EN 736-1:2018

Valves - Terminology - Part 1: Definition of types of valves

This European Standard specifies the denominations of valves to provide a uniform and systematic terminology for all types of valves.

Armaturen - Terminologie - Teil 1: Definition der Grundbauarten

Diese Europäische Norm legt die Benennung von Armaturen fest, um eine einheitliche und systematische Terminologie für alle Armaturenbauarten bereitzustellen.

Appareils de robinetterie - Terminologie - Partie 1 : Définition des types d'appareils

La présente Norme Européenne spécifie les dénominations des appareils de robinetterie pour fournir une terminologie uniforme et systématique pour tous les types d’appareils de robinetterie.

Ventili - Terminologija - 1. del: Definicija osnovnih vrst ventilov

Ta standard določa nazive ventilov. Njegov namen je zagotavljanje enotne in sistematične terminologije za vse tipe ventilov. Zaradi klasifikacije pojmov točka 4 določa pojme, ki se nanašajo na osnovne oblikovne značilnosti, točka 5 pa določa pojme, ki se nanašajo na funkcionalne značilnosti ventilov.

General Information

• Status: Published
• Publication Date: 27-Feb-2018
• Withdrawal Date: 30-Aug-2018
• ICS: 01.040.23 - Fluid systems and components for general use (Vocabularies)
• ICS: 23.060.01 - Valves in general
• Technical Committee: CEN/TC 69 - Industrial valves
• Drafting Committee: CEN/TC 69/WG 1 - Basic standards
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 29-Nov-2023
• Completion Date: 14-Apr-2025
• Ref Project: SIST EN 736-1:2018 - Valves - Terminology - Part 1: Definition of types of valves

Relations

• Replaces: EN 736-1:1995 - Valves - Terminology - Part 1: Definition of types of valves
• Effective Date: 07-Mar-2018

Overview

EN 736-1:2018 - Valves - Terminology - Part 1: Definition of types of valves (CEN) provides a uniform, systematic set of denominations and definitions for all types of valves. Approved by CEN in December 2017 and superseding EN 736-1:1995, this European Standard establishes clear terminology for valve classification by both design and function to ensure consistent communication across industry, documentation and procurement.

Key topics and requirements

• Scope: Specifies denominations of valves to provide a uniform valve terminology (Clause 1).
• Terms & definitions: Includes a formal definition of “valve” and other core terms used throughout the standard (Clause 3).
• Types related to design (Clause 4):
  • Defines basic valve types and the classification criteria: motion of the obturator and direction of flow toward the seating surface.
  • Covered basic types: gate valve, globe valve (including lift and axial check variants), plug and ball valve, butterfly and eccentric plug valve, and diaphragm valve.
  • Table 1 and Figures 1–11 illustrate typical designs and basic types.
• Types related to function (Clause 5):
  • Functional categories include isolating valve, regulating valve, control valve, safety valve, bursting disc safety device, check valve, diverting valve, mixing valve, automatic steam trap, and bleed valve.
  • Definitions clarify intended use (e.g., isolating = open/closed only; regulating = any intermediate position).
• Cross-references: EN 736-2 covers definition of valve components and is listed in the bibliography.

Practical applications

• Standardizes naming and classification for:
  • Technical specifications, datasheets and tender documents
  • Engineering drawings, P&IDs and documentation
  • Procurement and quality control to avoid ambiguity in orders
  • Training materials, textbooks and regulatory submissions
• Facilitates interoperability and clear communication across manufacturers, end-users and conformity assessment bodies in Europe.

Who should use this standard

• Valve manufacturers and designers
• Process, mechanical and piping engineers
• Procurement teams and specification writers
• Testing laboratories and conformity assessors
• Technical authors, trainers and standards committees

Related standards

• EN 736-2: Valves - Terminology - Part 2: Definition of components of valves (companion document defining components referenced in EN 736-1).

Using EN 736-1:2018 helps eliminate ambiguity in valve terminology, supports consistent product classification and improves clarity in industrial valve specifications across European and international projects.

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2018
1DGRPHãþD
SIST EN 736-1:2000
Ventili - Terminologija - 1. del: Definicija osnovnih vrst ventilov
Valves - Terminology - Part 1: Definition of types of valves
Armaturen - Terminologie - Teil 1: Definition der Grundbauarten
Appareils de robinetterie - Terminologie - Partie 1 : Définition des types d'appareils
Ta slovenski standard je istoveten z: EN 736-1:2018
ICS:
01.040.23 7HNRþLQVNLVLVWHPLLQVHVWDYQL Fluid systems and
GHOL]DVSORãQRUDER6ORYDUML components for general use
(Vocabularies)
23.060.01 Ventili na splošno Valves in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 736-1
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2018
EUROPÄISCHE NORM
ICS 01.040.23; 23.060.01 Supersedes EN 736-1:1995
English Version
Valves - Terminology - Part 1: Definition of types of valves
Appareils de robinetterie - Terminologie - Partie 1 : Armaturen - Terminologie - Teil 1: Definition der
Définition des types d'appareils Grundbauarten
This European Standard was approved by CEN on 17 December 2017.

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, 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
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 736-1:2018 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Types of valves related to design . 4
4.1 Basic types . 4
4.1.1 General . 4
4.1.2 Gate valve . 4
4.1.3 Globe valve . 4
4.1.4 Plug and ball valve . 4
4.1.5 Butterfly valve and eccentric plug valve . 5
4.1.6 Diaphragm valve. 5
4.2 Examples of basic types . 7
5 Types of valves related to function . 8
5.1 General . 8
5.2 Isolating valve . 8
5.3 Regulating valve . 8
5.4 Control valve . 8
5.5 Safety valve . 8
5.6 Bursting disc safety device . 8
5.7 Check valve . 9
5.8 Diverting valve . 9
5.9 Mixing valve . 9
5.10 Automatic steam trap . 9
5.11 Bleed valve . 9
Bibliography . 10

European foreword
This document (EN 736-1:2018) has been prepared by 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 August 2018 and conflicting
...