SIST EN ISO 17292:2016

SLOVENSKI STANDARD
01-februar-2016
1DGRPHãþD
SIST EN ISO 17292:2004
Kovinski krogelni ventili za naftno industrijo, petrokemijo in podobno industrijo
(ISO 17292:2015)
Metal ball valves for petroleum, petrochemical and allied industries (ISO 17292:2015)
Kugelhähne aus Metall für Erdöl-, petrochemische und verwandte Industrien (ISO
17292:2015)
Robinets à tournant sphérique métalliques pour les industries du pétrole, de la
pétrochimie et les industries connexes (ISO 17292:2015)
Ta slovenski standard je istoveten z: EN ISO 17292:2015
ICS:
23.060.20 Zapirni ventili (kroglasti in Ball and plug valves
pipe)
75.180.01 Oprema za industrijo nafte in Equipment for petroleum and
zemeljskega plina na splošno natural gas industries in
general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 17292
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2015
EUROPÄISCHE NORM
ICS 23.060.20; 75.200 Supersedes EN ISO 17292:2004
English Version
Metal ball valves for petroleum, petrochemical and allied
industries (ISO 17292:2015)
Robinets à tournant sphérique métalliques pour les Kugelhähne aus Metall für Erdöl-, petrochemische und
industries du pétrole, de la pétrochimie et les verwandte Industrien (ISO 17292:2015)
industries connexes (ISO 17292:2015)
This European Standard was approved by CEN on 7 November 2015.

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
© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 17292:2015 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 17292:2015) has been prepared by Technical Committee ISO/TC 153 "Valves"
in collaboration with the Technical Committee CEN/TC 69 “Industrial valves” the secretariat of which is
held by AFNOR.
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 June 2016, and conflicting national standards shall be
withdrawn at the latest by June 2016.
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 17292:2004.
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 17292:2015 has been approved by CEN as EN ISO 17292:2015 without any modification.
INTERNATIONAL ISO
STANDARD 17292
Second edition
2015-11-15
Metal ball valves for petroleum,
petrochemical and allied industries
Robinets à tournant sphérique métalliques pour les industries du
pétrole, de la pétrochimie et les industries connexes
Reference number
ISO 17292:2015(E)
©
ISO 2015
ISO 17292:2015(E)
© ISO 2015, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2015 – All rights reserved

ISO 17292:2015(E)
Contents Page
Foreword .v
Introduction .vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 3
4 Pressure/temperature ratings . 4
4.1 Valve rating . 4
4.2 Shell rating . 4
4.3 Seat and seal rating . 4
5 Design . 5
5.1 Flow passageway . 5
5.2 Body . 5
5.2.1 Body wall thickness . 5
5.2.2 Flanged ends . . 7
5.2.3 Butt-welding ends. 7
5.2.4 Socket welding ends . 8
5.2.5 Threaded ends .10
5.2.6 Body openings .10
5.2.7 Anti-static design .11
5.2.8 Anti-blow-out stem .11
5.2.9 Ball-stem construction .11
5.2.10 Ball construction .11
5.2.11 Operating means .11
5.2.12 Glands .12
5.2.13 End flange facing interruptions .12
5.2.14 Shell joints .13
5.2.15 Packing gland bolting .14
5.2.16 Fluid thermal expansion .14
6 Materials .15
6.1 Shell .15
6.2 Shell material repair .15
6.3 Trim .15
6.4 Identification plate .15
6.5 Bolting .15
6.6 Seals .15
6.7 Threaded plugs .15
6.8 Low temperature service .15
6.9 Hydrogen sulfide environment .15
7 Marking .16
7.1 Legibility .16
7.2 Body marking .16
7.3 Ring joint marking .16
7.4 Identification plate .16
7.5 Special marking for unidirectional valves .17
8 Testing and inspection .17
8.1 Pressure tests .17
8.1.1 General.17
8.1.2 Shell test .17
8.1.3 Closure tightness test . .18
8.2 Inspection .19
8.2.1 Extent of inspection.19
ISO 17292:2015(E)
8.2.2 Site inspection .19
8.3 Examination.19
8.4 Supplementary examination .19
9 Preparation for despatch .20
Annex A (informative) Information to be specified by the purchaser .21
Annex B (informative) Identification of valve parts .23
Bibliography .25
iv © ISO 2015 – All rights reserved

ISO 17292:2015(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.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical
Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 153, Valves, Subcommittee SC 1, Design,
manufacture, marking and testing.
