The Leopold Type S ® underdrain is an HDPE. ® 1000 or 200 media retainers and factory-installed on the Type S underdrain to save time at installation. Installation Procedure for Installing IMS 200 media retainer on existing Type S Underdrain System – San Angelo TX 1 Type S Underdrain with IMS 200 media retainer. Leopold® Type XA™ Underdrain FiLTrATion innovATion For The neXT generATion Engineered for superior uplift resistance and easy installation, with a revolutionary.

Some of the benefits of Leopold® underdrain are: • Superior Air and Water Distribution for effective backwash. The dual parallel lateral design and the water recovery channels, both developed by Leopold®, give even distribution with less than 5% maldistribution and no dead zones, even in extra-long length laterals. • Cleaner filters mean longer filter runs and higher water efficiency, more product water, less waste. This lowers your operating costs per gallon or liter of filtered water. • Air Flow Adjustability allows YOU more control and saves energy and water. Air scour rate can be adjusted from 0.3 to 1.5 m/min, enabling collapse pulse cleaning during concurrent air/water backwash with various media configurations.

Air scour provides higher shear forces and cleaner media, with less wastewater generation. • Faster installation with fewer parts than nozzle systems and no false floor. Underdrain blocks are light weight for easily handling and snap together for quick installation, shortening construction time and putting you in production quicker. • Design Flexibility with different heights to allow for different combinations of lateral lengths and vertical filter heights, as well as different flume configurations. Some of the benefits of the IMS Media Retainer are: • Replaces up to 14 inches (35.6 cm) of Gravel Media Support allowing for the same media depth in less vertical space, reducing construction costs. • Compatible with all Leopold® Underdrains, I.M.S® retainers installwith simple tools, saving time and labor, again reducing construction time and costs. Cambridge Vocabulary For Ielts Advanced Rapidshare. • Provides even backwash distribution to deep clean filters.

• Two Sizes for different applications • I.M.S.® 200 with 0.2 mm overlapping slots is specifically designed for drinking water treatment using dual media or mono media anthracite. Supports media of effective sizes down to 0.45 mm sand • I.M.S.®1000 with 1 mm tapered slots is specifically designed for wastewater treatment applications, including the elimi-NITE denitrification system developed by Leopold. Supports media of effective size down to 1.7 mm.

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