ISO 5145:2017

Name: ISO 5145:2017 — Gas cylinders — Cylinder valve outlets for gases and gas mixtures — Selection and dimensioning
SKU: ISO 5145:2017
Price: 25 EUR
Availability: InStock

Gas cylinders — Cylinder valve outlets for gases and gas mixtures — Selection and dimensioning

Название (английский):

ISO 5145:2017

Gas cylinders — Cylinder valve outlets for gases and gas mixtures — Selection and dimensioning

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 27
Дата публикации:: 28 ноября 2017 г.
Издание:: ISO IS 5145 edition 4 version 1
ICS:: 23.020.30

Тип поставки:

Full version25 €Ask AI2 €Read online 24h10 €Read online 72h15 €

Язык документа:

ruen

Срок поставки:1 рабочий день

Цена:25 €

Описание (английский):

ISO 5145:2017 establishes practical criteria for determining valve outlet connections for gas cylinders. It applies to the selection of gas cylinder valve outlet connections and specifies the dimensions for a number of them. ISO 5145:2017 is not applicable to connections used for cryogenic gas withdrawal or gases for breathing equipment, which are the subjects of other International Standards. NOTE Other safeguard provisions like labelling or colour coding are not affected by this document.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 5145:2017 - Gas cylinders - Cylinder valve outlets for gases and gas mixtures - Selection and dimensioning - provides practical criteria for selecting and dimensioning valve outlet connections for gas cylinders. It defines a logical system that groups gases and gas mixtures and allocates non‑interchangeable valve outlet connections to those groups to reduce the risk of incorrect gas interconnection. The standard excludes connections used for cryogenic withdrawal and gases for breathing equipment, which are covered by other International Standards.

Key topics and technical requirements

FTSC coding and gas grouping: Uses the four‑digit FTSC code (see ISO 14456) to classify gases by flammability, toxicity, oxidizing ability, physical state and corrosiveness, enabling assignment to one of 15 compatible gas groups (group 15 reserved for specific mixtures).

Normative references: Selection relies on related standards for property determination - ISO 10156 (flammability/oxidizing), ISO 10298 (toxicity), ISO 13338 (corrosiveness), and ISO 14456 (FTSC codes).

Connection design principle: Defines a double‑recess “step index” system - valve outlet (faucet), connector (spigot) and union nut - engineered so connectors only fit the assigned group, ensuring non‑interchangeability.

Dimensional specifications: Specifies three nominal connection diameters (24 mm, 27 mm, 30 mm) and a Whitworth thread with a pitch of 2 mm, producing 42 non‑interchangeable combinations (see Annex A).

Leak tightness and sealing: Sealing is achieved by the connector end bearing on the valve outlet’s conical surface and retained by the union nut (Annex B gives guidance on union nuts requiring tools). Materials must be compatible with the gas but specific materials are not mandated.

Marking: Outlets and corresponding connections must be marked with the allocated outlet number (refer to Table 3).

Practical applications - who uses ISO 5145

Cylinder manufacturers and valve designers - to design and size valve outlets and connectors in accordance with internationally harmonized allocation rules.

Gas producers and filling stations - for correct valve selection when preparing cylinders for specific gases or mixtures.

Equipment installers and maintenance teams - to ensure safe, non‑interchangeable connections during use and servicing.

Regulators and safety engineers - to reference a practical allocation system where national standards are absent or when introducing new industrial gases.

Healthcare and industrial users - as guidance for grouping and connection selection (note: specific breathing‑equipment connections are outside this standard).

Related standards

ISO 10156, ISO 10298, ISO 13338, ISO 14456 - all used for property assessment and FTSC assignment. Annexes A, B (normative) and C (informative examples, including medical gases) provide dimensional tables and implementation guidance.

Keywords: ISO 5145, gas cylinders, cylinder valve outlets, valve outlet connections, FTSC code, step index connections, Whitworth thread, non‑interchangeable connections, leak tightness.

ISO 5145:2017

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Practical applications - who uses ISO 5145

Related standards

Технические детали

ISO 14456:2015

Gas cylinders — Gas properties and associated classification (FTSC) codes

BS EN ISO 10156:2017

Gas cylinders. Gases and gas mixtures. Determination of fire potential and oxidizing ability for the selectio…

BS EN ISO 10298:2020+A1:2022

Gas cylinders. Gas and gas mixtures. Determination of toxicity for the selection of cylinder valve outlets.

BS EN ISO 13338:2022

Gas cylinders. Gases and gas mixtures. Determination of corrosiveness for the selection of cylinder valve out…