CEN/TC 69/WG 1 - Basic standards

This document defines the requirements for how mechanical compliant items in a final element can be evaluated according to the principles of EN 61508 to integrate them into a safety-related system. It provides a method to determine all relevant factors, associated with the product, and thereby meet the specific needs of users of the product.
The basic prerequisite for the application of this document is that the intended use is known. This document describes a system to minimize systematic faults to achieve the targeted Safety Integrity Level (SIL).
This document is applied to single compliant items (e.g. valve, actuator or mechanical portions of solenoid valves) or to assemblies of several of these compliant items and interconnecting compliant items and components (e.g. gears, adaptors, brackets, etc.). Electrical, electronic or programmable electronic components are assessed according to EN 61508.
This document does not apply to:
-   manually operated valves;
-   items in safety systems or risk-reducing devices that are not assessed and operated according to the principles of functional safety (e.g. automatic safety valves like pressure relief valves).
The methods described can also be used for other mechanical compliant items in a final element of the safety-related system if the applicability is confirmed by appropriate expert knowledge (e.g. dampers, brakes, clutches).

This document specifies the requirements for marking of industrial metallic valves. It defines the method of applying the markings, on the body, on a flange, on an identification plate or any other location.
When specified as a normative reference in a valve product or performance standard, this document is considered in conjunction with the specified requirements of that valve product or performance standard.
The marking requirements for plastic valves are not within the scope of this document.

This document specifies the requirements for the attachment of multi-turn actuators to valves.
Throughout this document, “actuator” can be understood as “actuator and/or gearbox” providing a multi-turn and/or linear output.
It specifies:
—     flange dimensions necessary for the attachment of actuators to industrial valves [see Figure 1 a)] or to intermediate supports [see Figure 1 b)];
—     those driving component dimensions of actuators which are necessary to attach them to the driven components;
—     reference values for torque and thrust for flanges having the dimensions specified in this document.

This document provides basic requirements for piston type pneumatic linear actuators for industrial valve, both double acting and single acting, used for on-off and modulating control duties.
It includes criteria, method and guidelines for design, qualification, corrosion protection, control and testing.
It does not apply to diaphragm actuators and to pneumatic actuators which are integral parts of control valves.
Other requirements, or conditions of use, different from those indicated in this document, are subject to agreement, between the purchaser and the manufacturer/supplier, prior to order.

This document specifies fire type-testing requirements and a fire type-test method for soft- and metal-seated isolation valves with one or more obturators. It is not applicable to the testing requirements for valve actuators other than manually operated gearboxes or similar mechanisms when these form part of the normal valve assembly. Other types of valve actuators (e.g. electrical, pneumatic or hydraulic) can need special protection to operate in the environment considered in this valve test, and the fire testing of such actuators is outside the scope of this document.
This document specifies the measurement and assessment criteria for:
a) through-seat leakage;
b) external leakage;
c) cavity overpressure relief of double-seated valves;
d) operability.
This document specifies the rules whereby the fire-type testing qualification for a valve can be extended to untested sizes, pressure ratings and materials of construction of the same basic design type.
Fire test reports of valves tested according to previous editions of this document are acceptable when submitted together with the full and compliant fire test report as per 6.7 of the edition under which it was tested. Any data missing as required from 6.7 within the fire test report are accepted or rejected at the purchaser’s discretion.
NOTE       For the purposes of this document, the terms “fire type-test” and “fire test” are synonymous.

This document specifies 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 and to pneumatic actuators designed for permanent immersion in fresh or sea water.
Other requirements, or conditions of use, different from those indicated in this document, are expected to be subject to negotiations, between the purchaser and the manufacturer/supplier, prior to order.

This document specifies basic requirements for piston type hydraulic linear actuators for industrial valve, both double acting and single acting, used for on-off and modulating control duties. It includes criteria, method and guidelines for design, qualification, corrosion protection, control and testing.
It does not apply to hydraulic actuators which are integral parts of control valves. Other requirements, or conditions of use, different from those indicated in this document, are expected to be subject to negotiations, between the purchaser and the manufacturer/supplier, prior to order.

