Model No. FSADPIK;Everything you need to connect 2 sump pumps to a single 1 1/2″ discharge line;Connects 2 primary sump pumps OR primary and backup pump;Easy installation with a standard screwdriver, no glue or cement required;Full flow 1-1/2″ check valves and Y-connector allows maximum pump output;Silent check valves eliminate water hammering for quiet operation