EN 1555-4:2011
(Main)Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 4: Valves
General Information
- Abstract
This European Standard specifies the characteristics of valves made from polyethylene (PE) for piping systems in the field of the supply of gaseous fuels.
NOTE 1 Valves made from other material than polyethylene designed for the supply of gaseous fuels conforming to the relevant standards are permitted to be used in PE piping system according to EN 1555 provided they have relevant PE connection for butt fusion or electrofusion ends (see EN 1555 3).
It also specifies the test parameters for the test methods referred to in this standard.
In conjunction with Parts 1, 2, 3 and 5 of EN 1555, it is applicable to PE valves, their joints and to joints with components of PE and other materials intended to be used under the following conditions:
a) a maximum operating pressure, MOP, up to and including 10 bar );
b) an operating temperature of 20 °C as reference temperature;
NOTE 2 For other operating temperatures, derating coefficients should be used, see EN 1555 5.
c) an operating temperature between -20 °C and +40 °C.
EN 1555 covers a range of maximum operating pressures and gives requirements concerning colours and additives.
NOTE 3 It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into account their particular requirements and any relevant national regulations and installation practices or codes.
It is applicable to bi-directional valves with spigot end or electrofusion socket intended to be fused with PE pipes conforming to EN 1555 2 without any fittings or with PE fittings conforming to EN 1555 3.
This European Standard covers valves for pipes with a nominal outside diameter dn 315 mm.
- Status
- Withdrawn
- Publication Date
- 10-May-2011
- Withdrawal Date
- 22-Sep-2026
- Technical Committee
- CEN/TC 155 - Plastics piping systems and ducting systems
- Drafting Committee
- CEN/TC 155/WG 32 - Valves
- Current Stage
- 9960 - Withdrawal effective - Withdrawal
- Start Date
- 07-Jul-2021
- Completion Date
- 23-Sep-2026
Relations
- Effective Date
- 14-May-2011
- Effective Date
- 14-Jul-2021
- Effective Date
- 25-Aug-2026
- Effective Date
- 09-Feb-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
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Frequently Asked Questions
EN 1555-4:2011 is a standard published by the European Committee for Standardization (CEN). Its full title is "Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 4: Valves". This standard covers: This European Standard specifies the characteristics of valves made from polyethylene (PE) for piping systems in the field of the supply of gaseous fuels. NOTE 1 Valves made from other material than polyethylene designed for the supply of gaseous fuels conforming to the relevant standards are permitted to be used in PE piping system according to EN 1555 provided they have relevant PE connection for butt fusion or electrofusion ends (see EN 1555 3). It also specifies the test parameters for the test methods referred to in this standard. In conjunction with Parts 1, 2, 3 and 5 of EN 1555, it is applicable to PE valves, their joints and to joints with components of PE and other materials intended to be used under the following conditions: a) a maximum operating pressure, MOP, up to and including 10 bar ); b) an operating temperature of 20 °C as reference temperature; NOTE 2 For other operating temperatures, derating coefficients should be used, see EN 1555 5. c) an operating temperature between -20 °C and +40 °C. EN 1555 covers a range of maximum operating pressures and gives requirements concerning colours and additives. NOTE 3 It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into account their particular requirements and any relevant national regulations and installation practices or codes. It is applicable to bi-directional valves with spigot end or electrofusion socket intended to be fused with PE pipes conforming to EN 1555 2 without any fittings or with PE fittings conforming to EN 1555 3. This European Standard covers valves for pipes with a nominal outside diameter dn 315 mm.