This document specifies the “face-to-face” (FTF) and “centre-to-face” (CTF) dimensions for PN and Class designated metal valves used in flanged pipe systems.
This document covers valves with the following PN, Class and DN values:
—   PN 2,5; PN 6; PN 10; PN 16; PN 25; PN 40; PN 63; PN 100; PN 160; PN 250; PN 320; PN 400;
—   Class 125; Class 150; Class 250; Class 300; Class 600; Class 900; Class 1 500; Class 2 500;
—   DN 10; DN 15; DN 20; DN 25; DN 32; DN 40; DN 50; DN 65; DN 80; DN 100; DN 125; DN 150; DN 200; DN 250; DN 300; DN 350; DN 400; DN 450; DN 500; DN 600; DN 700; DN 750; DN 800; DN 900; DN 1 000; DN 1 050; DN 1 200; DN 1 400; DN 1 600; DN 1 800; DN 2 000.
For valves in other shell materials than metal the same FTF and CTF dimensions can be used.
For relationship between DN and NPS, see Annex B.

This European Standard specifies the method for the strength calculation of the shell with respect to internal pressure of the valve.

This document provides basic requirements for electric valve actuators, used for on-off and control valves. It includes guidelines for classification, design, enclosure and corrosion protection, and methods for conformity assessment.
Combinations of electric actuators and gearboxes when supplied by the actuator manufacturer are within the scope of this document.
This document does not cover solenoid actuators, electro-hydraulic actuators and electric actuators which are integral to the valves.
Other requirements or conditions of use different from those indicated in this document are agreed between the purchaser and the manufacturer/supplier, prior to order.

This document provides basic requirements for gearboxes to operate industrial valves for manual and automated on/off and modulating duties, this includes manual override gearboxes. It includes guidelines for classification, design and methods for conformity assessment.
It does not cover gear systems which are integral part in the design of valves and subsea gearboxes.
Other requirements or conditions of use different from those indicated in this document are agreed between the purchaser and the manufacturer or supplier (first party), prior to order.

This European Standard specifies the tabulation method for determining the wall thickness of valve bodies, bonnets and covers with essentially circular cross-section made in forged, cast or fabricated steel.
For valve shells with oval, rectangular or non-circular shapes, see 8.6.
The range of PN or Class designations for which thicknesses are tabulated is:
PN 2,5, PN 6, PN 10, PN 16, PN 25, PN 40, PN 63, PN 100, PN 160, PN 250, PN 320, PN 400, Class 150, Class 300,Class 600, Class 900, Class 1 500, Class 2 500, Class 4 500.
Pressure/temperature ratings are specified for each material group for the above PN Standard Class and Special Class designations.
The non-destructive examination procedures and acceptance levels that need to be applied to the valve shell components in order for the valve to be used at Special Class pressure/temperature ratings are defined.
Details are also given for the alternative rules for small bore valves of DN 65 and smaller designated as Limited Class.
This standard does not apply to threaded end valves:
- DN 80 or larger;
- or which have pressure ratings greater than Class 2 500;
- or which operate at temperatures greater than 540 °C.
Socket welding end valves DN 80 or larger are outside the scope of this standard.

This European Standard specifies the calculation method for valve shells manufactured in metallic materials other than steel. The loadings to be accounted for are in accordance with EN 12516-2.
Design methods are in accordance with EN 12516-2, design by formulae according to the relevant clauses.

This European standard applies to metallic valves as pressure accessories for industrial applications with a maximum allowable pressure PS greater than 0,5 bar in accordance with the Pressure Equipment Directive (PED) 97/23/EC and specifies minimum requirements applicable to design, manufacture, testing, materials and documentation.
All relevant essential safety requirements of the Pressure Equipment Directive (PED) 97/23/EC applicable to valves have been taken into consideration and are addressed in this standard.
This standard is not applicable to:
-   safety valve and bursting disc (a safety accessory),
-   sight glass with its frames (component of a pressure equipment) and
-   measurement chambers.
For other exclusions refer to the PED.

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

This European Standard specifies the dimensions of butt welding ends of steel valves DN 8 to DN 1 400 designed to be butt welded to standardized pipes.
NOTE   The outside diameters and wall thickness of standardized pipes are in accordance with ISO 4200.

ISO 15848-1:2015 specifies testing procedures for evaluation of external leakage of valve stem seals (or shaft) and body joints of isolating valves and control valves intended for application in volatile air pollutants and hazardous fluids. End connection joints, vacuum application, effects of corrosion, and radiation are excluded from this part of ISO 15848.
ISO 15848-1:2015 concerns classification system and qualification procedures for type testing of valves.

ISO 6553:2016 specifies mandatory and optional markings for automatic steam traps.

This European Standard specifies the dimensions of socket welding ends of steel valves designed to be socket welded to standardised pipes in the size range DN 6 to DN 65.

This European Standard specifies the names of components of valves and their definitions. It has the purpose to provide a uniform terminology for all components of valves.
This European Standard covers components common to more than one type of valve. Names of components and definitions specific to one type of valve will be found in the relevant product or performance standard.

