This part of EN 1555 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 inThis 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 ℃ as reference temperature; NOTE 2 For other operating temperatures, derating coefficients should be used, see EN 1555-5. c) an operating temperature between-20 ℃ and +40 ℃. EN 1555 (all parts) 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 Referenced Document
EN 12100:1997 Plastics piping systems - Polyethylene (PE) valves - Test method for resistance to bending between supports
EN 12117:1997 Platics Piping Systems - Fittings, Valves and Ancillaries - Determination of Gaseous Flow Rate/Pressure Drop Relationships
EN 1555-1:2010 Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 1: General
EN 1555-2:2010 Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 2: Pipes
EN 1555-3:2010 Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 3: Fittings (Incorporates Amendment A1: 2012)
EN 1555-5:2010 Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 5: Fitness for purpose of the system
EN 1680:1997 Plastics piping systems - Valves for polyethylene (PE) piping systems - Test method for leaktightness under and after bending applied to the operating mechanism
EN 1704:1997 Plastics piping systems - Thermoplastics valves - Test method for the integrity of a valve after temperature cycling under bending
EN 1705:1996 Plastics piping systems - Thermoplastics valves - Test method for the integrity of a valve after an external blow
EN 682:2002 Elastomeric seals - 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 1555-4:2011 history
2021EN 1555-4:2021 Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 4: Valves
2011EN 1555-4:2011 Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 4: Valves
2002EN 1555-4:2002 Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 4: Valves