EN 331:1998/A1:2010

SLOVENSKI STANDARD
01-junij-2011
5RþQHNURJHOQHSLSHLQ]DVXQL]DKLãQHSOLQVNHQDSHOMDYH'RSROQLOR$
Manually operated ball valves and closed bottom taper plug valves for gas installations
for buildings
Handbetätigte Kugelhähne und Kegelhähne mit geschlossenem Boden für die Gas-
Hausinstallation
Robinets a tournant sphérique et robinets a tournant conique a fond plat destinés a etre
manoeuvrés manuellement et a etre utilisés pour les installations de gaz dans les
bâtiments
Ta slovenski standard je istoveten z: EN 331:1998/A1:2010
ICS:
23.060.20 Zapirni ventili (kroglasti in Ball and plug valves
pipe)
91.140.40 Sistemi za oskrbo s plinom Gas supply systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 331:1998/A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2010
ICS 23.060.20
English Version
Manually operated ball valves and closed bottom taper plug
valves for gas installations for buildings
Robinets à tournant sphérique et robinets à tournant Handbetätigte Kugelhähne und Kegelhähne mit
conique à fond plat destinés à être manoeuvrés geschlossenem Boden für die Gas-Hausinstallation
manuellement et à être utilisés pour les installations de gaz
dans les bâtiments
This amendment A1 modifies the European Standard EN 331:1998; it was approved by CEN on 30 October 2010.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this
amendment into the relevant 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 amendment 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, Croatia, 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.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 331:1998/A1:2010: E
worldwide for CEN national Members.

Contents Page
Foreword .3
General .4
1 Modification to the Scope .5
2 Modifications to Clause 2, Normative references .5
3 Modifications to Clause 3, Definitions .6
4 Modifications to Clause 4, Classification .7
5 Modifications to Clause 5, Construction requirements .7
6 Modifications to Clause 6, Performance requirements . 10
7 Modifications to Clause 7, Test methods . 11
8 Modifications to Clause 8, Marking, installation and operating instructions and packaging . 14
8 Evaluation of conformity . 14
9 Addition of new Clause 9 . 21
9 Marking . 21
10 Addition of new Clause 10 . 21
10 Installation and operating instructions . 21
11 Deletion of annexes . 22
12 Addition of new Annex ZA . 22

Foreword
This document (EN 331:1998/A1:2010) has been prepared by Technical Committee CEN/TC 236 “Non
industrial manually operated shut-off valves for gas and particular combinations valves-other products”, the
secretariat of which is held by UNI.
This Amendment to the European Standard EN 331:1998 shall be given the status of a national standard,
either by publication of an identical text or by endorsement, at the latest by June 2011, and conflicting national
standards shall be withdrawn at the latest by June 2011.
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 has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive(s).
For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document.
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, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
General
In the whole text of EN 331:1998 replace:
 "closure member" with "obturator",
 "union connection" with "joint",
 "flexible connection" with "flexible appliance connector",
 "flow restrictor" with "pressure limiting device".
Modify the clause numbering in relation to the modifications listed hereafter and correct the cross references
in text accordingly:
Old numbering New numbering Old numbering New numbering
5.1.1 5.1 5.1.3.1.1 5.3.1.1
5.1.1.1 5.1.1 5.1.3.1.2 5.3.1.2
5.1.1.2 5.1.2 5.1.3.1.3 5.3.1.3
5.1.1.3 5.1.3 5.1.3.2 5.3.2
5.1.1.4 5.1.4 5.1.3.3 5.3.3
5.1.1.5 9 5.1.3.4 5.3.4
5.1.1.6 5.1.5 5.1.3.5 5.3.5
5.1.1.7 5.1.6 5.1.3.6 5.3.6
5.1.1.8 5.1.8 5.1.4 5.4
5.1.2 5.2 5.2 5.5
5.1.2.1 5.2.1 5.2.1 5.5.1
5.1.2.2 5.2.2 5.2.2 5.5.2
5.1.2.3 5.2.3 5.3 5.6
5.1.2.4 5.2.4 5.4 5.7
5.1.2.5 5.2.5 6.6 6.7
5.1.2.6 5.2.6 6.6.1 6.7.1
5.1.2.6.1 5.2.6.1 6.6.2 6.7.2
5.1.2.6.2 5.2.6.2 6.7 6.8
5.1.2.7 5.2.7 7.6.4 7.6.3
5.1.3 5.3 7.6.5 7.6.4
5.1.3.1 5.3.1
Modifications to the text of EN 331:1998.
