Industrial valves - Valves for chemical and petrochemical process industry - Requirements and tests

This document applies to valves of DN 15 and larger, made of metallic materials for chemical and petrochemical plants. It contains additional requirements to those contained in the relevant European product standards (e.g. EN 593, EN 1349) and EN 16668.
The use of design codes or technical rules other than described by European product standards are subject to agreement with the purchaser.
Process control devices and safety accessories are not subject of this document.

Industriearmaturen - Armaturen für die chemische und petrochemische Verfahrensindustrie - Anforderungen und Prüfungen

Dieses Dokument ist anzuwenden für Armaturen ab DN 15 aus metallischen Werkstoffen für chemische und petrochemische Anlagen. Es enthält zusätzliche Anforderungen zu denen, die in den entsprechenden europäischen Produktnormen (z. B. EN 593, EN 1349) und EN 16668 enthaltenen sind.
Die Anwendung anderer Konstruktionsrichtlinien oder technischer Regeln als jenen, die in den europäischen Produktnormen beschrieben sind, ist mit dem Besteller zu vereinbaren.
PLT-Geräte und Ausrüstungsteile mit Sicherheitsfunktion sind nicht Gegenstand dieses Dokuments.

Robinetterie industrielle - Appareils de robinetterie destinés aux procédés de l'industrie chimique et pétrochimique - Prescriptions et essais

Le présent document s'applique aux appareils de robinetterie métalliques de DN 15 et plus, destinés aux usines chimiques et pétrochimiques. Il contient des prescriptions supplémentaires à celles fournies par les Normes européennes de produits pertinentes (par exemple l'EN 593, l'EN 1349) et l'EN 16668.
L'utilisation de codes de conception ou de règles techniques autres que ceux décrits par les normes européennes de produits est soumise à un accord avec l'acheteur.
Les dispositifs de régulation de processus et les accessoires de sécurité ne relèvent pas du domaine d'application du présent document.

Industrijski ventili - Ventili za kemično in petrokemično procesno industrijo - Zahteve in preskusi

General Information

Status
Published
Public Enquiry End Date
09-Nov-2019
Publication Date
11-Nov-2020
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
29-Oct-2020
Due Date
03-Jan-2021
Completion Date
12-Nov-2020

RELATIONS

Buy Standard

Standard
SIST EN 12569:2020
English language
23 pages
sale 10% off
Preview
sale 10% off
Preview

e-Library read for
1 day

Standards Content (sample)

SLOVENSKI STANDARD
SIST EN 12569:2020
01-december-2020
Nadomešča:
SIST EN 12569:2000
SIST EN 12569:2000/AC:2000
SIST EN 12569:2000/AC:2001
Industrijski ventili - Ventili za kemično in petrokemično procesno industrijo -
Zahteve in preskusi
Industrial valves - Valves for chemical and petrochemical process industry -
Requirements and tests
Industriearmaturen - Armaturen für die chemische und petrochemische
Verfahrensindustrie - Anforderungen und Prüfungen

Robinetterie industrielle - Appareils de robinetterie destinés aux procédés de l'industrie

chimique et pétrochimique - Prescriptions et essais
Ta slovenski standard je istoveten z: EN 12569:2020
ICS:
23.060.01 Ventili na splošno Valves in general
SIST EN 12569:2020 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 12569:2020
---------------------- Page: 2 ----------------------
SIST EN 12569:2020
EN 12569
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2020
EUROPÄISCHE NORM
ICS 23.060.01 Supersedes EN 12569:1999
English Version
Industrial valves - Valves for chemical and petrochemical
process industry - Requirements and tests

Robinetterie industrielle - Appareils de robinetterie Industriearmaturen - Armaturen für die chemische und

destinés aux procédés de l'industrie chimique et petrochemische Verfahrensindustrie - Anforderungen

pétrochimique - Prescriptions et essais und Prüfungen
This European Standard was approved by CEN on 14 September 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 12569:2020 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN 12569:2020
EN 12569:2020 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

