U-Shaped Underdrain Tubes And Flap Valve

U-Shaped Underdrain Tubes

The U-shaped underdrain tubes for water and air distribution are low-pressure resistant, featuring a unique dual-layer water and air distribution structure with upper and lower layers. It consists of horizontal water and air distribution pipes (U-shaped underdrain tubes), vertical water distribution pipes, and vertical air distribution pipes. This structural design ensures that the uniformity of water and air distribution in the shutter filters is superior to other types of low-resistance air-water distribution systems. The inner and outer surfaces of the horizontal U-shaped underdrain tubes are smooth and flat, with wall thicknesses that meet requirements and are uniformly distributed. They exhibit good straightness and possess sufficient stiffness. During the initial installation of filter media or when the filter bed is empty for maintenance, the horizontal U-shaped underdrain tubes can withstand the pressure generated by the filter media and support layers above without any deformation or damage.

Email Details

Flap Valve

The flap valve mainly consists of four components: cylinder, drive crank arm, flap frame, and flap plate. All components are manufactured from high‑strength stainless steel.

Email Details