FprEN 1762

• Abstract:

  This document specifies the requirements for rubber hoses and rubber hose assemblies used for the transfer of liquefied petroleum gas (LPG) in liquid or gaseous phase and natural gas with a maximum working pressure of 25 bar (2,5 MPa) and vacuum within the temperature range of −30 °C to +70 °C and, when designated -LT, −50 °C to +70 °C.

• Status: Not Published
• Publication Date: 20-Jan-2027
• 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 1 - Rubber and plastics hoses and hose assemblies for industrial, chemical and petrochemical applications
• Current Stage: 4599 - Dispatch of FV draft to CMC - Finalization for Vote
• Start Date: 31-Jul-2026
• Due Date: 06-Oct-2026
• Completion Date: 31-Jul-2026
• Ref Project: oSIST prEN 1762:2026 - Rubber hoses and hose assemblies for liquefied petroleum gas, LPG (liquid or gaseous phase), and natural gas up to 25 bar (2,5 MPa) - Specification

• Revises: EN 1762:2018 - Rubber hoses and hose assemblies for liquefied petroleum gas, LPG (liquid or gaseous phase), and natural gas up to 25 bar (2,5 MPa) - Specification
• Effective Date: 08-Jan-2025

Overview

FprEN 1762 is a draft European Standard developed by CEN that specifies the requirements for rubber hoses and hose assemblies designed for the transfer of liquefied petroleum gas (LPG) in both liquid and gaseous phases, as well as natural gas. Applicable to hoses with a maximum working pressure of 25 bar (2.5 MPa), this standard ensures safe and reliable operation within a temperature range of −30 °C to +70 °C, and, for hoses designated as -LT, down to −50 °C. FprEN 1762 is relevant to manufacturers, gas distributors, and stakeholders involved in gas storage, handling, and transport, providing clear specifications to ensure the safety, durability, and performance of rubber gas hoses and assemblies.

Key Topics

• Scope and Classification
  • Encompasses hoses and assemblies for LPG (liquid or gaseous) and natural gas transfer up to 25 bar.
  • Coverage includes suction and delivery hoses, helix-reinforced hoses, and low-temperature types.
• Hose Construction and Materials
  • Details the use of rubber compounds with high resistance to abrasion, weathering, and gas permeation.
  • Stipulates lining material resistant to chemicals like n-pentane.
  • Reinforcement may include textile or stainless steel wire braiding and an embedded or internal metallic helix for certain types.
  • Prohibits chlorinated materials in direct contact with stainless steel parts.
• Electrical Properties
  • Hoses are categorized by electrical characteristics: electrically bonded, electrically conductive (via rubber), or electrically discontinuous.
  • Electrical continuity is ensured through bonding wires or conductive layers to control static electricity, critical to prevent sparks during gas handling.
• Testing and Performance
  • Comprehensive test requirements are established for tensile strength, elongation, aging, abrasion resistance, adhesion, ozone resistance, flammability, vacuum resistance, flexibility at specified temperatures, and burst pressure.
  • Specifies routine and production acceptance testing frequencies to maintain ongoing product quality.
• Marking and Traceability
  • Mandates clear, durable marking on every hose length, indicating manufacturer, standard number, type, size, pressure rating, electrical grade, and date of manufacture, ensuring full traceability and compliance.

Applications

FprEN 1762 is crucial wherever the safe transfer of LPG or natural gas is required under moderate pressures. Key application areas include:

• Gas transportation and distribution: Safe transfer hoses for loading and unloading LPG tankers, railcars, or storage facilities.
• Industrial and commercial settings: Use in refuelling stations, bottling plants, or bulk gas supply networks.
• Temperature-critical operations: -LT specified hoses allow operation in extreme environments down to −50 °C, suitable for cold climates and refrigerated gas handling.
• Routine supply and emergency response: Ensures reliable operation during both planned and emergency gas transfers in petrochemical plants and utilities.

