Abstract

This document specifies the characteristics of valves 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 is applicable to isolating unidirectional and bi-directional valves with spigot ends or electrofusion sockets intended to be fused with PA-U pipes or fittings conforming to ISO 16486-2 and ISO 16486-3 respectively. This document also specifies the test parameters for the test methods it describes. In conjunction with ISO 16486-1, ISO 16486-2, ISO 16486-3 and ISO 16486-5, this document is applicable to PA-U valves and their joints and to joints with components of PA-U and other materials intended to be used under the following conditions: a) a maximum operating pressure (MOP) of up to and including 18 bar[1], or limited to 16 bar under regional CEN requirements, at a reference temperature of 20 °C for design purposes; NOTE 1 For the purpose of this document and the references to ISO 8233, MOP is considered to be nominal pressure. b) an operating temperature of −20 °C to 40 °C; NOTE 2 For operating temperatures between 20 °C and 40 °C, derating coefficients are specified in ISO 16486-5. This document covers valves for pipes with a nominal outside diameter, dn, ≤ 400 mm. [1] 1 bar = 0,1 MPa = 105 Pa; 1 MPa = 1 N/mm².

Begin

2023-09-15

WI

00155A17

Planned document number

DIN EN ISO 16486-4

Project number

05402317

Responsible national committee

NA 054-05-08 AA - Plastics piping systems for the supply of gaseous fuels  

Responsible european committee

CEN/TC 155/WG 32 - Valves  

Responsible international committee

ISO/TC 138/SC 7 - Valves and auxiliary equipment of plastics materials  

draft standard

Plastics piping systems for the supply of gaseous fuels - Unplasticized polyamide (PA-U) piping systems with fusion jointing and mechanical jointing - Part 4: Valves (ISO/DIS 16486-4:2024); German and English version prEN ISO 16486-4:2024
2024-07
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previous edition(s)

Plastics piping systems for the supply of gaseous fuels - Unplasticized polyamide (PA-U) piping systems with fusion jointing and mechanical jointing - Part 4: Valves (ISO 16486-4:2022); German version EN ISO 16486-4:2022
2022-06

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