Abstract: A valve controller for a valve that comprises an actuator mechanically coupled to at least one flow controlling element. The valve controller comprises at least one pilot valve for controlling the position of the flow controlling element(s) by the actuator. The valve controller comprises a position sensor for obtaining a position signal indicative of the position of one of said at least one flow controlling element. The valve controller is configured to execute a configuration phase comprising establishing a pilot valve integer corresponding to number of pilot valves, and determining a tolerance criterion for the position signal based on the pilot valve integer. A valve arrangement comprising the valve controller and a valve. A method of controlling a valve comprising the configuration phase.

Abstract: A valve controller for a valve that comprises an actuator mechanically coupled to at least one flow controlling element. The valve controller comprises at least one pilot valve for controlling the position of the flow controlling element(s) by the actuator. The valve controller comprises a position sensor for obtaining a position signal indicative of the position of one of said at least one flow controlling element. The valve controller is configured to execute a configuration phase comprising establishing a pilot valve integer corresponding to number of pilot valves, and determining a tolerance criterion for the position signal based on the pilot valve integer. A valve arrangement comprising the valve controller and a valve. A method of controlling a valve comprising the configuration phase.

Abstract: A valve controller for controlling a valve and a valve comprising the valve controller are disclosed. The valve has an actuator and a flow controlling unit. The valve controller is configured to execute a setup process and comprises a first pilot valve that can energize the actuator by allowing a first pressurized fluid to enter the actuator and de-energizing the actuator by allowing the fluid to leave the actuator. The valve controller further has an input device by which the setup process can be initiated, and a memory unit for storing setup parameter values. The setup process comprises: determining parameter values indicative of the functionality of at least one of the valve controller, the actuator and the flow controlling unit, and storing the parameter values as setup parameter values in the memory unit.

Abstract: A valve controller for controlling a valve and a valve comprising the valve controller are disclosed. The valve comprises an actuator and a flow controlling unit. The valve controller comprises equipment for controlling the function of at least one of the actuator and the flow controlling unit. The valve controller is further configured to obtain one or more first parameter values indicative of a functionality of the equipment at startup of the valve controller. The valve controller is configured to monitor the equipment during operation of the valve controller for determining one or more second parameter values indicative of the functionality of the equipment and determining if a change in functionality of the equipment has occurred based on a comparison of the one or more second parameter values with the one or more first parameter values.

Abstract: A valve controller for controlling a valve and a valve comprising the valve controller are disclosed. The valve comprises an actuator and a flow controlling unit. The valve controller comprises equipment for controlling the function of at least one of the actuator and the flow controlling unit. The valve controller is further configured to obtain one or more first parameter values indicative of a functionality of the equipment at startup of the valve controller. The valve controller is configured to monitor the equipment during operation of the valve controller for determining one or more second parameter values indicative of the functionality of the equipment and determining if a change in functionality of the equipment has occurred based on a comparison of the one or more second parameter values with the one or more first parameter values.

Abstract: A valve controller for controlling a valve and a valve comprising the valve controller are disclosed. The valve has an actuator and a flow controlling unit. The valve controller is configured to execute a setup process and comprises a first pilot valve that can energize the actuator by allowing a first pressurized fluid to enter the actuator and de-energizing the actuator by allowing the fluid to leave the actuator. The valve controller further has an input device by which the setup process can be initiated, and a memory unit for storing setup parameter values. The setup process comprises: determining parameter values indicative of the functionality of at least one of the valve controller, the actuator and the flow controlling unit, and storing the parameter values as setup parameter values in the memory unit.

Abstract: Actuator for a seat valve or a butterfly valve which is of the type that is normally closed (NC) or normally open (NO), and also has a cylinder and a piston being held in the normal position by a spring. The spring includes a closed space with a pressurized fluid, and the actuator further has at least a top unit, with two or more connections for a pressurized fluid. The actuator is with one of the connections in the top unit that is connected to the inside of the cylinder through one or more openings at one end of the cylinder and another connection is connected to the inside of the cylinder through one or more openings at the other end of the cylinder. The top unit is designed to allow the connections to be interchanged by changing the position of the top unit, e.g. by turning the top unit 180 degrees around an axis corresponding to or parallel to the axis of the piston and cylinder.

Abstract: A monitoring arrangement for a liquid ejection apparatus capable of ejecting liquid in a pattern on an interior surface of a tank, the monitoring arrangement comprising a sensor unit that generates a signal indicative of liquid coming into contact with the interior surface of the tank, and a processing unit configured to: receive the signal; retrieve a reference property that is indicative of liquid coming into contact with the interior surface; register, during a measuring period when the fluid nozzle ejects liquid, at least one current property of the signal; compare the current property with the reference property; and initiate, if the current property deviates from the reference property beyond a predetermined level, a message indicative of the deviation.

Abstract: A valve comprising a valve housing with a valve bonnet, an inlet opening and an outlet opening, the valve bonnet having a passage for a valve stem, the passage having a sidewall and the valve stem comprising a valve disk for closing the valve by bringing the valve disk in contact with a valve seat in the valve housing, the passage in the valve bonnet comprising at least a first section with a first cross sectional area and a second section with a second cross sectional area that is smaller than the first cross sectional area. The sidewall in the passage is in direct contact with the valve stem at the second section with the second cross sectional area.