This second edition cancels and replaces the first edition (ISO 17292:2004), which has been technically
revised with the following changes:
— scope increased to include DN 600, NPS 24, PN 63, and PN 100;
— Clause 2 “Normative references” was updated;
— Class 800 no longer restricted to reduce bore only;
— inclusion of reference and purchaser option to request valves conforming to ISO 15156 or NACE MR0103;
— expanded seat materials to include modified PTFE and reinforced modified PTFE;
— in Table 1, inclusion of higher pressure temperature ratings that are more closely aligned with
BS 5351 and account for improved performance attained from modified PTFE; separate listing for
trunnion valves has been removed from Table 1;
— revised selected bore diameters in Table 2;
— purchaser needs to specify long or short pattern face-to-face dimension on ASME flanged valves;
— clarification that the strength of the stem above the packing shall be stronger than the internal
portion at the maximum rated temperature;
— addition of purchaser option for requesting valve locking device;
— reduction of the permissible radial gap on end face flange interruptions to 0,8 mm;
— added provision for purchaser to request manufacturer to provide method for preventing excessive
pressure when fluid is trapped in centre cavity between seats;
ISO 17292:2015(E)
— expanded required information on identification tag to include separate trim and seat/seal
materials. In addition, material for identification plate limited to stainless steel or nickel alloys;
— added requirement that thread sealant used on plugs for tapped auxiliary connections be capable of
the fully pressure-temperature rating of the valve;
— added purchaser option to request export packaging;
— added purchaser option to request manufacturer identify recommended spare parts.
vi © ISO 2015 – All rights reserved

ISO 17292:2015(E)
Introduction
The purpose of this International Standard is the establishment, in ISO format, of basic requirements
and practices for flanged, butt-welding, socket welding, and threaded end steel ball valves having flow
passageways identified as full bore, reduced bore, and double reduced bore seat openings suitable for
petroleum, petrochemical, and allied industries applications.
It is not the purpose of this International Standard to replace ISO 7121 or any other International
Standard that is not identified with petroleum refinery, petrochemical, or natural gas industry
applications.
In this International Standard, flanged end Class-designated valves have flanges in accordance with
ASME B16.5. Flanged end PN-designated valves have flanges in accordance with EN 1092-1. Valves with
ends threaded may have threads to either ISO 7-1 or ASME B1.20.1.
INTERNATIONAL STANDARD ISO 17292:2015(E)
Metal ball valves for petroleum, petrochemical and allied
industries
1 Scope
This International Standard specifies the requirements for a series of metal ball valves suitable for
petroleum, petrochemical, natural gas plants, and related industrial applications.
It covers valves of the nominal sizes DN:
— 8, 10, 15, 20, 25, 32, 40, 50, 65, 80, 100, 150, 200, 250, 300, 350, 400, 450, 500, 600;
corresponding to nominal pipe sizes NPS:
— ¼, ⅜, ½, ¾, 1, 1 ¼, 1 ½, 2, 2 ½, 3, 4, 6, 8, 10, 12, 14, 16, 18, 20, 24;
and applies for pressure designations:
— Class 150; 300; 600; 800 (Class 800 applies only for valves with threaded and socket welding end);
— PN 16, 25, 40, 63, 100.
