EN ISO 10434:2020

Bolted bonnet steel gate valves for the petroleum, petrochemical and allied industries (ISO 10434:2020)

This document specifies the requirements for a heavy-duty series of bolted bonnet steel gate valves for petroleum refinery and related applications where corrosion, erosion and other service conditions can indicate a need for full port openings, heavy wall sections and large stem diameters.
This document sets forth the requirements for the following gate valve features:
—     bolted bonnet;
—     outside screw and yoke;
—     rising stems;
—     non-rising handwheels;
—     single or double gate;
—     wedge or parallel seating;
—     metallic seating surfaces;
—     flanged or butt-welding ends.
It covers valves of the nominal sizes DN:
—     25; 32; 40; 50; 65; 80; 100; 150; 200; 250; 300; 350; 400; 450; 500; 600;
corresponding to nominal pipe sizes NPS:
—     1; 1¼; 1½; 2; 2½; 3; 4; 6; 8; 10; 12; 14; 16; 18; 20; 24;
applies for pressure Class designations:
—     150; 300; 600; 900; 1 500; 2 500;
and applies for pressure PN designations:
—     16, 25, 40, 63, 100, 160, 250 and 400.

Schieber aus Stahl mit geflanschtem Oberteil für die Erdöl-, petrochemische und verwandte Industrien (ISO 10434:2020)

Dieses Dokument legt die Anforderungen an Stahl-Schieber schwerer Ausführung mit geflanschtem Oberteil für Anwendungen in Erdölraffinerien und für ähnliche Zwecke fest, wo Korrosion, Erosion und andere Betriebsbedingungen vollen Durchgang, große Wandquerschnitte und große Spindeldurchmesser erfordern können.
In diesem Dokument werden Anforderungen für Schieber mit folgenden Merkmalen festgelegt:
- geflanschtes Oberteil;
- außenliegendes Spindelgewinde und Bügelaufsatz;
- steigende Spindeln;
- nichtsteigende Handräder;
- einteiliger oder zweiteiliger Abschlusskörper;
- Keil  oder Parallelsitz;
- metallische Sitzoberflächen;
- Flanschanschluss oder Anschweißende.
Es umfasst Schieber mit folgenden Nennweiten DN:
- 25; 32; 40; 50; 65; 80; 100; 150; 200; 250; 300; 350; 400; 450; 500; 600;
für die entsprechenden Rohr-Nennweiten NPS:
- 1; 1¼; 1½; 2; 2½; 3; 4; 6; 8; 10; 12; 14; 16; 18; 20; 24;
gilt für die entsprechenden Class-Werte:
- 150; 300; 600; 900; 1 500; 2 500;
und gilt für PN Werte:
- 16, 25, 40, 63, 100, 160, 250 und 400.

Robinets-vannes en acier à chapeau boulonné pour les industries du pétrole, de la pétrochimie et les industries connexes (ISO 10434:2020)

Le présent document spécifie les exigences pour une large gamme de robinets-vannes en acier à chapeau boulonné pour les raffineries de pétrole et applications connexes pour lesquelles la corrosion, l'érosion et autres conditions relatives au service peuvent impliquer l'utilisation d'orifices de passage intégral, de parois épaisses et de tiges de grands diamètres.
Le présent document donne les exigences pour les éléments des robinets-vannes suivants:
—          chapeau boulonné;
—          tige à filetage extérieur et arcade;
—          tiges montantes;
—          volants non montants;
—          obturateur à simple ou double opercule;
—          sièges obliques ou parallèles;
—          surfaces de portées métalliques;
—          extrémités à brides ou à souder en bout.
Il est applicable aux appareils de robinetterie de diamètres nominaux DN:
—          25; 32; 40; 50; 65; 80; 100; 150; 200; 250; 300; 350; 400; 450; 500; 600;
correspondant aux dimensions nominales de tuyauterie NPS:
—          1; 1¼; 1½; 2; 2½; 3; 4; 6; 8; 10; 12; 14; 16; 18; 20; 24;
pour les désignations de pressions Class:
—          150; 300; 600; 900; 1 500; 2 500;
et pour les désignations de pressions PN:
—          16, 25, 40, 63, 100, 160, 250 et 400.

