Patent ID: 6231762
Filing Date: 2001-05-15
Classification: B01D

Abstract:
A wastewater filtration system comprising:a housing defining filter chamber and having an inlet end and an outlet;the housing including a length of cylindrical conduit;a shutoff valve assembly connected to an inlet end of the housing;the shutoff valve including a closure element pivotally movable between an open position and a closed position;the shutoff valve including biasing means biasing the valve to the closed position in the absence of a filter in the chamber;the closure element being positioned proximate the inlet such that the shutoff valve is responsive to the presence of a filter in the chamber to position the closure element to the open position; andwherein the housing is oriented substantially vertically, and wherein the closure element remains substantially vertically below the inlet when in the open position, such that a solid waste rising up toward the inlet is deflected by the closure element.