Markets Served

Volumetric Dry Chemical Feeders - Model W105 Feeder Series

Dissolving Systems for Water and Wastewater Treatment Processes utilizing Model W-105 Volumetric Feeders


Acrison’s heavy-duty Model W-105 Series Volumetric Feeders feature a Dissimilar Speed, Double Concentric Auger Metering Mechanism designed to accurately and reliably meter a wide variety of Dry Chemicals commonly used in water and wastewater treatment applications. This highly effective and versatile Metering Mechanism consists of a large “Conditioning Auger” or Intromitter, concentrically mounted around a smaller “Metering Auger”, independently driven at dissimilar speeds in a “fixed proportion” to each other by a single variable speed gearmotor drive. Model W-105 Series of Feeders are supplied as part of an “equipment package” to satisfy the dry chemical metering requirements associated with a broad variety of water treatment processes.


  • Unique, Dissimilar Speed Double Concentric Auger Metering Mechanism – conditions dry solid materials to a very consistent state while efficiently and reliably filling the metering auger from a full 360 degrees
  • All Steel Construction – provides long-term reliability with minimal maintenance requirements
  • Range of Model Sizes – cover feed rates from 0.03 to 101 cubic feet per hour


Standard Construction
  • All product contact parts are 304 stainless steel including the feeder’s drive shafts and seal components
  • Variable speed AC or DC gearmotor drive with either a 30:1 or 50:1 speed range
  • Various materials of construction
  • High temperature and pressure construction
  • Quick-disconnect construction for ease-of-cleanout
  • Various AC and DC variable speed motor controllers and various control modes
  • Integral bag loading hoppers
  • Integral dust collector/hopper bag loading station
  • Integral bulk bag (super sac) unloading station
  • Dissolving tanks to produce solutions or slurries by efficiently mixing dry chemicals with water.
  • Wetting cone for “wetting” activated carbon, potassium permanganate and certain other dry chemicals