Leopold Type S Technology Underdrain Flyer

Upward airflow through competitor underdrains creates low pressure zones causing some orifices to become air deprived, or reverse flow. The S/SL design tackles this issue through a patented built-in water recovery channel; this ensures uniform and continuous airflow across all the top-deck orifices allowing water to re-enter and equalize the low-pressure areas. The dual lateral design provides superior results and improved performance.

Type S/SL underdrain results:

• Broader airflow range, 2 to 5 scfm/sf | 36 to 91 m/hr
• Improved air stability under all operating conditions with all orifices providing uniform and continuous airflow
• Lower water maldistribution — less than 5% (total)