摘要：

Shower apparatus has nozzles provided with a valve member movable between spray and purge positions relative to an outlet and spring biased toward the purge position, the valve member being moved between spray and purge positions by changes in the spray fluid pressure in the conduit to which the nozzles are connected. Passage means in the nozzle provides fluid flow from the outlet in both purge and spray positions of the valve member and in its spray position also provides fluid flow between the valve member and the nozzle body to flush out debris.

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