This European Standard specifies the characteristics of valves made from polyethylene (PE) for piping systems in the field of the supply of gaseous fuels. NOTE 1 Valves made from other material than polyethylene designed for the supply of gaseous fuels conforming to the relevant standards are permitted to be used in PE piping system according to EN 1555 provided they have relevant PE connection for butt fusion or electrofusion ends (see EN 1555 3). It also specifies the test parameters for the test methods referred to in this standard. In conjunction with Parts 1, 2, 3 and 5 of EN 1555, it is applicable to PE valves, their joints and to joints with components of PE and other materials intended to be used under the following conditions: a) a maximum operating pressure, MOP, up to and including 10 bar ); b) an operating temperature of 20 °C as reference temperature; NOTE 2 For other operating temperatures, derating coefficients should be used, see EN 1555 5. c) an operating temperature between -20 °C and +40 °C. EN 1555 covers a range of maximum operating pressures and gives requirements concerning colours and additives. NOTE 3 It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into account their particular requirements and any relevant national regulations and installation practices or codes. It is applicable to bi-directional valves with spigot end or electrofusion socket intended to be fused with PE pipes conforming to EN 1555 2 without any fittings or with PE fittings conforming to EN 1555 3. This European Standard covers valves for pipes with a nominal outside diameter dn 315 mm.
EN 1555-4:2011 is classified under the following ICS (International Classification for Standards) categories: 23.060.01 - Valves in general; 23.060.99 - Other valves; 91.140.40 - Gas supply systems. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 1555-4:2011 has the following relationships with other standards: It is inter standard links to EN 1555-4:2002, EN 1555-4:2021, ISO 10933:1997, ISO 11357-6:2008, EN ISO 1167-1:2006, EN 736-2:1997, EN 1704:1997, EN ISO 17778:2015, EN 1555-2:2025, EN 1555-1:2010, EN 1705:2025, EN ISO 1133-2:2011, EN 744:1995, EN 682:2002, EN 1680:2025. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 1555-4:2011 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Cevni sistemi iz polimernih materialov za oskrbo s plinastimi gorivi - Polietilen (PE) - 4. del: VentiliKunststoff-Rohrleitungssysteme für die Gasversorgung - Polyethylen (PE) - Teil 4: ArmaturenSystèmes de canalisations en plastique pour la distribution de combustibles gazeux - Polyéthylène (PE) - Partie 4: RobinetsPlastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 4: Valves91.140.40Sistemi za oskrbo s plinomGas supply systems83.140.30Cevi, fitingi in ventili iz polimernih materialovPlastics pipes, fittings and valvesICS:Ta slovenski standard je istoveten z:EN 1555-4:2011SIST EN 1555-4:2011en,fr,de01-december-2011SIST EN 1555-4:2011SLOVENSKI
STANDARDSIST EN 1555-4:20031DGRPHãþD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1555-4
May 2011 ICS 91.140.40; 23.060.99 Supersedes EN 1555-4:2002English Version
Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 4: Valves
Systèmes de canalisations en plastique pour la distribution de combustibles gazeux - Polyéthylène (PE) - Partie 4 : Robinets
Kunststoff-Rohrleitungssysteme für die Gasversorgung - Polyethylen (PE) - Teil 4: Armaturen This European Standard was approved by CEN on 17 March 2011.
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, 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 © 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1555-4:2011: ESIST EN 1555-4:2011
Determination of the leaktightness of seat and packing . 18A.1General . 18A.2Test method . 18 SIST EN 1555-4:2011
Polyethylene (PE)
Part 1: General; EN 1555-2, Plastics piping systems for the supply of gaseous fuels
Polyethylene (PE)
Part 2: Pipes; EN 1555-3, Plastics piping systems for the supply of gaseous fuels
Polyethylene (PE)
Part 3: Fittings; EN 1555-4, Plastics piping systems for the supply of gaseous fuels
Polyethylene (PE)
Part 4: Valves (this standard); EN 1555-5, Plastics piping systems for the supply of gaseous fuels
Polyethylene (PE)
Part 5: Fitness for purpose of the system; CEN/TS 1555-7, Plastics piping systems for the supply of gaseous fuels
Polyethylene (PE)
Part 7: Guidance for the assessment of conformity. NOTE EN 12007-2:2000 [1] prepared by CEN/TC 234 “Gas infrastructure” deals with the recommended practice for installation of plastics pipes system in accordance with EN 1555 (all parts). 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. SIST EN 1555-4:2011
Materials requirements for seals used in pipes and fittings carrying gas and hydrocarbon fluids EN 736-1:1995, Valves
Terminology
Part 1: Definition of types of valves EN 736-2:1997, Valves
Terminology
Part 2: Definition of components of valves EN 744:1995, Plastics piping and ducting systems
Thermoplastics pipes
Test method for resistance to external blows by the round-the-clock method EN 1555-1:2010, Plastics piping systems for the supply of gaseous fuels
Polyethylene (PE)
Part 1: General EN 1555-2, Plastics piping systems for the supply of gaseous fuels
Polyethylene (PE)
Part 2: Pipes
1) 1 bar = 0,1 MPa.
