Patent ID: 7186338
Filing Date: 2007-03-06
Classification: B01D

Abstract:
1. A filter housing comprising: a head having an inlet and an outlet in fluid communication with a filter cartridge; a collar surrounding said head having a plurality of lower bosses, said collar forming an annular space between an inner wall of said collar and an outer wall of said head; a sump for enclosing the filter cartridge within said filter housing, said sump having a plurality of upper bosses adapted to align with the plurality of lower bosses of said collar and wherein when the housing is in a closed position and the collar is connected to said sump the upper and lower bosses are vertically aligned; a radial sealing means for providing a liquid-tight seal between said sump and said head; a pressure relief valve for depressurizing said sump prior to removing said sump from said head comprising: a means for locking movement of the plurality of bosses of said sump with the plurality of bosses of said collar when the plurality of bosses are vertically aligned when said sump is inserted into the annular space and twisted.