It includes provisions for testing and inspection and for valve characteristics as follows:
— flanged and butt-welded ends, in sizes 15 ≤ DN ≤ 600 (½ ≤ NPS ≤ 24);
— socket welding and threaded ends, in sizes 8 ≤ DN ≤ 50 (¼ ≤ NPS ≤ 2);
— body seat openings designated as full bore, reduced bore, and double reduced bore;
— materials.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 7-1, Pipe threads where pressure-tight joints are made on the threads — Part 1: Dimensions, tolerances
and designation
ISO 7-2, Pipe threads where pressure-tight joints are made on the threads — Part 2: Verification by means
of limit gauges
ISO 261, ISO general purpose metric screw threads — General plan
ISO 965-2, ISO general purpose metric screw threads — Tolerances — Part 2: Limits of sizes for general
purpose external and internal screw threads — Medium quality
ISO 4032, Hexagon regular nuts (style 1) — Product grades A and B
ISO 4033, Hexagon high nuts (style 2) — Product grades A and B
ISO 4034, Hexagon regular nuts (style 1) — Product grade C
ISO 5208, Industrial valves — Pressure testing of metallic valves
ISO 5209, General purpose industrial valves — Marking
ISO 17292:2015(E)
ISO 5752, Metal valves for use in flanged pipe systems — Face-to-face and centre-to-face dimensions
ISO 9606-1, Qualification testing of welders — Fusion welding — Part 1: Steels
ISO 15156-1, Petroleum and natural gas industries — Materials for use in H2S-containing environments in
oil and gas production — Part 1: General principles for selection of cracking-resistant materials
ISO 15156-2, Petroleum and natural gas industries — Materials for use in H2S-containing environments in
oil and gas production — Part 2: Cracking-resistant carbon and low-alloy steels, and the use of cast irons
ISO 15156-3, Petroleum and natural gas industries — Materials for use in H2S-containing environments in
oil and gas production — Part 3: Cracking-resistant CRAs (corrosion resistant alloys) and other alloys
ISO 15607, Specification and qualification of welding procedures for metallic materials — General rules
ISO 15609-1, Specification and qualification of welding procedures for metallic materials — Welding
procedure specification — Part 1: Arc welding
ISO 15610, Specification and qualification of welding procedures for metallic materials — Qualification
based on tested welding consumables
ISO 15614-1, Specification and qualification of welding procedures for metallic materials — Welding
procedure test — Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys
ISO 15614-2, Specification and qualification of welding procedures for metallic materials — Welding
procedure test — Part 2: Arc welding of aluminium and its alloys
EN 1092-1, Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, PN
designated — Part 1: Steel flanges
EN 10269, Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties
EN 12516-1, Industrial valves — Shell design strength — Part 1: Tabulation method for steel valve shells
EN 12982, Industrial valves — End-to-end and centre-to-end dimensions for butt welding end valves
ASME B1.1, Unified Inch Screw Threads (UN and UNR Thread Form)
ASME B1.20.1, Pipe Threads, General Purpose, Inch
ASME B16.5, Pipe Flanges and Flanged Fittings: NPS 1/2 through NPS 24 Metric/Inch Standard
ASME B16.10, Face-to Face and End-to-End Dimensions of Valves
ASME B16.34:2013, Valves Flanged, Threaded and Welding End
ASME B18.2.2, Nuts for General Applications: Machine Screw Nuts, Hex, Square, Hex Flange, and Coupling
Nuts (Inch Series)
ASME BPVC-IX, Boiler and Pressure Vessel Code — Section IX — Welding, Brazing, and fusing Qualifications
ASTM A307, Standard Specification for Carbon Steel Bolts, Studs, and Threaded Rod 60 000 PSI Tensile
Strength
MSS-SP-55, Quality Standard for Steel Castings for Valves, Flanges and Fittings, and Other Piping
Components — Visual Method for Evaluation of Surface Irregularities
NACE MR0103, Materials Resistant to Sulfide Stress Cracking in Corrosive Petroleum Refining Environments

2 © ISO 2015 – All rights reserved

ISO 17292:2015(E)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
DN
alphanumeric designation of size common for components used in a piping system, used for reference
purposes, comprising the letters DN followed by a dimensionless number indirectly related to the
physical size of the bore or outside diameter of the end connection as appropriate
Note 1 to entry: The dimensionless number following DN does not represent a measurable value and is not used
for calculation purposes except where specified in this International Standard. Prefix DN usage is applicable to
steel valves bearing PN designations.
3.2
nominal pipe size
NPS
alphanumeric designation of size common for components used in a piping system, used for reference
purposes, comprising the letters NPS followed by a dimensionless number indirectly related to the
physical size of the bore or outside diameter of the end connection as appropriate
Note 1 to entry: The dimensionless number may be used as a valve size identifier without the prefix NPS. The
dimensionless size identification number does not represent a measurable value and is not used for calculation
purposes except where specified in this International Standard. Prefix NPS usage is applicable to steel valves
bearing Class designations.
