Raven Industries released strong third quarter results on Wednesday. The Flow Controls Division continues to perform well while the Engineered Films Division (which includes Raven’s geomembrane lines) saw 23 percent growth in third quarter sales. Raw material costs (including the often volatile resin market) pinched some profit, but overall volume was good and high demand in the oil and gas industry for pit and pond liners continued to be one of the company’s signature successes.