01 Water Treatment: Gravity Sand Filter (Municipal / Industrial)

Water Treatment:  Gravity Sand Filter (Municipal / Industrial)

Manufacturers: Past and Present

  • Cochrane / Crane Cochrane [Crane – Warlo]: Newterra
  • Evoqua: Leopold: Xylem
  • Graver (Marmon)
  • Hungerford & Terry
  • Infilco
  • Leopold: Xylem
  • Newterra
  • Ovivo
  • Permutit (softener division started in the 1910s) (Permutit USA begun in the 1910s; became part of US Filter in 1993)
  • Roberts Filter Group
  • Smith Loveless
  • Suez / Degremont
  • Veolia: Greenleaf: Dusenflo
  • WesTech
  • WETS LLC
  • Wigen
  • Xylem: Leopold: Evoqua

Note:  There were early designs of “Automatic Valveless Gravity Filters.”

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