Datasheet | May 6, 2009

Datasheet: Leopold Universal Type S™ Underdrain by Xylem

Source: Leopold -- A Xylem Brand

Because the upward flow of air through an underdrain creates low-pressure zones in the underdrain, some orifices can become starved for flow . . . or even reverse flow. Leopold has designed a water recovery channel into its Type S® Technology Underdrain to help ensure uniform and continuous airflow from all of the top deck orifices. The water recovery channel is designed to allow water to re-enter the underdrain to equalize the low-pressure areas. This dramatically improves the performance of the underdrain and provides superior results, particularly with the dual lateral design.

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