Embodiments of the present technology may include a system for coating surfaces. The system can include a rotatable nozzle. The rotatable nozzle can include a plurality of output ports. The plurality of output ports can dispense liquid material on surfaces. The system can also include a housing enclosure. The housing enclosure can include a motor. The motor can rotate the rotatable nozzle. The housing enclosure can also include a solid straight pipe passing through the motor. The solid straight pipe can continuously provide the liquid material to the rotatable nozzle concurrently with rotational action.

A multi-mode sprinkler adjustable for part or full circle operation to irrigate a selected area is provided. The sprinkler includes a nozzle for dispensing fluid, a set of gears for rotating the nozzle and an arc setting mechanism that cooperates with the set of gears. The arc setting mechanism comprises a fixed trip for switching to a first direction for the nozzle and an adjustable trip movable relative to the fixed trip for setting an arc of rotation for the nozzle in the part circle mode. The arc setting mechanism also includes a toggle for engaging the fixed trip and the adjustable to switch between a first direction and a second direction when in the part circle mode. In the full circle mode, the adjustable trip overlaps at least in part the fixed trip, such that the fixed trip deflects the toggle radially inward, allowing continuous rotation of the nozzle.