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US 5,257,646 AGranted
O-ring damped regulator
AssigneeNelson Irrigation Corporation
InventorLarry P. Meyer
Life of this patent
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AssigneeNelson Irrigation Corporation
InventorLarry P. Meyer
Estimating the term…
A flow through fluid pressure regulator includes a spring biased plunger which is normally biased away from a plunger seat in the direction of fluid flow to provide maximum flow under normal conditions. In the event of a pressure surge, the movement of the plunger in the opposite direction to decrease flow is controlled by a damper. Specifically, the plunger is formed with a radially outwardly facing groove or damper chamber at its downstream end, and into which a resilient O-ring is loosely fitted. This downstream end of the plunger moves within a reduced diameter bore portion of the regulator housing which, in turn, communicates with a diaphragm chamber formed in a larger diameter portion of the housing. The diaphragm chamber surrounds the plunger and is further defined by a flexible diaphragm fixed at an inner radial edge to the plunger and at an outer radial edge to a stationary sleeve in the housing. The outer diameters of the radially outwardly extending flanges which form the O-ring groove or damper chamber, and the loose fit of the O-ring within the groove, permit water to flow past the groove and into the diaphragm chamber in a controlled manner. In an alternative arrangement, the damper chamber and O-ring are located in the housing surrounding the plunger.
A fluid pressure regulator comprising:
In a fluid pressure regulator comprising a housing having a fluid inlet at one end thereof and a fluid outlet at an opposite end thereof, a plunger slidable in said housing, a seat adjacent one end of said plunger and a diaphragm chamber adjacent the other end of said plunger, said diaphragm chamber being defined in part by said opposite end of said housing, another end of said plunger and a diaphragm connected therebetween, the improvement comprising a damper chamber at the other end of said plunger, said damper chamber including a radially oriented annular groove having a resilient, annular damper element disposed therein for regulating flow into and out of said diaphragm chamber.
A fluid pressure regulator comprising a housing having a first fluid passageway extending through said housing from an inlet end thereof to an outlet end thereof;
In a fluid pressure regulator comprising a housing, a plunger slidable in said housing, a seat adjacent one end of said plunger and a diaphragm chamber adjacent the other end of said plunger, said diaphragm chamber being defined in part by said other end of said housing, another end of said plunger and a diaphragm connected therebetween, the improvement comprising a damper chamber at the other end of said plunger, said damper chamber being formed in said housing and having an O-ring disposed in said damper chamber for regulating flow into and out of said diaphragm chamber.
In a fluid pressure regulator comprising a housing, a plunger slidable in said housing, a seat adjacent one end of said plunger and a diaphragm chamber adjacent the other end of said plunger, said diaphragm chamber being defined in part by said other end of said housing, another end of said plunger and a diaphragm connected therebetween, the improvement comprising a damper chamber at the other end of said plunger, said damper chamber having a damper element therein for regulating flow into and out of said diaphragm chamber, and wherein a bleed groove is provided to communicate between said damper chamber and a location in said housing downstream thereof.
Dependencies are inferred from the claim text.