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US 5,687,949 AGranted
Gas flow regulator valve
AssigneeControls Company of America
InventorsSander G. Dukas, Kevin S. Bailey, Robert N. Cooper, Michael D. Heck
Life of this patent
Estimating the term…
Abstract
An improved fluid control valve assembly employing a needle valve integrally formed on a non-rotating valve stem includes a metering orifice for engaging and forming a fluid seal with the valve needle, and a generally radially extending end face on the valve stem for engaging an opposing wall surface acting to positively stop the valve stem upon fully closing the valve and forming a seal between the metering orifice and valve needle to thereby avoid excessive loads and wear between the metering orifice and valve needle.
Claims13
A fluid control valve assembly comprising
- a valve body having a bore formed therein terminating in an end wall and a counterbore coaxial with said bore and having internal threads formed therein,
- a valve guide having a cylindrical valve chamber formed therein, said valve guide having first and second external thread means thereon with said first external threads engaging the internal threads in said counterbore for mounting said valve guide on said valve body,
- an inlet port in said valve body communicating with said bore,
- an outlet port in said valve body,
- a fluid passage coaxial with said valve chamber and said bore extending from said end wall and communicating with said outlet port,
- a non-rotating valve stem mounted in said valve guide chamber for axial movement therein, said valve stem having an outer end extending outwardly from said valve guide and an inner end having a substantially radial face and a valve needle integrally formed on and projecting axially from said substantially radial face coaxially with said valve chamber and said valve stem,
- a valve seat mounted within said valve chamber, said valve seat having a first surface complementary to and engaging said end wall and a second generally radial surface disposed in opposition to said substantially radial face,
- a metering orifice formed in and extending through said valve seat in coaxial relation with said valve stem and said valve needle, said metering orifice communicating with said fluid passage and being dimensioned to receive and cooperate with said needle valve to provide flow control through the valve from said inlet port to said outlet port when said valve stem is moved from the closed position and to engage and provide a seal with the valve needle when the valve stem is in the closed position, and
- actuator wheel means axially fixed on the outer end of said valve stem for substantially free rotation thereon, said actuator wheel means including internal thread means engaging and cooperating with said second external thread means on said valve guide whereby rotation of the actuator wheel means will produce axial movement of the valve stem to move the valve stem between the open and closed positions.
6 more elements
A fluid control valve assembly comprising
- a valve body having a bore formed therein terminating in the valve body, and a counterbore coaxial with said bore and having internal threads formed therein,
- a valve guide having a cylindrical valve chamber formed therein, said valve guide having first and second external thread means formed thereon with said first external thread means engaging the internal threads in said counterbore for mounting said valve guide on said valve body and having an open inner end disposed within said bore,
- an inlet port in said valve body communicating with said bore,
- an outlet port in said valve body,
- a non-rotating valve stem mounted in said valve guide chamber for axial movement therein, said valve stem having an outer end extending outwardly from said valve guide and an inner end having a substantially radial face and a valve needle integrally formed on and projecting axially from said substantially radial face coaxially with said valve chamber and said valve stem,
- a valve seat having a generally radial surface disposed in opposition to said radial face,
- a metering orifice formed in and extending through said valve seat in coaxial relation with said valve stem and said valve needle, said metering orifice providing fluid communication between said valve chamber and said outlet and being dimensioned to receive and cooperate with said needle valve to provide flow control through the valve from said inlet port to said outlet port when said valve stem is moved from the closed position and to engage and provide a seal with the valve needle when the valve stem is in the closed position, and
- actuator wheel means axially fixed on the outer end of said valve stem for substantially free rotation thereon, said actuator wheel means including internal thread means engaging and cooperating with said second external thread means on said valve guide whereby rotation of the actuator wheel means will produce axial movement of the valve stem to move the valve stem between the open and closed positions,
- said generally radial surface of said valve seat engaging and cooperating with said substantially radial face to provide a positive stop for said valve stem when the valve is in the closed position.
6 more elements
Dependencies are inferred from the claim text.