The black PP thread flange features a one-piece solid design and a female NPT thread connection. Chemtrol PP fittings are lightweight, easy to install and maintenance-free. Please refer to Chemtrol technical data sheets, chemical resistance guides and catalogs for engineering and installation information. Chemtrol industrial thermoplastic flow-control systems perform well in harsh environments because they are made with materials that are resistant to abrasion, corrosion, weather, chemical and biological attack. Chemtrol black polypropylene demonstrates excellent tensile strength, UV stabilit