API 674 Standards for Jetting Pumps

In high pressure and ultra high pressure water jetting operations, equipment must withstand continuous high-frequency impulses and extreme pressures. Ordinary industrial pumps suffer from high failure rates and maintenance costs, while API 674 stands as the acknowledged highest standard in the high pressure jetting pump sector.

1. What Is the API 674 Standard?

API 674 is a technical specification established by the American Petroleum Institute for the design, manufacture, testing, and acceptance of positive displacement reciprocating pumps. Applicable to liquid-transfer pumps, it is widely used in industrial scenarios requiring high pressure and high reliability. The standard sets systematic requirements—including structural strength—to ensure long-term stable operation, reduce failure risks, and extend service life.

2. Engineering Design Requirements of API 674

• The pump body shall have a complete and reliable structure, with critical pressure-containing components subjected to rigorous stress analysis and fatigue life assessment.
• Materials shall meet requirements for corrosion resistance, fatigue resistance, and high-temperature/high pressure mechanical properties, with clear specifications for casting/forging quality grades and NDT (nondestructive testing) standards.
• The sealing system shall ensure leak-tight performance under rated operating conditions and transient overpressure. Specific targets are set for power-end and fluid-end alignment accuracy, bearing selection, and lubrication methods.
• Requirements cover vibration limits, noise control, and safety protection device configurations to ensure continuous operational stability and operator safety.

3. How to Choose a Suitable API 674 Jet Pump Manufacturer

When selecting an API 674 jetting pump manufacturer, beyond evaluating their compliance with design and manufacturing standards, key considerations should include skid-mount integration capability and customization responsiveness. A qualified manufacturer should offer complete skid-mounted solutions, integrating multiple components onto a unified base with factory-level testing to ensure easy installation and coordinated operation. To address varying operating conditions, the manufacturer should demonstrate rapid customization capabilities—flexibly adjusting configurations within the API 674 framework, rather than offering only fixed-model products. Furthermore, robust technical support and full-lifecycle service capabilities are essential to ensure long-term equipment reliability.

Elephant Machinery specializes in the R&D and manufacturing of API 674-compliant triplex and quintuplex high pressure plunger pumps and skid-mounted systems. For applications such as pipeline cleaning and industrial water injection, our engineering team can provide customized technical data sheets and integrated solutions.