An apparatus and system that is reusable for eliminating intestinal effluent gases and liquids from ostomy bags. The apparatus comprises an impermeable, hollow tube (1) with open extremities that is pushed half way through an orifice punctured on the upper top (10) section of an ostomy bag wall when used as a vent (5) or at the lower bottom (13) section of an ostomy bag wall when installed as a drain (6), an o-ring (21) having the hollow tube (1) section located in the interior of the inner impermeable bag wall (4) passing there through, an identical o-ring (2) having the hollow tube (1) section located at the exterior (15) outer protective bag wall (20), passing there through. The two o-rings (2) and (21) are dimensioned to fit and hold by friction or other methods around the outer circumference of the hollow tube (1), wherein the two o-rings (2) and (21) are secured face to face to adjacent regions of the interior (16) and exterior (15) protective outer bag wall (20) if existent and inner impermeable bag wall (4). A stopper 3) dimensioned to fit inside the section of the hollow tube(1) located at the exterior (15) of the bag walls (4) and (20) is inserted or removed to control the evacuation of the intestinal effluent gases and liquids.
