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This part of EN 1555 specifies the general aspects of polyethylene (PE) piping systems in the field of the supply of gaseous fuels.It also specifies the test parameters for the test methods referred to in this standard.In conjunction with Parts 2 to 5 of EN 1555 it is applicable to PE pipes, fittings, and valves, their joints and to joints with components of 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 1 For other operating temperatures, derating coefficients should be used, see EN 1555-5 [6].EN 1555 (all parts) covers a range of maximum operating pressures and gives requirements concerning colours and additives.NOTE 2 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.

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 part of EN 1555 specifies requirements of fitness for purpose of the polyethylene (PE) piping system in the field of the supply of gaseous fuels.It specifies the definitions of electrofusion, butt fusion and mechanical joints.It specifies the method of preparation of test piece joints, and the tests to be carried out on these joints for assessing the fitness for purpose of the system under normal and extreme conditions.It specifies the test parameters for the test methods referred to in this document.NOTE 1 This document is intended only to be used by the product manufacturer to assess the performance of components according to EN 1555-2, EN 1555-3, and/or EN 1555-4 when joined together under normal and extreme conditions in accordance with this document. It is not intended for on-site testing of pipe systems.In conjunction with Parts 1 to 4 of EN 1555, it is applicable to PE pipes, fittings, valves, their joints and to joints with components of 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 can be used, see Annex A.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.

This part of EN 1555 specifies the characteristics of pipes made from polyethylene (PE) for piping systems in the field of the supply of gaseous fuels.It also specifies the test parameters for the test methods referred to in this standard.In conjunction with Parts 1 and 3 to 5 of EN 1555, it is applicable to PE pipes, 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 1);b) an operating temperature of 20 °C as reference temperature.NOTE 1 For other operating temperatures, derating coefficients should be used, see FprEN 1555-5.EN 1555 covers a range of maximum operating pressures and gives requirements concerning colours and additives.It covers three types of pipe:- PE pipes (outside diameter dn) including any identification stripes;- PE pipes with co-extruded layers on either or both the outside and/or inside of the pipe (total outside diameter dn) as specified in Annex A, where all layers have the same MRS rating;- PE pipes (outside diameter dn) with a peelable, contiguous thermoplastics additional layer on the outside of the pipe (‘coated pipe’) as specified in Annex B.NOTE 2 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.

This document specifies the characteristics of fusion fittings made from polyethylene (PE) as well as of mechanical fittings for piping systems in the field of the supply of gaseous fuels.It also specifies the test parameters for the test methods referred to in this standard.In conjunction with Parts 1, 2, 4 and 5 of EN 1555, it is applicable to PE fittings, 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 1 For other operating temperatures, derating coefficients should be used; see EN 1555-5.EN 1555 (all parts) covers a range of maximum operating pressures and gives requirements concerning colours and additives.NOTE 2 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.This document is applicable for fittings of the following types:c) electrofusion socket fittings;d) electrofusion saddle fittings;e) spigot end fittings (for butt fusion using heated tools and electrofusion socket fusion);f) mechanical fittings.The fittings can e.g. be in the form of couplers, equal and reduced tees, reducers, bends or caps.

This part of ISO 16486 specifies the physical and mechanical properties of fittings made from unplasticized polyamide (PA-U) in accordance with ISO 16486-1, intended to be buried and used for the supply of gaseous fuels.It also specifies the test parameters for the test methods to which it refers.ISO 16486 is applicable to PA-U piping systems the components of which are connected by fusion jointing and/or mechanical jointing.In addition, it lays down dimensional characteristics and requirements for the marking of fittings.In conjunction with the other parts of ISO 16486, it is applicable to PA-U fittings, their joints, to joints with components of PA-U and to joints with mechanical fittings of other materials, and to the following fitting types: — fusion fittings — electrofusion fittings and butt fusion fittings; — transition fittings.

This part of ISO 16486 specifies the physical and mechanical properties of pipes made from unplasticized polyamide (PA-U) in accordance with ISO 16486-1, intended to be buried and used for the supply of gaseous fuels. It also specifies the test parameters for the test methods to which it refers.ISO 16486 is applicable to PA-U piping systems the components of which are connected by fusion jointing and/or mechanical jointing.In addition, it lays down dimensional characteristics and requirements for the marking of pipes.Pipes conforming to this part of ISO 16486 are jointed typically by using mechanical, electrofusion or butt fusion (see Annex A) techniques, but not by solvent cement jointing.