1 Modification to the Scope
Replace the second paragraph of 1.1 with the following:
"It applies to metallic valves for domestic and commercial not directly buried installations inside or outside of
buildings, using gases of the first, second and third family (specified in EN 437) and working up to
5 5 5
0,2 × 10 Pa, 0,5 × 10 Pa and 5 × 10 Pa."
NOTE "Not directly buried" within the context of this standard means that valves below ground are not in direct
contact with earth or other materials e.g. that they are in a protected encasement.
2 Modifications to Clause 2, Normative references
Replace the first paragraph with the following:
"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."
Add the references to the following standards in the appropriate order:
"EN 682, Elastomeric Seals — Materials requirements for seals used in pipes and fittings carrying gas and
hydrocarbon fluids
EN 751-1, Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot
water — Part 1: Anaerobic jointing compounds
EN 751-2, Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot
water — Part 2: Non-hardening jointing compounds
EN 751-3, Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot
water — Part 3: Unsintered PTFE tapes
EN 1092-1, Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, PN
designated — Part 1: Steel flanges
EN 1092-2, Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, PN
designated — Part 2: Cast iron flanges
EN 1092-3, Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, PN
designated — Part 3: Copper alloy flanges"
"EN 1503-1, Valves — Materials for bodies, bonnets and covers — Part 1: Steels specified in European
Standards
EN 1503-3, Valves — Materials for bodies, bonnets and covers — Part 3: Cast irons specified in European
Standards
EN 1503-4, Valves — Materials for bodies, bonnets and covers — Part 4: Copper alloys specified in European
Standards
EN 1555-3, Plastics piping systems for the supply of gaseous fuels — Polyethylene (PE) — Part 3: Fittings
EN 1593:1999, Non-destructive testing — Leak testing — Bubble emission techniques
EN 1775:2007, Gas supply — Gas pipework for buildings — Maximum operating pressure less than or equal
to 5 bar — Functional recommendations
EN 10226 (all parts), Pipe threads where pressure tight joints are made on the threads
EN 12627, Industrial valves — Butt welding ends for steel valves
EN 13501-1, Fire classification of construction products and building elements — Part 1: Classification using
data from reaction to fire tests
EN 60730-1:2000, Automatic electrical controls for household and similar use — Part 1: General requirements
(IEC 60730-1:1999, modified)
EN ISO 6708, Pipework components — Definition and selection of DN (nominal size) (ISO 6708:1995)
EN ISO 9227, Corrosion tests in artificial atmospheres — Salt spray tests (ISO 9227:2006)"
Delete the reference to ISO 228 and replace it with "EN ISO 228-1, Pipe threads where pressure-tight joints
are not made on the threads — Part 1: Dimensions, tolerances and designation (ISO 228-1:2000)".
Delete the references to ISO 7 and ISO 7005.
Delete the reference to prEN 1254 and replace it with the following:
"EN 1254-1, Copper and copper alloys — Plumbing fittings — Part 1: Fittings with ends for capillary soldering
or capillary brazing to copper tubes
EN 1254-2, Copper and copper alloys — Plumbing fittings — Part 2: Fittings with compression ends for use
with copper tubes"
3 Modifications to Clause 3, Definitions
Replace the term "3.3.1 closure member" with "3.3.1 obturator".
Replace term "3.3.4 compression joint" and the relevant definition with the following:
"3.3.4
mechanical joint
joint in which gas tightness is achieved by compression with or without a seal
NOTE This joint can be easily disassembled and reassembled."
Replace terms "3.3.6 union connection" and "3.3.7 flexible connection" and the relevant definitions with the
following:
"3.3.6
joint
means of connecting elements of a gas installation
[EN 1775:2007]
3.3.7
flexible appliance connector
element of flexible pipework to be fitted between the end of fixed pipework and the appliance inlet connection
[EN 1775:2007]"
Replace the definition of 3.5.3 as follows: "maximum pressure at which a valve can be operated continuously
under normal operating conditions".