Owing to its broad scope, compliance with FprEN 1762 helps minimize risks associated with gas leaks, static electricity hazards, and premature hose failure, contributing to a safer work environment and operational reliability.

Related Standards

For comprehensive compliance and system integration, the following standards are closely associated with FprEN 1762:

• EN ISO 1402: Hydrostatic testing for rubber and plastics hoses and assemblies.
• EN ISO 8031: Determination of electrical resistance and conductivity of hoses.
• EN ISO 7233: Assessment of vacuum resistance.
• EN ISO 7326: Ozone resistance under static conditions.
• EN 1360: Specification for hoses used in measured fuel dispensing systems.
• ISO 37, ISO 188, ISO 1817: Methods for testing tensile properties, heat resistance, and chemical compatibility of rubber.

Referencing these related standards ensures a holistic approach to the design, testing, and deployment of gas handling hose assemblies in accordance with the latest industry requirements and safety regulations.

Keywords: FprEN 1762, rubber hoses, LPG transfer, natural gas hose, hose assemblies, gas hose standard, safety, electrical continuity, low-temperature hose, CEN standard, industrial gas equipment, hose testing, gas handling equipment.

SLOVENSKI STANDARD
01-januar-2026
Gumene cevi in cevni priključki za utekočinjeni naftni plin LPG (tekoča ali plinska
faza) in zemeljski plin do 25 barov (2,5 MPa) - Specifikacija
Rubber hoses and hose assemblies for liquefied petroleum gas, LPG (liquid or gaseous
phase), and natural gas up to 25 bar (2,5 MPa) - Specification
Gummischläuche und -schlauchleitungen für Flüssiggas LPG (flüssig oder gasförmig)
und Erdgas bis 25bar (2,5 MPa) - Spezifikation
Tuyaux et flexibles en caoutchouc pour le gaz de pétrole liquéfié GPL (en phase liquide
ou gazeuse) et le gaz naturel jusqu'à 25 bar (2,5 MPa) - Spécification
Ta slovenski standard je istoveten z: prEN 1762
ICS:
75.200 Oprema za skladiščenje Petroleum products and
nafte, naftnih proizvodov in natural gas handling
zemeljskega plina equipment
83.140.40 Gumene cevi Hoses
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
prEN 1762
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2025
ICS 23.040.70 Will supersede EN 1762:2018
English Version
Rubber hoses and hose assemblies for liquefied petroleum
gas, LPG (liquid or gaseous phase), and natural gas up to
25 bar (2,5 MPa) - Specification
Tuyaux et flexibles en caoutchouc pour le gaz de Gummischläuche und -schlauchleitungen für Flüssiggas
pétrole liquéfié GPL (en phase liquide ou gazeuse) et le LPG (flüssig oder gasförmig) und Erdgas bis 25 bar (2,5
gaz naturel jusqu'à 25 bar (2,5 MPa) -Spécification MPa) - Spezifikation
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 218.
If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 1762:2025 E
worldwide for CEN national Members.

prEN 1762:2025(E)
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 5
4 Classification. 5
5 Materials and construction . 6
5.1 Hose . 6
5.2 Hose assemblies . 6
6 Dimensions. 6
6.1 Nominal bore, internal diameters, outside diameters, tolerances, and minimum bend
radius . 6
6.2 Minimum thickness of lining and cover . 8
6.3 Concentricity . 8
6.4 Tolerances on length . 9
7 Physical properties . 9
7.1 Rubber compounds . 9
7.2 Finished hose and hose assemblies . 10
8 Electrical properties . 12
8.1 General. 12
8.2 Textile reinforced hoses with bonding wires . 12
8.3 Textile reinforced hoses with conducting materials . 12
8.4 Wire helix reinforced hoses . 12
8.4.1 Grade M-hoses (see 8.2) . 12
8.4.2 Grade Ω-hoses (see 8.3) . 12
8.5 Hose assemblies that are required to be discontinuous . 12
9 Type testing . 13
10 Frequency of testing . 13
11 Marking . 13
11.1 Hoses . 13
11.2 Hose assemblies . 13
Annex A (normative) Test method for flammability . 14
Annex B (normative) Test frequency for type tests and routine tests . 16
Annex C (informative) Test frequency for production acceptance tests . 18
Annex D (informative) Environmental checklist . 20
Bibliography . 22

