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 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.