Introduction .................................................................................................................................................................... 4

1 Scope .................................................................................................................................................................... 5

2 Normative references .................................................................................................................................... 5

3 Terms, definitions and symbols ................................................................................................................. 6

3.1 Terms and definitions ................................................................................................................................... 6

3.2 Symbols ............................................................................................................................................................... 7

4 Category of valves ........................................................................................................................................... 7

5 Requirements ................................................................................................................................................... 7

5.1 Design .................................................................................................................................................................. 7

5.1.1 General ................................................................................................................................................................ 7

5.1.2 Shell design strength ...................................................................................................................................... 9

5.1.3 Protection against exceeding the allowable limits ............................................................................. 9

5.1.4 Connection to the drive ................................................................................................................................. 9

5.1.5 Additional requirements for butterfly valves, ball and plug valves .......................................... 10

5.1.6 Strength of valve stem and shaft ............................................................................................................. 10

5.1.7 Anti-blow out design ................................................................................................................................... 10

5.2 Materials .......................................................................................................................................................... 11

5.2.1 General ............................................................................................................................................................. 11

5.2.2 Spheroidal graphite cast iron to EN 1563 ........................................................................................... 11

5.2.3 Spheroidal graphite cast iron to EN 1563, 5.3103 and 5.3104 .................................................... 12

5.2.4 Cast steel .......................................................................................................................................................... 12

5.3 Manufacturing ............................................................................................................................................... 12

5.3.1 Welding ............................................................................................................................................................ 12

5.3.2 Supply chain ................................................................................................................................................... 12

5.4 Non-destructive testing (NDT) ................................................................................................................ 12

5.5 Final assessment .......................................................................................................................................... 12

5.6 Marking ............................................................................................................................................................ 13

5.7 Surface and coating ..................................................................................................................................... 14

5.7.1 Surface finish ................................................................................................................................................. 14

5.7.2 Flange facing surfaces ................................................................................................................................. 15

5.8 Condition as delivered ............................................................................................................................... 15

5.9 Documentation .............................................................................................................................................. 15

Annex A (normative) Supplementary possible steel grades for fasteners ........................................... 16

Annex B (normative) Threaded holes for pneumatic connections ......................................................... 18

Annex C (informative) Basic configuration of the valve interface from part-turn actuator to

the valve with a bracket ............................................................................................................................. 20

Bibliography ................................................................................................................................................................. 23

---------------------- Page: 4 ----------------------
SIST EN 12569:2020
EN 12569:2020 (E)
European foreword

This document (EN 12569:2020) 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 April 2021, and conflicting national standards shall be

withdrawn at the latest by April 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 12569:1999 and EN 12569:1999/AC:2000.
The main technical changes compared to the previous edition are the following:
— Clause 2 on normative references has been updated;
— Clause 3 for terms, definitions and symbols has been added;
— Clause 5 on the applicable requirements has been completely re-written;

— normative Annex A on supplementary possible steel grades for fasteners and normative Annex B for

threaded holes for pneumatic connections have been added;

— informative Annex C giving basic configuration of the valve interface from actuator to the valve with

a bracket has been added.

According to the CEN-CENELEC Internal Regulations, the national standards organisations 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.
---------------------- Page: 5 ----------------------
SIST EN 12569:2020
EN 12569:2020 (E)
Introduction

This document is based on the experience of the chemical and petrochemical industry and provides

additional requirements to those given in EN 16668 and valve product standards.

It is assumed that the essential safety requirements of the European legislation for pressure equipment

(satisfied by European product standards) and safety requirements from EN 16668 and other standards

are satisfied.
---------------------- Page: 6 ----------------------
SIST EN 12569:2020
EN 12569:2020 (E)
1 Scope

This document applies to valves of DN 15 and larger, made of metallic materials for chemical and

petrochemical plants. It contains additional requirements to those contained in the relevant European

product standards (e.g. EN 593, EN 1349) and EN 16668.

