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ISO 4126-3:2020

Safety devices for protection against excessive pressure — Part 3: Safety valves and bursting disc safety devices in combination

Publication date:   Sep 16, 2020

General information

60.60 Standard published   Sep 16, 2020

ISO

ISO/TC 185 Safety devices for protection against excessive pressure

International Standard

13.240   Protection against excessive pressure

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Scope

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. It specifies the design, application and marking requirements for such products, composed of the bursting disc safety device, a safety valve or CSPRS and, where applicable, a connecting pipe or spool piece. In addition, it gives a method for establishing the combination discharge factor used in sizing combinations.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 4126-3:2006

NOW

PUBLISHED
ISO 4126-3:2020
60.60 Standard published
Sep 16, 2020