3.3
PN
dimensionless alphanumeric designation used to define a maximum pressure/temperature
rating applicable to the valve pressure containing shell comprising the letters PN followed by a
dimensionless whole number
Note 1 to entry: The number following the letters PN does not represent a measurable value and is not used for
calculation purposes except where specified in this International Standard.
3.4
Class
dimensionless alphanumeric designation used in ASME standards to define a maximum
pressure/temperature rating applicable to the valve pressure containing shell comprising the letters
Class followed by a dimensionless whole number
Note 1 to entry: The number following the letters Class does not represent a measurable value and is not used for
calculation purposes except where specified in this International Standard.
3.5
anti-static design
design that provides for electrical continuity between the body, ball, and stem of the valve
3.6
polytetrafluoroethylene
PTFE
synthetic fluoropolymer of tetrafluoroethylene which is a high-molecular-weight thermoplastic
consisting wholly of carbon and fluorine
3.7
reinforced PTFE
PTFE (3.6) compounded with filler or reinforcing materials such as glass fibre, carbon, metal powders,
and graphite uniformly dispersed within to achieve greater strength, increase creep resistance, lower
wear rate, and higher pressure-temperature rating
ISO 17292:2015(E)
3.8
modified PTFE
PTFE (3.6) compounded with a small percentage of perfluoropropyl vinyl ether (PPVE) to reduce
melt viscosity during processing enabling better fusion of the PTFE particles during sintering thereby
increasing creep resistance
3.9
reinforce modified PTFE
modified PTFE (3.8) compounded with filler or reinforcing materials such as glass fibre, carbon,
metal powders, and graphite uniformly dispersed within to achieve greater strength, increase creep
resistance, lower wear rate, and higher pressure-temperature rating
4 Pressure/temperature ratings
4.1 Valve rating
The service pressure/temperature rating applicable to valves specified in this International Standard
shall be the lesser of the shell rating (see 4.2) or the seat rating (see 4.3).
4.2 Shell rating
4.2.1 The pressure/temperature ratings applicable to the valve pressure containing shell (the pressure
boundary elements, e.g. body, body cap, trunnion cap, cover, body inserts) shall be in accordance with
those specified in the pressure/temperature tables of either ASME B16.34, Standard Class for Class-
designated valves, or EN 12516-1 for PN-designated valves.
4.2.2 The temperature for a corresponding shell pressure rating is the maximum temperature that is
permitted for the pressure containing shell of the valve. In general, this maximum temperature is that of
the contained fluid. The use of a pressure rating corresponding to a temperature other than that of the
contained fluid is the responsibility of the user. For temperatures below the lowest temperature listed in
the pressure/temperature tables (see 4.2.1), the service pressure shall be no greater than the pressure
for the lowest listed temperature. Consideration should be given to the loss of ductility and impact
strength of many materials at low temperature.
4.3 Seat and seal rating
4.3.1 Non-metallic elements, e.g. seats, seals, or stem seals, may impose restrictions on the applied
pressure/temperature rating. Any such restriction shall be shown on the valve identification plate in
accordance with 7.4.
4.3.2 The design shall be such that when polytetrafluoroethylene (PTFE), modified PTFE, reinforced
PTFE, or modified reinforced PTFE is used for seats, the minimum seat pressure/temperature rating
shall as specified in Table 1.
4.3.3 Seat ratings for other seat materials shall be the manufacturer’s standard. Seats made from
hard materials such as solid cobalt-chromium alloy, ceramics, or metal seats coated with hard materials
such as carbide coatings are also acceptable and shall have seat pressure-temperature ratings per the
manufacturer’s standard. The seat pressure/temperature rating shall not exceed that of the valve shell.
