syringe tip proceeds further into the coupler it will contact sealing head 17 of the collapsible valve member pushing sealing head 17 away from annular sealing rib 11 a transverse groove 21 in sealing head 17 permits liquid to flow into the tubular syringe adapter it has passed through the optional filter 15 and through one or more grooves 22 in the valve member housing 12 thus when the collapsible valve member 16 is collapsed liquid is free to flow around valve member 16 and into the syringe as its plunger is retracted after the syringe has been filled the protector skirt 8 is grasped in one hand the syringe barrel is grasped with the other hand and the syringe and coupling separated with a simple longitudinal motion this causes the valved coupling to automatically reclose as shown in fig2 the tubular syringe tip receiver has a wall thickness sufficiently thin to clear the internal threads of a needle retention sleeve that is present on some types of syringes if desired the tubular syringe tip receiver 9 could have external threads to mate with the threaded collar 23 as this would require a rotational motion for coupling and uncoupling the syringe such structure has not been included in this preferred embodiment of our invention fig3 and 4 illustrate a protective cap for the tubular syringe tip receiver when a syringe is not connected to the valved coupler this protector includes a handle 24 a luer wedge plug 25 and a protective skirt 26 the wedge plug 25 is recessed inwardly from the end of skirt 26 protecting the wedge plug 25 from inadvertent contamination the wedge plug 25 fits against luer surface.