Rotary nozzle assembly having insertable rotatable nozzle disc

摘要

A rotary drive sprinkler has a nozzle assembly having a recess in a cylindrical housing for receiving a cylindrical nozzle selection disc having a plurality of nozzle openings. The cylindrical nozzle selection disc is rotatable to place one of its nozzle openings in an exit flow passage in the cylindrical housing. An arc set indicating and setting mechanism is included.