| 摘要 |
<p>A multiple nozzle head for use on jet pipes or guns particularly adapted for cleaning equipment. A contactless change-over device is provided on the end of the jet pipe, which change-over device has a sealing element movable therein. The change-over device has an inlet port and at least two outlet ports with the sealing element being movable between the outlet ports. By orienting the jet pipe in a specific position, with the liquid turned off, the sealing element is gravitationally moved to a desired location so that when the liquid supply is turned on again, the sealing element will be held in the adjusted position by the liquid pressure.</p> |
