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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Physically rigid design reduces flexing and withstands pressures up to 15 psi. September 13, Stellar Management. Can be designed for wall-feed applications as well as center flume, front flume and Leopold Flat Bottom flume.

The underdrain evacuates filtered water from the filter during the filter run and introduces water and air during backwashing and air scour. Air stability is improved with all orifices providing uniform and continuous airflow.

Provides even backwash distribution to deep clean filter media. Physically rigid design reduces flexing and withstands pressures up to 15 psi 1 bar.

Leopold Universal Type S® Underdrain by Xylem

More driving head results in longer filter runs. More driving head results in longer filter run times. Superior air and water distribution for effective backwash giving longer filter runs and lower operating costs.

Reduces construction costs reducing vertical footprint by inches underdraln by eliminating gravel support allowing for the same media depth in less vertical space.

New at WEFTEC: Xylem Launches Underdrain with 360-Degree Backwash Capability

Type S underdrain is ideal for designs requiring longer laterals. Both are constructed of high-density polyethylene HDPE construction for strength and corrosion resistance. Uniform distribution of air and water even in extra-long lengths.


Durable reinforced polymer undedrrain strength against harsh elements while reducing overall weight for easier transport and installation. Suitable for wastewater plants, biologically active filters and more. The Type underdrain helps solve challenges in biologically active filtration systems, indirect and direct potable reuse applications, new drinking water applications addressing the U.

The modular underdrain blocks are easy to handle and snap together for quick installation. Locate a distributor in your area. The underdrain is compatible with all standard flume and air configurations.

By washing percent of the media between laterals, the underdrain increases filter run times, reduces backwash water consumption and extends media filter life, leading to lower operating costs and underdraon savings. Click the button below to directly contact the supplier. Easy handling – snaps together for quick installation. Handles for quick and easy installation, and snaps together underdraln quick installation.

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

This eliminates media elopold zones that can develop due to gaps in backwashing coverage. Both feature a unique water recovery channel for superior air scouring and water backwash performance.

The IMS Cap eliminates the need for gravel thereby allowing for deeper media depth. The design includes slots and orifices around the entire underdrain to help clean the filter media from every angle during the backwash process. Comments on this site are submitted by users and are not endorsed by nor do they reflect the views or opinions of COLE Publishing, Inc.

The bolt-down solution is engineered for reliability with an uplift resistance of over 15 psi. With lateral lengths over 40 feet, it is suited for long filter runs and retrofits of existing filters. At WEFTEC this year, Xylem highlighted its Leopold Type underdrain — a bolt-down underdrain system for greenfield projects lopold rehabilitation of water treatment filtration projects.


Comments are moderated before being posted. 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.

Can be designed for center undererain front underdfain. Self-cleaning technology removes sediment buildup in the underdrain over time. Leopold Underdrains Thanks to Xylem. Company Profile Email Us. Suitable for drinking water plants and desalination plants. EPA LT2 rules on contaminants of emerging concern, and the rehabilitation of existing leopolv filters.

March 06, Towering Above the Competition. Request more detailed information or literature. Newsletter Sign Up Join 16, of your colleagues who already get great content delivered right to their inbox.

It includes an innovative degree backwash capability designed to boost efficiency by undererain to 20 percent. Get General articles, news and videos right in your inbox!

Superior air and water distribution for effective backwash, giving longer filter runs and lower operating costs. Easy handling – snap together for quick installation. Best uplift resistance – withstands uplift pressures up to 30 psi 2 bar. Precision-engineered 1 mm slots support media down to microns 1. 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 polymer matrix is corrosion-free.

Leopold — A Xylem Brand. Type SL underdrain features a lower profile, making it ideal for shallow filters where greater filter media depth is desired. Click Here To Download: