. It provides the normative requirements for installing equipment like safety valves and controlled relief systems to ensure they function correctly as the final line of defense for static pressure equipment. ISO - International Organization for Standardization 1. Scope and Core Purpose
: This part of the standard applies to safety valves used to protect steam, gas, and liquid installations from excess pressure. It outlines the requirements for valves that are used in a wide range of applications, from simple, non-complex installations to more complex systems. Iso 4126-9 Pdf
ISO 4126-9 covers the installation and application of several types of safety devices, including: Iso 4126-9 Pdf