Broken sprinkler flow restriction or flow shut off suppressor for sprinkler
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United States of America Patent
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Jan 19, 2021
Grant Date -
N/A
app pub date -
May 5, 2016
filing date -
Jul 29, 2005
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A restriction valve in accordance with an embodiment of the present invention includes a valve body adapted to be positioned at an inlet of the sprinkler, wherein the valve body includes a central opening through which water flows into the sprinkler, a rib extending downwardly from the valve body at a location beyond the margin of the central opening, a valve member configured to cooperate with the central opening to open and close the valve, wherein the valve member includes a valve stem extending downwardly from the valve member, and positioned and configured to be movably supported in a guide ring formed at a lower end of the rib, wherein the valve stem is movable vertically to move the valve member to its open and closed positions and a resilient member biasing the valve stem such that the valve member remains in an open position until water pressure pushing against the valve member reaches a predetermined level to move the valve member into the closed position to restrict the flow of water into the sprinkler
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