prEN 1762:2025 (E)
European foreword
This document (prEN 1762:2025) has been prepared by Technical Committee CEN/TC 218
“Rubber and plastics hoses and hose assemblies”, the secretariat of which is held by BSI.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 1762:2018.
prEN 1762:2025 includes the following significant technical changes with respect to
EN 1762:2018:
a) extension of the material of the lining material
b) additional dimensions added in Table 1 and Table 2
c) revision of routine tests
d) in Clause 11, the requirement to include the year of publication of this document in the
marking has been deleted
e) water has been added as a test fluid in Annex A
f) the document has been editorially revised.
prEN 1762:2025(E)
1 Scope
This document specifies the requirements for rubber hoses and rubber hose assemblies used for
the transfer of liquefied petroleum gas (LPG) in liquid or gaseous phase and natural gas with a
maximum working pressure of 25 bar (2,5 MPa) and vacuum within the temperature range of
−30 °C to +70 °C and, when designated -LT, −50 °C to +70 °C.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies.
For undated references, the latest edition of the referenced document (including any
amendments) applies.
EN ISO 1402, Rubber and plastics hoses and hose assemblies — Hydrostatic testing
EN ISO 4671, Rubber and plastics hoses and hose assemblies — Methods of measurement of the
dimensions of hoses and the lengths of hose assemblies
EN ISO 6179, Rubber, vulcanized or thermoplastic — Rubber sheets and rubber-coated fabrics —
Determination of transmission rate of volatile liquids (gravimetric technique)
EN ISO 7233, Rubber and plastics hoses and hose assemblies — Determination of resistance to
vacuum
EN ISO 7326, Rubber and plastics hoses — Assessment of ozone resistance under static conditions
EN ISO 8031, Rubber and plastics hoses and hose assemblies — Determination of electrical
resistance and conductivity
EN ISO 8033, Rubber and plastics hoses — Determination of adhesion between components
EN ISO 8330, Rubber and plastics hoses and hose assemblies — Vocabulary
EN ISO 10619-1, Rubber and plastics hoses and tubing — Measurement of flexibility and stiffness —
Part 1: Bending tests at ambient temperature
EN ISO 10619-2, Rubber and plastics hoses and tubing — Measurement of flexibility and stiffness —
Part 2: Bending tests at sub-ambient temperatures
ISO 37, Rubber, vulcanized or thermoplastic — Determination of tensile stress-strain properties
ISO 188, Rubber, vulcanized or thermoplastic — Accelerated ageing and heat resistance tests
ISO 1817, Rubber, vulcanized or thermoplastic — Determination of the effect of liquids
ISO 4649, Rubber, vulcanized or thermoplastic — Determination of abrasion resistance using a
rotating cylindrical drum device
prEN 1762:2025 (E)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 8330 and the
following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1
electrically bonded hose/hose assembly
hose/hose assembly that uses a metallic wire connection to conduct static electricity
3.2
electrically conductive hose/hose assembly
hose/hose assembly that is capable of conducting static electrical charges, using a conductive
rubber layer, without the use of a metallic wire
3.3
electrically discontinuous hose/hose assembly
hose/hose assembly that incorporates a metallic wire connection to one end fittings of the
assembly only or is electrically insulated from both end-fittings
4 Classification
Hoses/hose assemblies for this application are classified into 5 types and 3 grades according to
their use, construction, and electrical properties. The maximum working pressure for all
hoses/hose assemblies is 25 bar.
The 5 types are as follows:
Type Application
D delivery hose
D-LT delivery hose, low temperature;
SD suction and delivery hose, helix reinforced
SD-LTS suction and delivery hose “smooth hose”, helix reinforced, low temperature
SD-LTR suction and delivery hose, rough bore (having an internal, non-embedded helical
wire of stainless steel), low temperature
Hoses for this application are divided into 3 grades according to their electrical properties:
Grade Electrical property
designation
M Electrically bonded
Ω Electrically conductive using a conductive rubber layer
Discontinuous Electrically discontinuous
prEN 1762:2025(E)
5 Materials and construction
5.1 Hose
The hose shall consist of the following:
— a lining resistant to n-pentane;
— a reinforcement of layers of woven, braided or spirally wound textile material or braided or
spirally wound stainless steel wire,
— an embedded stainless steel metallic helix reinforcement (types SD, SD-LTS and SD-LTR only);
— two or more low resistance electrical bonding wires (grade “M” only);
— an outer cover of black or coloured synthetic rubber, resistant to abrasion and outdoor
exposure; the cover may be pricked to allow gas permeation. If the cover is not pricked a
comparative measurement of permeation between the rubber materials of cover and lining
shall be carried out, see Table 3, item 6;
— an internal, non-embedded stainless steel helical wire, suitable for use at –50 °C (type SD-LTR
only).
5.2 Hose assemblies
Hose assemblies shall incorporate metallic fittings attached to the hose by the assembler or built
in by the manufacturer. In order to produce the required electrical properties, the fittings should
be attached in accordance with Clause 8.
Chlorinated materials shall not be used in contact with any stainless steel materials.
6 Dimensions
6.1 Nominal bore, internal diameters, outside diameters, tolerances, and minimum
bend radius
For hoses without built-in couplings, and when measured in accordance with method A of
EN ISO 4671, the internal diameter and outside diameter and their tolerances shall conform to
Table 1 or Table 2, depending on the type.
For hoses with built-in couplings, the outside diameters in Tables 1 and 2 do not apply.
When tested by the method described in EN ISO 10619-1, the value of the minimum bend radius
shall be as given in Table 1 or Table 2, depending on the type.
prEN 1762:2025 (E)
Table 1 — Dimensions and tolerances of hoses of types D and D-LT
Nominal bore Internal Tolerance Outside Tolerance Design min.
a
diameter diameter bend radius

