Abstract: High Integrity Pressure Protecting Systems (HIPPS), wherein the HIPPS has an ON/OFF valve with a housing, wherein the housing has an inlet and an outlet, and a conduit for passage of a fluid from the inlet to the outlet, and with a closure element, wherein in an open position the closure element opens the conduit for allowing the passage, and in a closing position the closure element closes the conduit for inhibiting the passage, and a hydraulic actuator, having a control element that is fixated at the closure element, and a switchable hydraulic supply unit, which in an active state supplies a control face of the control element with a control pressure, and in a passive state releases the control pressure from the control face, a sensor measuring a pressure of the fluid downstream from the outlet, and a logic solver that compares the downstream pressure to a critical value.

Abstract: High Integrity Pressure Protecting Systems (HIPPS), wherein the HIPPS has an ON/OFF valve with a housing, wherein the housing has an inlet and an outlet, and a conduit for passage of a fluid from the inlet to the outlet, and with a closure element, wherein in an open position the closure element opens the conduit for allowing the passage, and in a closing position the closure element closes the conduit for inhibiting the passage, and a hydraulic actuator, having a control element that is fixated at the closure element, and a switchable hydraulic supply unit, which in an active state supplies a control face of the control element with a control pressure, and in a passive state releases the control pressure from the control face, a sensor measuring a pressure of the fluid downstream from the outlet, and a logic solver that compares the downstream pressure to a critical value.

Abstract: A valve with a housing including an inlet opening and an outlet opening for a fluid; a closure element through which a flow of the fluid is controllable; an actuation device including an electric actuator for adjusting a closure cross section of the closure element; a drive housing at which a stator of the electric actuator is fixated, wherein a moveable moving element of the electric actuator is kinematically coupled with the closure element in an inner cavity of the drive housing which is loaded with a pressure from the fluid, wherein the stator is disposed in the inner cavity, and wherein the inner cavity of the drive housing is separated from the fluid through a moveable divider element. In order to use a valve with an actuator disposed in an abrasive fluid the inner cavity of the drive housing is separated from the fluid through a moveable divider element.

Abstract: A valve with a housing including an inlet opening and an outlet opening for a fluid; a closure element through which a flow of the fluid is controllable; an actuation device including an electric actuator for adjusting a closure cross section of the closure element; a drive housing at which a stator of the electric actuator is fixated, wherein a moveable moving element of the electric actuator is kinematically coupled with the closure element in an inner cavity of the drive housing which is loaded with a pressure from the fluid, wherein the stator is disposed in the inner cavity, and wherein the inner cavity of the drive housing is separated from the fluid through a moveable divider element. In order to use a valve with an actuator disposed in an abrasive fluid the inner cavity of the drive housing is separated from the fluid through a moveable divider element.

Abstract: Disclosed is a throttle valve (1), having a housing (2), comprising an inlet opening (3) for a fluid under an inlet pressure, a throttle (4), by means of which the fluid can be throttled to an outlet pressure, and an outlet opening (5) for the fluid, and an actuation element (11) at the outside of the housing (2), a rotatable shaft (13), and a piston (16), which is axially movable within the housing (2) in a tubular throttle cage (15), wherein a rotation of the shaft (13) can be induced by the actuation element (11) and an axial movement of the piston (16) can be induced by the rotation of the shaft (13) and by the axial movement of the piston (16) a throttle cross section of the throttle (4) can be adjusted, For under water application, in particular in oil and gas drilling with large pipe cross sections the throttle valve according to the invention is improved, so that primary magnets are mounted to the actuation element (11, 32), secondary magnets are mounted to the shaft (13), and a roller body screw driv

Abstract: Disclosed is a throttle valve (1,), having a housing (2), comprising an inlet opening (3) for a fluid under an inlet pressure, a throttle (4,), by means of which the fluid can be throttled to an outlet pressure, and an outlet opening (5) for the fluid, and an actuation element (11) at the outside of the housing (2), a rotatable shaft (13), and a piston (16), which is axially movable within the housing (2) in a tubular throttle cage (15), wherein a rotation of the shaft (13) can be induced by the actuation element (11) and an axial movement of the piston (16) can be induced by the rotation of the shaft (13) and by the axial movement of the piston (16) a throttle cross section of the throttle (4) can be adjusted, For under water application, in particular in oil and gas drilling with large pipe cross sections the throttle valve according to the invention is improved, so that primary magnets are mounted to the actuation element (11, 32), secondary magnets are mounted to the shaft (13), and a roller body screw dr