SAE J2600 applies to the design and testing of Compressed Hydrogen Surface Vehicle (CHSV) fueling connectors, nozzles, and receptacles. Connectors, nozzles, and receptacles must meet all SAE J2600 requirements and pass all SAE J2600 testing to be considered as SAE J2600 compliant. This document applies to devices which have Pressure Classes of H11, H25, H35, H50 or H70. 1.1 Purpose SAE J2600 is intended to: • Prevent vehicles from being fueled with a Pressure Class greater than the vehicle Pressure Class; • Allow vehicles to be fueled with Pressure Class equal to or less than the vehicle Pressure Class, • Prevent vehicles from being fueled by other compressed gases dispensing stations; • Prevent other gaseous fueled vehicles from being fueled by hydrogen dispensing stations.
Revision of the document is needed to include the geometry for a high flow H35 fueling nozzle/receptacle combination. Geometry specifications for such a fueling connection are already described by ISO, but ISO standards are not recognized by Authorities Having Jurisdiction (AHJs) in the US. Currently, several US transit agencies are already using an ISO compliant fueling connection available in the market to fast fill hydrogen powered fuel cell transit buses, and several additional transit fueling stations are funded and in the process of implementing the use of a H35HF connection. Inclusion of H35HF in SAE J2600 will also allow for 3rd party testing laboratory certification, which is increasingly what AHJs require. Inclusion will also facilitate the exclusion of filling passenger vehicles at H35HF flow rates at transit hydrogen fueling stations that implemented the use of an H35HF connection device. In addition, there is an industry need for preliminary consideration, direction and/or geometry proposals for H70HF - for the purpose of facilitating future fast filling of heavy duty gaseous hydrogen vehicles with 70MPa gaseous hydrogen.