EN 736-3:2008

SLOVENSKI STANDARD
01-september-2008
1DGRPHãþD
SIST EN 736-3:2000
SIST EN 736-3:2000/A1:2002
Ventili - Terminologija - 3. del: Definicije izrazov
Valves - Terminology - Part 3: Definition of terms
Armaturen - Terminologie - Teil 3: Definition von Begriffen
Appareils de robinetterie - Terminologie - Partie 3 : Définition des termes
Ta slovenski standard je istoveten z: EN 736-3:2008
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.

EUROPEAN STANDARD
EN 736-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2008
ICS 01.040.23; 23.060.01 Supersedes EN 736-3:1999
English Version
Valves - Terminology - Part 3: Definition of terms
Appareils de robinetterie - Terminologie - Partie 3 : Armaturen - Terminologie - Teil 3: Definition von Begriffen
Définition des termes
This European Standard was approved by CEN on 14 December 2007.
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 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 Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
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EUROPÄISCHES KOMITEE FÜR NORMUNG
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© 2008 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 736-3:2008: E
worldwide for CEN national Members.

Contents Page
Foreword.3
Introduction .4
1 Scope .5
2 Normative references .5
3 Terms and definitions .5
3.1 Terms relating to pressure and temperature .5
3.2 Terms relating to dimensions.6
3.3 Terms relating to design .7
3.4 Terms relating to flow characteristics.8
3.5 Terms relating to operation .9
3.6 Terms relating to tests .9
Annex A (informative) Glossary .10

Foreword
This document (EN 736-3:2008) 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 July 2008, and conflicting national standards shall be withdrawn at the
latest by July 2008.
This document supersedes EN 736-3:1999.
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.
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, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.

Introduction
EN 736-3 harmonizes the definitions of terms for valves. EN 736-1 deals with the definitions of types of valves
and EN 736-2 with definitions of components.
It is possible that other terms and their definitions are found in other European standards.
Experts writing European standards are asked to use the terms and definitions given in this European
standard. If other terms and definitions are necessary or are published in other European standards, please
inform the secretariat of CEN/TC 69 so that the terms and definitions in these European standards can be
included or harmonized.
1 Scope
This European standard defines the terms and their definitions (or the source if defined in other European
standards) used for several types of valves or in several fields of application. These terms concern the
pressures and temperatures, the dimensions, the design, the flow control characteristics and the test of valves.
The terms and definitions in this European standard may also apply to products other than valves, in which
case it may be necessary to apply these definitions analogously.
This European standard covers terms common to more than one type of valve.
The terms and definitions specific to one type of valve, or to one application are found in the relevant product
standard or fitness for purpose standard.
2 Normative references
The following referenced documents are indispensable for the application 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 558, Industrial valves — Face-to-face and centre-to-face dimensions of metal valves for use in flanged
pipe systems — PN and Class designated valves
EN 764-1, Pressure equipment - Part 1: Terminology - Pressure, temperature, volume, nominal size
EN 1333, Flanges and their joints — Pipework components — Definition and selection of PN
EN 1759 (all parts), Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories,
Class designated
EN 12982, Industrial valves — End-to-end and centre-to-end dimensions for butt welding end valves
EN 60534-1, Industrial-process control valves — Part 1: Control valve terminology and general considerations
(IEC 60534-1:2005)
EN ISO 6708, Pipework components — Definition and selection of DN (nominal size) (ISO 6708:1995)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1 Terms relating to pressure and temperature
3.1.1
maximum allowable pressure
PS, Ps, ps: see EN 764-1
3.1.2
test pressure
P , p : see EN 764-1
test t
3.1.3
maximum/minimum allowable temperature
TS, t : see EN 764-1
S
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