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 wash 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 wash fluid to the conduit, characterized in that the docking arrangement (28, 302) includes: a rotatable docking port (216, 238, 314, 316, 318, 320, 322, 324) positioned to receive the connector of the conduit along an axis of insertion when the rack (18, 20, 254, 256, 310) is moved from the loading position to the washing position, the rotatable docking port (216, 238, 314, 316, 318, 320, 322, 324) being rotatable about an axis of rotation and configured to engage the connector of the conduit such that the conduit rotates with rotation of the rotatable docking port (216, 238, 314, 316, 318, 320, 322, 324) about the axis of rotation; and a check valve (360, 416) coupled to and rotatable with the rotatable docking port (216, 238, 314, 316, 318, 320, 322, 324), the check valve (360, 416) movable between an opened and a closed position and biased to the closed position when the connector of the conduit is disengaged from the rotatable docking port (216, 238, 314, 316, 318, 320, 322, 324). 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 wash 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 wash fluid to the conduit, a rotatable docking port (216, 238, 314, 316, 318, 320, 322, 324) positioned to receive the connector of the conduit along an axis of insertion when the rack (18, 20, 254, 256, 310) is moved from the loading position to the washing position, the rotatable docking port (216, 238, 314, 316, 318, 320, 322, 324) being rotatable about an axis of rotation and configured to engage the connector of the conduit such that the conduit rotates with rotation of the rotatable docking port (216, 238, 314, 316, 318, 320, 322, 324) about the axis of rotation; and a check valve (360, 416) coupled to and rotatable with the rotatable docking port (216, 238, 314, 316, 318, 320, 322, 324), the check valve (360, 416) movable between an opened and a closed position and biased to the closed position when the connector of the conduit is disengaged from the rotatable docking port (216, 238, 314, 316, 318, 320, 322, 324).