NEN EN 1555-4 : 2011
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
PLASTICS PIPING SYSTEMS FOR THE SUPPLY OF GASEOUS FUELS - POLYETHYLENE (PE) - PART 4: VALVES
01-07-2021
12-01-2013
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions, symbols and abbreviations
4 Material
4.1 Compound
4.2 Material for non-polyethylene parts
4.2.1 General
4.2.2 Metal parts
4.2.3 Elastomers
4.2.4 Other materials
5 General characteristics
5.1 Appearance
5.2 Colour
5.3 Design
5.3.1 General
5.3.2 Valve body
5.3.3 Operating cap
5.3.4 Seals
6 Geometrical characteristics
6.1 General
6.2 Measurement of dimensions
6.3 Wall thickness of the PE valve body
6.4 Dimensions of spigot ends for valves
6.5 Dimensions of valves with electrofusion sockets
6.6 Dimensions of the operating cap
7 Mechanical characteristics of assembled valves
7.1 General
7.2 Requirements
8 Physical characteristics
8.1 Conditioning
8.2 Requirements
9 Performance requirements
10 Marking
10.1 General
10.2 Minimum required marking
10.3 Additional marking
11 Delivery conditions
Bibliography
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