EN ISO 7751:2016

Rubber and plastics hoses and hose assemblies - Ratios of proof and burst pressure to maximum working pressure (ISO 7751:2016)

ISO 7751:2016 specifies ratios of proof pressure and minimum burst pressure to maximum working pressure for various categories of hose service.

Gummi- und Kunststoffschläuche und -schlauchleitungen - Verhältnisse von Prüf- und Berstdruck zur Auslegung des maximalen Betriebsdruckes (ISO 7751:2016)

Dieses Dokument legt die Verhältnisse von Prüf- und Mindestberstdruck zum maximalen Betriebsdruck für verschiedene Betriebsarten eines Schlauches fest.

Tuyaux et flexibles en caoutchouc et en plastique - Rapports des pressions d'épreuve et de rupture à la pression maximale de service (ISO 7751:2016)

ISO 7751:2016 spécifie les rapports de la pression d'épreuve et de la pression minimale de rupture à la pression maximale de service, pour les différents types d'usage des tuyaux.

Gumene in polimerne cevi ter cevni priključki - Razmerje med preskusnim in razpočnim tlakom ter največjim delovnim tlakom (ISO 7751:2016)

Ta dokument določa razmerja med preskusnim in najnižjim razpočnim tlakom ter največjim delovnim tlakom za različne kategorije uporabe cevi.

General Information

• Status: Published
• Publication Date: 29-Nov-2016
• Withdrawal Date: 30-May-2017
• ICS: 23.040.70 - Hoses and hose assemblies
• Technical Committee: CEN/TC 218 - Rubber and plastics hoses and hose assemblies
• Drafting Committee: CEN/TC 218/WG 4 - Basic specifications and test methods for rubber and plastics hoses, hose assemblies and tubing
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 30-Nov-2016
• Completion Date: 30-Nov-2016
• Ref Project: SIST EN ISO 7751:2017 - Rubber and plastics hoses and hose assemblies - Ratios of proof and burst pressure to maximum working pressure (ISO 7751:2016)

Relations

• Replaces: EN ISO 7751:1997 - Rubber and plastics hoses and hose assemblies - Ratios of proof and burst pressure to design working pressure (ISO 7751:1991)
• Effective Date: 07-Dec-2016
• Replaces: EN ISO 7751:1997/A1:2011 - Rubber and plastics hoses and hose assemblies - Ratios of proof and burst pressure to maximum working pressure - Amendment 1 - Replacement of "design working pressure" by "maximum working pressure" throughout text (ISO 7751:1991/Amd 1:2011)
• Effective Date: 07-Dec-2016

Overview

EN ISO 7751:2016 is a key international standard specifying the ratios of proof pressure and minimum burst pressure to maximum working pressure for rubber and plastics hoses and hose assemblies. Developed by ISO/TC 45 and CEN/TC 218, this standard provides essential guidelines for ensuring the safety, reliability, and performance of hose products used in various industrial applications.

This standard supports manufacturers, testers, and users by defining critical pressure ratios that hoses must withstand under testing relative to their designed maximum working pressure. It replaces earlier editions and introduces updated terminology and an extended scope, including new categories such as hoses for delivering cement, concrete, plaster, and grout.

Key Topics

• Proof Pressure Ratio
  EN ISO 7751:2016 defines the ratio of proof pressure to maximum working pressure which hoses must endure during hydrostatic testing, typically carried out according to ISO 1402. Proof pressure testing verifies the structural integrity of the hose under pressure, confirming its safety for operational use.

• Minimum Burst Pressure Ratio
  The standard also specifies the minimum burst pressure ratio relative to maximum working pressure. Burst pressure tests assess the hose’s failure point, ensuring an adequate safety margin beyond normal operating conditions.

• Pressure Ratios for Hose Types
  The standard categorizes hoses by their intended service and prescribes guidance ratios for each type:

  • Water hoses with max working pressure ≤ 1 MPa: proof pressure ratio 1.5, minimum burst 3.0
  • Hoses for liquids, solids in liquids, or air (≥ 1 MPa): proof ratio 2.0, burst ratio 4.0
  • Hoses for compressed air and gases: proof ratio 2.0, burst ratio 4.0
  • Hoses for media that vaporize under pressure reduction: proof ratio 2.5, burst ratio 5.0
  • Steam hoses: proof ratio 5.0, burst ratio 10.0
  • Jetting hoses: proof ratio 1.5, burst ratio 2.5
  • Hoses for cement, concrete, plaster, and grout delivery: proof ratio 1.5, burst ratio 2.0

• Scope and Terminology Updates
  The term "maximum working pressure" supersedes "design working pressure" to align with modern usage. The standard references ISO 8330 for consistent vocabulary.

