is supplied by using a fill spout which communicates directly with the water seal chamber and facilitates the entry of the water seal therein.
The fill spout of the present invention is adapted to rotatably engage an aperture formed in the casing of the drainage device and comprises a body having opposing top and bottom sides defining a distal end and a proximal end. The top side includes a funnel for facilitating the pouring of a liquid water seal into the water seal chamber, while the bottom side forms a rectangular-shaped recess which is exposed when the fill spout is placed in the closed position. The funnel comprises an opening at the proximal end of the body for inserting a water-filled container therethrough and a depending lip formed atthe distal end for preventing the water seal from running along the bottom side of the funnel when pouring the water seal through the funnel. Moreover, the funnel further comprises opposing lateral sides which extend outwardly from the body of the fill spout with each lateral side having a stop formed along the edge thereof. The stop is adapted to abut the interior of the casing and prevents any further movement of the fill spout when it is placed in the open position by the user. The body further includes an integral tab having a rest that extends in the proximal direction and provides a means for grasping a portion of the body by a user when opening and closing the fill spout. To facilitate the pouring of