A valve fitting includes a fitting body defining a fitting passageway, supply and working ports in fluid communication with the fitting passageway, a supply port coupler operable to connect the supply port with an associated feed port coupler providing a pressurized fluid, a working port coupler operable to connect the working port with an associated tire of a tire assembly of an associated work vehicle, a supply valve moveable in the fitting passageway between a first position closing the fitting passageway from the supply port and a second position opening the fitting passageway to the supply port, a biasing assembly biasing the supply valve towards the first position, and an actuator assembly comprising an actuator member operable to urge the supply valve towards the second position against the bias of the biasing assembly in response to the associated feed port coupler being connected with the supply port coupler.

Methods and apparatus are disclosed for a coupling nozzle for cryogenic fluid. A coupling nozzle includes a flow body. The coupling nozzle includes a mount, a flow control assembly, and a pneumatic cylinder. The pneumatic cylinder includes a cylinder body and a shaft. The shaft is coupled to and configured to actuate the flow body. The coupling nozzle includes a first locking mechanism coupled to the mount and configured to secure the coupling nozzle to a receptacle in a locked position. When the first locking mechanism is in the locked position, the shaft is configured to actuate the flow control assembly. The coupling nozzle includes a redundant locking mechanism including one or more feet and a lock. The one or more feet are configured to engage the lock to prevent the first locking mechanism from transitioning from the locked position when the shaft is in the extended position.

Methods and apparatus are disclosed for a coupling nozzle for cryogenic fluid. A coupling nozzle includes a flow body. The coupling nozzle includes a mount, a flow control assembly, and a pneumatic cylinder. The pneumatic cylinder includes a cylinder body and a shaft. The shaft is coupled to and configured to actuate the flow body. The coupling nozzle includes a first locking mechanism coupled to the mount and configured to secure the coupling nozzle to a receptacle in a locked position. When the first locking mechanism is in the locked position, the shaft is configured to actuate the flow control assembly. The coupling nozzle includes a redundant locking mechanism including one or more feet and a lock. The one or more feet are configured to engage the lock to prevent the first locking mechanism from transitioning from the locked position when the shaft is in the extended position.

A coupling device includes a tubular body defining a channel having along an axis a first segment for receiving an endpiece and a second segment including an axially movable valve member which is spring-thrustable from the endpiece from a closed position, towards a disengaged position. The first segment includes a latch movably mounted to the housing and transversely movable via spring relative to the channel-between unlocked and locked positions. The latch includes a transverse bore enabling the endpiece to pass through the latch to push against the valve member, and first and second steps projecting into the bore in axially offset positions such that, when the latch is locked, the first step retains the endpiece in a pushed-in position holding the valve member disengaged and when the latch is unlocked, the second step retains the endpiece in an intermediate position leaving the valve member closed to enable endpiece purging.

A coupling device includes a tubular body defining a channel having along an axis a first segment for receiving an endpiece and a second segment including an axially movable valve member which is spring-thrustable from the endpiece from a closed position, towards a disengaged position. The first segment includes a latch movably mounted to the housing and transversely movable via spring relative to the channel-between unlocked and locked positions. The latch includes a transverse bore enabling the endpiece to pass through the latch to push against the valve member, and first and second steps projecting into the bore in axially offset positions such that, when the latch is locked, the first step retains the endpiece in a pushed-in position holding the valve member disengaged and when the latch is unlocked, the second step retains the endpiece in an intermediate position leaving the valve member closed to enable endpiece purging.

A connector element (1), for a quick connect coupling to a terminal (3) having an interface (33) with a cylindrical enclosure, the connector element with a body delimiting an inner passage (43) for the fluid. In order for the connector to be able to be coupled reliably with terminals of variable dimensions and interface quality, the invention provides that the body has a conical portion (45) and that the connector element (1) has a movable bush (5), an elastic return member (8), which applies an elastic return force (F8) on the bush (5), and clamping pads (6) received in a respective housing (51) of the bush (5), the clamping pads being translated radially relative to the bush by mechanical cooperation with the conical portion, between a radial withdrawn position and a radial clamping position, to cooperate mechanically with the interface.

A receiving unit of a coupling device for fluid lines, and the coupling device. The receiving unit comprises a closure element which fluidically seals the fluid flow channel in a closed position. The closure element is preloaded into the closed position using a spring element. The closure element comprises a perforation-free cylindrical portion. The entire spring element, in the release position of the closure element, is arranged within a region that is completely overlapped by the cylindrical portion along the entire longitudinal extent thereof, as viewed in a radial direction of the cylindrical portion.

A receiving unit of a coupling device for fluid lines, and the coupling device. The receiving unit comprises a closure element which fluidically seals the fluid flow channel in a closed position. The closure element is preloaded into the closed position using a spring element. The closure element comprises a perforation-free cylindrical portion. The entire spring element, in the release position of the closure element, is arranged within a region that is completely overlapped by the cylindrical portion along the entire longitudinal extent thereof, as viewed in a radial direction of the cylindrical portion.

A connector element (1), for a quick connect coupling to a terminal (3) having an interface (33) with a cylindrical enclosure, the connector element with a body delimiting an inner passage (43) for the fluid. In order for the connector to be able to be coupled reliably with terminals of variable dimensions and interface quality, the invention provides that the body has a conical portion (45) and that the connector element (1) has a movable bush (5), an elastic return member (8), which applies an elastic return force (F8) on the bush (5), and clamping pads (6) received in a respective housing (51) of the bush (5), the clamping pads being translated radially relative to the bush by mechanical cooperation with the conical portion, between a radial withdrawn position and a radial clamping position, to cooperate mechanically with the interface.

This document describes devices and methods for reducing liquid spillage, such as fluid coupling devices that include one or more apertures that reduce spillage when the fluid coupling devices are disconnected. In some embodiments, the one or more apertures are designed with features to increase a level of acceleration that liquid within an internal volume of the fluid coupling devices would need to be exposed to in order to spill from the internal volume via the one or more apertures.