ISO 5771:2024 PDF

Name: ISO 5771:2024 — Rubber hoses and hose assemblies for transferring anhydrous ammonia — Specification
SKU: ISO 5771:2024
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Rubber hoses and hose assemblies for transferring anhydrous ammonia — Specification

Название (английский):

ISO 5771:2024

Rubber hoses and hose assemblies for transferring anhydrous ammonia — Specification

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 13
Дата публикации:: 10 апреля 2024 г.
Издание:: ISO IS 5771 edition 4 version 1
ICS:: 71.120.99

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Описание (английский):

This document specifies the minimum requirements for rubber hoses used for transferring ammonia, in liquid or in gaseous form, at ambient temperatures from −40 °C up to and including +55 °C at a working pressure of 2,5 MPa (25 bar). It does not include specifications for end fittings and is limited to the performance of the hoses and hose assemblies.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 5771:2024 - "Rubber hoses and hose assemblies for transferring anhydrous ammonia - Specification" defines minimum performance requirements for rubber hoses and hose assemblies intended for transferring anhydrous ammonia (liquid or gas) at ambient temperatures from −40 °C to +55 °C and a working pressure of 2.5 MPa (25 bar). The standard addresses hose construction, materials, dimensional limits, physical properties and required tests. It is limited to hose and hose-assembly performance and does not specify end fittings.

Key topics and requirements

Pressure ratings

Maximum working pressure: 25 bar (2.5 MPa)
Proof pressure: 63 bar (6.3 MPa)
Minimum burst pressure: 125 bar (12.5 MPa)

Temperature range: −40 °C to +55 °C for service and testing (low-temperature flexibility tested to −40 °C).

Materials & construction

Lining minimum thickness: 1.5 mm, free from porosity and defects; resistant to ammonia-induced hardening.
Reinforcement: material resistant to ammonia permeation; corrosion‑resistant stainless steel cited as suitable.
Cover: gas‑tight covers to be pin‑pricked (≥40 effective pinholes per metre) to allow gas release without penetrating the lining.
Hose assemblies: only hoses conforming to ISO 5771 may be used; permanently attached ferrous‑metal fittings are required.

Dimensions & tolerances

Specified nominal inside diameters and permitted ID ranges (examples: 12.5 mm up to 76 mm nominal sizes).
Concentricity limit: ≤ 1.0 mm for IDs up to 76 mm.

Physical & performance tests

Tensile and elongation (ISO 37) for lining/cover compounds: minimum tensile 7.0 MPa, minimum elongation 250%.
Ageing (ISO 188:2023) and ammonia resistance conditioning tests.
Hydrostatic proof and burst tests (ISO 1402).
Adhesion tests (ISO 8033), ozone resistance (ISO 7326), low‑temperature bending (ISO 10619‑2).

Documentation & quality

Clauses cover marking, packaging, storage, type/routine test frequency (Annex A) and test certificates.

Applications and users

ISO 5771:2024 is relevant to:

Hose manufacturers designing and certifying hoses for anhydrous ammonia service.

Equipment specifiers and purchasers in agriculture (fertilizer handling), industrial refrigeration, chemical processing and transport.

Maintenance and safety engineers responsible for in‑service testing, marking and documentation of ammonia delivery systems.

Regulators and conformity assessors checking compliance with performance and testing requirements.

Related standards

ISO 1402 (hydrostatic testing)

ISO 37 (tensile/elongation)

ISO 188:2023 (ageing)

ISO 8033 (adhesion)

ISO 10619‑2 (low‑temperature bending)

ISO 7326 (ozone resistance)

ISO 8330 (vocabulary)

Keywords: ISO 5771:2024, rubber hoses, hose assemblies, anhydrous ammonia, 25 bar, ammonia resistance, hydrostatic testing, hose manufacturers, industrial refrigeration.

ISO 5771:2024 PDF

Abstract

Похожие стандарты

Overview

Key topics and requirements

Applications and users

Related standards

Технические детали

ISO 188:2023

Rubber, vulcanized or thermoplastic — Accelerated ageing and heat resistance tests

SIST EN ISO 5771:2024

Rubber hoses and hose assemblies for transferring anhydrous ammonia - Specification (ISO 5771:2024)

BS ISO 37108:2022

Sustainable cities and communities. Business districts. Guidance for practical local implementation of ISO 37…

ISO 14026:2017

Environmental labels and declarations — Principles, requirements and guidelines for communication of footprin…

SIST EN ISO 8033:2017

Rubber and plastics hoses - Determination of adhesion between components (ISO 8033:2016)

SIST EN ISO 7326:2016

Rubber and plastics hoses - Assessment of ozone resistance under static conditions (ISO 7326:2016)

SIST EN ISO 10619-2:2021

Rubber and plastics hoses and tubing - Measurement of flexibility and stiffness - Part 2: Bending tests at su…

SIST EN ISO 8330:2022

Rubber and plastics hoses and hose assemblies - Vocabulary (ISO 8330:2022)