Add the following term and definition:
"3.10
DN (nominal size)
see EN ISO 6708"
4 Modifications to Clause 4, Classification
Replace the title of "4.1 Pressure classes" with "4.1 Internal pressure classes".
Replace Table 1 in 4.1 with the following table:
"Table 1 — Valve pressure classes
Class Pressure range Remark
MOP 0,2 5 5
0 to 0,2 x 10 Pa MOP = 0,2 x 10 Pa
MOP 0,5 5 5
0 to 0,5 x 10 Pa MOP = 0,5 x 10 Pa
MOP 5 5 5
0 to 5  x 10 Pa MOP = 5  x 10 Pa

"
5 Modifications to Clause 5, Construction requirements
Delete the title "5.1 General" and renumber the subclauses in Clause 5 as indicated in the table in General on
page 4 of this Amendment 1.
Replace 5.1.1.1 with the following:
"5.1.1 Any part in contact with the gas or the surrounding atmosphere, shall be manufactured from
corrosion-resistant materials or shall comply with salt spray test (see 7.6.3), if relevant.
The corrosion protection for springs and other moving parts shall not be impaired by any movement."
Replace 5.1.1.3, 5.1.1.4, 5.1.1.5, 5.1.1.6, 5.1.1.7 and 5.1.1.8 with the following:
"5.1.3 Material indicated in 5.1.8, b) and c), excluding a), shall be tested in accordance with 7.6.3 (salt spray
resistance).
Once the test has been run, no corrosion which could impair the device's operation shall be revealed by visual
examination (disregarding possible salt deposits), and the external tightness of the device (connected and
disconnected) remains in conformity with the requirement defined in 6.2 (leak-tightness).
5.1.4 Springs and other moving parts manufactured from non-corrosion-resistant materials shall be
protected against corrosion and shall retain their protective coating despite any movement resulting from the
operation of the valve. After the test of 7.6 these parts shall withstand the test of 7.6.3.
5.1.5 Elastomeric materials shall comply with EN 549 or EN 682 as appropriate to the intended use.
5.1.6 Lubricants shall comply with EN 377.
5.1.7 Anaerobic jointing compounds shall comply with EN 751-1.
5.1.8 The shell, obturator and stem shall be made in one of the following materials:
1)
a) copper alloy excluding Aluminium-bronze ;
2)
b) ductile cast iron excluding laminar cast iron ;
3)
c) forged steel and cast steel ."
Modify the relevant footnotes as follows:
1)
" On this subject EN 1503-4 is available."
2)
" On this subject EN 1503-3 is available."
3)
" On this subject EN 1503-1 is available."
Replace 5.1.2.2 with the following:
"5.2.2 Product appearance
All valve components, when viewed with the naked eye corrected for normal vision, shall be free from sharp
edges and corners which could cause damage, injury or incorrect operation."
Replace 5.1.2.3 with the following:
"5.2.3 Valve maintenance
All valves shall be designed to be maintenance free for a reasonable economic working life."
Replace the title of "5.1.3 Connections" with "5.3 Joints" and renumber the subclauses in the former 5.1.3 as
indicated in the table in General on page 4 of this Amendment 1.
Replace 5.1.3.1.1 with the following:
"5.3.1.1 Threaded inlet and outlet connections for valves with pressure-tight joints made on the threads,
shall comply with EN 10226."
Replace 5.1.3.1.2 with the following:
"5.3.1.2 Pressure-tight joints shall comply with either EN 10226-1, ISO 261 or, EN ISO 228-1."
Change the title of "5.1.3.2 Flanges" to "5.3.2 Bolted flange joint".
In the first paragraph of the old 5.1.3.2 (new 5.3.2) replace "ISO 7005" with "EN 1092-1, EN 1092-2 and
EN 1092-3".
Replace 5.1.3.3 with the following:
"5.3.3 Capillary soldered or capillary brazed joints
The dimensions of connections for capillary soldered and capillary brazed joints shall comply with EN 1254-1."
Replace 5.1.3.5 with the following:
"5.3.5 Compression joints
The dimensions of the construction of the compression joints shall comply with EN 1254-2."
Replace the old 5.1.3.6 (new 5.3.6) with the following:
"Butt welded ends for steel valves shall comply with EN 12627."
Add the following new subclause:
"5.3.7 Valves with polyethylene joints
Polyethylene joints shall be in accordance with EN 1555-3."
