A valve device having a valve housing (10), in which fluid ports (P, A, T) are provided and in which at least one valve piston (12, 14) can be moved longitudinally, which valve piston either separates at least two of the fluid ports (P, A, T) from one another or interconnects them as a function of its travel position, and having at least one latching device (16, 18) for each valve piston (12, 14) for the detachable fastening of the respective valve pistons (12, 14) in one of its travel positions, which latching device has at least one latching means (20), which can be brought into a latching position (22), which is characterized in that, as part of the respective latching devices (16, 18) for detachably fastening the respective valve pistons (12, 14), at least one control body (24) that can be moved independently of the respective valve pistons (12, 14) is provided, which control body is set up such that, in at least one blocking position, it prevents the relevant latching means (20) disposed in the latching position (22) from leaving the latching position (22) by blocking the latching means (20) is disclosed.

A valve device having a valve housing (10), in which fluid ports (P, A, T) are provided and in which at least one valve piston (12, 14) can be moved longitudinally, which valve piston either separates at least two of the fluid ports (P, A, T) from one another or interconnects them as a function of its travel position, and having at least one latching device (16, 18) for each valve piston (12, 14) for the detachable fastening of the respective valve pistons (12, 14) in one of its travel positions, which latching device has at least one latching means (20), which can be brought into a latching position (22), which is characterized in that, as part of the respective latching devices (16, 18) for detachably fastening the respective valve pistons (12, 14), at least one control body (24) that can be moved independently of the respective valve pistons (12, 14) is provided, which control body is set up such that, in at least one blocking position, it prevents the relevant latching means (20) disposed in the latching position (22) from leaving the latching position (22) by blocking the latching means (20) is disclosed.

In various implementations, an electronic actuator may be coupled to a valve to provide the ability to shut off anhydrous ammonia flow through the valve (e.g., in emergencies). The valve may be coupled to anhydrous ammonia tanks, such as nurse tanks and/or storage tanks. The electronic actuator may include a handle and a bracket. The handle and the bracket may include at least two attractive components that are magnetically attracted to each other upon application of an electric current and the valve may be open. When the electric current is cut, the attractive components of the handle and the bracket may not be magnetically attracted to each other and the valve may be shut off. A controller (e.g., a switch) may be coupled to the electronic actuator to allow control of the electric signal to the electronic actuator.

In various implementations, an electronic actuator may be coupled to a valve to provide the ability to shut off anhydrous ammonia flow through the valve (e.g., in emergencies). The valve may be coupled to anhydrous ammonia tanks, such as nurse tanks and/or storage tanks. The electronic actuator may include a handle and a bracket. The handle and the bracket may include at least two attractive components that are magnetically attracted to each other upon application of an electric current and the valve may be open. When the electric current is cut, the attractive components of the handle and the bracket may not be magnetically attracted to each other and the valve may be shut off. A controller (e.g., a switch) may be coupled to the electronic actuator to allow control of the electric signal to the electronic actuator.

A proportional solenoid, capable of linear motion, includes an electromagnetic valve device including a solenoid assembly having a mobile core, a push rod connecting the solenoid mobile core to a valve plunger, and a device operable to apply a controlled friction force to hold the mobile core in an intermediate position. The friction force applied by the friction device is greater than the motive forces generated by the solenoid.

A proportional solenoid, capable of linear motion, includes an electromagnetic valve device including a solenoid assembly having a mobile core, a push rod connecting the solenoid mobile core to a valve plunger, and a device operable to apply a controlled friction force to hold the mobile core in an intermediate position. The friction force applied by the friction device is greater than the motive forces generated by the solenoid.

The invention related to a safety device for detachably locking the output member of a linear drive, comprising: a coupling rod coupled with the output element of the linear drive, a blocking unit, linearly movably penetrated by the coupling rod which is relatively movable with respect to the housing between a locking position blocking the stroke of the coupling rod and a release position enabling the linear movement of the coupling rod, a spring device for prestressing the blocking unit in the blocking position, a locking device for locking the blocking unit in the release position, wherein the locking device has locking rolling elements accommodated in the housing and a support sleeve which is linearly movably penetrated by the coupling rod, an electromagnet device that holds the support sleeve in the support position against the recoil force of at least one trigger spring or device.

The invention related to a safety device for detachably locking the output member of a linear drive, comprising: a coupling rod coupled with the output element of the linear drive, a blocking unit, linearly movably penetrated by the coupling rod which is relatively movable with respect to the housing between a locking position blocking the stroke of the coupling rod and a release position enabling the linear movement of the coupling rod, a spring device for prestressing the blocking unit in the blocking position, a locking device for locking the blocking unit in the release position, wherein the locking device has locking rolling elements accommodated in the housing and a support sleeve which is linearly movably penetrated by the coupling rod, an electromagnet device that holds the support sleeve in the support position against the recoil force of at least one trigger spring or device.

A control unit for pneumatic actuation of a cylinder, in particular an active creel of a textile-processing machine or a cabling machine, having a compressed air inlet for connecting a compressed air supply, a working air outlet for operating the cylinder, which acts at least on one side, a valve unit arranged between the compressed air inlet and the working air outlet, and an operating element for opening the valve unit to trigger a lifting movement of the cylinder. In order to provide a control unit for pneumatic actuation of an active creel, the actuation of the creel being particularly simple by the control unit, so that an operator can use the creel more easily, quickly and safely, and in addition the creel is protected from damage by incorrect operation, the control unit for achieving a self-retaining valve function, in which the lifting movement of the cylinder is fully executed with a single and/or brief actuation of the operating element, and for the control unit is connected to an end position sensor of the cylinder such that, when the end position sensor is activated, the valve unit is closed and/or the cylinder connected to the working air outlet is automatically depressurized when or after an end position is reached.

In various implementations, an electronic actuator may be coupled to a valve to provide the ability to shut off anhydrous ammonia flow through the valve (e.g., in emergencies). The valve may be coupled to anhydrous ammonia tanks, such as nurse tanks and/or storage tanks. The electronic actuator may include a handle and a bracket. The handle and the bracket may include at least two attractive components that are magnetically attracted to each other upon application of an electric current and the valve may be open. When the electric current is cut, the attractive components of the handle and the bracket may not be magnetically attracted to each other and the valve may be shut off. A controller (e.g., a switch) may be coupled to the electronic actuator to allow control of the electric signal to the electronic actuator.