The Chemtrol blind flange features a one-piece webbed design. Chemtrol® PVDF fittings are lightweight, easy to install and maintenance-free. Chemtrol® fittings connect PVDF piping lengths together with thermo-seal fusion joining, threading or flanging to create a highly reliable, leak-free system. Please refer to Chemtrol technical data sheets, chemical resistance guides and catalogs for engineering and installation information. Chemtrol® Kynar® red PVDF exhibits superior strength, working temperature and chemical resistance characteristics. Red pigment provides UV protection. Kynar® PVDF offers versatile chemical resistance to slats, strong acids, dilute bases and many organic solvents such as aromatics, aliphadics and chlorinated groups. PVDF is also ideally suited for handling wet or dry chlorine bromine and other halogens. Chemtrol® premium line of plastic fittings is backed by a 1-year limited warranty. Because Chemtrol® is a NIBCO brand the flow-control fittings are unsurpassed in quality, performance and longevity.