The use of design codes or technical rules other than described by European product standards is subject

to agreement with the purchaser.
Process control devices and safety accessories are not subject of this document.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements 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 736-2:2016, Valves — Terminology — Part 2: Definition of components of valves
EN 736-3:2008, Valves — Terminology — Part 3: Definition of terms

EN 1092-1, Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, PN

designated — Part 1: Steel flanges
EN 1267, Industrial valves — Test of flow resistance using water as test fluid
EN 1349, Industrial process control valves

EN 1515-4, Flanges and their joints — Bolting — Part 4: Selection of bolting for equipment subject to the

Pressure Equipment Directive 97/23/EC
EN 1563, Founding — Spheroidal graphite cast irons

EN 1759 (all parts), Flanges and their joint — Circular flanges for pipes, valves, fittings and accessories,

Class designated
EN 10204, Metallic products — Types of inspection documents

EN 10269, Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties

EN 12266-1:2012, Industrial valves — Testing of metallic valves — Part 1: Pressure tests, test procedures

and acceptance criteria — Mandatory requirements

EN 12266-2:2012, Industrial valves — Testing of metallic valves — Part 2: Tests, test procedures and

acceptance criteria – Supplementary requirements

EN 12351, Industrial valves — Protective caps for valves with flanged connections

EN 12570, Industrial valves — Method for sizing the operating element

EN 15081, Industrial valves — Mounting kits for part-turn valve actuator attachment

---------------------- Page: 7 ----------------------
SIST EN 12569:2020
EN 12569:2020 (E)

EN 16668:2016+A1:2018, Industrial valves — Requirements and testing for metallic valves as pressure

accessories

EN 60534-4:2006, Industrial-process control valves — Part 4: Inspection and routine testing

EN ISO 1179-1, Connections for general use and fluid power — Ports and stud ends with ISO 228-1 threads

with elastomeric or metal-to-metal sealing — Part 1: Threaded ports (ISO 1179-1)

EN ISO 5210, Industrial valves — Multi-turn valve actuator attachments (ISO 5210)

EN ISO 5211:2017, Industrial valves — Part-turn actuator attachments (ISO 5211:2017)

EN ISO 15848-1:2015, Industrial valves — Measurement, test and qualification procedures for fugitive

emissions – Part 1: Classification system and qualification procedures for type testing of valves (ISO 15848-

1:2015)
3 Terms, definitions and symbols
3.1 Terms and definitions

For the purposes of this document, the terms and definitions given in EN 736-2, EN 736-3, EN 1267,

EN 16668 and the following apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1.1
shell tapping
threaded hole in the wall of the shell
[SOURCE: EN 736-2:2016, 3.1.1.23]
3.1.2
fugitive emission

chemical or mixture of chemicals, in any physical form, which represents an unanticipated or spurious

leak from equipment on an industrial site
[SOURCE: EN ISO 15848-1:2015, 3.5]
3.1.3
sound engineering practice
SEP
design taking into account all relevant factors influencing safety
As impacted by amendment EN ISO 15848-1:2015/A1:2017.
---------------------- Page: 8 ----------------------
SIST EN 12569:2020
EN 12569:2020 (E)
3.1.4
anti-blow out design

valve design which ensures that, when the valve is under pressure, the shaft or stem cannot be fully blown

out of the shell by disassembly of any external part or by failure of the connection between obturator and

shaft or stem even when external parts (which are not included in the bare shaft valve, e.g. bracket, lever,

actuator) are removed

[SOURCE: EN 736-3:2008, 3.3.7, modified – Note and indents have been incorporated into the sentence]

3.2 Symbols
Symbols and units are given in Table 1.
Table 1 — Symbols and units
Symbol Denomination Unit
ρ Liner density g/cm
4 Category of valves

Classification of valves shall be carried out as stated in EN 16668. Unless otherwise agreed, valves shall

always be classified for gaseous fluids of Fluid Group 1 (to ensure universal use of the components).