ISO 15848-2:2015 specifies test procedures for the evaluation of external leakage of valve stems or shafts and body joints of isolating valves and control valves intended for application with volatile air pollutants and hazardous fluids.
End connection joints, vacuum application, effects of corrosion, and radiation are excluded from this part of ISO 15848.
The production acceptance test is intended for standard production valves where fugitive emissions standards are specified.

ISO 15848-1:2015 specifies testing procedures for evaluation of external leakage of valve stem seals (or shaft) and body joints of isolating valves and control valves intended for application in volatile air pollutants and hazardous fluids. End connection joints, vacuum application, effects of corrosion, and radiation are excluded from this part of ISO 15848.
ISO 15848-1:2015 concerns classification system and qualification procedures for type testing of valves.

his European Standard specifies the end-to-end and centre-to-end dimensions for valves with threaded ends with connecting dimensions in compliance with EN ISO 228 1 or EN 10226 1, used in PN and Class designated piping systems.
The range of PN is:
-   PN 10; PN 16; PN 25; PN 40; PN 63; PN 100; PN 160; PN 250; PN 320; PN 400.
The range of Class is:
-   Class 150, Class 300, Class 600, Class 900, Class 1 500, Class 2 500.
The range of nominal size is:
-   DN 4; DN 6; DN 8; DN 10; DN 15; DN 20; DN 25; DN 32; DN 40; DN 50; DN 65; DN 80; DN 100.
NOTE 1   See Annex C for the relationship between nominal size (DN) and nominal pipe size (NPS).
NOTE 2   Valves having screwed end profiles different from those specified in EN ISO 228 1 or EN 10226–1, may use the same dimensions than those specified in Table 1.

This European Standard specifies requirements for tests, test procedures and acceptance criteria for production testing of industrial valves made of metallic materials.
The specified tests may also be used as type tests or acceptance tests.
Safety devices are not covered by EN 12266-1.
When specified as a normative reference in a valve product or performance standard, this European Standard is to be considered in conjunction with given specific requirements of the valve product or performance standard. Where requirements in a product or performance standard differ from those given in this European Standard, the requirements of the product or performance standard apply.
NOTE   For testing of industrial valves of thermoplastic materials, ISO 9393-1 and ISO 9393-2 apply.

This European Standard specifies supplementary requirements for tests, test procedures and acceptance criteria of industrial valves made of metallic materials.
The specified tests may be used as type tests, production tests or acceptance tests. The application of these tests is specified in the appropriate product or performance standards.
When specified as a normative reference in a valve product or performance standard, this European Standard should be considered in conjunction with given specific requirements of the valve product or performance standard. Where requirements in a product or performance standard differ from those given in this European Standard, the requirements of the product or performance standard apply.
NOTE   For testing of industrial valves of thermoplastic materials, ISO 9393-1 and ISO 9393-2 apply.

This European Standard specifies a method for determining valve pressure loss coefficient and fluid flow coefficient using water as test fluid. This method is suitable
for valves with low zeta values but higher than 0,1 by determining pressure loss, with respect to fluid flow rate and specific gravity, and
for valves with equal inlet and outlet nominal size.
Industrial process control valves are excluded from this European Standard.
NOTE 1   For zeta values above 6, the pressure loss coefficient inaccuracy is higher than the pressure loss caused by the test tubes. It becomes the same configuration of tests as in EN 60534-2-3.
NOTE 2   If using air as test fluid, other standards e.g. EN 60534-2-3 and ISO 6358 should be referred to.

This document defines specific terms and definitions used for industrial valve actuators not included in EN 736-2 and EN 736-3.

This document provides basic requirements for hydraulic 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 hydraulic actuators that are integral parts of control valves or to electro-hydraulic
actuators.
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.
The terms and definitions applicable to this European Standard are given in FprEN 15714-1.

This European Standard specifies the end to end and centre to end dimensions for steel butt welding end valves with connecting dimensions of welding ends in compliance with EN 12627, used in PN and Class designated piping systems.
The range of PN is:
-   PN 10; PN 16; PN 25; PN 40; PN 63; PN 100; PN 160; PN 250; PN 320; PN 400.
The range of Class is:
-   Class 150, Class 300, Class 600, Class 900, Class 1 500, Class 2 500.
The range of nominal size is:
-   DN 8; DN 10; DN 15; DN 20; DN 25; DN 32; DN 40; DN 50; DN 65; DN 80; DN 100; DN 125; DN 150; DN 200; DN 250; DN 300; DN 350; DN 400; DN 450; DN 500; DN 600; DN 700; DN 750; DN 800; DN 900, DN 1 000; DN 1 200.
NOTE 1   DN 750 is not applicable to PN designated valves.
NOTE 2   See Annex B for the relationship between nominal size (DN) and nominal pipe size (NPS).
NOTE 3   Valves having welding end profiles different from those specified in EN 12627, may use the same dimensions than those specified in Table 1.

