The International Organization for Standardization (ISO) has published a series of standards for safety valves used in pressure equipment. One such standard is ISO 4126-9:2019, which specifically deals with the safety requirements for safety valves used in protection of pressure equipment. In this post, we will discuss the key aspects of ISO 4126-9:2019 and its significance in ensuring the safety of pressure equipment.
The standard applies to several categories of pressure relief equipment, including: Standard pressure-activated valves. Iso 4126-9 Pdf
The standard differentiates between: