope: Equipment with maximum allowable pressure above 0.5 bar
Key Requirements: Design, manufacturing, testing, and documentation per hazard categories (I, II, III, IV). CE marking required for EU market access.
Typical Applications: All pumps exported to European Union
Current Edition: PED 2014/68/EU (effective 2016)
Equipment for Explosive Atmospheres (2014/34/EU). European directive for equipment used in potentially explosive atmospheres (gas, vapor, mist, dust).
Scope: Equipment and protective systems for explosive atmospheres
Key Requirements: Equipment category (1/2/3 for gas, 21/22/23 for dust), temperature class (T1-T6), ignition protection type, Ex marking
Typical Applications: Oil & gas, chemical, pharmaceutical, grain handling, paint manufacturing
Current Edition: ATEX 2014/34/EU
Our engineering team can specify pumps meeting API 610, ISO 2858, ANSI, 3-A, and other international standards with full documentation.
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