Safety devices for protection against excessive pressure - Part 1: Safety valves (ISO 4126-1:2013)

This technical document outlines the requirements for safety valves designed to prevent overpressure in various systems. It establishes critical criteria for the selection, design, testing, and examination of these essential protective devices. The content focuses on defining performance specifications that ensure valves function correctly under defined pressure conditions. It addresses the operational principles necessary to maintain system integrity and safety by reliably releasing excess pressure before it reaches dangerous levels. The scope includes provisions applicable to steam, liquid, and gas media within industrial and commercial applications. Detailed procedures for verification are provided to confirm that the devices meet established safety benchmarks. This standard serves as a foundational reference for manufacturers and engineers involved in the development of pressure protection systems. It ensures consistency in the manufacturing process and facilitates international cooperation by aligning with globally recognized technical guidelines. The document emphasizes the importance of accurate calibration and regular inspection to guarantee long-term reliability and operational safety across diverse industrial environments.