ROTARY SPRINKLER

摘要

An impact sprinkler has a nozzle connected to a housing and a discharge deflector member connected to a rotatable shaft assembly without a dynamic seal between the nozzle and the deflector. The sprinkler has different replaceable nozzles and discharge deflectors for providing desired discharge characteristics. The shaft assembly and housing have contacting braking surfaces outside of the water flow providing a frictional braking force dependent on both water flow rate and pressure. The sprinkler has a deflection member for rotating an impact assembly relative to the shaft assembly while a pin supports the impact assembly at a position above the deflection member. A lower portion of the shaft assembly may be positioned in a housing recess, and a highly wear resistant material may be disposed on a surface of either the shaft assembly or the recess for providing improved wear characteristics.