4 © ISO 2015 – All rights reserved

ISO 17292:2015(E)
Table 1 — Minimum seat pressure/temperature rating
Reinforced PTFE and reinforced modified
PTFE and modified PTFE seats
PTFE seats
a
Temperature
°C DN ≤ 50 50 < DN ≤ 100 DN > 100 DN ≤ 50 50 < DN ≤ 100 DN > 100
NPS ≤ 2 2 < NPS ≤ 4 NPS > 4 NPS ≤ 2 2 < NPS ≤ 4 NPS > 4
−29 to 38 69,0 51,0 21,0 75,9 51,0 26,7
50 66,0 49,0 21,0 73,0 50,0 26,1
75 56,7 42,2 18,4 63,3 43,7 22,7
100 47,4 35,4 15,8 53,7 37,3 19,1
125 38,1 28,6 13,2 44,0 31,0 15,7
150 28,8 21,8 10,6 34,3 24,7 12,2
175 19,5 15,0 8,0 24,7 18,3 8,7
200 — — — 15,0 12,0 5,3
For a given PN or Class designation, the assigned valve pressure/temperature ratings shall not exceed the shell ratings (see
4.2).
5 2
Pressure in bar (1 bar = 0,1 MPa = 10 Pa; 1 MPa = 1 N/mm ).
a
Consult the manufacturer for maximum design temperature rating of the valve seats.
5 Design
5.1 Flow passageway
The flow passageway includes the circular seat opening in the ball and the body runs leading thereto.
The body runs are the intervening elements that link the seat opening to the end connection, e.g. to the
thread end, weld end, or socket end or to the end-flange. Collectively, the flow passageway through the
ball and body runs is referred to as the flow passageway. The bore is categorized in this International
Standard as full bore, reduced bore, and double reduced bore. The minimum bore for each category
shall be such that a hypothetical cylinder having a diameter in accordance with Table 2 can be passed
through when the handle or gear operator is moved to the full open position stop.
5.2 Body
5.2.1 Body wall thickness
5.2.1.1 The minimum valve body wall thickness, t , shall be as specified in Table 3 except that for butt-
m
welding end valves, the welding ends for connection to pipe shall be in accordance with Figure 1.
5.2.1.2 The minimum thickness requirements are applicable to and are measured from internally
wetted surfaces, i.e. up to the point where body seals are effective.
ISO 17292:2015(E)
Table 2 — Cylinder diameter for categorizing bore size
Minimum bore diameter
mm
Full bore Reduced bore Double reduced bore
DN NPS
PN: All PN: All PN: All
Class: All Class: All Class: All
8 5 N/A N/A ¼
10 8 5 N/A ⅜
15 11 8 N/A ½
20 17 12 8 ¾
25 24 17 14 1
32 30 22 18 1 ¼
40 37 27 23 1 ½
50 49 37 30 2
65 62 49 37 2 ½
80 75 56 49 3
100 100 75 62 4
150 148 100 75 6
200 198 151 100 8
a
250 245 202 151 10
b
300 295 251 202 12
350 334 302 251 14
400 385 334 302 16
450 436 385 334 18
500 487 436 385 20
600 586 487 436 24
NOTE   N/A signifies that valves having this configuration are not within the scope of this International Standard.
a
For one-piece (unibody) design, the minimum flow passage is 186 mm.
b
For one-piece (unibody) design, the minimum flow passage is 227 mm.
5.2.1.3 Local areas having less than minimum wall thickness are acceptable provided that all of the
following conditions are satisfied:
— the area of sub-minimum thickness can be enclosed by a circle, the diameter of which is not greater
than 0,35 dt , where d is the minimum bore diameter given in Table 2 and t is the minimum
m
m
wall thickness given in Table 3;
— the measured thickness is not less than 0,75 t ;
m
— enclosed circles are separated from each other by an edge-to-edge distance of not less than
1,75 dt .
m
5.2.1.4 The manufacturer, taking into account such factors as component bolting or thread assembly
loads, rigidity needed for component alignment, other valve design details, and the specified operating
conditions, is responsible for determining if larger wall thickness is required.
6 © ISO 2015 – All rights reserved

ISO 17292:2015(E)
5.2.2 Flanged ends
5.2.2.1 Body end flanges shall comply with the requirements of ASME B16.5 for Class-designated valves
and EN 1092-1 for PN-designated valves. Raised face end flanges shall be provided unless otherwise
specified by the purchaser.
5.2.2.2 Face-to-face dimensions for flanged end valves shall be in accordance with ASME B16.10 long
or short pattern for Class-designated valves or ISO 5752 basic series 1, 14, and 27 for PN-designated
valves with an appropriate tolerance as follows:
— for DN ≤250, a tolerance of ±2 mm;
— for DN ≥300, a tolerance of ±4 mm.
