rear housing 110 are snap fitted together in a manner described below a bracket 164 is formed integrally with a side of the front housing 100 this bracket 164 attaches the main housing containing the pump 112 to a dish washing machine not shown an electrical plug 174 allows alternating current to be carried through wires 176 from an activator not shown when it is switched on by a user who desires to wash a load of dishes upon activation an inlet suction branch 106 brings a predetermined amount of liquid detergent flowing from a reservoir not shown in a direction i into a flexible rubber u shaped tube 116 held in place at an inlet to the pump 112 by a u shaped inlet channel 104 integrally formed on a top surface of the front housing 100 inside the pump 112 there is a plurality of plastic rollers 122 on tips x y and z of a triangular plastic rotor 114 confined between the front housing 100 and the rear housing 110 the rollers 122 compress the flexible tube 116 at equally spaced intervals against an interior side of a curved wall 130 although three rollers 122 are shown.