Profile: Harrington Industrial Plastics, LLC is a distributor of industrial plastic pipes. Our product line includes pipe & fittings, piping accessories, valves & actuation, tubing & hoses, pumps, and tanks. Our IPEX MP series compact ball valves are suitable for industrial and plumbing applicationS. These valves are connected with thread and socket. Our Plasto matic® check valves are self sealed with patent design and depending upon the gravity. It's leak free sealing protects it from potential hazards created by reverse flow of osmosis liquid.