Leopold has long been a worldwide leader in the water and wastewater treatment industry supplying both filtration and clarification systems. Leopold History. • In the filtration business since • Pioneer of the Dual/ Parallel Lateral Underdrain. • Benefits from own product development center/ R&D. Leopold Underdrain vs. Nozzle Floor. Page 2. Leopold Underdrain vs. Nozzle Underdrain. Dual Parallel Lateral Filter Underdrains. Nozzle Floor.

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Click Here To Download: Type S underdrain is ideal for designs requiring longer laterals. Superior air and water distribution for effective backwash giving longer filter runs and lower operating costs. Both feature a unique water recovery channel for superior air scouring and water backwash performance.

Leopold Universal Type S® Underdrain by Xylem

Superior air and water distribution for effective backwash, giving longer filter runs and lower operating costs. Comments on this site are leopood by users and are not endorsed by nor do they reflect the views or opinions of COLE Publishing, Inc.

The modular underdrain blocks are easy to handle and snap together for quick installation. The design includes slots and orifices around the entire underdrain to help clean the filter media from every angle during the backwash process.


Locate a distributor in your area. Leoplod driving leopoldd results in longer filter run times. Leopold — A Xylem Brand. Precision-engineered 1 mm slots support media down to microns 1. Leopold Type S technology underdrain is designed to provide uniform distribution of wash water and air to clean every corner of the filter without media upset. At WEFTEC this year, Xylem highlighted its Leopold Type underdrain — a bolt-down underdrain system for greenfield projects and rehabilitation of water treatment filtration projects.

EP2525887A4 – Apparatus and method for securing underdrain filter block – Google Patents

Uniform distribution of air and water even in extra-long lengths. Both are constructed of high-density polyethylene HDPE construction for strength and corrosion resistance. Leopold Underdrains Underdfain to Xylem. Get General articles, news and videos right in your inbox!

Easy underdrxin – snap together for quick installation. Physically rigid design reduces flexing and withstands pressures up to 15 psi 1 bar.

Reduces construction costs replacing up to 14 inches 36 cm of gravel media support allowing for the same media depth in less vertical space. The underdrain evacuates filtered water from the filter during the filter run and introduces water and air during backwashing and air scour.

EPA4 – Apparatus and method for securing underdrain filter block – Google Patents

Can be designed for center and front flumes. More driving head results in longer filter runs. Newsletter Sign Up Join 16, of your colleagues who already get great content delivered right to their inbox.


Suitable for wastewater plants, biologically active filters and more. March 06, Towering Above the Competition. The underdrain is compatible with all standard flume and air configurations. Can be designed for wall-feed applications as well as center flume, front flume and Leopold Flat Bottom flume.

Both feature the dual parallel lateral leoplld pioneered by Leopold, ensuring uniform distribution of water and air at each dispersion orifice opening even in extra long lengths.

Click the button below to directly contact the supplier. Company Profile Undererain Us. Suitable for drinking water plants and desalination plants. Durable reinforced polymer maximizes strength against harsh elements while reducing overall weight for easier transport and installation. Self-cleaning technology removes sediment buildup in the underdrain over time.

The bolt-down solution is engineered for reliability with an uplift resistance of over 15 psi. Reduces construction costs reducing vertical footprint by inches cm by eliminating gravel support allowing for the same media depth in less leopokd space.