A smart damping control valve having a failsafe mode is provided. The control valve includes a movable valve assembly within a valve housing. The moveable valve assembly includes a shuttle valve concentrically positioned with respect to a spool valve, with the spool valve and the shuttle valve each being axially moveable within a bore in the valve housing. The control valve includes a solenoid assembly having an electromagnetically actuated armature that varies the opening pressure of the movable valve assembly. At a first electrical current, the valve assembly provides a first opening pressure, and at a second electrical current, the valve assembly provides a second opening pressure. The valve assembly provides a third opening pressure, between the first and second opening pressures, in the absence of an electrical current to the solenoid assembly.

A double seat valve including a first closure element that can be brought into sealing contact with a first valve seat, a second closure element that can be brought into sealing contact with a second valve seat, a sensor object coupled to the first closure element, and a sensor apparatus that interacts with the sensor object is disclosed. The sensor apparatus comprises a sensor and an electronic evaluation unit. A manipulator designed to interact with the sensor object interacts with the second closure element. The sensor apparatus is designed for verification of the interaction of the manipulator with the sensor object.

A smart damping control valve having a failsafe mode is provided. The control valve includes a movable valve assembly within a valve housing. The moveable valve assembly includes a shuttle valve concentrically positioned with respect to a spool valve, with the spool valve and the shuttle valve each being axially moveable within a bore in the valve housing. The control valve includes a solenoid assembly having an electromagnetically actuated armature that varies the opening pressure of the movable valve assembly. At a first electrical current, the valve assembly provides a first opening pressure, and at a second electrical current, the valve assembly provides a second opening pressure. The valve assembly provides a third opening pressure, between the first and second opening pressures, in the absence of an electrical current to the solenoid assembly.

The present disclosure relates to a hydraulic fuse comprising: a fuse body defining a plenum, the plenum comprising: an inlet configured to couple to a first fluid location; and an outlet configured to couple to a second fluid location. The hydraulic fuse further comprises a first fuse element arranged to close the inlet, the first fuse element configured to open the inlet when a pressure differential between the first fluid location and the plenum reaches a first threshold; and a second fuse element arranged to close the outlet, the second fuse element configured to open the outlet when a pressure differential between the plenum and the second fluid location reaches a second threshold, wherein the first threshold is higher than the second threshold.

A steam valve according to at least one embodiment of the present disclosure, includes: a valve body that includes a steam flow path through which steam flows, and a valve seat disposed in the middle of the steam flow path and having an opening portion; and a stop valve that includes a valve stem which extends in an axial direction, where an axis extends, and is movable back and forth in the axial direction, and a first valve disc which is fixed to a distal end part of the valve stem and is abutted against the valve seat to close the steam flow path. The valve stem is partitioned into a first valve stem to which the first valve disc is fixed and a second valve stem different from the first valve stem.

A ball valve includes valve seats surrounding a valve ball and a valve housing surrounding the valve seats. A central flow passage extends through the valve seats, the valve ball, and the valve housing. Seals are positioned between a non-vertical bottom wall of each valve seat and corresponding non-vertical end walls of the valve housing. When a fluid pressure is applied to the ball valve in a closed position, one of the valve seats moves away from the valve housing to disengage the seal from the corresponding non-vertical housing end wall. The valve seat's movement provides an equalizing flow passage between the valve seat and the valve housing and into an interior portion of the valve ball, thereby allowing for pressure equalization that prevents deformation of the valve ball. The valve housing is formed by valve seat carriers, a cavity in a valve sub, or a combination thereof.

The present invention discloses a flow regulating push switch conjoined valve, comprising a valve housing, a flow regulation assembly and a push switch assembly. The valve housing has a first chamber and a second chamber which are isolated from each other, a communication channel is disposed between the first chamber and the second chamber, and a first connection pipe and a second connection pipe are devised on the valve housing. The first connection pipe has a first channel which is in communication with the first chamber and the second connection pipe has a second channel which is in communication with the second chamber. The flow regulation assembly is installed in the first chamber for regulating a flow rate of a fluid between the first channel and the communication channel. The push switch assembly is installed in the second chamber for controlling connection and disconnection of a flow path between the second channel and the communication channel.

Modular valve assemblies are disclosed. In embodiments the modular valve assemblies include a first frame and a second frame. The first frame includes a fluid inlet and first mount, and the second frame includes a fluid outlet and a second mount. A connection element extends between the first mount and the second mount. At least a first modular block and a second modular block are disposed on the connection element and position between the first and second frame. The first and second modular blocks may each be rotatable about the connection element between a use position and a maintenance position. In the use position, a composite flow path extends from the fluid inlet, through a first fluid flow path in the first modular block, through a second fluid flow path in the second modular block, and to the fluid outlet. Rotation of the first or second modular block to its maintenance position moves the first or second fluid flow path, respectively, out of the composite flow path.