FSC 4610 Water Purification Equipment

Includes Demineralizers; Filtration Equipment; Ice and Snow Melters.

Excludes Water Purification Compounds (FSC 6810 and 7930); Water Softening Compounds (FSC 6810 and 7930).

FSC 4620 Water Distillation Equipment, Marine and Industrial

Excludes Laboratory Distillation Apparatus (FSC 6640).

FSC 4630 Sewage Treatment Equipment