Portable water tank with valved drain sleeve

A portable water tank, comprising:

• a) a foldable receptacle having a bottom wall and vertical sidewalls;
• b) a frame to support said sidewalls in an upright position, said frame including upper and lower rails, and vertical posts joining said upper rail to said lower rail;
• c) said receptacle including a pliable drain sleeve disposed near said bottom wall, said sleeve extending between a pair of said posts and corresponding portion of said lower rail disposed between said pair of said posts, said sleeve overlying said corresponding portion of said lower rail;
• d) a valve attached to said frame, said valve is operably associated with said drain sleeve, said valve having an open position to allow water within said receptacle to flow through said drain sleeve, and a closed position to keep water from flowing through said drain sleeve;
• e) said valve including a movable member;
• f) a hinge attached both to one end of said movable member and to said frame;
• g) reinforcement members attached to said corresponding portion of said lower rail and said pair of posts;
• h) said movable member including a horizontal position wherein said drain sleeve is sandwiched between said reinforcement member on said corresponding portion of said lower rail and said movable member, thereby to close said drain sleeve to water flow;
• and
• i) a lock to retain said movable member in said horizontal position.