Constant pressure nozzle with modulation effect
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United States of America Patent
Stats
-
Sep 15, 1981
Grant Date -
N/A
app pub date -
Apr 7, 1980
filing date -
Apr 7, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An automatically regulated constant-pressure fire-fighting nozzle having a pressure-responsive baffle element for adjusting the size of the discharge orifice in response to supply pressure changes. An upstream-directed baffle extension in opposition to the direction of fluid flow for creating a low-pressure zone adjacent said baffle element in response to high supply volume to modulate the effective displacement force acting on the orifice-regulating baffle element. The extension also serving to adjustably restrict the fluid flow passage to said orifice in response to pressure-induced displacement of said baffle element.
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