Gate Valves Standards
Gate valves are a type of cylinder shaped valve commonly used in industrial and commercial applications, including plumbing and industrial pipes. The valves most distinct feature is a rectangular or round gate that is operated using a disk or blade to open or close off a passage. In addition, gate valves require pressure to be applied from both upstream and downstream, which aids in creating a tight seal after the valve is opened or closed. Gate valves are designed for a variety of settings and can be used with a wide range of liquids, gases, and even steam.
Due to the broad range of settings gate valves can be used in and the various materials they can work with, the valve industry has established several standards to ensure the valves are safe, effective, and reliable. The following are a few of the most common gate valve standards used in the industry:
American Society of Mechanical Engineers (ASME)
The American Society of Mechanical Engineers (ASME) is an engineering professional publisher that establishes industry standards for various types of mechanical systems, components, and processes. In terms of gate valves, ASME provides standards for a variety of components and features, including body length, face-to-face dimensions, packing, stem seals, and bonnet length.
American Petroleum Institute (API)
The American Petroleum Institute (API) is an organization of upstream, downstream, and midstream companies that develop standards for the oil and gas industries. API standards cover many topics, from safety and environmental regulations to engineering and design. For instance, API has established standards for the design and testing of ball, check, and gate valves used in oil and gas fields. API Standards 640 and 641, for example, address ball valves, while API Specification 6D details requirements for gate valves.
ISO 5208
ISO 5208 is an International Organization for Standardization (ISO) document that provides minimum requirements and methods of testing for resilient-seated gate valves. Resilient-seated valve designs use a flexible material, such as rubber or other elastomer, to achieve a tight seal and reduce maintenance requirements. Per ISO 5208, the resilient material must be interchangeable with previously obtained replacements. This standard is frequently used for the design of water systems, like pipelines, coolant, and irrigation.
BS 5352
BS 5352 is a British Standard (BS) established by the British Standards Institute that sets minimum requirements for gate valves. It is similar to the ASME standards in that it specifies the requirements for body length and face-to-face dimensions, as well as other components such as packing, stem seals, and bonnet length. BS 5352 gate valves are tested to ensure they are able to endure extreme pressures and temperatures, as well as minimize noise and vibration levels.
Conclusion
Gate valves are a common type of valve used in industrial and commercial settings. To ensure the valves are safe and effective, the valve industry follows several standards, including those established by ASME, API, ISO, and BS. Following these standards ensures gate valves are reliable and capable of performing in a variety of settings.
