Wallace&Tiernan Series 32-050/32-055 Volumtric Screw type feeders feature chemical resistant plastic and stainless steel construction, design simplicity and reliable service feeding many water and wastewater chemicals. such as Alum, Calcium Hydroxide, Potassium Permanganate, diatomaceous earth etc.
There are two basic models: Series 32-050 Percent Timer Version and Series 32-055 Variable speed controlled version.
The Series 32-050 is manually set by a percent timer which delivers a constant volume of material. It is easily adapted to automatic start stop control by use of an external switch.
The Series 32-055 is electric-variable -speed controlled and is available in three control arrangements-manual; automatic start stop, and automatic (mA)-manual arrangement.
Each of the feeders are available as stand alone, mounted on a solution tank or mounted on a stand beside the tank.