This specification covers the requirements for aircraft, hydraulic, self-sealing, quick disconnect couplings, for use in Type II hydraulic systems (−65 to +275 °F temperature range) as defined by AS5440.

Classification:

Hydraulic self-sealing, quick disconnect couplings shall be of the following classes and types:

Class 1000: 1000 psig

Class 3000: 3000 psig

Class 4000: 4000 psig

Class 5000: 5000 psig

Type I Quick Disconnects shall have a visual indication that they are completely connected and open to flow.

Type II Quick Disconnects shall have both a visual and touch indication that they are completely connected and open to flow.