Polyethylene (PE)
Part 3: Fittings EN 1555-5, Plastics piping systems for the supply of gaseous fuels
Polyethylene (PE)
Part 5: Fitness for purpose of the system EN 1680, Plastics piping systems
Valves for polyethylene (PE) piping systems
Test method for leaktightness under and after bending applied to the operating mechanisms EN 1704, Plastics piping systems
Thermoplastics valves
Test method for the integrity of a valve after temperature cycling under bending EN 1705, Plastics piping systems
Thermoplastics valves
Test method for the integrity of a valve after an external blow EN 12100, Plastics piping systems
Polyethylene (PE) valves
Test method for resistance to bending between supports EN 12117, Plastics piping systems
Fittings, valves and ancillaries
Determination of gaseous flow rate/pressure drop relationships EN 12119, Plastics piping systems
Polyethylene (PE) valves
Test method for resistance to thermal cycling EN 28233, Thermoplastic valves
Torque
Test method (ISO 8233:1988) EN ISO 1133, Plastics — Determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of thermoplastics (ISO 1133:2005) EN ISO 1167-1, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids — Determination of the resistance to internal pressure — Part 1: General method (ISO 1167-1:2006) EN ISO 1167-4, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids — Determination of the resistance to internal pressure — Part 4: Preparation of assemblies (ISO 1167-4:2007) EN ISO 3126, Plastics piping systems
Plastics components
Determination of dimensions (ISO 3126:2005) ISO 10933, Polyethylene (PE) valves for gas distribution systems ISO 11357-6, Plastics
Differential scanning calorimetry (DSC)
Part 6: Determination of oxidation induction time (isothermal OIT) and oxidation induction temperature (dynamic OIT) 3 Terms and definitions, symbols and abbreviations For the purposes of this document, the terms and definitions, symbols and abbreviations given in EN 1555-1:2010, EN 736-1:1995, EN 736-2:1997 and the following apply. 3.1 external leaktightness leaktightness of the valve body enveloping the space containing the gas, with respect to the atmosphere 3.2 internal leaktightness leaktightness between the inlet and the outlet of the valve, with the valve in the closed position SIST EN 1555-4:2011
the internal leaktightness of a valve's closing seat when closed and pressurized from either side; b)
the external leaktightness of a valve when half open 3.4 initiating torque torque required to initiate movement of the obturator 3.5 running torque torque required to achieve full opening or closing of the valve at maximum allowable operating pressure 3.6 leakage emission of gas from a valve body, or any component of a valve 3.7 valve body main part of a valve which contains the obturating device (closing element, the seat, the packing seals and the operating stop), as applicable and provides the terminal ends for connection to the PE pipe/fittings 3.8 operating device part of a valve for connection with the operating key which allows the opening and the closing of the valve 3.9 Terms relating to design
3.9.1
full bore valve valve with a flow section equal to or greater than 80 % of the section corresponding to the nominal inside diameter of the body end port [EN 736-3:2008] 3.9.2 clearway valve valve designed to have an unobstructed flow way, which allows for the passage of a theoretical sphere with a diameter that is not less than the nominal inside diameter of the body end port [EN 736-3:2008] 3.9.3 reduced bore valve valve with a flow section equal to or greater than 36 % of the section corresponding to the nominal inside diameter of the body end port and which does not correspond to the full bore valve [EN 736-3:2008] SIST EN 1555-4:2011
during storage; b)
under the effect of the gas conveyed therein; c)
with respect to the service environment and operating conditions. The requirements for the level of material performance of non-polyethylene parts shall be at least as stringent as that of the PE compound for the piping system. Other materials used in valves in contact with the PE pipe shall not adversely affect pipe performance or initiate stress cracking. NOTE Metal valve bodies for PE piping systems up to 10 bars should conform to the relevant standard of
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