NF EN ISO 407, S90-110 (08/2023)

This document applies to stirrup type valve connections with safety lugs for medical gas cylinders with a maximum operating pressure of 200 bar and/or a maximum test pressure of 300 bar. NOTE 1 This type of fitting is mainly used for small bottles (5 l or less). NOTE 2 In this document, the unit of pressure used is the bar, due to its universal use in the field of technical gases. It should be noted however that this unit is not part of the International System of Units (SI), and the corresponding SI unit for measuring pressure is the pascal (Pa, 1 bar = 105 Pa = 105 N/m2) . This document specifies: — basic dimensions of fittings; — requirements for construction variants of stirrup-type valve connections; — the dimensions and positions of the holes and lugs of the outlet fittings. It also specifies the dimensions and positions of holes and lugs of fitting outlets for gases and gas mixtures.
(Automatic translation from French)