Proof
ISO/PRF 4437-4
Plastics piping systems for the supply of gaseous fuels — Polyethylene (PE) — Part 4: Valves
Reference number
ISO/PRF 4437-4
Edition 3
© ISO 2026
Proof
Under development
This draft is in the approval phase.
Will replace ISO 4437-4:2022

General information

Life cycle

Sustainable Development Goals

This standard contributes to the following Sustainable Development Goals

9
Industry, Innovation and Infrastructure
11
Sustainable Cities and Communities
12
Responsible Consumption and Production

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