What is the difference between American standard and national standard valves
American Standard valves follow the standards set by the American National Standards Institute (ANSI), whereas National Standard valves refer to the standards set by various organizations in different countries.
AS valves are often used in the US, whereas NS valves are used in various countries across the world.
The AS valve sizes range from 1/8 inches to 12 inches, while the NS valve sizes can range from 6 mm (1/4 inch) to 900 mm (36 inches).
AS valves are made from materials that comply with ANSI standards and are designed for specific applications. NS valves are generally made from materials that comply with national standards set by their respective countries.
AS valves have a maximum pressure rating of 600 PSI, whereas NS valves can have higher pressure ratings.
AS valves are intended for use in various applications like plumbing, HVAC, firefighting, and irrigation, whereas NS valves are used in multiple industries, including oil and gas, water treatment, and chemical processing.
In conclusion, while both American Standard and National Standard valves are designed to meet specific standards, the main differences are the materials, sizes, pressure ratings, and applications in which they are used.
