RICHARD P BEVERLY
Engineers in Butler, PA
License number
Pennsylvania PE040211R
Category
Engineers
Type
Professional Engineer
Address
Address
Butler, PA 16001
Professional information
Cap For Underdrains In Gravity Filters
US Patent:
5149427, Sep 22, 1992
Filed:
Apr 3, 1991
Appl. No.:
7/679947
Inventors:
Marvin A. Brown - Sewickley PA
Gerald D. Wolfe - Zeliepnople PA
Richard P. Beverly - Butler PA
Gerald D. Wolfe - Zeliepnople PA
Richard P. Beverly - Butler PA
Assignee:
The F.B. Leopold Company, Inc. - Zelienople PA
International Classification:
B01D 2422
US Classification:
210274
Abstract:
A cap for filter underdrain blocks is provided, wherein the cap has a porous body with a top surface, a bottom surface and downwardly extending flanges. The cap is installed on a filter block having a plurality of orifices in a top wall of the filter block for channelling fluids to and from an overyling filter media. The bottom surface of the cap along with the flanges define a distribution chamber above the orifices, and the cap has a porosity such that a fine grain filter media may be placed directly on the top surface of the cap without media penetrating therethrough and clogging the underdrain blocks. The distribution chamber enhances distribution of backwash fluids throughout the filter media, and the cap eliminates the need for a separate gravel support layer to be installed between the fine grain filter media and the underdrain blocks.