includes tabs 15 see fig6 these elements are combined into an assembly that can be formed as a single disposable entity the flushing port member 6 may have a luer taper allowing fluid fittings to make leak free connections between mating taper fitting parts the means through which the disposable valve assembly 3 and rotating spool assembly 2 are attached can allow for rapid assembly and disassembly in an exemplary embodiment attachment can be achieved via insertion and rotation of the disposable valve assembly 3 into the rotating spool assembly 2 for example using a quarter turn bayonet fitting see fig2 and 6 the disposable valve assembly 3 and the rotating spool assembly 2 may also be rigidly attached to each other through mechanical means so that the disposable valve assembly 3 and rotating spool assembly 2 are treated as a single entity and disposed of after single patient use see fig1 also provided herein is a mating stem member 4 the mating stem member 4 can be shaped to mate with an endoscope accessory port for example a taper on the insertion stem 8 can be provided to allow the tapered geometry to form a surface to surface mate with the internal geometry of an endoscope accessory port upon insertion to an endoscope see fig4 5 the elongated portion above the tapered portion can also be engineered to be long enough so that it accommodates the height of all endoscopic caps currently on the market without detriment to the surface to.