Abstract: A valve assembly is provided. The valve assembly comprises a housing having an inlet, a first outlet, and a passageway extending therebetween, the passageway having a first inner diameter at the inlet and a second inner diameter at the first outlet, a first poppet valve disposed in, and adapted to selectively seal, the inlet, a second poppet valve disposed in, and adapted to selectively seal, the first outlet, the second poppet valve coupled to the first poppet valve, and a biasing member coupled to the second poppet valve, the biasing member adapted to exert a force sealing the second poppet valve.

Abstract: A valve assembly is provided. The valve assembly comprises a housing having an inlet, a first outlet, and a passageway extending therebetween, the passageway having a first inner diameter at the inlet and a second inner diameter at the first outlet, a first poppet valve disposed in, and adapted to selectively seal, the inlet, a second poppet valve disposed in, and adapted to selectively seal, the first outlet, the second poppet valve coupled to the first poppet valve, and a biasing member coupled to the second poppet valve, the biasing member adapted to exert a force sealing the second poppet valve.

Abstract: A diaphragm is provided that includes a plurality of zonal portions that define reinforced and non-reinforced areas of the diaphragm. A first zonal portion extends from a marginal edge portion toward a central portion and is formed of a fabric material. A second zonal portion extends from the first zonal portion toward the central portion and is formed of an elastomer. A third zonal portion defines the central portion and is formed of a fabric material. The combination of reinforced and non-reinforced portions provides for a decrease in the radial tension (spring rate) of the diaphragm and helps prevent undesired changes to the flow control valve flow setpoint.

Abstract: A hydraulically actuated pneumatic regulator is configured to receive hydraulic fluid from a hydraulic source and pressurized air from a pressurized air source to control air pressure downstream of the pneumatic regulator. The hydraulically actuated pneumatic regulator includes a valve element, an actuator, and pneumatic-to-hydraulic servo. The actuator is adapted to receive one or more pneumatic control signals supplied by the pneumatic-to-hydraulic servo, and is operable, in response to the pneumatic control signals, to control the air pressure downstream of the pneumatic regulator.

Abstract: A valve assembly is provided that includes a flowbody, a valve element movably disposed within the flowbody, and a magnetically-energized seal mechanism. The magnetically-energized seal mechanism includes a wiper seal carried by one of the flowbody and the valve element and movable between a retracted position and an extended position. A first magnetic element is fixedly coupled to the wiper seal, and a second magnetic element is fixedly coupled to one of the flowbody and the valve element. The second magnetic element magnetically repels the first magnetic element to bias the wiper seal toward the extended position.

Abstract: A diaphragm is provided that includes a plurality of zonal portions that define reinforced and non-reinforced areas of the diaphragm. A first zonal portion extends from a marginal edge portion toward a central portion and is formed of a fabric material. A second zonal portion extends from the first zonal portion toward the central portion and is formed of an elastomer. A third zonal portion defines the central portion and is formed of a fabric material. The combination of reinforced and non-reinforced portions provides for a decrease in the radial tension (spring rate) of the diaphragm and helps prevent undesired changes to the flow control valve flow setpoint.

Abstract: A temperature sensitive resettable linear actuator includes a linear actuator housing and a support shaft. The support shaft has a first end portion configured for longitudinal movement within the linear actuator housing and a second end portion extending from the linear actuator housing. The support shaft is configured to translate between an extended position and a retracted position. A shape memory alloy device is positioned within the linear actuator housing and coupled to the support shaft for moving the support shaft from the extended position to the retracted position when the shape memory alloy device reaches a predetermined temperature.

Abstract: A resettable thermal valve for controlling the flow of a fluid therethrough comprises a valve assembly housing having a fluid passageway therethrough and a valve coupled to the valve assembly housing and disposed at least partially within the fluid passageway. The valve is moveable between an open position and a closed position and is coupled to a resettable, temperature sensitive linear actuator assembly. The linear actuator assembly enables the valve to move from the open position to the closed position when it is heated to a predetermined temperature.