- New
F02-2104 is a flexible reducer coupler by Valterra, designed to connect an RV sewer hose system to a rigid drain pipe. It accommodates 3" thin-wall pipe and 3" Schedule 40 ABS pipe, with different inside diameters of approximately 3-1/2" and 3". Two hose clamps are included to secure the connections. This fitting is useful when adapting an RV waste-drain system to a rigid sewer-pipe installation. Confirm pipe dimensions before installation.