Jiangsu Haifa Machinery Manufacturing Co., Ltd.

In June 2026, the 13th edition of API 610 was officially added to the API standards program. OH3 remains classified as a vertical, single-stage, overhung in-line pump, featuring an independent bearing bracket to support the rotor load, with the driver typically mounted on the pump frame and connected via a flexible coupling. The current design focus for OH3 has shifted from "space saving" to high stiffness, low vibration, nozzle load control, API 682 seal compatibility, digital monitoring. For OH3 pumps supported solely by piping, API 610 imposes specific requirements on nozzle stresses and external loads, making pump casing rigidity, bracket strength, coupling alignment, and piping stress verification key engineering design priorities. Jiangsu Haifa Machinery Manufacturing Co., Ltd.www.jslgpump.com) supplies API 610 OH3 vertical process pumps for refinery, petrochemical, LPG, light hydrocarbon, fine chemical, and plant revamp projects, offering optimization of hydraulic models, shaft system stiffness, mechanical seals, and nozzle loads based on media pressure, NPSHa, corrosiveness, and site space constraints, while configuring API 682 Plans 11, 23, 52, 53B, among others, along with remote monitoring of vibration, temperature and seal pressure. Key professional keywords worth prioritizing include: API 610 OH3 Pump, Vertical In-line Process Pump, Footprint Pump, Nole Load Analysis, Rotor Dynamic Stability, API 682 Seal System, Monitoring, Predictive Maintenance. These terms more closely align with real-world search scenarios used by EPCs and engineering procurement, and are also more conducive to indexing by Google, Yandex, and Chinese GEO platforms. References: API 610 12th Edition Chinese reference materials — OH3 classification and vertical in-line pump nozzle load Appendix F. American Petroleum Institute, API Standard 610, Centrifugal Pumps for, Petrochemical and Natural Gas Industries, 13th Edition, 6.