Standard

SN EN ISO 4126-3:2021

Jan 2021 Current

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Abstract

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.

Products specifications

Standard from INB
Published: January 1 2021
Effective: January 1 2021
Document type: EN
Pages
ISBN:

ICS: 13.240
Publisher: SNV
Distributor: SNV
National Committee: INB/NK 132
European TC: CEN/TC 69
International TC: ISO/TC 185

Swiss Federal Authority: SECO
Designated under following Swiss law: 930.114
Designated under following EU law: Directive 2014/68/EU

Product Relations

Adopted from: ISO 4126-3:2020, IDT
Replaces: SN EN ISO 4126-3:2006

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