SIST EN ISO 5175-2:2018 PDF

Name: SIST EN ISO 5175-2:2018 — Gas welding equipment - Safety devices - Part 2: Not incorporating a flame (flashback) arrestor (ISO 5175-2:2017)
SKU: SIST EN ISO 5175-2:2018
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Gas welding equipment - Safety devices - Part 2: Not incorporating a flame (flashback) arrestor (ISO 5175-2:2017)

Название (английский):

SIST EN ISO 5175-2:2018

Gas welding equipment - Safety devices - Part 2: Not incorporating a flame (flashback) arrestor (ISO 5175-2:2017)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 18
Дата публикации:: 12 января 2018 г.
ICS:: 25.160.30
Технический комитет:: VAR - Welding

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Цена:270 €

Описание (английский):

ISO 5175-2:2017 specifies the general requirements and tests for safety devices for fuel gases and oxygen or compressed air which do not incorporate a flame (flashback) arrestor used downstream of manifold, cylinder and/or pipeline outlet regulators, and upstream of blowpipes for welding, cutting and allied processes. ISO 5175-2:2017 does not specify the location of these devices in the gas system. ISO 5175-2:2017 in not applicable to safety devices which incorporate a flame arrestor, covered by ISO 5175‑1.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

EN ISO 5175-2:2017 (Corrected version 2019-01) - published by CEN - specifies general requirements and type tests for safety devices used with fuel gases and oxygen or compressed air in gas welding equipment that do not incorporate a flame (flashback) arrestor. The standard applies to devices installed downstream of manifold, cylinder and/or pipeline outlet regulators and upstream of blowpipes for welding, cutting and allied processes. It does not prescribe installation location in the gas system and is not applicable to devices that include a flame arrestor (see ISO 5175‑1).

Keywords: EN ISO 5175-2:2017, gas welding equipment, safety devices, flashback arrestor, CEN.

Key topics and technical requirements

Scope and definitions: terminology aligned with ISO 15296 (vocabulary) and definitions for non-return valves, pressure relief valves, excess-flow cut-off valves and multifunctional safety devices.

Design and materials:

Threaded connections up to G1 per EN 560; quick-release couplings per ISO 7289.
Materials to conform to ISO 9539.

Required safety functions:

Non-return (check) valves to prevent reverse gas flow.
Pressure relief valves to vent at predetermined overpressure and re-seal.
Excess-flow cut-off valves to stop flow when a preset flow is exceeded.
Multifunctional devices combining two or more functions.

Performance and testing:

Type tests for gas tightness, pressure resistance, valve function tests (non-return, relief, excess-flow), and internal leakage where applicable.
Test methods, measurement accuracy and recommended test gases are specified.

Documentation and marking:

Manufacturer’s instructions and marking requirements are included to ensure safe selection and use.

Informative annexes: gas flow measurement (Annex A) and third-party testing guidance (Annex B).

Keywords: gas tightness test, pressure resistance, excess flow cut-off, non-return valve test, type testing.

Applications and users

Manufacturers of gas welding safety devices and multifunctional units - for product design, type testing and compliance.

Test laboratories and certification bodies - for conducting required performance and safety tests.

Welding equipment suppliers and OEMs - to specify compliant safety devices for regulators, manifolds and blowpipes.

Safety engineers, procurement and maintenance teams - to verify device suitability, marking and manufacturer instructions for welding, cutting and allied processes.

Regulators and standards committees - for harmonised safety requirements across CEN member countries.

Keywords: welding safety, equipment testing, regulator downstream devices.

Related standards

This standard is essential where gas safety device performance and consistent testing are required but does not substitute for installation rules or device placement in gas systems.

SIST EN ISO 5175-2:2018 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and users

Related standards

Технические детали

ISO 5175-2:2017

Gas welding equipment — Safety devices — Part 2: Devices not incorporating a flame (flashback) arrestor

ISO 5175-1:2017

Gas welding equipment — Safety devices — Part 1: Devices incorporating a flame (flashback) arrestor

SIST EN ISO 5175-1:2018

Gas welding equipment - Safety devices - Part 1: Devices incorporating a flame (flashback) arrestor (ISO 5175…

SIST EN ISO 15296:2018

Gas welding equipment - Vocabulary (ISO 15296:2017)

ISO 7289:1996

Quick-action couplings with shut-off valves for gas welding, cutting and allied processes

ISO 9539:2010/Amd 1:2013

Gas welding equipment — Materials for equipment used in gas welding, cutting and allied processes — Amendment…

SIST EN ISO 9090:2020

Gas tightness of equipment for gas welding and allied processes (ISO 9090:2019)

ISO 2503:2009/Amd 1:2015

Gas welding equipment — Pressure regulators and pressure regulators with flow-metering devices for gas cylind…