The dark grey PVC elbow features female socket connections to change the direction of piping 90 degrees. Chemtrol fittings connect PVC piping lengths together with solvent cementing, 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. PVC Schedule 80 has the highest long-term hydrostatic strength of any other major thermoplastic material used for piping. Chemtrol PVC fittings are lightweight, easy to install, maintenance-free, and will not rust, scale, pit or corrode. 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.