Replace 5.1.4 with the following:
"5.4 Seals
Sealing on the obturator shall be constructed so that tightness is achieved by mechanical means. This shall
exclude the use for this purpose of all sealing materials such as liquids, pastes and tapes.
The tightness between the different parts of the body shall be assured by mechanical means. Additional
products, like glues, pastes, tapes, split pins, …. may be used in order to maintain the mechanical tightness. If
glues, pastes, tapes are used, they shall comply with EN 751-1, EN 751-2 and EN 751-3."
Replace 5.3 with the following:
"5.6 Stops
On valves the end positions "open" and "closed" shall be limited by fixed, non adjustable stops.
The manual actuator shall be designed so that it is:
 at right angles to the direction of the flow for the closed position;
 parallel with the direction of the flow for the open position.
Each part of the operating mechanism that can rotate shall be marked in an unambiguous way of
understanding whether it is in closed or open position. The valve shall be operated only by means of the
operating mechanism provided with the original valve by the manufacturer.
If any parts of the operating mechanism are dismounted, they shall be reassembled in the correct way
assuring the correct operation.
The valve may include a locking system which allows the valve to be blocked and sealed in the shut-off
position."
Replace 5.4 with the following:
"5.7 Resistance to high temperature (for internal networks)
The manually operated ball valves and closed bottom taper plug valves shall comply with the high
temperature resistance requirements of EN 1775:2007, Annex A, procedure B."
6 Modifications to Clause 6, Performance requirements
In 6.2 delete the second sentence in the first paragraph ("Valves which may be … closure parts").
Modify the beginning of the second paragraph of 6.2 as follows: "Leak-tightness for all the leak-tightness and
strength tests (bending and torque) shall be …"
Replace the title of "6.3 Rated flow rate" with "6.3 Effectiveness – Rated flow rate" and the title of
"6.4 Operating torque" with "6.4. Mechanical strength of the operating torque".
In 6.4 replace the second sentence in the first paragraph with the following: "The operating torque at low
temperature shall be measured and recorded for use in accordance with 6.7 and 7.8."
Replace Table 4 in 6.4 with the following:
"Table 4 — Operating torque
DN Torque (N · m)
at ambient temperature
max.
< 15 4
15 7
32 14
"
Replace the title of "6.5 Torque and bending resistance" with "6.5 Torque and bending mechanical
strength".
Add the following new sub-clause:
"6.6 Reaction to fire
Manually operated ball valves and closed bottom taper plug valves in compliance with this standard are
classified as belonging to Class A1 "No contribution to fire" when made of materials included in Commission
Decision 96/603/EC (OJEU L267 of 19.10.1996), as amended by EC Decision 2000/605/EC (OJEU L258 of
12.10.2000) and Decision 2003/424/EC (OJEU L144 of 12.6.2003).
Products which are subject to a coating containing more than 1,0 % by weight or volume (whichever is the
lower) of homogeneously distributed synthetic material shall be tested and classified according to
EN 13501-1."
In new 6.7.1 (which was former 6.6.1) replace the second sentence in the second paragraph with the
following: "It shall comply with the requirements for operating torque in accordance with 6.4."
Replace the text of 6.7 Stop resistance with the following:
"6.8 Safeguard against overloading of the handle – Stop resistance
When tested in accordance with 7.8, the stops in the open or closed position shall withstand minimum
1,5 times the maximum operating torque selected between ambient and low temperature torque, whichever is
the higher."
Add the following new sub-clause:
"6.9 Release of dangerous substances
Materials used in valves shall not release any dangerous substances in excess of the maximum permitted
levels specified in a relevant European Standard for the material or permitted in the national regulations of the
member state of destination."
7 Modifications to Clause 7, Test methods
Replace the last sentence of 7.1.1 with the following:
"When there are several declared mounting positions, the least favourable position shall be selected."
Replace the text of 7.1.2 with the following:
"Three samples of each size of valve shall be tested according to Table 7."
