EN ISO 6808:2000
(Main)Plastics hoses and hose assemblies for suction and low-pressure discharge of petroleum liquids - Specification (ISO 6808:1999)
Plastics hoses and hose assemblies for suction and low-pressure discharge of petroleum liquids - Specification (ISO 6808:1999)
Migrated from Progress Sheet (TC Comment) (2000-07-10): Waiting for work in ISO re. ISO 6808. Second CD to be circulated. ++ ISO document target date estimated for Stage 21 is 1995-03 ++ CEN/TC 218 N182: Will go UAP (TA/970424) but TC resolution ?
Kunststoffschläuche und -schlauchleitungen für das Ansaugen und Fördern von Flüssigkeiten aus Erdöl bei niedrigem Druck - Spezifikation (ISO 6808:1999)
Diese Internationale Norm legt die Anforderungen fest für zwei Typen polymer- verstärkter Thermoplastschläuche und -schlauchleitungen für die Anwendung zum Ansaugen und Fördern von Kerosin, Heizöl, Dieselkraftstoff und Schmieöl in einem Temperaturbereich von -10°C bis +45°C.
Tuyaux et flexibles en plastique pour aspiration et refoulement basse pression des liquides pétroliers - Spécifications (ISO 6808:1999)
La présente Norme internationale spécifie les exigences s'appliquant à deux types de tuyaux et flexibles thermoplastiques renforcés de polymère pour aspiration et refoulement de kérosène, fuel, carburant diesel et huiles lubrifiantes dans une gamme de températures comprise entre - 10 °C et + 45 °C.
NOTE : Les tuyaux peuvent être stockés de manière statique à une température comprise entre - 30 °C et + 65 °C sans être endommagés par les conditions climatiques.
Plastics hoses and hose assemblies for suction and low-pressure discharge of petroleum liquids - Specification (ISO 6808:1999)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2000
Plastics hoses and hose assemblies for suction and low-pressure discharge of
petroleum liquids - Specification (ISO 6808:1999)
Plastics hoses and hose assemblies for suction and low-pressure discharge of petroleum
liquids - Specification (ISO 6808:1999)
Kunststoffschläuche und -schlauchleitungen für das Ansaugen und Fördern von
Flüssigkeiten aus Erdöl bei niedrigem Druck - Spezifikation (ISO 6808:1999)
Tuyaux et flexibles en plastique pour aspiration et refoulement basse pression des
liquides pétroliers - Spécifications (ISO 6808:1999)
Ta slovenski standard je istoveten z: EN ISO 6808:2000
ICS:
75.200 2SUHPD]DVNODGLãþHQMH Petroleum products and
QDIWHQDIWQLKSURL]YRGRYLQ natural gas handling
]HPHOMVNHJDSOLQD equipment
83.140.40 Gumene cevi Hoses
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
INTERNATIONAL ISO
STANDARD 6808
Second edition
1999-02-01
Plastics hoses and hose assemblies
for suction and low-pressure discharge
of petroleum liquids — Specification
Tuyaux et flexibles en plastique pour aspiration et refoulement basse
pression des liquides pétroliers — Spécifications
A Reference number
ISO 6808:1999(E)
ISO 6808:1999(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO
member bodies). The work of preparing International Standards is normally carried out through ISO technical
committees. Each member body interested in a subject for which a technical committee has been established has
the right to be represented on that committee. International organizations, governmental and non-governmental, in
liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical
Commission (IEC) on all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are circulated to the member bodies for voting.
Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.
International Standard ISO 6808 was prepared by Technical Committee ISO/TC 45, Rubber and rubber products,
Subcommittee SC 1, Hoses (rubber and plastics).
This second edition cancels and replaces the first edition (ISO 6808:1984), which has been technically revised.
© ISO 1999
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic
or mechanical, including photocopying and microfilm, without permission in writing from the publisher.
International Organization for Standardization
Case postale 56 • CH-1211 Genève 20 • Switzerland
Internet iso@iso.ch
Printed in Switzerland
ii
©
ISO ISO 6808:1999(E)
Introduction
This International Standard has been prepared to provide minimum acceptable requirements for the satisfactory
performance of polymer-reinforced thermoplastics hoses for suction and discharge applications, conveying
kerosene, heating oil, diesel fuel and lubricating oils. These hoses are not suitable for conveying automotive or
aviation fuel, nor for metered delivery of any liquid.
The list of nominal bores given in Tables 1 and 2 is not intended to be restrictive and will not preclude the
manufacture of sizes outside the preferred-number range (the basis of the tables) and which may be the subject of
individual national standards.
iii
©
INTERNATIONAL STANDARD ISO ISO 6808:1999(E)
Plastics hoses and hose assemblies for suction and low-pressure
discharge of petroleum liquids — Specification
WARNING — Persons using this International Standard should be familiar with normal laboratory practice.
This standard does not purport to address all of the safety problems, if any, associated with its use. It is
the responsibility of the user to establish appropriate safety and health practices and to ensure compliance
with any national regulatory conditions.
1 Scope
This International Standard specifies the requirements for two types of polymer-reinforced thermoplastics hose and
hose assembly for suction and discharge applications with kerosene, heating oil, diesel fuel and lubricating oils in
the temperature range – 10 °C to + 45 °C.
