A dishwasher (10, 250), comprising: a wash tub (16, 252); a rack (18, 20, 254, 256, 310) supported in the wash tub (16, 252) and movable between a loading and a washing position; a rotatable conduit supported by the rack (18, 20, 254, 256, 310) for movement with the rack (18, 20, 254, 256, 310), the conduit having a connector for receiving fluid; wherein the conduit comprises a tubular spray element (100, 144, 304, 306, 308) being rotatable about a longitudinal axis thereof, wherein the tubular spray element (100, 144, 304, 306, 308) includes one or more apertures (104, 342) extending through an exterior surface thereof; and a docking arrangement (28, 302) coupled to a rear wall (212, 234) of the wash tub (16, 252) and configured to engage with the connector of the conduit when the rack (18, 20, 254, 256, 310) is in the washing position to supply fluid to the conduit, characterized in that, the docking arrangement (28, 302) including: a rotatable docking port (216, 238, 314, 316, 318, 320, 322, 324) positioned to receive the connector of the conduit when the rack (18, 20, 254, 256, 310) is moved from the loading position to the washing position and the rotatable docking port (216, 238, 314, 316, 318, 320, 322, 324) rotatable about an axis of rotation, the rotatable docking port (216, 238, 314, 316, 318, 320, 322, 324) further configured to engage the connector of the conduit such that the conduit rotates about the axis of rotation along with rotation of the rotatable docking port (216, 238, 314, 316, 318, 320, 322, 324), and the rotatable docking port (216, 238, 314, 316, 318, 320, 322, 324) further including a fluid inlet (380, 414) configured to receive fluid; and the dishwasher (10, 250) comprising a valve member disposed at a predetermined rotational position about the axis of rotation to restrict fluid flow to the conduit when the fluid inlet (380, 414) is rotated to the predetermined rotational position; wherein the valve member comprises a mating surface matching the fluid inlet (380, 414), so as to restrict fluid flow to the conduit when the fluid inlet (380, 414) is rotated to the predetermined rotational position. a wash tub (16, 252); a rack (18, 20, 254, 256, 310) supported in the wash tub (16, 252) and movable between a loading and a washing position; a rotatable conduit supported by the rack (18, 20, 254, 256, 310) for movement with the rack (18, 20, 254, 256, 310), the conduit having a connector for receiving fluid; wherein the conduit comprises a tubular spray element (100, 144, 304, 306, 308) being rotatable about a longitudinal axis thereof, wherein the tubular spray element (100, 144, 304, 306, 308) includes one or more apertures (104, 342) extending through an exterior surface thereof; and a docking arrangement (28, 302) coupled to a rear wall (212, 234) of the wash tub (16, 252) and configured to engage with the connector of the conduit when the rack (18, 20, 254, 256, 310) is in the washing position to supply fluid to the conduit, the dishwasher (10, 250) comprising a valve member disposed at a predetermined rotational position about the axis of rotation to restrict fluid flow to the conduit when the fluid inlet (380, 414) is rotated to the predetermined rotational position; wherein the valve member comprises a mating surface matching the fluid inlet (380, 414), so as to restrict fluid flow to the conduit when the fluid inlet (380, 414) is rotated to the predetermined rotational position.