This document establis es the dimensions of the flanged connections of the filling and emptying devices of highly refrigerated liquefied air gas (nitrogen or oxygen) containers Classification according to the regulations for transport by rail, by land and by
NF T81-126:2020 history
2020NF T81-126:2020 Containers for refrigerated liquefied gases - Transfer device - DN 40 connections
1987NF T81-126:1987 Refrigerated liquefied gas containers. Transfer devices. Dn 40 couplings for refrigerated O2 or N2.