Description 1-1/2″ male pipe thread, plastic inline sump check valve, with 1-1/4″ x 1-1/2″ boot with flexible connector on the discharge side, fits 1-1/2″ pump discharge threads, constructed from durable thermoplastic material, connects directly into sump pump discharge. 1-1/2 in. male NPT thread connects directly into sump pump discharge 1-1/4 in. x 1-1/2 in. flexible connector on discharge side Swing style flapper, not spring loaded Unique valve body allows for nearly 100% flow