Replace Table 7 in 7.1.2 with the following:

"Table 7 — Test samples, testing and compliance criteria
a
Characteristic Requirement Assessment method Compliance criteria
No. of samples
[name of the [clause where [clause where the [clause where criteria
[number of samples to
characteristic] requirement is given] method is given] are given]
be assessed]
Reaction to fire 6.6
Deemed to satisfy
Class A1
Dimensional tolerances 5.3 EN 10226-1, ISO 261, EN 10226-1, ISO 261,
EN ISO 228-1, EN ISO 228-1,
EN 1092-1, EN 1092-2, EN 1092-1, EN 1092-2,
or EN 1092-3 or EN 1092-3
Internal pressure: 6.2 7.2 3 (samples n. 1, n. 2, 7.2
- leak-tightness and n. 3)
Tightness (gas): 6.2 7.2 3 (samples n. 1, n. 2, 7.2
- leak tightness and n. 3)
Effectiveness: 6.3 7.3 1 (sample n. 2) 7.3
- rated flow rate
Resistance to high 5.7 EN 1775:2007, 2 (supplementary EN 1775:2007,
b
temperature (for Annex A, procedure B Annex A, procedure B
samples 4 and 5 )
internal networks)
Mechanical strength 6.5 7.5 1 (sample n. 2) 7.5
(for gas networks):
- torque and bending
resistance
Mechanical strength 6.4 7.4 3 (samples n. 1, n. 2, 7.4
(for gas networks): and n. 3)
- operating torque
Safeguard against 6.8 7.8 1 (sample n. 1) 7.8
overloading of handle
(for gas networks): stop
resistance
Durability: 6.7.1 7.6.1 1 (sample n. 3) 7.6.1
- endurance
Durability: 6.7.2 7.6.2 1 (sample n. 3) 7.6.2
- resistance to low
temperature
Durability: 5.1.1 and 5.1.3 7.6.3 1 (sample n. 3) 7.6.3
- salt spray resistance
Durability: 5.1 7.6.4 1 (sample n. 3) 7.6.4
- resistance to humidity
Angular seal 5.2.7 7.7 1 (sample n. 1) 7.7
a
This column indicates both the total amount of samples to be assessed for each test and which of the three samples of each size of
valve shall be used for each test (i.e. sample n. 1, n. 2, and/or n. 3, or samples n. 4, n. 5).
b
Where applicable, high temperature resistance test shall be performed on supplementary samples n. 4 (internal leak) and n. 5
(external leak).
"
Replace the title of "7.2 Leak-tightness" with "7.2 Internal pressure and leak-tightness".
Replace the whole text of 7.2.1 with the following:
"The test shall be carried out in accordance with EN 1593:1999, applying the immersion technique with direct
pressurization of the object (see 8.1, 8.2.1 and 8.3 of EN 1593:1999) and making measurements according to
Annex A of EN 1593:1999.
3 3
The uncertainty of measurement shall not be greater then 5 cm /h and the resolution shall be 1 cm .
A valve is leak-tight when the measured leakage rate does not exceed 20 cm /h. It includes the equipment
accuracy, measurement errors and apparent leakages mainly due to temperature variations.
The test shall be carried out over a period of 10 min with the test pressure of:
 600 Pa for all classes and
 0,3 x 10 Pa for class MOP 0,2 or
 0,75 x 10 Pa for class MOP 0,5 or
 7,5 x 10 Pa for class MOP 5 or
 20 x 10 Pa for class MOP 5 (20), where applicable."
Replace the title of "7.3 Rated flow rate" with "7.3 Effectiveness – Rated flow rate".
Replace the first sentence of 7.3.1 with the following:
"Using the apparatus, as shown in Figure 2, the test is carried out on the valve, which shall include any of its
integral means of insulation and safety devices."
Replace the title of "7.4 Operating torque" with "7.4 Mechanical strength of the operating torque" and the
title of "7.5 Torque and bending resistance" with "7.5 Torque and bending mechanical strength ".
In the first and second indents [a) and b)] of 7.5.2.1.1 replace "Screw" with "Assemble"; besides, in the first
indent replace "equal to or greater than 2 DN" with "≥ 2 DN" and in the second indent replace the last
sentence with "Ensure that the joints are leak-tight".
Replace the third indent (c) of 7.5.2.2.1 with the following:
"c) With the stress removed, measure the external and internal leak-tightness according to 6.2 and check the
operating torque according to 6.4 and visually for any deformation."
In the second indent (b) of 7.5.3 replace "and material for this type of fitting" with "and of appropriate material
for this type of fitting".
