Dishwasher spray arm feed system

A dishwasher, comprising:

• a tub having a sump and a side wall;
• a pump fluidly connected with the sump;
• at least one adjustable height basket supported within the tub and arranged to be pulled out of the tub and inserted back into the pub;
• a supply tube supported adjacent the tub side wall and receiving wash liquid from the pump, the supply tube having a manifold portion formed into the supply tube including a plurality of closed protrusions which are selectively opened to form one or more outlet openings;
• a coupling retainer connected to the supply tube and having one or more funnel shaped coupling ports corresponding in number and spacing to the outlet openings of the supply tube;
• a valve member supporting one or more flapper valve elements corresponding in number and spacing to the outlet openings of the supply tube for closing the coupling ports;
• a gasket member having one or more openings corresponding in number and spacing to the outlet openings of the supply tube wherein each of the openings forms a sealing surface,
• the valve member disposed adjacent the gasket member such that said flapper valve elements close against said gasket, said valve member and said gasket member being captured between the coupling retainer and the supply tube such that the flapper valve elements and gasket opening sealing surfaces generally align with the coupling ports;
• a spray arm mounted to the adjustable height basket and having a feed tube extending toward the supply tube, the feed tube having a coupling end, the coupling end arranged to be inserted into one of the coupling ports for fluidly connecting the feed tube to the supply tube when said basket is inserted into said tub;
• and
• a hanging support element extending downwardly from the adjustable height basket and engaging the coupling end of the feed tube such that the coupling end is securely located relative to the adjustable height basket,
• wherein the coupling end is sealingly engaged by the sealing surface upon insertion into one of the coupling ports and opens the flapper valve element corresponding to the coupling port into which the coupling end is inserted.