Valves like condensate traps and pressure controllers that are used exclusively for steam and steam

condensate service shall be classified in Fluid Group 2.
If the result of the categorization is not category I, II or III, SEP applies.
5 Requirements
5.1 Design
5.1.1 General

5.1.1.1 For threaded holes for pneumatic connections, all threads shall be G-threads, see Annex B.

5.1.1.2 The individual parts of the components shall be manufactured in such a way as to ensure their

interchangeability for components of the same make, same type, same design status and the same

nominal size.

5.1.1.3 The fatigue life depending on the maximum stress range to which a bellow is exposed during

the entire service life shall be specified in the bellow documentation being considered as integrated part

of the valve manufacturer documentation.

Flooded bellows in manually operated valves up to PN 40 for process application shall be designed for

20 000 full strokes (10 000 cycles , i.e. motions of the valve obturator moving from fully closed position

to fully opened position, and returning to fully closed position) at least. As an option, at least 5 000 full

strokes are subject to agreement.

Flooded bellows in manually operated valves higher than PN 40 for process application shall be designed

for 2 500 full strokes at least.

As subject to agreement, the performance of the bellows may be qualified by a type test in accordance

with EN ISO 15848-1 with its numbers of mechanical cycles for a defined level of the valve (to which the

---------------------- Page: 9 ----------------------
SIST EN 12569:2020
EN 12569:2020 (E)

bellow is fitted). All other stem (or shaft) seal systems may be considered equivalent if they meet the

requirements in accordance with EN ISO 15848-1.

5.1.1.4 Spindle seals (e.g. bellows and diaphragms) which are designed for increased tightness

requirements (e.g. to avoid fugitive emissions into the atmosphere) and are considered as primary seals

shall, unless otherwise agreed, be provided with a secondary seal in the event of unforeseen damage to

the primary seal.

5.1.1.5 Concerning the sizing of the operating element, the following shall apply in the absence of

requirements.

For any manual operation of valves, the minimum size of the operating element shall be in accordance

with EN 12570. The size of the operating element shall be selected such that the valve can be operated:

a) when the allowable differential pressure is equal to the maximum allowable pressure, and

b) taking into account the effect of hydrodynamic torque due to flow velocity.

When specified by the customer, it is allowed to size an actuator based on a reduced differential pressure

taking into account the effect of the hydraulic torque.
The actual differential pressure shall be marked on the valve.
5.1.1.6 Concerning flow characteristics Table 2 shall apply.
NOTE 1 Flow velocity is a design parameter to be considered for valves.

NOTE 2 The flow velocity is the quotient of the volumetric flow rate (expressed in m /s) and the area calculated

using the diameter (expressed in m) having a value equal to the number of the DN divided by 1 000.

Table 2 — Flow velocity
PS Maximum flow velocity
bar m/s
Liquids with a density of Gas (at density 1,293 kg/m at
a a
1 000 kg/m 273 °K and 1 bar)
Up to 6 2,5 25
6 < PS ≤ 10 3 30
10 < PS ≤ 16 4 35
PS > 16 5 40

In case of other physical properties of fluids, the values are adapted to the specific weight of the

fluid.

5.1.1.7 The face-to-face lengths of valves shall conform to EN 558, unless agreed otherwise.

5.1.1.8 On all components where an electrically conductive connection to the piping line cannot be

ensured for installation-specific reasons (e.g. wafer-style valves), suitable engineering measures (e.g. a

pocket hole with internal threading in the shell) shall be provided to ensure proper discharge of any

developing electrostatic charges to the piping line.
Durable protection against electrostatic charging shall be ensured.
---------------------- Page: 10 ----------------------
SIST EN 12569:2020
EN 12569:2020 (E)

The discharge resistance between any part of the component (including attachments) and the piping line

shall be affirmed < 10 Ω for metallic components and < 10 Ω for plastic-lined metallic components.

In oil and grease-free design, special cleanliness requirements shall be a separate subject to agreement.

5.1.1.9 For valves classified in SEP, the relevant requirements of this document shall be considered

in addition.

