spaced from the shoulder 58 maintains a sealing relationship adjacent the intersection of the passage 40 and the bore 42 whether the valve actuator is in the closed or open position a latch sleeve 70 is slidably mounted on the coupling end displaceable between release and lock positions for coupling the adapter 10 to the part 12 the sleeve 70 supports radially displaceable detent balls 72 and has a counterbore 74 that frees the balls 72 when the sleeve is in the release position a spring 76 interposed between the body 34 and sleeve 70 normally biases the sleeve to the lock position as shown in fig2 whereby an annular ring 78 limits movement thereof and contains the balls in the counter bore when the sleeve is in the release position a sealing 0 ring 80 disposed on the interior diameter of the body 34 establishes a sealing relationship with the outer surface of the part 12 prior to connecting the adapter 10 to the part 12 the handle is rotated to the closed condition of fig1 to prevent the actuator from engaging the valve 22 during coupling to connect the adapter 10 to the coupling part 12 it is merely necessary to insert the extension end 18 into the coupling end 38 by holding the adapter 10 in one hand and pulling the sleeve 70 in an axial direction away from the end 38 the balls 72 may be displaced radially sliding the coupling end 38 continues over the coupling part 39 s extension end 18 until movement is limited and release the sleeve 70 occurs whereupon the stressed spring 76 retracts closing the sleeve and causing the detent balls 72 to engage in a recess defined on the coupling part 39 s body coupling the adapter 10 and.