Patent ID: 6089413
Filing Date: 2000-07-18
Classification: B05B,B05C

Abstract:
A liquid dispensing module for alternately dispensing and recirculating liquid, the module comprising:a module body including a main passage extending along an axis, said module body further including a liquid inlet, a recirculation passage and a liquid outlet, said liquid outlet extending generally along said axis at one end of said main passage,first and second valve seats disposed in said main passage, said first valve seat being disposed generally between said liquid inlet and said liquid outlet and said second valve seat being disposed generally between said liquid inlet and said recirculation passage, anda valve stem having first and second ends and mounted for reciprocating movement within the main passage along said axis and including first and second valve members, said valve stem being movable between a dispensing position in which said first valve member is disengaged from said first valve seat to allow liquid flow from said liquid inlet into said liquid outlet and said second valve member is engaged with said second valve seat to prevent liquid flow from said liquid inlet into said recirculation passage and a recirculating position in which said first valve member is engaged with said first valve seat to prevent liquid flow from said liquid inlet into said liquid outlet and said second valve member is disengaged from said second valve seat to allow liquid flow from said liquid inlet into said recirculation passage.