How API 675 Standards Ensure Reliability in Chemical Injection Systems

On offshore drilling platforms and in chemical plants, chemical injection pumps are core equipment ensuring stable production and preventing process abnormalities. They are required to continuously convey corrosive, high pressure hazardous chemicals over long periods. The API 675 standard is specifically designed for positive displacement metering pumps, regulating multiple critical aspects of the design and manufacture of chemical injection pumps, thereby ensuring the overall reliability of chemical injection systems.

1. What is API 675?

API 675, formally titled *Positive Displacement Pumps—Controlled Volume for Petroleum, Chemical, and Gas Industry Services*, is an industry standard published by the American Petroleum Institute (API) that establishes uniform technical requirements for positive displacement metering pumps used in the oil and gas and petrochemical sectors. Compared to general industrial metering pump standards, it imposes stricter requirements across multiple dimensions for chemical injection applications under severe operating conditions. It is widely used in high-risk chemical production scenarios such as offshore oil and gas extraction and onshore refining and petrochemical processing.

2. Reliability

API 675 establishes a comprehensive regulatory framework centered on reliability standards, covering everything from design and manufacturing to material selection and testing controls. Addressing the high pressure, corrosive, and continuous operating conditions typical of the petrochemical industry, it clearly defines technical specifications for positive displacement metering pumps at every stage from production to shipment, providing standardized assurance for the stable operation of chemical injection systems in high-risk chemical environments.

3. Standardization

API 675 requires that every aspect of metering pumps meet design requirements for high pressure and continuous operation. It specifies performance requirements for materials used in pressure-bearing and flow-through components based on the corrosion characteristics of different chemical agents and the pressure ratings of specific operating environments, mandating that materials meet minimum standards for chemical resistance and pressure strength. Products must undergo standardized performance testing prior to shipment, and a comprehensive quality control system must be established.

API 675 is not just a standard; it is a safeguard for industrial production. Elephant Machinery’s chemical injection pumps are manufactured in strict accordance with the API 675 standard and are backed by a comprehensive quality management system.