SIST EN 15714-3:2011

SLOVENSKI STANDARD
oSIST prEN 15714-3:2007
01-oktober-2007
Industrijski ventili - Pogoni - 3. del: Pnevmatski pogoni z delnim zasukom za
industrijske ventile - Osnovne zahteve
Industrial valves - Actuators - Part 3: Pneumatic part-turn actuators for industrial valves -
Basic requirements
Ta slovenski standard je istoveten z: prEN 15714-3
ICS:
23.060.20 Zapirni ventili (kroglasti in Ball and plug valves
pipe)
oSIST prEN 15714-3:2007 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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EUROPEAN STANDARD
DRAFT
prEN 15714-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2007
ICS

English Version
Industrial valves - Actuators - Part 3: Pneumatic part-turn
actuators for industrial valves - Basic requirements
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 69.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2007 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 15714-3:2007: E
worldwide for CEN national Members.

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prEN 15714-3:2007 (E)
Contents Page
Foreword.3
1 Scope .4
2 Normative references .4
3 Designation .5
4 Design requirements .5
5 Conformity assessment .16
6 Marking .17
7 Part-turn actuator selection guidelines.18
8 Documentation.18
Annex A (normative) Endurance test procedure.19
Annex B (informative) Actuator selection guidelines.21

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prEN 15714-3:2007 (E)
Foreword
This document (prEN 15714-3:2007) has been prepared by Technical Committee CEN/TC 69 “Industrial
valves”, the secretariat of which is held by AFNOR.
This document is currently submitted to the CEN Enquiry.


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prEN 15714-3:2007 (E)
1 Scope
This document provides basic requirements for pneumatic part-turn valve actuators, both double acting and
single acting, used for on-off and modulating control duties. It includes guidelines, recommendations and
methods for enclosure and corrosion protection, control and testing.
It does not apply to pneumatic actuators which are integral parts of control valves.
Other requirements, or conditions of use, different from those indicated in this document, shall be subject to
negotiations, between the purchaser and the manufacturer/supplier, prior to order.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated refer-
ences, only the edition cited applies. For undated references, the latest edition of the referenced document
(including any amendments) applies.
EN 292-1:1991, Safety of machinery — Basic concepts — General principles for design — Part 1: Basic ter-
minology, methodology
EN 292-2:1995, Safety of machinery — Basic concepts — General principles for design — Part 2: Technical
principles and specifications
EN 10204:1997, Metallic products — Types of inspection documents
prEN 12516-3:1996, Valves — Shell design strength — Part 3: Experimental method
EN 12570:2000, Industrial valves — Method for sizing the operating element
prEN 1503-3:2000, Valves — Materials for bodies, bonnets and covers — Part 3: Cast irons specified in
European Standards
EN 60529:2000, Degrees of protection provided by enclosures (IP Codes)
EN ISO 3231:1998, Paints and varnishes — Determination of resistance to humid atmospheres containing
sulphur dioxide
EN ISO 4628-1:1982, Paints and varnishes — Evaluation of degradation of paint coatings — Designation of
intensity, quality and size of common types of defect — Part 1: General principles and rating schemes
EN ISO 5211:2001, Industrial valves — Part-turn actuator attachments
EN ISO 9001:1994, Quality systems — Model for quality assurance in design, development, production, in-
stallation and servicing
EN ISO 9002:1994, Quality systems — Model for quality assurance in production, installation and servicing
ISO 7-1 Rp:1994, Pipe threads where pressure-tight joints are made on the threads — Part 1: Dimensions,
tolerances and designation
(ISO 4406:1999, Hydraulic fluid power — Fluids — Method for coding the level of contamination by solid parti-
cles)
ISO 9227:1990, Corrosion tests in artificial atmospheres — Salt spray tests
98/37/EU, Machinery Directive
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prEN 15714-3:2007 (E)
EU 97/23/EC-May 97, Pressure Equipment Directive
ANSI B1.20.1 1992, Pipe Threads, General Purpose (Inch)
EN 736-1:1995, Valves — Terminology — Part 1: Definition of types
EN 736-2:1997, Valves — Terminology — Part 2: Definition of components of valves
EN 736-3:1999, Valves — Terminology — Part 3: Definition of terms
ISO 5599-1:2001, Pneumatic fluid power — Five port directional control valves — Part 1: Mounting interface
surfaces without electrical connector
ISO 5599-2:2001, Pneumatic fluid power — Five port directional control valves — Part 2: Mounting interface
surfaces with optional electrical connector
ISO 5599-3:1990, Pneumatic fluid power — Five port directional control valves — Part 3: Code system for
communication of valve functions
ISO 8573-1:2001, Compressed air — Part 1: Contaminants and purity classes
ISO 8573-2:1996, Compressed air for general use — Part 2: Test method for aerosol oil content
ISO 8573-3:1999, Compressed air — Part 3:Test methods for measurement of humidity
ISO 8573-4:2001, Compressed air — Part 4: Test method for solid particle content
3 Designation
Part-turn actuators are designated by function, action and interface as detailed below.
3.1 Function
Isolating (On-Off) and/or control.
3.2 Action
 Double Acting (DA)
 Single Acting (SA) with spring action to move clock-wise (CW) or counter clock-wise (CCW), as per
clause 4.10.4
3.3 Valve actuator attachment
As per EN ISO 5211
4 Design requirements
The following data shall be provided by the manufacturer/supplier to enable correct actuator selection and per-
formance evaluation.
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prEN 15714-3:2007 (E)
4.1 Output torques
The guaranteed minimum output torque capability of the actuator, in both directions, at specified supply pres-
sures shall be provided by the manufacturer/supplier.
Where the output torque varies with the stroke, in a non-linear relationship, tabulated data and/or
torque/stroke curves shall be provided.
4.2 Design life of part-turn actuators
The actuator shall be designed to have a minimum design life, without maintenance, in accordance with
values given in Table 1. These are based on a load of at least 60 % of the rated torque at 0.55 MPa (5.5 bar)
supply pressure defined in clause 4.8 (Motive Energy) and in accordance with the test procedure detailed in
Annex A.
Table 1 — Minimum number of cycles for Part Turn Actuators
Piston or vane actuator Maximum stroking time
a
Nominal torque
Minimum number for testing,
(Nm)
b
based on 0-90° (s)
of cycles
500.000  3
≤ 125
500.000  5
≤ 1.000
≤ 2.000 250.000  8
100.000 15
≤ 8.000
25.000 20
≤ 32.000
10.000 30
≤ 63.000
≤ 125.000 5.000 45
c
1.000 60
≤ 250.000
a
Based on EN ISO 5211.
b
One cycle consists of nominal 90° angular travel in both directions (i.e. 90° to
open + 90° to close). For angular travel other than 90°, the design life shall be
agreed between the purchaser and the manufacturer/supplier.
c
For torque values above 250.000 Nm, the minimum number of cycles shall be
agreed between manufacturer/supplier and purchaser.