5.1.1.10 All screwed connections, e.g. body/cover connections or screwed in parts of valves, shall be

properly secured (e.g. by mechanical / contact friction or locking) against accidental loosening.

Screwed body/cover connections that rely on the thread to seal are not acceptable.

5.1.1.11 The valve shall be designed so that the risk of media induced crevice corrosion is avoided.

5.1.1.12 Gaskets of the shell shall be radially retained against the pressure. In case of body bonnet

joints up to and including PN 25 (or Class 150) valves, it is not mandatory.

Spiral wound gaskets sealing the body/cover connection shall be fully retained or provided with outer

and inner guide rings.

The sealing face of spiral wound gaskets and metallic ring-joint gaskets shall not be interrupted by bolts,

rings, etc.
5.1.1.13 Flange bolting shall not be used to compensate pipe stresses.

5.1.1.14 The design of the valve shall allow, with or without an intermediate part, mounting of a

pneumatic, hydraulic or electric actuator complying with EN ISO 5210 (multi-turn valve actuators) or

EN ISO 5211 (part-turn actuators).

5.1.1.15 Manually operated valves shall normally be closed by turning the handwheel or lever in a

clockwise direction when facing the handwheel or lever.

If anti-clockwise closing is ordered, this shall be specified and marked on the operating element.

5.1.2 Shell design strength

The requirements in accordance with EN 16668 and existing product standards shall be fulfilled.

Isolating valves and control valves shall have no shell tapping, unless otherwise specified.

5.1.3 Protection against exceeding the allowable limits

The requirements in accordance with EN 16668:2016+A1:2018, 5.1.3 and existing product standards

shall be fulfilled.
5.1.4 Connection to the drive

Where a connecting flange is specified for actuators as per EN ISO 5210 or EN ISO 5211, the design and

type of execution shall be agreed between the manufacturer and the purchaser.

The connection between the valve body and the gearbox or actuator shall be vented such that any product

leakage from the stem or shaft cannot penetrate into the gearbox or actuator housing.

Mounting of pneumatic part-turn actuators on valves shall be done in accordance with EN 15081. The

preferred design is mentioned in Annex C.
---------------------- Page: 11 ----------------------
SIST EN 12569:2020
EN 12569:2020 (E)
5.1.5 Additional requirements for butterfly valves, ball and plug valves
5.1.5.1 Ease of recognition of valve position

On butterfly valves, ball and plug valves, the position of the hand lever or indicating means shall

unequivocally indicate the valve open and closed positions. The design of the indicating means shall be

such that its components cannot be assembled to falsely indicate the valve open or closed position. When

the valve is open, the lever shall point in the direction of the piping line; when the valve is closed, it shall

point in the direction normal to the piping line. Any other arrangement of the manual lever or indicating

means shall be reliably ruled out.

The position of the valve in the installed condition shall also be clearly recognizable when the manual

lever or mechanical actuator (manual gearbox, pneumatic or electrical actuator) has been removed. The

same shall apply to the position indication of multi-way valves and their stem extensions.

On isolating valves, the removal of the hand lever or the external actuator is prohibited under pressurized

service conditions. A corresponding caution note shall be included in the operating manual.

The shaft and actuator shall indicate the same position of the sealing element, regardless of the

accessories used (e.g. stem extension).

After assembly, the position of actuators and gearboxes relative to the valve shall be physically marked

in order to avoid incorrect re-assembly during maintenance.
5.1.5.2 Dead space venting in ball and plug valves

Where dead space venting is specified, the type of execution shall be agreed between the manufacturer

and the purchaser.
5.1.6 Strength of valve stem and shaft

The weakest point of the valve stem or shaft shall always be located outside the pressure-bearing valve

body.

The following data, expressed in Nm, shall be indicated by the valve manufacturer for actuator sizing:

a) breakaway torque (for opening and closing);

b) maximum allowable torque of shaft or stem load at room temperature and maximum operating

pressure in the absence of requirements.
The following criteria shall be observed for valves with a shaft:

— for isolating valves, the nominal pressure shall be taken as the differential pressure;

— dry (unlubricated);
— prolonged duration of non-operation.
These data shall be submitted to the purchaser on request.
5.1.7 Anti-blow out design
The valve shall be of anti-blow out design (see EN 736-3).