Replace the whole text of 7.6.2 with the following:
"Prior to the endurance test in 7.6.1, the sample is maintained at a temperature of either –5 °C, –20 °C
or -40 °C (depending on class) for 23 h.
The sample is then subjected to a test pressure as specified in 7.2.1.
The operating torque is measured immediately after removal from the low temperature chamber in
accordance with 7.4."
Delete 7.6.3.
Replace 7.6.4 with the following and delete Figure 6:
"7.6.3 Salt spray resistance
This test shall be carried out on device N° 3; following the requirements of EN ISO 9227, for a neutral salt
spray (NSS).
The device shall not be under pressure and shall be disconnected.
If it was designed by the manufacturer, the protection shall be positioned at the outlet of the device.
The inlet of the device shall be closed by a cap.
The test chamber shall spray a saline solution having a mass concentration of (5 ± 0,5) % sodium chloride in
distilled water.
The intensity of the spray shall be such that, for each 80 cm of horizontal collecting surface, (2 ± 1) ml of
solution are collected per hour.
The test chamber shall be maintained at a temperature of (35 ± 1) °C.
The test lasts (96 ± 1) h."
Replace the text of 7.8 with the following:
"7.8 Safeguard against overloading of the handle – Stop resistance
The operating torque at the low temperature shall be measured at the minimum operating temperature
(see 6.4).
Apply the operating torque selected between ambient temperature and low temperature torque, whichever is
the higher, in accordance with 6.7, to the actuator. Check the valve, after the torque is removed, visually for
any deformation, cracking or failure of the mechanism."

8 Modifications to Clause 8, Marking, installation and operating instructions and
packaging
Replace Clause 8 with the following:
"
8 Evaluation of conformity
8.1 General
The compliance of manually operated ball valves and closed bottom taper plug valves with the requirements
of this European Standard and with the stated values shall be demonstrated by:
 initial type testing,
 factory production control by the manufacturer including product assessment.
NOTE The assignment of tasks to the notified body(ies) and the manufacturer is shown in Table ZA.3.
The manufacturer shall always retain the overall control and shall have the necessary means to take
responsibility for the product.
8.2 Initial type testing
8.2.1 General
Initial type testing shall be performed to demonstrate compliance with this European Standard.
All essential characteristics for which the manufacturer declares performances, are subject to Initial Type
Testing. In addition, the need to perform Type Tests applies to all other characteristics included in a standard
when the manufacturer claims compliance, unless the standard gives provisions (e.g. use of previously
existing data, CWFT and conventionally accepted performance) for declaring performances without
performing tests.
Test previously performed in accordance with the provisions of this standard, may be taken into account
providing that they were made to the same or a more rigorous test method under the same system of
attestation of conformity on the same product or products of similar design, construction and functionality,
such that the results are applicable to the product in question.
NOTE 1 Same system of attestation of conformity means testing by an independent third party under the responsibility
of a product certification body, where relevant.
For the purpose of testing (including the FPC), product may be grouped into families where it is considered
that the results for one or more characteristics from any one product of the family are representative for all the
valves within that family.
NOTE 2 Products may be in different families for different characteristics.
NOTE 3 Reference to the test method standards should be made to allow the selection of a suitable representative
sample.
In addition, Initial Type Testing shall be performed for all characteristics in the standard for which the
manufacturer declares performances:
 at the beginning of the production of a new or modified manually operated ball valve and closed bottom
taper plug valve; or
 at the beginning of a new or modified method of production (where this may affect the stated properties);
or
they shall be repeated for the appropriate characteristic(s), whenever a change occurs in the manually
operated ball valves and closed bottom taper plug valves design, in the raw material or in the supplier of the
components, or in the production process (subject to the definition of a family), which would affect significantly
one or more of the characteristics.
Where components are used whose characteristics have already been determined by the component
manufacturer, on the basis of compliance with other product standards, these characteristics need not to be
re-assessed. The specifications of these components shall be documented, as shall the inspection scheme for
ensuring their compliance.
Products CE marked in accordance with appropriate harmonised European specifications may be presumed
to have the performances stated with the CE marking, although this does not replace the responsibility of the
manually operated ball valves and closed bottom taper plug valves designer to ensure that the manually
operated ball valve and closed bottom taper plug valve as a whole is correctly designed and its components
have the necessary performance values to meet the design.