mm mm mm mm mm
10 10 ±0,5 20,0 ±1,0 90
13 12,7 ±0,5 22,7 ±1,0 100
15 15 ±0,5 25 ±1,0 120
16 15,9 ±0,5 25,9 ±1,0 125
19 19 ±0,5 31 ±1,0 160
25 25 ±0,5 38 ±1,0 200
32 32 ±0,5 45 ±1,0 250
38 38 ±0,5 52 ±1,0 320
50 50 ±0,6 66 ±1,2 400
51 51 ±0,6 67 ±1,2 400
63 63 ±0,6 81 ±1,2 550
75 75 ±0,6 93 ±1,2 650
76 76 ±0,6 94 ±1,2 650
80 80 ±0,6 98 ±1,2 725
100 100 ±1,6 120 ±1,6 800
150 150 ±2,0 174 ±2,0 1200
b
200 200 ±2,0 226 or 232 ±3,0 1600
250 254 ±2,0 — — 2000
300 305 ±2,0 — — 2500
a
The design minimum bend radius is measured to the surface of the hose on the inside of the bend.
b
alternating outer diameter depending on the hose construction.
NOTE Other dimension and measurements possible in accordance with the customer.
prEN 1762:2025(E)
Table 2 — Dimensions and tolerances of hoses of types SD, SD-LTS and SD-LTR
Nominal bore Internal Tolerance Outside Tolerance Design min.
a
diameter diameter bend radius
mm mm
mm
mm mm
10 10 ±0,5 20,0 ±1,0 85
13 12,7 ±0,5 22,7 ±1,0 90
15 15 ±0,5 25 ±1,0 95
16 15,9 ±0,5 25,9 ±1,0 95
19 19 ±0,5 31 ±1,0 100
25 25 ±0,5 38 ±1,0 150
32 32
...