Jekleni zasuni s prirobničnim zgornjim delom za naftno industrijo, petrokemijo in podobno industrijo (ISO 10434:2020)

General Information

• Status: Published
• Publication Date: 15-Sep-2020
• Withdrawal Date: 30-Mar-2021
• ICS: 75.180.20 - Processing equipment
• Technical Committee: CEN/TC 69 - Industrial valves
• Drafting Committee: CEN/TC 69 - Industrial valves
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 16-Sep-2020
• Completion Date: 16-Sep-2020
• Ref Project: SIST EN ISO 10434:2020 - Bolted bonnet steel gate valves for the petroleum, petrochemical and allied industries (ISO 10434:2020)

Relations

• Replaces: EN ISO 10434:2004 - Bolted bonnet steel gate valves for the petroleum, petrochemical and allied industries (ISO 10434:2004)
• Effective Date: 08-May-2019

Standards Content (Sample)

SLOVENSKI STANDARD
01-november-2020
Nadomešča:
SIST EN ISO 10434:2004
Jekleni zasuni s prirobničnim zgornjim delom za naftno industrijo, petrokemijo in
podobno industrijo (ISO 10434:2020)
Bolted bonnet steel gate valves for the petroleum, petrochemical and allied industries
(ISO 10434:2020)
Schieber aus Stahl mit geflanschtem Oberteil für die Erdöl-, petrochemische und
verwandte Industrien (ISO 10434:2020)
Robinets-vannes en acier à chapeau boulonné pour les industries du pétrole, de la
pétrochimie et les industries connexes (ISO 10434:2020)
Ta slovenski standard je istoveten z: EN ISO 10434:2020
ICS:
23.060.30 Zapirni ventili (zasuni) Gate valves
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 10434
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2020
EUROPÄISCHE NORM
ICS 75.180.20 Supersedes EN ISO 10434:2004
English Version
Bolted bonnet steel gate valves for the petroleum,
petrochemical and allied industries (ISO 10434:2020)
Robinets-vannes en acier à chapeau boulonné pour les Schieber aus Stahl mit geflanschtem Oberteil für die
industries du pétrole, de la pétrochimie et les Erdöl-, petrochemische und verwandte Industrien (ISO
industries connexes (ISO 10434:2020) 10434:2020)
This European Standard was approved by CEN on 21 August 2020.

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, 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, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 10434:2020 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 10434:2020) has been prepared by Technical Committee ISO/TC 153 "Valves"
in collaboration with 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 March 2021, and conflicting national standards shall
be withdrawn at the latest by March 2021.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 10434:2004.
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, 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, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 10434:2020 has been approved by CEN as EN ISO 10434:2020 without any modification.

INTERNATIONAL ISO
STANDARD 10434
Third edition
2020-08
Bolted bonnet steel gate valves for the
petroleum, petrochemical and allied
industries
Robinets-vannes en acier à chapeau boulonné pour les industries du
pétrole, de la pétrochimie et les industries connexes
Reference number
ISO 10434:2020(E)
©
ISO 2020
ISO 10434:2020(E)
© ISO 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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
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CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved

ISO 10434:2020(E)
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Pressure/temperature ratings . 3
5 Design . 4
5.1 Body wall thickness . 4
5.2 Bonnet wall thickness . 5
5.3 Body dimensions . 6
5.3.1 Flanged ends . . 6
5.3.2 Butt-welding ends. 7
5.3.3 Body seats . 9
5.4 Bonnet dimensions .10
5.5 Bonnet-to-body joint.11
5.6 Gate .12
5.7 Yoke .13
5.8 Stem and stem nut .13
5.9 Packing and packing box .15
5.10 Bolting .16
5.11 Operation .16
5.12 Auxiliary connections .17
6 Materials .19
6.1 Materials other than trim materials .19
6.2 Trim materials .20
6.3 Welding for fabrication and repair .22
7 Testing, inspection and examination .23
7.1 Pressure tests .23
7.1.1 General.23
7.1.2 Shell test .23
7.1.3 Closure tightness test . .23
7.1.4 Optional backseat tightness test .25
7.1.5 Optional closure tightness test .25
7.1.6 Fugitive emission testing .25
7.2 Inspection .26
7.2.1 Extent of inspection.26
7.2.2 Site inspection .26
7.3 Examination.26
7.4 Supplementary examination .26
8 Marking .26
8.1 Legibility .26
8.2 Body marking .27
8.3 Ring joint marking .27
8.4 Identification plate marking .
...