8.2.2 Test samples, testing and compliance criteria
Test samples of valves shall be representative of the current production.
The number of valves tested per product family shall be determined according to 7.1.2. Tests shall be
performed according to the given test sequence and compliance criteria.
8.2.3 Test reports
All Initial Type tests and their results shall be documented in test reports. All test reports shall be retained by
the manufacturer for at least 10 years after the last date of production of the manually operated ball valves
and closed bottom taper plug valves to which they relate.
8.3 Factory production control (FPC)
8.3.1 General
The manufacturer shall establish, document and maintain a FPC system to ensure that the products placed on
the market conform to the declared performance characteristics. The FPC system shall consist of procedures,
regular inspections and tests and/or assessments and the use of results to control raw and other incoming
materials or components, equipment, the production process and the product.
All the elements, requirements and provisions adopted by the manufacturer shall be documented in a
systematic manner in the form of written policies and procedures. This production control system
documentation shall ensure a common understanding of conformity evaluation and enable the achievement of
the required product characteristics and the effective operation of the production control system to be
checked.
Factory production control therefore brings together operational techniques and all measures allowing
maintenance and control of the compliance of the product with this technical specification.
8.3.2 General requirements
8.3.2.1 General
The manufacturer is responsible for organising the effective implementation of the factory production control
system. Tasks and responsibilities in the production control organisation shall be documented and this
documentation shall be kept up-to-date.
In each factory the manufacturer may delegate the action to a person having the necessary authority to:
a) identify procedures to demonstrate compliance of the product at appropriate stages;
b) identify and record any instance of non-conformity;
c) identify procedures to correct instances of non-conformity.
The manufacturer shall draw up and keep up-to-date documents defining the factory production control which
he applies. The manufacturer’s documentation and procedures should be appropriate to the product and
manufacturing process. All FPC systems should achieve an appropriate level of confidence in the conformity
of the product. This involves:
a) the preparation of documented procedures and instructions relating to factory production control
operations, in accordance with the requirements of the reference technical specification;
b) the effective implementation of these procedures and instructions;
c) the recording of these operations and their results;
d) the use of these results to correct any deviations, repair the effects of such deviations, treat any resulting
instances of non-conformity and, if necessary, revise the FPC to rectify the cause of non-conformity.
Where subcontracting takes place, the manufacturer shall retain the overall control of the product and ensure
that he receives all the information that is necessary to fulfil his responsibilities according to this European
Standard.
If the manufacturer has part of the product designed, manufactured, assembled, packed, processed and/or
labelled by subcontracting, the FPC of the subcontractor may be taken into account, where appropriate for the
product in question. The manufacturer who subcontracts all of his activities may in no circumstances pass
these responsibilities on to a subcontractor.
Manufacturers having an FPC system which complies with EN ISO 9000 series and which addresses the
requirements of this harmonised standard are recognised as satisfying the FPC requirements of the
Construction Product Directive.
8.3.2.2 Personnel
The responsibility, authority and the relationship between personnel that manages, performs or verifies work
affecting product conformity, shall be defined. This applies in particular to personnel that needs to initiate
actions preventing product non-conformities from occurring, actions in case of non-conformities and to identify
and register product conformity problems. Personnel performing work affecting product conformity shall be
competent on the basis of appropriate education, training, skills and experience for which records shall be
maintained.
8.3.2.3 Equipment
Testing: all weighing, measuring and testing equipment shall be calibrated and regularly inspected according
to documented procedures, frequencies and criteria.
Manufacturing: all equipment used in the manufacturing process shall be regularly inspected and maintained
to ensure use, wear or failure does not cause inconsistency in the manufacturing process. Inspections and
maintenance shall be carried out and recorded in accordance with the manufacturer’s written procedures and
the records retained for the period defined in the manufacturer's FPC procedures.
8.3.2.4 Raw materials and components
The specification of all incoming raw materials and components shall be documented, as shall the inspection
scheme for ensuring their conformity. In case supplied kit components are used, the attestation of conformity
level of the component shall be that given in the appropriate harmonised technical specification for that
component.
8.3.2.5 Design process
The factory production control system shall document the various stages in the design of the valve, identify
the checking procedure and those individuals responsible for all stages of design.
During the design process itself a record shall be kept of all checks, their results and any corrective actions
taken. This record shall be sufficiently detailed and accurate to demonstrate that all stages of the design
stage, and all checks have been carried out satisfactorily.
