A three-way solenoid valve comprising: a valve block including a valve chamber and a first port, a second port, and a third port fluidly communicating with the valve chamber; an armature; a body; a plunger; and a flow path control assembly that is disposed inside the second body and includes a first opening/closing flow path, which allows the first port and the second port to fluidly communicate with each other or to be blocked from each other according to a magnitude of a force applied by the plunger, and a second opening/closing flow path which allows the second port and the third part to fluidly communicate with each other or to be blocked from each other according to the magnitude of the force applied by the plunger.

In accordance with at least one aspect of this disclosure, a system, e.g. a four-way valve system, can include a fluid source to provide fluid to a moveable component to move the moveable component between a first position and a second position. The system can include a four-way valve configured to selectively allow flow from the fluid source to enter either a first side of the moveable component through a first high pressure fluid channel or a second side of the moveable component through a second high pressure fluid channel. A controller can be operatively connected to control the valve to move between a first position and a second position, which in turn adjusts the position of the moveable component between the first position and the second position.

A 3-way solenoid valve and a brake system for vehicle including same. The 3-way solenoid valve includes a valve chamber, valve block, a first operation assembly, a valve seat, and a second operation assembly.

A valve assembly includes an inlet; an outlet; a valve seat between the inlet and the outlet; a valve member which moves between a first valve member position and a second valve member position; and a solenoid subassembly which allows the valve member to move between the first valve member position and the second valve member position. The solenoid subassembly includes a coil having a coil first end and a coil second end; an armature which reciprocates, based on polarity of an electrical current applied to the coil, between a first armature position which allows the valve member to move to the first valve member position and a second armature position which allows the valve member to move to the second valve member position; a first magnet which latches the armature in the first armature position; and a second magnet which latches the armature in the second armature position.

A controller assembly comprises an electromechanical actuator and a single-stage pneumatic flow switch configured to thermally protect the electromechanical actuator by a supply of cooling fluid. The single-stage pneumatic flow switch is movable between a first mode in which the switch is configured to open a cooling fluid flow passage and a second mode in which the switch is configured to close the cooling fluid flow passage. The electromechanical actuator is coupled to a valve movable between an open and a closed configuration.

A 3-way solenoid valve and a brake system for vehicle including same. The 3-way solenoid valve includes a valve chamber, valve block, a first operation assembly, a valve seat, and a second operation assembly.

A multi-way valve includes a control pressure channel, first and second control fluid channels, a valve body in the first and second control fluid channels, and an electrically controlled device having a drive member and an armature. The armature moves back and forth by the drive member between inactive and active positions. Movement of the armature from the inactive to the active position displaces the valve body arrangement to an active position, closing the first and opening the second control fluid channel is open. The electrically controlled device includes a drive body connected to the armature and a first spring member between the armature and the drive body. The valve body arrangement is biased towards the inactive position by a second spring member. The armature in the inactive position is biased towards the active position by a third spring member. Also disclosed is an actuator including the valve.

A controller assembly comprises an electromechanical actuator and a single-stage pneumatic flow switch configured to thermally protect the electromechanical actuator by a supply of cooling fluid. The single-stage pneumatic flow switch is movable between a first mode in which the switch is configured to open a cooling fluid flow passage and a second mode in which the switch is configured to close the cooling fluid flow passage. The electromechanical actuator is coupled to a valve movable between an open and a closed configuration

Disclosed is a multi-way valve including a control pressure channel, a first control fluid channel between a first opening and the control pressure channel, a second control fluid channel between a second opening and the control pressure channel, a valve body in the first and second control fluid channels, and an electrically controlled device having a drive member and an armature. The armature moves axially according to the drive member between inactive and active positions. Movement of the armature from inactive to active displaces the valve body arrangement to an active position where the first control fluid channel is closed and the second control fluid channel is open. The device further includes a drive body connected to the armature and a spring between the armature and drive body. The drive body abuts the valve body and the spring in a compressed state when the armature is in active position.

A cold gas thruster having a two-stage solenoid is provided. Pressurized gas from the inlet flows to the back side of the piston to hold the piston closed. The pressure is maintained by a check ball held by the solenoid armature. When the solenoid is energized, the armature allows the check ball to move to bleed off the pressure holding the piston closed. The piston moves away from its seat and allows the pressurized gas to flow to the outlet creating thrust. When the solenoid coil is de-energized, the check ball is forced against its seat, which blocks the escape of pressure on the back side of the piston, so that it can re-pressurize back up to the inlet pressure. This creates a force imbalance and moves the piston to close the valve and stop the thrust. Different nozzles can be used for different thrust profiles without changing the solenoid.