Stricter guidelines for performance and NPSH testing.

A Chinese industry report published in January 2026 notes that “API STD 610 13th Edition is already on its way,” and even in draft form, it is worth understanding the trends of its changes. That same analysis observes that the hoped‑for merger with API 685 (magnetic‑drive sealless pumps) has not yet materialized in the draft, meaning consolidation of the two standards remains a longer‑term aspiration rather than an immediate change.

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Review your current pump data sheets (vendor datasheets, not just purchase orders). Identify pumps that fail the new thermal flow or vibration criteria. These are candidates for retrofit or replacement.

: The 13th edition is currently undergoing technical review and balloting by API committees. It is not yet a published, final standard.

The API 610 13th Edition is not merely a bureaucratic update. It is a direct response to real-world failures—pump fires from seal leaks, cracked baseplates leading to shaft fractures, and unplanned shutdowns costing millions per day.

Operators should work closely with manufacturers to review all technical data sheets, performance curves, and material test reports (MTRs) to ensure absolute compliance with the mandatory clauses of the 13th Edition. If you'd like, let me know:

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The most common pump in refineries is the OH2 (centerline-mounted, overhung, single-stage). The 13th Edition tightens:

pump = API610PumpVerification("Centrifugal OH2 Pump") pump.check_edition(13) pump.check_nozzle_loads(True) pump.check_minimum_continuous_flow(150, 200) pump.check_lube_system("oil mist") pump.check_seal_chamber_pressure(280, 300) print(pump.full_report())

For services involving hydrogen sulfide (sour service), API 610 mandates materials that comply with (“Petroleum, petrochemical and natural gas industries – Materials for use in H₂S‑containing environments in oil and gas production”). The standard includes material selection tables (e.g., Table H) covering casings, impellers, shafts, and fasteners, with specific grades of carbon steel, stainless steel, and duplex stainless steel. The 13th Edition may update these tables to reflect newer alloys and stricter environmental regulations.

As of early 2026, the . The active official version remains API Standard 610, 12th Edition (2021) . When the 13th Edition is released, it will be available for purchase through the API Publications Store (api.org) and authorized resellers such as IHS Markit, Intertek Inform, and national standards bodies. Electronic (PDF) and printed copies will be offered. Users should beware of unofficial “free downloads” from third‑party websites, as these may be outdated, incomplete, or contain errors.

The updated standard is important for several reasons:

API 610 mandates that casings are designed for the specified pressure and temperature, with defined wall thicknesses and corrosion allowances. For pumps handling hazardous fluids, the casing must be designed for integrity, preventing leakage to the atmosphere.