The Febco LF860 is a reduced pressure assembly (RPA). It is available in 2 ½” – 10” sizes and has been in production since 2011 . The body is made of ductile iron with a fused epoxy coating. The outside body is visually different then the 860 with the relief valve body being an epoxy coated ductile iron instead of brass. Parts are not interchangeable between the 860 and LF860.