Low profile underdrain strainer assembly with improved distribution/fastening means
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United States of America Patent
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Jul 2, 1991
Grant Date -
N/A
app pub date -
Jul 11, 1989
filing date -
Jul 11, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A strainer assembly for use in a filter having a granular media bed supported above a floor. The strainer assembly includes a low profile body member having a two tiered construction, the bottom tier having a larger diameter than the upper tier. Each of the tiers has a series of substantially equally spaced apart, generally vertical, slot openings formed therein. The total area of the openings in the bottom tier is from about 3 to 15 times greater than the total area of the openings in the upper tier. An improved distribution/fastening means is provided for directing fluid through the body member and for retaining the body member in position above the floor.
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