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Pretreatment Washers

The pretreatment washer is considered the most important part of the coating process in order to achieve a desirable and long-lasting finish. At AIS, our focus is on building long-lasting, stainless steel washers that will maintain peak performance and will always look good. A poly or steel washer have a limited lifespan and will lose performance and aesthetic appearance over time. With our custom designed canopy assembly we eliminate upper-housing warping resulting from over-welding seams and also are able to offer faster delivery times. We will provide you with the correct washer design to include; number of stages, heating systems, drain-zone lengths, halo and counter-flowing rinses, and spray or immersion tanks to meet your requirements. Steel or SS Gusher pumps, Maxon burners, Fiberglass skid resistant grating, Bex nozzles, UniSpray quick-disconnects, and PVC and CPVC piping components are our standard; however we can integrate components from your chosen vendor or material. Additional options that may be included are: pump vfd’s, insulated tanks and housings, waste water treatment systems, reverse osmosis systems, evaporators, and oil skimmers.

W158: AWOC 3-Stage Stainless Steel Pretreatment Washer W158: AWOC 3-Stage Stainless Steel Pretreatment Washer

Design: 2’-0”w x 4’-0”h Opening, 16 FPM



W157: 6-Stage Stainless Steel Pretreatment Washer W157: 6-Stage Stainless Steel Pretreatment Washer

Design: 2’-0”w x 4’-0”h Opening, 6 FPM



W156: 5-Stage Stainless Steel Pretreatment Washer W156: 5-Stage Stainless Steel Pretreatment Washer

Design: 4’-0”w x 4’-0”h Opening, 14 FPM



W155: Colmet Plaforization / Ecopur  / Toran Pretreatment Washer W155: Colmet Plaforization / Ecopur / Toran Pretreatment Washer

Design: 3’-0”w x 6’-6”h Opening, 4-6 FPM



W154: Koch 5-Stage Stainless Steel Pretreatment Washer W154: Koch 5-Stage Stainless Steel Pretreatment Washer

Design: 3’-6”w x 8’-0”h Opening, 15-20 FPM



W153: Cincinnati 5-Stage Stainless Steel Pretreatment Washer W153: Cincinnati 5-Stage Stainless Steel Pretreatment Washer

Design: 2’-6”w x 3’-0”h Opening, 15 FPM



W-152: TTX 3-Stage Stainless Steel Washer W-152: TTX 3-Stage Stainless Steel Washer

Design: 4’-10” w x 6’-0”h Opening, 20 FPM

Can be modified to 5-stage system, or other.



W-150: 3-Stage Koch Stainless Steel / FRP Washer W-150: 3-Stage Koch Stainless Steel / FRP Washer

Design: 3’-0”w x 5’-0”h Opening, 8 FPM



W-148: Ventcor 3-Stage,  Dual-Tunnel Stainless Steel Washer W-148: Ventcor 3-Stage, Dual-Tunnel Stainless Steel Washer

Design:  1'-6" wide x 4'-0" high opening, 10 FPM,

Can be made to 4'-6" W x 4'-6" H Single-Tunnel Opening



W-147: GFS 4-Stage Stainless Steel Washer W-147: GFS 4-Stage Stainless Steel Washer

Part Opening:                          4’-0” W x 5’-0” H



W-141: 3-Stage Stainless Steel Washer W-141: 3-Stage Stainless Steel Washer

Design: 2’-6”w x 4’-0”h Opening, 6 FPM


W-140: Eissenman Stainless Steel Monorail Washer W-140: Eissenman Stainless Steel Monorail Washer


W-139: 3-Stage S.S. Washer W-139: 3-Stage S.S. Washer


W-137 3-Stage Stainless Steel Washer, 42" x 84" W-137 3-Stage Stainless Steel Washer, 42" x 84"