Profile: Dempster Industries, Inc. manufactures pumps, windmills, water systems, recycling trailers and fertilizer equipment. Our product line includes windmills, hand pumps, well cylinders, towers, well drilling machines, flywheel type gasoline engines, water storage tanks, piston pumps and centrifugal pumps. We offer submersible water well pumps, centrifugal pumps, metering pumps for pumping anhydrous ammonia and farm chemicals. Our trailer is used for sorting and hauling recyclables.