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Underdrains

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WEDGE-FLOW product quality is an absolute necessity in the design and manufacture of flat retention screens and underdrains.

Slot sizes of .005" to .018" are required for resin, sand and carbon columns. In addition, massive support structure capable of withstanding up to 150 psi and higher pressure differentials is often required. Retaining screens are commonly installed by welding directly to the vessel, and become a vital, integral part of the process.

The importance of engineering expertise and attention to detail during production can not be understated. Our A.S.M.E. certified welders are in constant communication with engineering during all phases of design and manufacture. It is this understanding of process requirements that guides LEEM from the onset of your project.







Capabilities

Types

Conical
Filter Cap

Flat

Lateral

Slot Size

.005" to .018"

The properly designed underdrain must:

  • Be structurally sound.
  • Allow maximum vessel capacity of granular media.
  • Uniformly support the load over its entire surface area.
  • Retain the finest granules and resist clogging.
  • Provide minimum pressure loss and/or uniform drainage.
  • Be of corrosion-resistant material to insure long service life, especially in inaccessible locations or hazardous service.
  • Permit backwash, regeneration in place or hydraulic discharge.
  • Eliminate the need for subfill.
  • Applications

    Activated Carbons
    Catalysts

    Desiccants

    Ion Exchange Resins

    Molecular Sieves

    Sand

    Silica Gels

    Other Packing Materials

    Certification

    A.S.M.E

    Industries Served

    Beverage
    Cement

    Chemical

    Corn milling

    Fluid treatment

    Food processing

    Mineral processing

    Petrochemical

    Petroleum

    Pharmaceuticals

    Pulp and paper

    Sugar

    Waste water treatment

    Water Treatment

    Well water and irrigation


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