Model F-1 Easy Riser® Swing Check Valve; Groove/Groove, 6"

Model J-1 Alarm Check Valve; Flange/Groove, 3"

Model J-1 Alarm Check Valve; Groove/Groove, 4"

Model F-1 Easy Riser® Swing Check Valve; Model F-1, Flange/Flange, 4"