Valve Standards Summary（Part II）
Valves are a key component of modern industrial processes. Due to the complexity of many valves and their operating environments, industry standards have been developed to ensure safety and performance. There are a number of both international and national valve standards that govern their manufacturing and use. This article reviews the current international and national standards for valves.
International standards
ASME
The American Society of Mechanical Engineers publishes standards that govern the design, fabrication, and operation of various industrial and commercial valves. Power plant valves, for example, have specific tests, inspections, and certifications under ASME standards.
ASTM
The American Society for Testing and Materials standardizes all sorts of industrial materials, equipment, and components, including valves. The ASTM standard for valves covers design and testing, as well as requirements for materials and components.
ISO
The International Organization for Standardization develops international standards for many different types of valves. ISO 5208 is a standard for safety valves, while ISO 15377 is a slightly more specific standard for industrial valves.
NATO
The NATO standards cover the procurement of valves in both military and civilian applications. The standards specify materials requirements, platform compatibility, and testing requirements, as well as other specific requirements.
National standards
API
The American Petroleum Institute has several standards that deal specifically with valves. These standards cover valves used in drilling and processing operations, such as wellhead valves, pressure relief valves, and others.
AWWA
The American Water Works Association is one of the most commonly seen American standards for valves used in both residential and commercial water systems. These standards cover a wide range of valves that are used in water supply and wastewater systems.
ASTM F1807
This standard covers plastic molded valves and fittings used in drinking water systems. It outlines requirements for design, materials, and testing, as well as installation and performance specifications.
NES
The National Electrical Standard is the most widely recognized standard for valves used in electrical power systems. The standard covers requirements for valve systems, including materials, tests, and inspections.
ISEA
The InterNational Electric Authority has several standards for materials used in hazardous gas and vapors applications. These standards cover requirements for construction, performance, and testing of valves that are intended for use in hazardous environments.
Conclusion
Valves are critical components of many processes, and as such, they must adhere to strict design, materials, and testing requirements. To ensure that these requirements are met, various international and national standards have been developed. This article provided an overview of the major international and national standards for valves.
