scope:

This is the 4th edition (2000), as cited, when purchased you will also receive the current edition.

Cryogenic liquid (and cryogenic vapor) transfer connections are specified in this standard. A limited standard flanged connection system is also offered. The connections offered are intended for use with cryogenic liquid transport equipment, such as cargo tanks, portable tanks, and railway tank cars but do not apply to barges and marine tankers. Termination points at cryogenic liquid production plants and on stationary storage vessels that directly interface with this transport equipment are also included. Connections are offered for use with only the most commonly transported cryogenic products as listed in table 1 and are intended for use exclusively with the specified products. All other products without regard to normal boiling point are beyond the scope of this standard. These connections are not intended for use on DOT 4L cylinders or on small equipment using connections less than 1-¼ inch (32 mm). The physical design of the fittings, other than the connection configuration at the coupling point, is also beyond the scope of this standard.

Specialized vacuum-jacketed bayonet connections, which are required for some cryogenic products, are not included in this standard.