Patent ID: 7736506

Claim:
A system for use with a filter having a filter bed that is periodically subjected to fluids including a liquid, a gas and/or a combination of liquid and gas; said system comprising: (a) a distribution chamber for receiving and distributing one or more fluids, said distribution chamber including an inlet for receiving one or more fluids; (b) a plurality of laterals operably connected to said distribution chamber for receiving one or more fluids from said distribution chamber, said plurality of laterals each being configured to direct one or more fluids to a filter bed of a filter, said plurality of laterals including a first lateral being spaced a first distance from said inlet of said distribution chamber and a second lateral being spaced a second distance from said inlet of said distribution chamber, said first distance being different than said second distance such that a velocity of a fluid is greater at said first lateral than at said second lateral; and, (c) a distribution plate extending across at least a portion of said first lateral and at least a portion of said second lateral, said distribution plate being configured to provide a first flow area through which one or more fluids from said distribution chamber pass into said first lateral and a second flow area through which one or more fluids from said distribution chamber pass into said second lateral, said first flow area being greater than said second flow area, said distribution plate includes at least one knock-out for varying the size of at least one of said first flow area and said second flow area.