ASME B16.34

ASME B16.34 – 2020 Edition – Valves – Flanged, Threaded and Welding End

ASME B16.34 is a standard published by the American Society of Mechanical Engineers (ASME) titled “Valves – Flanged, Threaded, and Welding End.” This standard provides specifications for the design, manufacturing, testing, and acceptance of flanged, threaded, and welding end valves. It is widely recognized in the industry and is essential for ensuring the quality and performance of various types of industrial valves.

Here are some key aspects covered by ASME B16.34:

1. Scope: The standard applies to a variety of valve types, including gate, globe, check, ball, and plug valves, with flanged, threaded, and welding end connections.
2. Design Requirements: ASME B16.34 outlines the design criteria for valves, ensuring that they meet certain specifications such as pressure-temperature ratings, materials of construction, and dimensions.
3. Material Requirements: The standard provides guidelines for selecting suitable materials for valve components, taking into account factors like pressure, temperature, and the nature of the fluids being handled.
4. Pressure-Temperature Ratings: ASME B16.34 establishes pressure-temperature ratings for valves, helping users determine the acceptable working conditions for a given valve based on its design and material specifications.
5. Testing and Inspection: The standard sets forth testing and inspection procedures to ensure the quality and integrity of valves. This includes tests for pressure, leakage, and other critical performance factors.
6. Marking and Identification: ASME B16.34 specifies the requirements for marking and identifying valves, allowing users to easily determine the valve type, size, pressure rating, and other essential information.
7. Documentation: The standard outlines the documentation requirements for manufacturers, including the preparation of material test reports and other relevant records.

ASME B16.34 plays a crucial role in promoting consistency and reliability in the design and manufacturing of valves, contributing to the overall safety and performance of industrial processes that rely on these components. It is commonly referenced in the procurement and specification of valves across various industries.

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