Abstract: An assembly is disclosed for cleaning a drain conduit. The assembly includes first and second conduit sections that are communicably connected to respective upstream and downstream sections of the drain conduit. A valve, interconnected between the first and second conduit sections, is selectively opened to permit communication between the first and second conduit sections and closed to restrict communication between the first and second conduit sections. A first connector section, communicably attached to and extending transversely from the first conduit section, is selectively engaged by one of a pressure source and a vacuum source to introduce, when the valve is closed, one of a pressure and vacuum, respectively, into first conduit section, whereby the upstream section of the drain conduit is cleaned.