The 3" Febco 860 Reduced Pressure Zone (RPZ) backflow preventer was introduced in 1993 and was discontinued in 2013. The 860 was replaced by the LF860, which was introduced to comply with The lead free laws of 2014. Repair parts are diferent between the 860 and LF860. Known as Febcos "Master Series", the 860 feature a swing check design with bottom mounted relief valve. The body is constructed of epoxy coated ductile iron. The relief valve body is made of bronze. Modular style relief valve. Springs are self contained when covers are removed. No special tools are required for servicing.