Multi-cone, multi-stage spray nozzle
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United States of America Patent
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Jul 27, 2021
Grant Date -
Mar 1, 2018
app pub date -
Aug 23, 2016
filing date -
Aug 23, 2016
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Abstract
A multi-cone, multi-stage spray nozzle includes a nozzle body, a valve stem with a first valve head, and a second valve head attached to the first valve head. The first valve stem is biased into a closed position against a valve seat of the nozzle body by a bias device. The second valve head is continuously open. Upon the application of a first fluid pressure, which is less than a threshold fluid pressure, the bias device maintains the valve stem in the closed position while the second valve head is continuously open. And upon the application of a second fluid pressure, which is at least as great as the threshold fluid pressure, the valve stem moves to an open position while the second valve head remains continuously open.
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