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.

This European Standard provides requirements for metallic mounting kits for part-turn on-off valves and actuator attachments to enable safe and reliable operation.
It includes all components transmitting torques from actuators to valves with a maximum flange torque up to 16 000 Nm (up to F30 flange type).
It applies to part-turn valves and actuators having attachment flanges and drive components as described in EN ISO 5211.
It includes recommendations and methods for design and environmental corrosion protection.
When reference is made to this European Standard, all the requirements apply, unless otherwise agreed between the purchaser and the manufacturer/supplier, prior to order.
For the scope of this European Standard, the term “Valve” covers valve or shaft extension top-flange.

TC - Replacement of Annex ZA

This standard specifies requirements for an experimental method, to prove by type test that the design of shells and their body ends, made in cast iron, steel or copper alloy materials, possess the required pressure containing capability, with an adequate margin of safety. This standard is not applicable to valves designed on the basis of time dependent strength values. e.g. pulsating pressure applications and/or creep range temperatures.

This EN specifies the requirements for establishing the minimum size of the operating element supplied with an industrial valve regarding the force applied by one person to operate the valve under specified working conditions. This standard applies to manual operating elements of sizes from 100 mm to 1000 mm: - directly mounted on valves; - mounted on valve reduction gearboxes; - used for manual operation of power actuated valves. This standard does not apply to: - impactor handwheels; - T-keys; - chainwheels.

This document specifies basic requirements for hydraulic 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 hydraulic actuators which are integral parts of control valves and to hydraulic actuators designed for permanent immersion in fresh or sea water as well as electro-hydraulic actuators.
Other requirements, or conditions of use, different from those indicated in this document can vary upon request.

This document is applicable to metallic valves as pressure accessories for industrial applications with a maximum allowable pressure PS greater than 0,5 bar in accordance with the European legislation for pressure equipment and specifies requirements applicable to design, manufacture, testing, materials and documentation.
All essential safety requirements of the European legislation for pressure equipment applicable to valves have been taken into consideration and are addressed in this document.
This document does not apply to:
-   safety valve and bursting disc (safety accessories),
-   sight glass with its frames (component of a pressure equipment), and
-   measurement chambers.
For other exclusions, refer to the European legislation for pressure equipment [60].

This document provides requirements for metallic mounting kits for part-turn valves and actuator attachments.
It includes all components transmitting torques from actuators to valves with a maximum flange torque up to 16 000 Nm (up to F30 flange type).
It applies to mounting kits for part-turn valves and actuators with integral attachment flanges and drive components as described in ISO 5211, when direct mounting of the actuator on valve is not practical.
Stacking of mounting kits/intermediate supports is not within the scope of this document.
This document specifies methods for design and environmental corrosion protection.
When a reference is made to this document, all the requirements apply, unless otherwise agreed between the purchaser and the manufacturer/supplier, prior to order.
In this document, the term "valve" covers valve or shaft extension top-flange, and the term “actuator” covers part-turn actuator or combination of multi-turn actuator and gearbox.
Control valves are excluded from this document.

This European Standard specifies the method for the strength calculation of the shell with respect to internal pressure of the valve.

This European Standard defines the minimum performance requirements which apply to industrial valves. It specifies test procedures and acceptance criteria for each performance requirement of this European standard.
Valves for specific use, where such a performance requirements already exists are excluded from this standard:
a)   valves to be used in water supply pipe system in accordance with EN 1074 (all parts);
b)   valves to be used in gas distribution system with pressure lower than 16 bar in accordance with EN 13774;
c)   control valves in accordance with EN 1349;
d)   safety devices in accordance with EN ISO 4126 (all parts).

This European Standard specifies the tabulation method for determining the wall thickness of valve bodies, bonnets and covers with essentially circular cross-section made in forged, cast or fabricated steel.
For valve shells with oval, rectangular or non-circular shapes, see 8.6.
The range of PN or Class designations for which thicknesses are tabulated is:
PN 2,5, PN 6, PN 10, PN 16, PN 25, PN 40, PN 63, PN 100, PN 160, PN 250, PN 320, PN 400, Class 150, Class 300,Class 600, Class 900, Class 1 500, Class 2 500, Class 4 500.
Pressure/temperature ratings are specified for each material group for the above PN Standard Class and Special Class designations.
The non-destructive examination procedures and acceptance levels that need to be applied to the valve shell components in order for the valve to be used at Special Class pressure/temperature ratings are defined.
Details are also given for the alternative rules for small bore valves of DN 65 and smaller designated as Limited Class.
This standard does not apply to threaded end valves:
-   DN 80 or larger;
-   or which have pressure ratings greater than Class 2 500;
-   or which operate at temperatures greater than 540 °C.
Socket welding end valves DN 80 or larger are outside the scope of this standard.

