In the petrochemical industry, the selection, design, and operation of chemical pumps need to adhere to a series of standards and specifications to ensure safety, reliability, and performance. Here are some common standards and specifications for chemical pumps:

1.API Standards (American Petroleum Institute):

API 610: Standard for centrifugal pumps, covering various applications including oil, petrochemicals, natural gas, and chemicals.

API 674: Standard for reciprocating (positive displacement) pumps, used for high viscosity or high-pressure applications.

API 675: Standard for screw pumps, used for metering and mixing applications.

API 676: Standard for gear pumps, suitable for high-flow and low-viscosity fluids.

API 682: Standard for mechanical seals and seal systems.

2.ANSI Standards (American National Standards Institute):

ANSI B73.1: Standard specification for chemical process pumps.

ANSI B73.2: Standard specification for screw pumps.

ANSI B73.3: Standard specification for centrifugal pumps.

ANSI B73.4: Standard specification for gear pumps.

3.ISO Standards (International Organization for Standardization):

ISO 5199: International standard for chemical pumps, similar to API 610.

ISO 2858: International standard covering standard centrifugal pumps.

ISO 4072: International standard for positive displacement pumps.

ISO 15783: International standard for gear pumps.

4.NEMA Standards (National Electrical Manufacturers Association):

NEMA MG 1: Standard for the interaction of motors and pumps.

5.ASME Standards (American Society of Mechanical Engineers):

ASME B73.1: Specification for chemical process pumps.

ASTM Standards (American Society for Testing and Materials):

ASTM D396: Standard specification for fuel oils, applicable to fuel oil pumps.

6.HI Standards (Hydraulic Institute):

HI 1.1-1.2: Standards for centrifugal pumps.

HI 3.1-3.5: Standards for positive displacement pumps.

HI 9.6.6: Standards for screw pumps.

7.National and Regional Standards:

Different countries and regions may have their own pump standards and specifications, which should be for specific applications.

These standards and specifications cover various aspects of the design, manufacturing, installation, operation, and maintenance of chemical pumps. When selecting, purchasing, and operating chemical pumps, it is essential to comply with the relevant standards and specifications to ensure that the pump's performance, reliability, and safety meet the requirements. Additionally, working with professional engineers and pump manufacturers is advisable to meet the specific needs of your application.