valve 22 to be mounted upon the adapter and the valve 22 includes a plurality of ports 24 communicating with the bore 16 an annular seat 26 is defined upon the valve 22 and includes a resilient seal a t slot 28 defined in the end of the valve 22 permits the valve to be rotated for assembly to the adapter a valve sleeve 30 is mounted upon a cylindrical surface of the adapter and is axially displaceable thereon and sealed to the adapter by the elastomeric seal 32 a radially extending ridge 34 defined upon the valve sleeve 30 is disposed toward the valve nose 36 and the ridge 34 includes a cam surface 38 for retaining the ball detents as later described a compression spring 40 biases the valve sleeve 30 to the left fig1 for maintaining engagement of the nose 36 with the valve seat 26 when the coupling parts are disconnected an annular body 42 is also threaded upon the adapter 14 at threads 44 and the body 42 includes an annular shoulder 46 ball openings 48 fig3 are defined in the body 42 and a plurality of such openings exist and receive the detent balls 50 at its outer end the.