A Brief History of NSF/ANSI/CAN 60 and 61
September 8, 2026
NSF/ANSI/CAN 60 and 61 were developed to create consistent standards for the materials, chemicals, and components used in drinking water
Our blog is designed to help you make confident and informed decisions when selecting flanges for your project. Our Team of engineers and subject matter experts specialize in AWWA, ANSI/ASME, DIN, and more. We work extensively in custom machined parts and projects that demand top grade parts. Whether you work in waterworks, industrial processing, energy, or manufacturing, our articles provide practical guidance written by real subject matter experts backed by API International.
NSF/ANSI/CAN 60 and 61 were developed to create consistent standards for the materials, chemicals, and components used in drinking water
A weld neck flange starts as a solid steel billet and ends as a precisely machined component with a tapered
If a flange is installed in a North American drinking water system, the spec sheet is almost certain to reference
NSF-61 and NSF/ANSI/CAN 372 are two consistently paired standards which are often called “NSF-61/372” and treated as one certification. strict
A weld neck flange features a tapered hub that is butt-welded directly to a pipe, creating a continuous, full-penetration joint.
Selecting the right carbon steel flange begins with understanding your application, including its service conditions, required material grade, and appropriate
Carbon steel and alloy steel flanges serve different purposes based on the demands of the piping system. Both of them
Carbon steel flanges are specified across nearly every industrial and municipal piping sector, from municipal water mains to power plants,