4.3 Minimum moving pressure
The actuator minimum moving pressure for double acting actuators, at ambient temperature, shall be made
available, by the manufacturer/supplier upon request.
4.4 Leakages
The actuator shall have no visible external leakage for the duration of the production test.
The test pressure shall be nominal pressure (0.55 MPa ≅ 5.5 bar).
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prEN 15714-3:2007 (E)
The minimum duration for the leakage detection test shall be:
15 seconds for volumes up to and including 2 litres.
30 seconds for volumes up to and including 5 litres.
60 seconds for volumes above 5 litres.
4.5 Moving time
The actuator manufacturer/supplier shall state the moving time in both directions, without external load and
without valve, at nominal pressure and without any significant external restriction on supply flow rate and ex-
haust.
4.6 Angle for part-turn actuators
Part-turn actuators without adjustable end-stops shall be designed for an output movement of 90° (- 0°, + 2°)
as standard.
For part-turn actuators with adjustable end-stops and a standard nominal output movement of 90°, the ad-
justment range shall be stated by the manufacturer/supplier but shall be, at least, ± 3°.
Other angles are subject to agreement between the manufacturer/supplier and purchaser.
4.7 Air volume
The manufacturer/supplier shall indicate the internal actuator displaced volume (litres) for both directions, in-
cluding the dead volumes.
4.8 Motive energy
4.8.1 Operating medium
The operating medium should be compressed air, unless otherwise specified.
Other compressed gases or pressurised fluids may be used, on agreement between the manufac-
turer/supplier and purchaser, ensuring they are compatible with internal actuator parts and lubricants.
4.8.2 Quality
The operating medium must have a dew point equal to – 20 °C or, at least, 10 °C below the ambient tempera-
ture (ISO 8573 Part 1, Class 3). The maximum particle size shall not exceed 40 µm (ISO 8573 Part 1, Class 5).
If the operating medium is instrument air, it shall be dust-free and oil-free.
4.8.3 Pressure
The manufacturer/supplier shall indicate the actuator’s pressure limits. The maximum operating pressure shall
be 0.8 MPa (8 bar), unless otherwise specified. The minimum design pressure for pressurised parts shall be
1.5 times the maximum operating pressure.
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prEN 15714-3:2007 (E)
4.9 Environmental conditions
4.9.1 Ambient temperature
The actuator shall be designed, as a standard, for operation at a minimum ambient temperature range be-
tween – 20 °C and + 60 °C, unless otherwise agreed between the manufacturer/supplier and purchaser.
4.9.2 Enclosure protection
The non pressurised enclosure of the actuator shall be at least IP 54 according to EN 60529 (excluding the
exhaust port).
4.9.3 Corrosion protection
The actuator corrosion protection shall meet at least the following corrosion type tests:
 Salt spray test (NSS): according to ISO 9227 (12/91): minimum duration of the exposure shall be
96 hours.
 Corrosion rates shall be evaluated according to EN ISO 4628 (1982).The minimum rate shall be:
 Rusting (R ) ≤ 1
i
 Blistering ≤ 2 (S2)
The test shall be carried out on the assembled actuator. Pressure connections and venting orifices shall be
sealed.
Test conditions for other particular environments (e.g. sulphur dioxide test according to EN ISO 3231) shall be
subject to an agreement between the manufacturer/supplier and the purchaser.
4.10 Basic design
4.10.1 Safety requirements
Actuators shall be designed taking into account the technical principles and specifications for safety of
machinery given in EN 292 Parts 1 and 2. The design of spring return actuators shall permit the safe assem-
bly/disassembly, when complying with the manufacturer/supplier’s instructions.
4.10.2 Part-turn valve actuator attachment
The valve attachment for part-turn actuators shall comply with EN ISO 5211: Industrial valves — Part-Turn
Actuator Attachments.
The output drive of part-turn actuators may be an integral part or a removable component.
The material of the drive component shall be clearly indicated in the supplier’s literature.
4.10.3 Pressure connections
The actuators shall normally have two pressure connections.
The position, location, orientation and form of the pressure connections shall be established by the manufac-
turer.
Connections shall be clearly identified with numbers (2 and 4), in accordance with ISO 5599-2.
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prEN 15714-3:2007 (E)
When pressurised, direction of movement shall be in accordance with Table 2 below unless otherwise speci-
fied.
Table 2 — Identification of the part-turn actuator pressure connections
Connection 2 Connection 4
Direction of movement (when viewed from
the ancillaries' mounting interface)
Counter-clockwise Clockwise