Abstract: A method for process optimization for a valve (1) comprising a valve seat (5) arranged in a valve housing (3) between an inlet (7) and an outlet (8), comprising a valve disk (4) which is connected to an actuating rod (10) and comprising an actuating device (2) which acts on the actuating rod (10), by which means the valve disk (4) is brought into a closed position (23) for closing the valve (1) and is pressed onto the valve seat (5) and for opening the valve (1) is raised from the valve seat (5) and brought into an opening position (26), wherein fluid flows through the valve (1) for carrying out the method in the course of cleaning, can be improved with regard to a better cleaning effect in remote regions (14, 15, 16) of the interior (17) of the valve housing (3) whereby during cleaning the valve disk (4) is brought into at least one intermediate position (24, 24, 31) between the closed position (23) and the open position (26).

Abstract: In order to improve a drive arrangement (15) for valve devices (1) comprising a closing member (3), comprising a movable drive element (6) for making an operative connection with the closing member (3), pre-tensioning means for exerting a pre-tensioning force on the drive element (6) in order to hold the closing member (3) in a base position, preferably closed position, against the working forces acting on the closing member (3), and driving means (17, 21) to move the drive element (6) from the base position against the pre-tensioning force in the direction of the working forces, with a view to the disadvantages of the known drive arrangements, in particular in order to reduce the weight, it is proposed that the pre-tensioning means comprises a compressible fluid, preferably compressed air (21), enclosed in a pre-tensioning container (16), with a static pressure for producing the pre-tensioning force.

Abstract: A valve comprising a valve housing with a valve bonnet, an inlet opening and an outlet opening, the valve bonnet having a passage for a valve stem, the passage having a sidewall and the valve stem comprising a valve disk for closing the valve by bringing the valve disk in contact with a valve seat in the valve housing, the passage in the valve bonnet comprising at least a first section with a first cross sectional area and a second section with a second cross sectional area that is smaller than the first cross sectional area. The sidewall in the passage is in direct contact with the valve stem at the second section with the second cross sectional area.

Abstract: Actuator (1) for a seat valve or a butterfly valve which is of the type that is normally closed (NC) or normally open (NO), and also contains a cylinder (3) and a piston being held in the normal position by a spring. The spring virtually consists of a closed space with a pressurised fluid, and the actuator further consists of at least a top unit (7), with two or more connections (12, 13) for a pressurised fluid. The actuator is with one of the connections in the top unit that further is connected to the inside of the cylinder through one or more openings at one end of the cylinder and another connection is connected to the inside of the cylinder through one or more openings at the other end of the cylinder. The top unit is with a design allowing the connections to be interchanged by changing the position of the top unit, e.g. by turning the top unit 180 degrees around an axis corresponding to or parallel to the axis of the piston and cylinder.

Abstract: An actuator rod position indication device is described, where a unit having a separate enclosing housing on one surface of said housing has mounted a magnetic field sensor, such that a magnet provided on an actuator rod's free end will be moved substantially linearly closer to and further from said sensor during operation of the actuator, where the sensor detects the magnetic field strength between the magnet on the actuator rod and the sensor and uses this information as input in a processor, comprising a storage, in which storage pre-defined activation values are stored, such that when the input corresponds to one of the stored values, an output specific to that value is generated.

Abstract: In order to improve a drive arrangement (15) for valve devices (1) comprising a closing member (3), comprising a movable drive element (6) for making an operative connection with the closing member (3), pre-tensioning means for exerting a pre-tensioning force on the drive element (6) in order to hold the closing member (3) in a base position, preferably closed position, against the working forces acting on the closing member (3), and driving means (17, 21) to move the drive element (6) from the base position against the pre-tensioning force in the direction of the working forces, with a view to the disadvantages of the known drive arrangements, in particular in order to reduce the weight, it is proposed that the pre-tensioning means comprises a compressible fluid, preferably compressed air (21), enclosed in a pre-tensioning container (16), with a static pressure for producing the pre-tensioning force.

Abstract: A method for process optimisation for a valve (1) comprising a valve seat (5) arranged in a valve housing (3) between an inlet (7) and an outlet (8), comprising a valve disk (4) which is connected to an actuating rod (10) and comprising an actuating device (2) which acts on the actuating rod (10), by which means the valve disk (4) is brought into a closed position (23) for closing the valve (1) and is pressed onto the valve seat (5) and for opening the valve (1) is raised from the valve seat (5) and brought into an opening position (26), wherein fluid flows through the valve (1) for carrying out the method in the course of cleaning, can be improved with regard to a better cleaning effect in remote regions (14, 15, 16) of the interior (17) of the valve housing (3) whereby during cleaning the valve disk (4) is brought into at least one intermediate position (24, 24, 31) between the closed position (23) and the open position (26).

Abstract: The invention relates to a double-seat valve, particularly for aseptic applications, having at least two line connections (3, 4, 7), between which two annular valve seats (11, 12) are disposed coaxially with one another and in series, having two closers (8, 9), which are axially closable independently of one another and which in the closed state cooperate sealingly with the valve seats (11, 12) and between them enclose a hollow chamber (34), and having at least one cleaning connection (35, 36), discharging into the hollow chamber (34), for introducing a cleaning medium.