8.3.2.6 Product testing and evaluation
The manufacturer shall establish procedures to ensure that the stated values of the characteristics he
declares, are maintained.
8.3.2.7 Non-conforming products
The manufacturer shall have written procedures which specify how non-conforming products shall be dealt
with. Any such events shall be recorded as they occur and these records shall be kept for the period defined
in the manufacturer’s written procedures.
8.3.2.8 Corrective action
The manufacturer shall have documented procedures that instigate action to eliminate the cause of
non-conformities in order to prevent recurrence.
8.3.2.9 Handling, storage and packaging
The manufacturer shall have procedures providing methods of packaging and of product handling and shall
provide suitable storage areas preventing damage or deterioration.
8.3.3 Product specific requirements
The FPC system shall:
 address this European Standard;
 ensure that the products placed on the market comply with the stated performance characteristics.
The FPC shall include a product specific FPC which identify procedures to demonstrate compliance of the
product at appropriate stages, i.e.:
a) the controls and tests to be carried out prior to and/or during manufacturing according to a frequency laid
down in the FPC test plan, and/or
b) the verifications and tests to be carried out on finished products according to a frequency laid down in the
FPC test plan.
If the manufacturer uses only finished products, the operation under b) shall lead to an equivalent level of
compliance of the product as if FPC had been carried out during the production.
If the manufacturer carries out parts of the production himself, the operation under b) may be reduced and
partly replaced by operations under a). Generally, the more parts of the production that are carried out by the
manufacturer, the more operations under b) may be replaced by operations under a). In any case the
operation shall lead to an equivalent level of compliance of the products as if FPC had been carried out during
the production.
NOTE Depending on the specific case, it can be necessary to carry out the operations referred to under a) and b),
only operations under a) or only those under b).
The operations under a) centre as much on the intermediate states of the product as on manufacturing
machines and their adjustment, and measuring equipment etc. These controls and tests and their frequency
shall be chosen based on product type and composition, the manufacturing process and its complexity, the
sensitivity of product features to variations in manufacturing parameters etc.
The manufacturer shall establish and maintain records that provide evidence that the production has been
sampled and tested. These records shall show clearly whether the production has satisfied the defined
acceptance criteria and shall be available for at least three years. These records shall be available for
inspection by the Notified Body.
Where the product fails to satisfy the acceptance measures, the provisions for non-conforming products shall
apply, the necessary corrective action shall immediately be taken and the products or batches not conforming
shall be isolated and properly identified. Once the fault has been corrected, the test or verification in question
shall be repeated.
The results of controls and tests shall be properly recorded. The product description, date of manufacture, test
method adopted, test results and acceptance criteria shall be entered in the records under the signature of the
person responsible for the control/test. With regard to any control result not meeting the requirements of this
European Standard, the corrective measures taken to rectify the situation (e.g. a further test carried out,
modification of manufacturing process, throwing away or putting right of product) shall be indicated in the
records.
Individual products or batches of products and the related manufacturing documentation shall be completely
identifiable and retraceable.
8.3.4 Initial inspection of factory and FPC
Where relevant according to the applicable attestation of conformity system, the initial inspection of FPC shall
be carried out when the production process has been finalised and in operation. The factory and FPC
documentation shall be assessed to verify that the requirements of 8.3.2 and 8.3.3 are fulfilled.
In the assessment it shall be verified:
a) that all resources necessary for the achievement of the product characteristics required by this European
Standard, and
b) that the FPC-procedures in accordance with the FPC documentation are followed in practice, and
c) that the product complies with the initial type testing samples, for which compliance with this European
Standard has been verified.
All locations where final assembly or at least final testing of the relevant product is performed, shall be
assessed to verify that the above conditions a) to c) are in place and implemented.
If the FPC system covers more than one product, production line or production process, and it is verified that
the general requirements are fulfilled when assessing one product, production line or production process, then
the assessment of the general requirements does not need to be repeated when assessing the FPC for
another product, production line or production process.
All assessments and their results shall be documented in a report.
8.3.5 Surveillance of FPC
Surveillance of the FPC shall be undertaken once a year.
The surveillance of the FPC shall include a review of the FPC test plan(s) and production processes(s) for
each pr
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