CONNECTICUT
AQUEST CORPORATION provided a manufacturer in CT with several weld shop backwall filtration systems. These self-contained units provide uniform laminar backdraft air flow and HEPA grade filtration efficiency to capture and control hexavalent chromium [Cr(IV)] fumes generated by welding stainless steel. The backwall units were equipped with overhead exhaust “regain” whereby a portion of the cleaned exhaust air is directed to the front of the work station to effectively generate a clean air push over the shoulder of the weld station operator. When coupled with the cantilever roof option, the regain feature serves to dramatically improve system capture efficiency and ensure that all weld smoke and fumes are controlled.