4.10.3.1 Pressure connections for remotely mounted pilot valves
Table 3 — Dimensions of the pressure connections
D4
(min)
Air Volume "T“
c, d
a b
mm
"V“ in litres (min.)
ISO 7/1 Rp (BSPP) ANSI B1-20.1 (NPT)
V < 1 1/8“  8  7
0,5 < V < 10 1/4“ 12 11
5 < V < 25 3/8“ 13 11
10 < V < 50 1/2“ 16 14
25 < V < 100 3/4“ 17 15
V > 50 1“ 20 17
a
Air volume as defined in clause 4.7. The relationship between air volume "V" and dimensions of connections "2"
and "4" are given as guidelines.
b
According to ISO 7/1 Rp (BSPP) or ANSI B1-20-1 1992 (NPT).
c
Min. proof stress of material Rp 0,2 > 150 MPa and 0,8 MPa (8 bar) maximum operating pressure.
d
"B" designation for ISO 7/1 Rp pressure connections or "N" designation for ANSI B1-20-1. The actuator pressure
connections shall be properly marked to indicate the type of thread ("B" for BSPP and "N" for NPT).

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prEN 15714-3:2007 (E)

Figure 1 — Dimensions of pressure connections for remotely mounted pilot valves
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prEN 15714-3:2007 (E)
4.10.3.2 Pressure connections for direct mounted pilot valves

Figure 2 — Dimensions of pressure connections for direct mounted pilot valves
Table 4 — Dimensions of pressure connections for direct mounted pilot valves
b c
Type of pressure Air Volume
D1 D2 D3 M
T D4 min.
d a
mm mm mm mm
connection flange „V“ in litres mm
B1/N 1 V < 1 ⅛“ 32 24  8  8 M5
B2/N 2 0,5 < V < 10 ¼“ 32 24  8 12 M5
B3/N 3 5 < V < 25 ⅜“ 45 40 10 13 M6
B4/N 4 10 < V < 50 ½“ 45 40 10 16 M6
a
Air volume as defined in clause 4.7. The relationship between air volume "V" and dimensions of connections "2"
and "4" are given as guidelines.
b
According to ISO 7/1 Rp (BSPP) or ANSI B1-20-1 1992 (NPT).
c
Min. proof stress of material Rp 0,2 > 150 MPa and 0,8 MPa (8 bar) maximum operating pressure.
d
"B" designation for ISO 7/1 Rp pressure connections or "N" designation for ANSI B1-20-1 connections. The actuator
hall have a suitable surface, to allow correct sealing of the ancillary component around the threaded connections
"2" and "4" (see Figure 2) which shall be properly marked to indicate the type of thread ("B" for BSPP and "N" for
NPT).

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prEN 15714-3:2007 (E)
4.10.4 Fail safe direction for spring return actuators
For spring return actuators, the direction of movement, on loss of supply pressure, must be clearly and per-
manently indicated in accordance with Figure 3 (see clause 6).

3a — Turn clockwise (CW) 3b — Turn counter clockwise (CCW)
Figure 3 — Fail safe directions for part-turn actuators
4.10.5 Mechanical safety factors
Pressurised actuator enclosures shall be designed with minimum safety fac
...