Patent ID: 6024869
Filing Date: 2000-02-15
Classification: B01D,F02M,Y10S

Abstract:
A filter head for use with an associated liquid filter; the filter head comprising:(a) a block member defining:(i) an inlet port;(ii) an inlet channel positioned for fluid communication between said inlet port and the associated liquid filter;(iii) a first outlet port;(iv) a second outlet port; and(v) an outlet channel positioned for fluid communication between the associated liquid filter and at least said first outlet port; and(b) a bypass valve assembly, within said block member, having open and closed orientations;(i) said bypass valve assembly, when in said open orientation, permitting fluid to flow from said inlet channel and bypass the associated liquid filter;(ii) said bypass valve assembly, when in said closed orientation, forcing fluid to flow from said inlet channel and through the associated liquid filter; and(c) a back pressure flow valve assembly, within said block member, having open and closed orientations;(i) said back pressure flow valve assembly, when in said open orientation, providing fluid communication between the associated liquid filter through said outlet channel and said second outlet port;(ii) said back pressure valve assembly, when in said closed orientation, blocking fluid communication between the associated liquid filter through said outlet channel and said second outlet port.