BS & B

[ filtration type water treatment plants for industrial use; liquid filters and strainers; and refrigeration units for the chemical, oil field, and petroleum fields; ] packaged direct and indirect fired petroleum heaters and heat exchangers; [ fan and ] heater units, [ grain and feed drying units, and parts therefor; petroleum and oil field treatment, processing, and handling units, namely, ] treaters, [ vaporizers, ] dryers, dehydrators, [ heat exchangers, fans, and steam generators; chemical dehydration plants and equipment for gas wells comprised of ] dehydrators, [ contractors, heat exchangers, ] condensers, and separators