Patent ID: 9162244
Filing Date: 2015-10-20
Classification: B05B

Abstract:
1. A check valve for a sprinkler comprising: a valve body positioned in 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 member such that the valve member remains in the closed position until water pressure pushing against the valve member overcomes the bias of the resilient member, wherein the valve body, rib, valve member and resilient member are configured to fit entirely within the inlet of the sprinkler.