5.2.2.3 Body or body cap end flanges shall be either cast or forged integral with the body or cap or
cast or forged flanges attached by full penetration butt-welding. A purchaser requiring integral flange
construction shall so specify.
When a flange is attached by welding, it is required that the welding operator and welding procedure
shall be qualified in accordance with the rules of ASME-BPVC-IX or the rules of ISO 9606-1, ISO 15607,
ISO 15609-1, ISO 15614-1, ISO 15614-2, and ISO 15610.
Alignment rings, either integral or loose used as a welding aid, shall be completely removed following
welding with care being taken that the minimum wall thickness is maintained. Heat treatment,
following welding, to ensure that the valve body and flange materials are suitable for the full range of
service conditions shall be performed as required by the material specification.
5.2.2.4 End flange facing finish shall be in accordance with ASME B16.5 for Class-designated valves or
EN 1092-1 for PN-designated valves unless otherwise specified by the purchaser.
5.2.3 Butt-welding ends
5.2.3.1 Butt-welding ends shall be in accordance with Figure 1 and Table 4 unless otherwise specified
by the purchaser.
5.2.3.2 End-to-end dimensions for Class-designated valves shall be in accordance with ASME B16.10
for either the long or short pattern or in accordance with EN 12982 for PN-designated valves.
ISO 17292:2015(E)
Table 3 — Valve body wall thickness
PN 16 25 and 40 63 100 — PN
Class 150 300 — 600 800 Class
Minimum valve body wall thickness, t ,
m
mm
DN NPS
Double Double Double Double
Full Reduced Full Reduced Full Reduced Full Reduced All
reduced reduced reduced reduced
bore bore bore bore bore bore bore bore bore
bore bore bore bore
8 2,7 2,7 N/A 2,9 2,9 N/A 2,7 2,7 N/A 3,1 3,1 N/A 3,3 ¼
10 2,9 2,9 N/A 3,0 2,9 N/A 2,9 2,9 N/A 3,4 3,3 N/A 3,6 ⅜
15 3,1 3,1 N/A 3,2 3,2 N/A 3,1 3,1 N/A 3,6 3,6 N/A 3,9 ½
20 3,4 3,4 N/A 3,7 3,7 N/A 3,5 3,5 N/A 4,1 4,1 N/A 5,2 ¾
25 3,9 3,8 3,8 4,1 4,1 4,1 4,0 4,0 4,0 4,7 4,6 4,6 6,0 1
32 4,3 4,2 4,2 4,7 4,6 4,6 4,4 4,3 4,3 5,1 5,0 5,0 6,4 1 ¼
40 4,7 4,5 4,5 5,2 5,0 5,0 4,8 4,7 4,7 5,5 5,4 5,4 5,8 1 ½
50 5,5 5,3 5,3 6,2 5,9 5,9 5,6 5,5 5,5 6,3 6,0 6,0 7,0 2
65 5,7 5,6 5,6 6,7 6,5 6,5 6,5 6,3 6,3 6,7 6,4 6,4 N/A 2 ½
80 6 5,9 5,9 7,1 6,9 6,9 7,2 7,0 7,0 7,6 7,2 7,2 N/A 3
100 6,3 6,3 6,3 7,6 7,6 7,6 8,2 7,9 7,9 9,2 8,7 8,7 N/A 4
150 7,1 6,9 6,9 9,3 8,9 8,9 10,1 9,8 9,8 12,6 11,8 11,8 N/A 6
200 7,9 7,7 7,7 10,9 10,4 10,4 12,5 12,0 12,0 15,7 14,7 14,7 N/A 8
250 8,7 8,4 8,4 12,5 12,0 12,0 14,5 13,5 13,5 18,9 17,6 17,6 N/A 10
300 9,5 9,2 9,2 14,2 13,5 13,5 16,5 15,5 15,5 22,3 20,7 20,7 N/A 12
350 10 9,6 9,6 15,2 14,4 14,4 17,8 16,8 16,8 24,1 22,5 22,5 N/A 14
400 10,8 10,4 10,4 16,8 16 16 19,8 18,6 18,6 27,3 25,4 25,4 N/A 16
450 11,7 11,1 11,1 18,7 17,3 17,3 21,7 20,4 20,4 31,1 28,9 28,9 N/A 18
500 12,4 11,9 11,9 20,2 18,8 18,8 24,0 22,5 22,5 33,2 30,8 30,8 N/A 20
600 14,3 13,3 13,3 23,7 21,8 21,8 31,9 25,9 25,9 42,3 38,4 38,4 N/A 24
NOTE   N/A signifies that valves having this configuration are not within the scope of this International Standard.