This European standard applies to metallic valves as pressure accessories for industrial applications with a maximum allowable pressure PS greater than 0,5 bar in accordance with the Pressure Equipment Directive (PED) 97/23/EC and specifies minimum requirements applicable to design, manufacture, testing, materials and documentation.
All relevant essential safety requirements of the Pressure Equipment Directive (PED) 97/23/EC applicable to valves have been taken into consideration and are addressed in this standard.
This standard is not applicable to:
-   safety valve and bursting disc (a safety accessory),
-   sight glass with its frames (component of a pressure equipment) and
-   measurement chambers.
For other exclusions refer to the PED.

This European Standard specifies the calculation method for valve shells manufactured in metallic materials other than steel. The loadings to be accounted for are in accordance with EN 12516-2. Design methods are in accordance with EN 12516-2, design by formulae according to the relevant clauses.

This European Standard specifies the requirements for marking of industrial metallic valves. It defines the method of applying the markings, on the body, on a flange, on an identification plate or any other location.
When specified as a normative reference in a valve product or performance standard, this European Standard has to be considered in conjunction with the specified requirements of that valve product or performance standard.
The marking requirements for plastic valves are not within the scope of this European Standard.

ISO 5210:2017 specifies the requirements for the attachment of multi-turn actuators to valves.
Throughout this document, "actuator" may be understood as "actuator and/or gearbox" providing a multi-turn and/or linear output.
ISO 5210:2017  specifies:
-      flange dimensions necessary for the attachment of actuators to industrial valves [see Figure 1 a)] or to intermediate supports [see Figure 1 b)];
-      those driving component dimensions of actuators which are necessary to attach them to the driven components;
-      reference values for torque and thrust for flanges having the dimensions specified in this document.

ISO 5211:2017 specifies requirements for the attachment of part-turn actuators, with or without gearboxes, to industrial valves.
The attachment of part-turn actuators to control valves in accordance with the requirements of this document is subject to an agreement between the supplier and the purchaser.
ISO 5211:2017 specifies:
-      flange dimensions necessary for the attachment of part-turn actuators to industrial valves [see Figures 1 a) and 1 c)] or to intermediate supports [see Figures 1 b) and 1 d)];
-      driving component dimensions of part-turn actuators necessary to attach them to the driven components;
-      reference values for torques for interfaces and for couplings having the dimensions specified in this document.
The attachment of the intermediate support to the valve is out of the scope of this document.

ISO 10497:2010 specifies fire type-testing requirements and a fire type-test method for confirming the pressure-containing capability of a valve under pressure during and after the fire test. It is not applicable to the testing requirements for valve actuators other than manually operated gear boxes or similar mechanisms when these form part of the normal valve assembly. Other types of valve actuators (e.g. electrical, pneumatic or hydraulic) can need special protection to operate in the environment considered in this valve test, and the fire testing of such actuators is outside the scope of ISO 10497:2010.

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.
The terms and definitions applicable to this European Standard are given in FprEN 15714-1.

This European Standard specifies the "face-to-face" (FTF) and "centre-to-face" (CTF) dimensions for PN and Class designated metal valves used in flanged pipe systems.
This European Standard covers valves with the following PN, Class and DN values:
-   PN 2,5; PN 6; PN 10; PN 16; PN 25; PN 40; PN 63; PN 100; PN 160; PN 250; PN 320; PN 400;
-   Class 125; Class 150; Class 250; Class 300; Class 600; Class 900; Class 1 500; Class 2 500;
-   DN 10; DN 15; DN 20; DN 25; DN 32; DN 40; DN 50; DN 65; DN 80; DN 100; DN 125; DN 150; DN 200; DN 250; DN 300; DN 350; DN 400; DN 450; DN 500; DN 600; DN 700; DN 750; DN 800; DN 900; DN 1 000; DN 1050; DN 1 200; DN 1 400; DN 1 600; DN 1 800; DN 2 000.
For valves in other shell materials than metal the same FTF and CTF dimensions may be used.
For relationship between DN and NPS see Annex B.