AS 2473.2:2015 pdf – Valves for compressed gas cylinders Part 2: Outlet connections (threaded)and stem (inlet) threads.
For the purpose of this standard, nipples modified to incorporate 0-rings or soft tips, and handwheels to permit hand tight connections, shall be considered in compliance if the non-interchangeability specified in the Scope and all other requirements in this Standard are ma i ntai ned.
The leak tightness requirements for the inlet connections of assembled equipment intended to he connected to the valve outlets of this Standard shall he those applying to such equipment and its intended application.
All materials used in outlet connections shall be suitable for use with the chemical and physical properties (including pressure) of the intended gases, and of a strength and durability under repeated use, to ensure an adequate service life of the connection. Material specifications are not covered by this Standard.
Guidelines for the selection of compatible materials are given in the ISO 11114 series and ISO 9539. Standards applying to assembled equipment intended to be connected to the valve outlets of this Standard may provide additional requirements.
NOTE: Examples of relevant standards for assembled equipment are AS 4267 and AS 4621 tr pressure regulators. AS 4289 and AS 5034 for reticulation manifold systems. AS 1869 for LP Gas hose assemblies. Cylinder valves arc covered in AS 2473.1.
2.3 OUTLET CONNECTION MAkKING
Outlet connections shall be marked as follows:
(a) The nut shall carry the outlet connection type number (e.g. Type 10) or its abbreviation (e.g. Tb).
(b) Left-hand threads shall he identified by notches at the junctions of the hats of the nut.
AS 2473.2:2015 pdf – Valves for compressed gas cylinders Part 2: Outlet connections (threaded)and stem (inlet) threads
