Abstract: An assembly useful in directing a narrow water stream against an obstruction inside drain plumbing includes an exteriortubular housing within which a spray wand may be telescopically received. A resilient seal is engaged to the free end of the wand, for capture between the tubular housing and the surface around the drain plumbing openings. The other end of the wand is connected across a valve to a source of water at pressure to be ejected through an axial drilling in the free end towards the obstruction. The lateral edge of the tubular housing may include cut-outs to allow manipulation of the valve handle once the valve is secured to the housing.