NOTE The hoses can be stored in a static condition at – 30 °C to + 65 °C without damage by climatic conditions.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of
this International Standard. For dated references, subsequent amendments to, or revisions of, any of these
publications do not apply. However, parties to agreements based on this International Standard are encouraged to
investigate the possibility of applying the most recent editions of the normative documents indicated below. For
undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC
maintain registers of currently valid International Standards.
ISO 3:1973, Preferred numbers — Series of preferred numbers.
ISO 176:1976, Plastics — Determination of loss of plasticizers — Activated carbon method.
ISO 188:1998, Rubber, vulcanized or thermoplastic — Accelerated ageing and heat resistance tests.
ISO 471:1995, Rubber — Temperatures, humidities and times for conditioning and testing.
ISO 527-3:1995, Plastics — Determination of tensile properties — Part 3: Test conditions for films and sheets.
ISO 868:1985, Plastics and ebonite — Determination of indentation hardness by means of a durometer (Shore
hardness).
ISO 1307:1992, Rubber and plastics hoses for general-purpose industrial applications — Bore diameters and
tolerances, and tolerances on length.
©
ISO
ISO 6808:1999(E)
ISO 1402:1994, Rubber and plastics hoses and hose assemblies — Hydrostatic testing.
ISO 1746:1998, Rubber or plastics hoses and tubing — Bending tests.
ISO 1817:1999, Rubber, vulcanized — Determination of the effect of liquids.
ISO 4672:1997, Rubber and plastics hoses — Sub-ambient temperature flexibility tests.
ISO 7233:1991, Rubber and plastics hoses and hose assemblies — Determination of suction resistance.
ISO 7751:1991, Rubber and plastics hoses and hose assemblies — Ratios of proof and burst pressure to design
working pressure.
ISO 8031:1993, Rubber and plastic hoses and hose assemblies — Determination of electrical resistance.
3 Classification
Two types of hose are specified, differentiated by the working pressure as follows:
1)
Type 1: for light service, having a maximum working pressure of 3 bar at 23 °C ± 2 °C and 2,3 bar at
45 °C ± 2 °C;
Type 2: for normal service, having a maximum working pressure of 5,5 bar or 4 bar at 23 °C ± 2 °C and 4 bar or
3 bar at 45 °C ± 2 °C, depending on the nominal bore.
4 Construction and materials
The hoses shall be as uniform as commercially practicable in colour, opacity and other physical properties. Flexible
thermoplastics materials shall be supported inside the material by a helix of polymeric material of a similar
molecular structure. The reinforcing and flexible components of the wall shall be fused and free from visible cracks,
porosity, foreign inclusions or other defects causing the hose to be unserviceable. Hose assemblies shall be
electrically bonded between couplings. Electrical continuity may be ensured by an antistatic strip welded along the
hose on its outer surface. The antistatic strip may consist of a braided copper wire coated with suitable plastics
material and shall be anchored to the metal couplings in a manner that will ensure reliable electrical continuity
throughout the life of the hose.
The method of ensuring initial electrical continuity shall be the responsibility of the manufacturer and shall be carried
out to the satisfaction of the user.
5 Dimensions and tolerances
5.1 Diameter
The nominal bore of the hose and the internal diameter and tolerances shall be in accordance with the values given
in Tables 1 and 2, which are in accordance with ISO 1307.
1)
1 bar = 0,1 MPa
©
ISO
ISO 6808:1999(E)
Table 1 — Diameters and tolerances (Type 1 hoses)
Nominal bore Internal diameter Tolerance
mm mm
12,5 12,5
± 0,75
16 16 ± 0,75
19 19 ± 0,75
20 20
± 0,75
25 25 ± 1,25
31,5 31,5 ± 1,25
38 38
± 1,25
40 40 1,50
±
50 50 ± 1,50
63 63
± 2,00
80 80
± 2,00
100 100 ± 2,00
125 125 ± 2,00
Table 2 — Diameters and tolerances (Type 2 hoses)
Nominal bore Internal diameter Tolerance
mm mm
12,5 12,5
± 0,75
16 16 0,75
±
19 19 ± 0,75
20 20
± 0,75
25 25
± 1,25
31,5 31,5 ± 1,25
38 38 ± 1,25
40 40
± 1,50
50 50 ± 1,50
NOTE 1 For smaller or larger diameters, it is recommended that values be chosen from the R 10 series of preferred numbers
(see ISO 3), with tolerances as specified in ISO 1307.
NOTE 2 For intermediate diameters, it is recommended that values be chosen from the R 20 series of preferred numbers.
©
ISO
ISO 6808:1999(E)
5.2 Length
The tolerances on cut lengths of hose shall be as given in Table 3.
Table 3 — Tolerances on cut lengths
Nominal bore Tolerance on cut length
%
Up to and including 40
± 1
Over 40 ± 2
6 Physical properties of finished hoses
6.1 Hydrostatic requirements at standard laboratory temperature
When tested at standard laboratory temperature as specified in ISO 471 by the method specified in ISO 1402, the
hose shall meet the requirements given in Table 4.
When examined at proof pressure (i.e. 50 % of minimum bursting pressu
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.