| 摘要 |
A full range nozzle assembly comprises a nozzle member having a base at one end with an inlet for connection to a water supply via a riser tube, and a head at the opposite end with a plurality of spaced spray orifices arranged in a ring around the periphery of the head member, with internal passageways connecting each spray orifice to the inlet. The orifices are of varying dimensions and are arranged to produce sprays having at least two different arc widths. Removable plugs in the passageways control the connection of each outlet to the inlet, and a flow control device is adjustable mounted in the spray head for controlling the flow rate of water from the supply into the inlet. Precipitation rate control or adjustment is provided by varying the effective cross-section of the respective passageways according to the arc width of the orifice with which they are connected.
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