OS&Y AND NRS VALVES 200 PSI FLANGED ENDS RESILIENT SEAT NRS GATE VALVE MODEL: SFL-NRS-200-F 200 PSI FLANGED ENDS RESILIENT SEAT OS&Y GATE VALVE MODEL: SFL-OSY-200-F 200 PSI, 14” AND 16”, FLANGED ENDS RESILIENT SEAT OS&Y GATE VALVE MODEL: SFL-OSY-200-F 300 PSI FLANGED ENDS RESILIENT SEAT OS&Y (OUTSIDE SCREW & YOLK) GATE VALVE MODEL: SFL-OSY-300-F 300 PSI FLANGED ENDS RESILIENT SEAT NRS (NON RISING STEM) GATE VALVE MODEL: SFL-NRS-300-F