to be screwed onto the exposed end portion of the outlet port 28 the top surface of the container cap 18 can be formed with an annular recess 46 that receives the bottom end of the coupling 20 in a particular embodiment the discharge hose coupling comprises a standard size hose bard fitting having a u00be inch threaded end portion and a u00be inch hose bard end portion in the latter embodiment the outer diameter of the threaded end portion the first end portion 42 in the illustrated embodiment can be reduced such as by machining the outer surface so that it can fit more easily into the annular recess 46 the discharge conduit 22 can be for example a flexible hose or tube which can be connected to coupling 20 by inserting the hose bard end 44 into one end of the hose the hose bard end 44 frictionally engages the inner surface of the hose to secure the hose to the coupling in other embodiments the discharge conduit can be non flexible or rigid tubing or piping additionally the discharge conduit and or the coupling 20 can have other forms in one implementation for example the discharge conduit can be connected to a coupling by a threaded connection e g the conduit can be provided with a threaded end portion that screws onto a threaded end portion of the coupling in another implementation the second end 44 of the coupling 20 can have relatively smooth outer surface without hose barbs in which case a conventional hose clamp can be used to connect the discharge conduit to the second end of the coupling.