A rotary valve has a valve plug that is rotatable in a valve body about a rotational axis. Surface features of the valve plug and surface features of the valve body cooperate to provide a bearing by which the valve plug is rotatably supported with respect to the valve body. In addition, each of the valve plug and the valve body include a plurality of annular projections that encircle the plain bearing and axially overlap one another so as to form a labyrinth that surrounds the bearing. The labyrinth forms a fluid path that collects abrasive particles suspended in the fluid passing through the valve, whereby wear of the valve is reduced.

A rotary valve has a valve plug that is rotatable in a valve body about a rotational axis. Surface features of the valve plug and surface features of the valve body cooperate to provide a bearing by which the valve plug is rotatably supported with respect to the valve body. In addition, each of the valve plug and the valve body include a plurality of annular projections that encircle the plain bearing and axially overlap one another so as to form a labyrinth that surrounds the bearing. The labyrinth forms a fluid path that collects abrasive particles suspended in the fluid passing through the valve, whereby wear of the valve is reduced.

Embodiments of an equalizing device for use with a safety valve and a safety valve are provided herein. In one embodiment, the equalizing device includes at least a tubular having a central bore extending axially there through, the tubular having a ball seat. The equalizing device may further include a ball positioned proximate the ball seat, the ball configured to move from a first position engaged with the ball seat to a second position disengaged from the ball seat to equalize pressure across the safety valve, and an arced ring positioned radially outside the ball, the arced ring configured to keep the ball engaged with the ball seat when in the first position and maintain the ball radially outside the ball seat when in the second position.

Disclosed is a gasket for a ball valve including: a valve body; a ball rotatable housed in the valve body; a first and a second seat positioned inside the valve body and housing the ball; and a seal of the type including a first and a second gasket interposed between the first and the second seat and the ball. Each gasket is a one-piece composite gasket and includes at least a first layer and a second layer made of thermoplastic materials, where the hardness, tensile strength and coefficient of friction values are different between the first and second layer, and where the first layer has lower values and coacts in a fluid-tight manner directly with the ball, while the second layer has higher values, normally acts as support for the first layer and coacts in a fluid-tight manner with the ball only upon reaching given operating conditions.

A valve for a fluid system of a vehicle having a valve housing having a plurality of valve housing openings, a valve body arranged in the valve housing so as to be rotatable about an axis of rotation and having at least one flow-conducting connecting channel for the flow-conducting connection of at least two valve housing openings of the plurality of valve housing openings, a valve seal, arranged between the valve housing and the valve body and having valve seal openings corresponding to the valve housing openings, a valve drive for the automatic rotation of the valve body about the axis of rotation, and a plurality of connecting pieces, corresponding to the valve housing openings, for the flow-conducting connection of the valve to the rest of fluid system.

A control valve includes: a second inner circumferential portion capable of holding a first spring, in a first communication passage provided at a first discharge opening of a housing; and a recessed portion recessed in a radial direction, at a position that is a part of a region in a circumferential direction of the second circumferential portion and overlaps a second communication passage opening in a biasing direction of the first spring. Therefore, when inserting the first spring into the first communication passage, it is possible to hold the first spring with the inner circumferential surface of the second inner circumferential portion. Consequently, the first spring is appropriately mounted in the second circumferential portion, thereby preventing a mounting defect of the first spring.

A fluid mixing assembly (100) comprising a body (102) having a discharge outlet (114) for discharging fluid; a fluid mixing device (104) disposed in the body (102) and in fluid communication with the discharge outlet (114), the fluid mixing device (104) having an adjusting member (122) adjustable about a mixing adjusting axis (124) and configured to assist in controlling mixing of fluids in the fluid mixing device (104); a first isolator (132) in fluid communication with the fluid mixing device (104) and configured to be coupled in fluid communication to a first source of fluid, the first isolator (132) having an adjusting member (140) adjustable about a first isolator adjusting axis (138) and configured to control a flow of fluid through the first isolator (132); and a second isolator (144) in fluid communication with the fluid mixing device (104) and configured to be coupled in fluid communication to a second source of fluid, the second isolator (144) having an adjusting member (152) adjustable about a second isolator adjusting axis (150) and configured to control a flow of fluid through the second isolator (152). The first isolator (132) and the second isolator (144) are disposed relative to the fluid mixing device (104) such that the mixing adjusting axis (124), the first isolator adjusting axis (138), and the second isolator adjusting axis (150) extend substantially in a common direction.

A valve unit includes an actuator, a first valve and a second valve. The first/second valve includes a first/second valve housing and a first/second valve body. The first/second valve body is rotatably arranged in the first/second valve housing. The two valves are arranged coaxially to one another and rotatable about a common adjusting axis. The actuator is non-releasably coupled to the first valve body and releasably coupled to the second valve body via the first valve body. The first valve body is rotatable in a first and second direction of rotation with the actuator. The second valve body in the coupled state is co-rotatable with the first valve body in the first/second direction of rotation and in the decoupled state is not co-rotatable with the first valve body at least in the second direction of rotation. In addition, a method for adjusting the valve unit is provided.

A valve unit includes an actuator, a first valve and a second valve. The first/second valve includes a first/second valve housing and a first/second valve body. The first/second valve body is rotatably arranged in the first/second valve housing. The two valves are arranged coaxially to one another and rotatable about a common adjusting axis. The actuator is non-releasably coupled to the first valve body and releasably coupled to the second valve body via the first valve body. The first valve body is rotatable in a first and second direction of rotation with the actuator. The second valve body in the coupled state is co-rotatable with the first valve body in the first/second direction of rotation and in the decoupled state is not co-rotatable with the first valve body at least in the second direction of rotation. In addition, a method for adjusting the valve unit is provided.

A modular valve system having fixed valve ports with frame openings on the exterior of each port. Corresponding connectors or plugs are designed to fit within the valve ports and be locked in place by a clip passing through the framed openings and around the connector or plug. The internal valve component may be electrically or mechanically controlled. The modular valve system may be connected to a vehicle coolant system to control fluid flow to a heat exchanger or bypassing the heat exchanger.