Interval control valve actuator, valve and system

    公开(公告)号:US11873918B1

    公开(公告)日:2024-01-16

    申请号:US17853082

    申请日:2022-06-29

    CPC classification number: F16K31/12 E21B34/063 F16K31/42

    Abstract: An interval control valve actuator includes an electrohydraulic pressure generator and an actuation pressure line extending between the generator and a valve. A hydraulic junction disposed in the actuation pressure line is selectively hydraulically joins the actuation pressure line to a backup pressure line. An interval control valve including a housing, a valve disposed in the housing, an electrohydraulic actuator hydraulically connected to the valve by an actuation pressure line. A hydraulic junction disposed between the electrohydraulic actuator and the valve and a backup pressure line hydraulically connected to the hydraulic junction, the backup pressure line being selectively hydraulically connectable to the actuation pressure line.

    Methods and systems for dual force valve actuation

    公开(公告)号:US11781659B2

    公开(公告)日:2023-10-10

    申请号:US16981114

    申请日:2019-03-21

    Inventor: Klaus Gebauer

    CPC classification number: F16K7/04 F16K7/12 F16K31/12 F16K31/122 F16K31/126

    Abstract: A method for controlling at least one valve provided to a tube in a bioprocess flow system, said method comprising the steps of: —controlling the at least one valve to be in a first state, which is an open state when a flow through the tube should be allowed; —controlling the at least one valve to be in a second state during some parts of a process run in the system, said second state is a closed state were a first closing force is provided; and—controlling the at least one valve to be in a third state during some parts of a process run in the system, said third state is a closed state were a second closing force is provided which is a higher force than the first closing force.

    ACTUATOR, STAGE DEVICE, EXPOSURE DEVICE, INSPECTION DEVICE

    公开(公告)号:US20230272821A1

    公开(公告)日:2023-08-31

    申请号:US18173566

    申请日:2023-02-23

    CPC classification number: F16C29/025 F16K31/12

    Abstract: An actuator includes: a slider driven within a movable range along a predetermined movement direction; a guide that extends in the movement direction to guide the slider and includes a surrounding structure surrounding an outer periphery of the slider and including an opening portion where at least a part thereof is open in a cross section perpendicular to the movement direction; a fluid supply portion that supplies a fluid between the slider and the guide; a slider connecting member that penetrates the opening portion to connect the slider inside the surrounding structure and a driven body outside the surrounding structure; and a guide connecting member that connects edges of the opening portion to each other and is provided at a position where the slider connecting member does not come into contact with the guide connecting member when the slider moves within the movable range.

    VALVE ASSEMBLY AND LIMIT SWITCH ASSEMBLY THEREFOR

    公开(公告)号:US20180252333A1

    公开(公告)日:2018-09-06

    申请号:US15451053

    申请日:2017-03-06

    Abstract: A valve assembly includes a valve, an actuator for opening and closing the valve, and a positioner for controlling the actuator. At least one limit switch assembly is mounted between the positioner and the actuator. The limit switch assembly connects the actuator and positioner so that movement of the actuator valve is conveyed to the positioner through the limit switch assembly. The limit switch assembly is configured to provide a limit signal when the valve is in one or more limit positions. The limit switch assembly has a calibration mechanism for adjusting the one or more limit positions using an input member accessible from outside of the limit switch housing when the limit switch is installed in the valve assembly.

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