UNI EN ISO 4126-3:2021
Current
The latest, up-to-date edition.
Safety devices for protection against excessive pressure - Part 3: Safety valves and bursting disc safety devices in combination
18-02-2021
This document specifies only the requirements for a product assembled from the in-series combination of safety valves or CSPRS (controlled safety pressure relief systems) according to ISO 4126‑1, ISO 4126‑4 and ISO 4126‑5, and bursting disc safety devices, according to ISO 4126‑2, installed upstream of the valve within five pipe diameters of the valve inlet.
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