... CSS SeriesSPRAX PART # - 1680866 4" ANSI 150 FIG34 Y-Strainer, Cast Steel, w/ 1/8 Perforated Screen,1-1/2" NPT Drain ... to strain foreign matter from pipelines and provide economical protection for costly pumps, meters, valves, and other similar mechanical ... preventfluid bypass into the out-of-service chamber — making for easy, hasslefreestrainer basket servicing.A unique flow diverter valve cartridge ...