NBN EN ISO 4126-3:2020

Safety devices for protection against excessive pressure - Part 3: Safety valves and bursting disc safety devices in combination (ISO 4126-3:2020)

ACTIVE

About this standard

Languages
German, English and French
Type
NBN
Standards committee
CEN/TC 69
Status
ACTIVE
Publication date
22 October 2020
Replaces
NBN EN ISO 4126-3:2006
ICS Code
13.240 (Protection against excessive pressure)
Withdrawn Date

About this training

Summary

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.