Abstract: An integral check valve has a stem with a first interior bore extending longitudinally inward from a first end thereof and a spindle having a central shaft having a first end and an opposing second end with flange circumscribing the central shaft. The interior bore is sized to receive the stem and a portion of the central shaft extending from the first end to the flange. The integral check valve may be a component of a plumbing fixture that further includes a hollow body having a water inlet, a water outlet and an integral check valve receiving conduit. The integral check valve receiving conduit has threads sized to engage the outwardly extending threads of the stem.

Abstract: A grid drain for use in sinks without overflow drains comprising a solid cylindrical shell having an upper end and a lower end; the exterior side of the solid cylindrical shell has threads which thread from the lower end to the upper end; the upper end has an angulated flange arranged to seat in the drain opening in the sink; and the angulated flange has a top solid surface having a plurality of drain holes; wherein the size of the drain holes is large enough so that an air bubble will not form or will break immediately upon formation.

Abstract: A cover assembly and methods for covering undersink piping includes insulative cover pieces placed over respective pipe sections such that their ends are adjacent at pipe junctures. Collars are slidable over or inside the cover pieces to be moved to cover the junctures. An alternative cover structure may be wrapped around the pipe juncture to form a generally continuous insulative cover, or alternatively, the fastening structures are insulated such that when the pipe sections are assembled together, the cover pieces and insulating fastening structures form a continuous insulative cover. In an alternative embodiment, one of the cover pieces is dimensioned to slide upwardly and downwardly on a pipe section and a collar structure is placed over the exposed pipe section to provide a continuous cover piece.

Abstract: A cover assembly and methods for covering undersink piping includes insulative cover pieces placed over respective pipe sections such that their ends are adjacent at pipe junctures. Collars are slidable over or inside the cover pieces to be moved to cover the junctures. An alternative cover structure may be wrapped around the pipe juncture to form a generally continuous insulative cover, or alternatively, the fastening structures are insulated such that when the pipe sections are assembled together, the cover pieces and insulating fastening structures form a continuous insulative cover. In an alternative embodiment, one of the cover pieces is dimensioned to slide upwardly and downwardly on a pipe section and a collar structure is placed over the exposed pipe section to provide a continuous cover piece.

Abstract: A cover assembly and methods for covering undersink piping includes insulative cover pieces placed over respective pipe sections such that their ends are adjacent at pipe junctures. Collars are slidable over or inside the cover pieces to be moved to cover the junctures. An alternative cover structure may be wrapped around the pipe juncture to form a generally continuous insulative cover, or alternatively, the fastening structures are insulated such that when the pipe sections are assembled together, the cover pieces and insulating fastening structures form a continuous insulative cover. In an alternative embodiment, one of the cover pieces is dimensioned to slide upwardly and downwardly on a pipe section and a collar structure is placed over the exposed pipe section to provide a continuous cover piece.