A stem or shaft shall be deemed to be blowout-proof if the valve design is such that the stem or shaft

cannot be completely forced out of the pressure-bearing body while the valve is under pressure when an

external component such as a manual lever, ratchet plate, stuffing box gland or mechanical actuator is

removed.
---------------------- Page: 12 ----------------------
SIST EN 12569:2020
EN 12569:2020 (E)
5.2 Materials
5.2.1 General

5.2.1.1 The requirements in accordance with EN 16668:2016+A1:2018, 5.2 shall be fulfilled. When

selecting materials, EN 16668:2016+A1:2018, 5.2 shall be applied.

5.2.1.2 The shell design strength testing shall be carried out in accordance with

EN 16668:2016+A1:2018, 5.1.2, b), c), d) as applicable. For shell design for valves, classified in SEP,

EN 16668:2016+A1:2018, 5.1.2, a) may also be applied.

5.2.1.3 The components shall be free from asbestos. The valve components shall be free from non-

ferrous metals, unless agreed otherwise.

5.2.1.4 When selecting materials for bolts and nuts, EN 16668:2016+A1:2018, 5.2.6 shall be applied.

Supplementary to other possible steels are listed in Annex A.

The bolts and nuts for the shell connections shall at least exhibit the same corrosion properties as the

shell material.

EXAMPLE Where component shells are fabricated from 1.4401, 1.4404, 1.4408, 1.4571 or 1.4581 bolts and

nuts shall be made of stainless steel.

5.2.1.5 For plastic-lined components where fastener (screws, bolts, nuts) are used for connecting the

shell these fasteners shall be made of austenitic material.

For plastic-lined components, Fluorethylenpropylen (FEP), Perfluoroalkoxy (PFA) or

Polytetrafluorethylen (PTFE)-lined valves shall have a minimum lining thickness of not less than 2,5 mm

in the fluid-contacted areas. The purchaser shall be notified of any non-compliance with the minimum

lining thickness for reasons inherent in the design or measurement method. Density for recommended

liner materials are shown in Table 3. Other lining, liner density and liner minimum thickness

(permeability behaviour might require higher thickness e.g. 3 mm) shall be subject to agreement.

Table 3 — Liner density
Lining Liner density
Minimum thickness
g/cm
FEP 2,13 2,5
PFA 2,14 2,5
PTFE 2,16 2,5
As in ISO 19240:2017, 5.4.
5.2.2 Spheroidal graphite cast iron to EN 1563

Spheroidal graphite cast iron according to EN 1563, e.g. 5.3106, 5.3200 and 5.3103, shall satisfy the

criteria for Quality Level 4. Conformance shall be demonstrated by the scope of testing defined in

EN 16668:2016+A1:2018, Annex E.
---------------------- Page: 13 ----------------------
SIST EN 12569:2020
EN 12569:2020 (E)
5.2.3 Spheroidal graphite cast iron to EN 1563, 5.3103 and 5.3104

Components fabricated from 5.3103 (equals EN-GJS-400-18-LT) and 5.3104 (equals EN-GJS-400-18-RT)

shall have a 90 % spheroidal graphite structure with a predominantly ferritic matrix structure containing

not more than 5 % pearlite.

Secondary iron carbide detectable in the micro-section at 200-fold magnification shall not be allowed.

The requirements for the impact energy at −20 °C for 5.3103 shall also apply for 5.3104 and be

demonstrated by a notch impact test per casting/heat treatment lot using one valve body from the last

moulding box or a test specimen cast integral with the body. The thickness of the integrally cast test

specimen should be equal to or greater than the flange thickness. All other tests may be performed in

accordance with EN 1563.

On small components not lending themselves to notch impact testing, the manufacturer may verify the

...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.