Applications

EN ISO 7751:2016 is applicable across a broad range of industries where rubber and plastic hoses are critical components:

• Industrial Fluid Transfer
  Ensuring hoses transporting liquids, slurries, and air meet rigorous proof and burst pressure performance for safe and uninterrupted operation.

• Construction and Mining
  Specialized hoses for delivering cement, concrete, plaster, and grout in construction settings require defined pressure margins to support heavy-duty pumping equipment.

• Oil and Gas
  Hoses exposed to gaseous media or steam benefit from higher proof and burst ratios to withstand challenging pressure and temperature conditions.

• Agriculture and Irrigation
  Water hoses designed under this standard offer dependable pressure ratings suited for irrigation systems and water transfer.

• Cleaning and Jetting Services
  Jetting hoses used in high-pressure cleaning applications rely on EN ISO 7751’s guidelines to maintain safety during intense operating pressures.

Related Standards

• ISO 1402 – Rubber and plastics hoses and hose assemblies - Hydrostatic testing
  Specifies the testing methods referenced for proof and burst pressure verification.

• ISO 8330 – Rubber and plastics hoses and hose assemblies - Vocabulary
  Defines terminology used within EN ISO 7751 for clear communication and consistency.

• ISO 3862 – Rubber hoses and hose assemblies - Wire braids and plaits for reinforcement
  Addresses reinforcement materials that impact hose pressure performance.

• EN ISO 4649 – Rubber, vulcanized or thermoplastic - Determination of abrasion resistance
  Relevant for assessing hose durability under mechanical stress alongside pressure requirements.

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EN ISO 7751:2016 is vital for manufacturers and users of rubber and plastics hoses seeking compliance with European and international safety standards. Understanding and applying the specified pressure ratios ensures hoses operate safely within their limits, preventing failures and contributing to industrial efficiency and worker safety.

Standards Content (Sample)

SLOVENSKI STANDARD
01-februar-2017
1DGRPHãþD
SIST EN ISO 7751:2000
SIST EN ISO 7751:2000/A1:2014
*XPHQHLQSROLPHUQHFHYLWHUFHYQLSULNOMXþNL5D]PHUMHPHGSUHVNXVQLPLQ
UD]SRþQLPWODNRPWHUQDMYHþMLPGHORYQLPWODNRP,62
Rubber and plastics hoses and hose assemblies - Ratios of proof and burst pressure to
maximum working pressure (ISO 7751:2016)
Gummi- und Kunststoffschläuche und -schlauchleitungen - Verhältnisse von Prüf- und
Berstdruck zum Betriebsdruck (ISO 7751:2016)
Tuyaux et flexibles en caoutchouc et en plastique - Rapports des pressions d'épreuve et
d'éclatement à la pression maximale de service (ISO 7751:2016)
Ta slovenski standard je istoveten z: EN ISO 7751:2016
ICS:
23.040.70 Gumene cevi in armature Hoses and hose assemblies
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 7751
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2016
EUROPÄISCHE NORM
ICS 23.040.70 Supersedes EN ISO 7751:1997
English Version
Rubber and plastics hoses and hose assemblies - Ratios of
proof and burst pressure to maximum working pressure
(ISO 7751:2016)
Tuyaux et flexibles en caoutchouc et en plastique - Gummi- und Kunststoffschläuche und -
Rapports des pressions d'épreuve et de rupture à la schlauchleitungen - Verhältnisse von Prüf- und
pression maximale de service (ISO 7751:2016) Berstdruck zum Betriebsdruck (ISO 7751:2016)
This European Standard was approved by CEN on 9 October 2016.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 7751:2016 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 7751:2016) has been prepared by Technical Committee ISO/TC 45 "Rubber and
rubber products " in collaboration with Technical Committee CEN/TC 218 “Rubber and plastics hoses
and hose assemblies” the secretariat of which is held by BSI.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by May 2017, and conflicting national standards shall be
withdrawn at the latest by May 2017.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent
rights.
This document supersedes EN ISO 7751:1997.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 7751:2016 has been approved by CEN as EN ISO 7751:2016 without any modification.

INTERNATIONAL ISO
STANDARD 7751
Third edition
2016-11-01
Rubber and plastics hoses and hose
assemblies — Ratios of proof and
burst pressure to maximum working
pressure
Tuyaux et flexibles en caoutchouc et en plastique — Rapports des
pressions d’épreuve et de rupture à la pression maximale de service
Reference number
ISO 7751:2016(E)
©
ISO 2016
ISO 7751:2016(E)
© ISO 2016, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
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written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
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ii © ISO 2016 – All rights reserved

ISO 7751:2016(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references .
...