5.2.4 Socket welding ends
5.2.4.1 The socket bore axis shall coincide with the end entry axis. Socket end faces shall be perpendicular
to the socket bore axis. The socket bore diameter and its depth shall be as specified in Table 5.
5.2.4.2 The minimum socket wall thickness extending over the full socket depth shall be as
specified in Table 6.
5.2.4.3 End-to-end dimensions for socket welding end valves shall be established by the manufacturer.
The inside and outside surfaces of valve welding ends are machine finished overall. The contour within
the envelope is at the option of the manufacturer unless specifically ordered otherwise.
Intersections should be slightly rounded.
8 © ISO 2015 – All rights reserved

≤30˚
≤30˚
ISO 17292:2015(E)
Valves minimum wall thickness equal to 3 mm or less may have ends cut square or slightly chamfered.
1,5 T
1,5 T
a)  Welding end for connection to pipe of b)  Welding end for connection to pipe of
wall thickness T ≤ 22 mm wall thickness T > 22 mm
Key
A nominal outside diameter of welding end
B nominal inside diameter of pipe
T nominal wall thickness of pipe
NOTE 1 For nominal outside diameters and wall thickness of standard steel pipe, see ISO 4200 or ASME B36.10.
NOTE 2 Linear dimensions and tolerances shown are in millimetres.
Figure 1 — Welding ends
Table 4 — Welding ends
DN 15 20 25 32 40 50 65 80 100 150 200 250 300 350 400 450 500 600
NPS ½ ¾ 1 1 ¼ 1 ½ 2 2 ½ 3 4 6 8 10 12 14 16 18 20 24
diameter 22 28 35 44 50 62 78 91 117 172 223 278 329 362 413 464 516 619
A
+25, +40,
mm
tolerance
−10, −10,
+10, +20, +30,
B
tolerance
−10, −20, −20,
mm
≤30˚
≤30˚
10˚ ± 2,5˚
37,5˚ ± 2,5˚
37,5˚ ± 2,5˚
≤45˚
≤45˚
T
B
A
T
B
A
ISO 17292:2015(E)
Table 5 — Socket diameter and depth
a b
Diameter Depth
DN NPS
mm
8 14,1 9,5 ¼
10 17,5 9,5 ⅜
15 21,7 10 ½
20 27,0 13 ¾
25 33,8 13 1
32 42,5 13 1 ¼
40 48,6 13 1 ½
50 61,1 16 2
+05,
a
The applicable diametral tolerance is mm.
b
The depth dimension is a minimum value.
Table 6 — Socket and threaded end wall thickness
PN 16, 25, and 40 63 and 100 — PN
Class 150 and 300 600 800 Class
Minimum wall thickness
DN NPS
mm
8 3,0 3,3 3,3 ¼
10 3,0 3,6 3,6 ⅜
15 3,3 4,1 4,1 ½
20 3,6 4,3 4,3 ¾
25 3,8 5,1 5,1 1
32 3,8 5,3 5,3 1 ¼
40 4,1 5,6 5,8 1 ½
50 4,6 6,1 6,9 2
5.2.5 Threaded ends
5.2.5.1 The threaded end thread axis shall coincide with the end entry axis. The minimum wall
thickness at the threaded end shall be as specified in Table 6. An approximate 45° lead-in chamfer having
an approximate depth of one-half the thread pitch shall be applied at each threaded end.
5.2.5.2 The end threads for PN-designated valves shall be taper pipe threads meeting the requirements
of ISO 7-1 or for Class-designated valves, shall be taper pipe threads meeting the requirements of
ASME B1.20.1. Pipe threads shall be gauged in accordance with ISO 7-2 or ASME B1.20.1 as applicable.
5.2.5.3 End-to-end dimensions for threaded end valves shall be established by the manufactu
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