AS 4631:2018 PDF

This Standard specifies the minimum safety and performance requirements for limited flexibility connectors for use on natural gas (NG), simulated natural gas (SNG), town gas (TG), tempered liquefied petroleum gas (TLP) and liquefied petroleum gas (LPG) (liquid and vapour phases).

This Standard is not applicable for direct connection from a gas cylinder to services, including changeover valves and regulators (i.e. pigtails). Refer to AS/NZS 1596.