I.M.S media retainers replace up to 14 in (35 cm) of gravel, allowing additional media depth or greater vertical head for the backwash cycle. The Type S underdrain can be specified with Leopold I.M.S 1000 or 200 media retainers to eliminate the need for gravel media support. Gain filter height with the I.M.S® media retainer Our patented wire mesh installation process also strengthens the grout bond for improved uplift resistance. Meanwhile, the Grout-TITE® bridge prevents grout from entering the flume, so there’s no costly cleanup. Installation tolerances that are more forgiving also make for simpler installations and lower filter construction costs. This is ideal for older installations where construction tolerances were not as rigid.

The Leopold Type S underdrain is equipped with internal baffles that can be installed to a level tolerance of ☐.25 in (6 mm). Proper installation is critical to lasting underdrain performance that’s why Leopold underdrains are designed for ease of installation. The air scour rate can be adjusted from 2 to 5 scfm/ft2 (36 to 91 m/hr) and the water rate adjusted from 3 to 8 gpm/ft2 (7 to 20 m/hr) in the concurrent backwash, enabling effective collapse pulse cleaning with a wide range of media configurations. In concurrent air/water backwash, the Type S underdrain enables high combined air/water rates due to the large air/water interface inside the lateral. The Type S underdrain facilitates both sequential and concurrent air/water backwash, as well as water only backwash. The dual parallel lateral design and the water recovery channels, both developed by Leopold, give even air and water distribution and eliminate dead zones. Leopold Type S underdrains promote trouble-free operation and effective media cleaning with closely spaced, non-clogging orifices for uniform air and/or water backwash. It is ideal for installations requiring longer laterals, as well as applications using large filter media.

Suitable for high concurrent air and water rates, extra-long laterals, and standard flume configurations, the Type S underdrain offers great design flexibility. The Leopold Type S underdrain is an HDPE underdrain, designed for strength and corrosion resistance. This lowers your operating costs per gallon/liter of filtered water.Īll Leopold underdrains deliver the superior performance that has made the Leopold underdrain the industry leader for nearly a century. Providing cleaner filter media means longer filter runs and higher water efficiency, more product water and less waste. Gravity media filtration underdrains collect filtered water during the filter run, and distribute air and water during the backwash cycle.

Flume water air