Underdrain Assembly and Method of Manufacturing the Same

摘要

An underdrain apparatus and a method for manufacturing such apparatus are provided. The underdrain apparatus can be extruded in long sections as a unitary part to provide a light weight, strong, and easily installed underdrain assembly. The underdrain apparatus may be extruded in various sizes, shapes, and materials. Further, the underdrain apparatus may include a passageway for transporting water to and from the filter media and/or air to the filter media. In some embodiments, apertures are formed in the underdrain apparatus during an extrusion process to provide a path between the passageway and the filter media.

主权项

1. An underdrain apparatus comprising:
a trapezoidal cover member that includes: a first generally planar surface; a second generally planar surface adjacent at least a first side of the first generally planar surface; a third generally planar surface adjacent to at least a second side of the first generally planar surface, wherein a plurality of orifices extends through at least one of said first, second and third generally planar surfaces; anda substantially cylindrical body adjoined to at least one of said first, second and third generally planar surfaces, said substantially cylindrical body comprising a water transport member that has apertures through a lower-most half of the substantially cylindrical body, said second and third generally planar surfaces each having an edge that rests on a floor when the underdrain assembly is installed.