An aspirator air vent valve may include an air vent valve body coupled with an aspirator body and a pipe fitting. The air vent valve body may include an air vent valve air channel defined by an inner wall of the air vent valve body and disposed between the aspirator body and the pipe fitting. The aspirator air vent valve may further include a vent passage defined by a first vent wall and a second vent wall and disposed between an outer wall and the inner wall of the air vent valve body, wherein the vent passage is in fluid communication with the air vent valve air channel. The aspirator air vent valve may further include a plunger coupled with the air vent valve body.

A valve actuation mechanism comprises a housing, an actuation pin rotatably mounted within the housing and at least one torque spring coupling the actuation pin to the housing for biasing the actuation pin from a first, inoperative rotational position towards a second, operative rotational position. The mechanism further comprises an actuation pin retaining element for selectively retaining the actuation pin in its first position, the retaining element being engageable with the actuation pin and the housing when the retaining element is in a retaining position so as to prevent rotation of the actuation pin towards its second position, and selectively disengageable from the housing to permit rotation of the actuation pin towards its second position. A locking element is provided for selectively preventing disengagement of the retaining element from the housing.

A damping valve includes a damping valve body with at least one through-channel, the outlet cross section of which is at least partially covered by at least one valve disk. The at least one valve disk is preloaded by at least two star springs. Each star spring has a support ring and a quantity of radial spring arms. The support rings lie one on top of the other in the installed position. The star springs are layered in opposite orientation such that the spring arms of at least two adjacent star springs face in the same direction with respect to the valve disk, and this star spring package has an anti-rotation element in an assembled position.

A shut-off valve comprising a valve member received in a fluid passageway and rotatable about a rotation axis between open and closed positions, a casing mounted on the valve body and comprising a chamber, a valve actuating assembly mounted on the valve member for rotating the valve member between the open and closed positions and comprising a stem mounted on the valve member about the rotation axis, a blocking member mounted on the stem and a first biasing member configured to bias the valve actuating assembly in the closed position. The shut-off valve further comprising a biasing assembly comprising a second biasing member and a protrusion member, the protrusion member adapted for mating with the mating element of the blocking member for maintaining the valve member in the open position as pressure increases in the chamber. The valve member configured to close when pressure decreases in the chamber.

A pressure compensation device for compensating an internal pressure in a housing of an electrochemical device includes: at least one gas-permeable membrane for gas exchange between an interior of the housing and surroundings of the electrochemical device; and a valve body that can be transferred from a home position resting on a valve seat into a use position remote from the valve seat, the valve body including a gas throughflow opening that is sealed by the gas-permeable membrane.

A fault detector for detecting the occurrence of a rapid pressure rise within electrical equipment. The fault detector has a chamber having an interior, a diaphragm in sealing engagement with the chamber and an aperture providing fluid communication between the interior of the chamber and the external environment of the chamber.

A pressure relief device for a power transformer provided with a tank filled with an insulating liquid, the pressure relief device including: a support flange operatively coupleable with the tank and including a through port coupleable with an opening of the tank; a valve element displaceable between a closed position, at which it obstructs the through port, and an open position, at which it is spaced away from the support flange; a protection cover fixed with the support flange and spaced apart from the support flange and the valve element; first elastic means adapted to urge the valve element in the closed position and contrast a movement of the valve element from the closed position to the open position; and at least a switch device adapted to signal a movement of the valve element from the closed position to the open position. The switch device includes a switch pin reversibly movable between a compressed position and a released position. A movement of the switch pin from the compressed position to the released position is responsive to a movement of the valve element from the closed position to the open position.

A hydraulic arrangement for a vehicle transmission includes a hydraulic pump for providing a system pressure for a first hydraulic system circuit and a lubrication pressure for a second hydraulic lubrication circuit. The arrangement also includes a control valve connected between a pump outlet of the pump and the two hydraulic circuits and has two different switching positions. The control valve, depending on the switching position, acts as a hydraulic connection between the pump and the system circuit or between the pump and the lubrication circuit.

An assembly for and part of a slam-shut safety device. The assembly includes a reset pin and a valve disc operatively connected to the reset pin, the reset pin and the valve disc being movable between a first position, in which the valve disc is adapted to be spaced from a slam-shut valve seat of the slam-shut safety device, and a second position, in which the valve disc is adapted to engage the slam-shut valve seat of the slam-shut safety device. The assembly also includes a reset pin assembly including a reset rod operatively connected to the reset pin, and a reset sleeve arranged to support an end of the reset rod. The assembly further includes a feedback system arranged proximate the reset pin assembly and configured to provide data indicative of whether the reset pin and the valve disc are in the first position or the second position.

A high-pressure fuel pump for a fuel delivery system of an internal combustion engine includes a pressure limiting valve positioned between an outlet and an inlet of the pump. The valve includes a spring-loaded closing element and a closing body that radially holds the closing element in place, and that has a concave receiving portion configured to at least partially receive the closing element. The receiving portion has a radially outer first area with a first opening angle, and a radially inner second area with a second opening angle larger than the first opening angle. The first area and the second area are located outside of a contact region between the closing element and the closing body.