Walker Process Equip Div of McNish Corp

Walker Process Equipment, a division of McNish Water with over 60 years in the wastewater treatment industry, designs and manufactures engineered process equipment from its facility in Aurora, Illinois. The company's product portfolio spans primary and secondary treatment, anaerobic digestion, and grit removal for municipal wastewater plants. Clarifier offerings include bridge-supported units with segmented plow flights, rectangular collectors, spiral rake mechanisms, tapered suction header clarifiers, and the UniMix clarifier with integrated mixing capability. For biological treatment, Walker Process manufactures Rotating Biological Contactors and trickling filter rotary distributors, offering retrofit and repair services for RBC units of any manufacturer. Anaerobic digestion equipment covers fixed covers, floating covers, gasholder covers, combination covers, external heat exchangers, combination boilers and heat exchangers, digester mixers, and the InstoMix rapid chemical flash mixer. Grit removal systems include the GritWasher, HydroSeparator, and Rolling Grit technologies. The company also produces scum concentrators for grease and skimmings handling, plus a full range of rehabilitation and retrofit replacement parts including drive units, skimming equipment, influent wells, and center columns. Walker Process holds ASME U-stamp certification for boiler and pressure vessel fabrication and maintains AWS-certified welding capabilities. Each project receives a dedicated project manager, and the parts department retains records for every piece of equipment ever shipped, enabling OEM repair part supply for emergency and preventive maintenance.