A valve-coupler system has a lever that extends under a length axis of the valve body to enable one-handed operation. The valve-coupler body has an opening that is configured over a valve stem and a seal actuator having a lever that can be rotated about a pivot with a single hand to create a seal around the valve stem. Additionally, a valve-coupler may have a gas inlet valve that can be activated by the same single hand to open the valve and allow gas to flow into the valve stem. The inlet valve may be configured in line with the lever whereby the inlet valve is opened when the lever is rotated about the pivot to contact the inlet valve. The inlet valve may be configured on the valve body for manipulation by a user's finger or thumb. The inlet valve may be on the top of the valve body.

A valve assembly for an inflation system that includes a pressure relief valve and a vent valve. The pressure relief valve has a pressure relief housing and a pressure relief valve poppet. The pressure relief housing defines a first pressure relief cavity that is disposed between a first end wall defining a first flow port and a first wall defining a passageway and a second pressure relief cavity disposed between the first wall and a second wall. The pressure relief valve poppet is movably disposed within the first pressure relief cavity and the second pressure relief cavity. The vent valve has a vent housing and a vent valve poppet. The vent housing defines a vent cavity that is disposed between the second wall defining a vent flow port and a second end wall. The vent valve poppet is movably disposed within the vent cavity.

Various embodiments of the present disclosure provide a valve for an inflatable object. The valve is attached to the inflatable object and usable to control the flow of gas (such as air) into (or out of) the interior of the inflatable object to enable inflation (or deflation) of the inflatable object.

A tire management system includes a control valve and a check valve. A method for managing a tire includes: determining a pressure parameter value, determining an operational parameter for a valve based on the pressure parameter value, and controlling the valve based on the operational parameter.

A tire inflation pressure control device of this disclosure may be a handheld device temporarily connected to a valve stem of a tire and used to check, add, or reduce pressure as needed. One or more ports of the device may share these functions. In other embodiments, the device may be attached to a rim of the tire and include a toroidal-shaped pressure chamber. Pressure may be increased using an installed pressurizer or one that is temporarily connected when needed. In some embodiments, the pressurizer is a CO.sub.2, nitrogen, or nitrogen/argon gas cartridge. Likewise, a pressure gauge may be installed or temporally connected when needed, and used at the same time as the pressurizer.

An aspirator may comprise an aspirator body defining an air channel, an aspirator inlet disposed in the aspirator body whereby the air channel receives a compressed fluid, a venting aperture disposed in the aspirator body in fluid communication with the air channel, and a venting valve disposed in the venting aperture. The venting valve is in an open position and the venting valve moves to a closed position in response to the compressed fluid being received by the aspirator.

A tire management system includes a control valve and a check valve. A method for managing a tire includes: determining a pressure parameter value, determining an operational parameter for a valve based on the pressure parameter value, and controlling the valve based on the operational parameter.

A valve assembly for a tire pressure management system includes a housing having a first perforation and a second perforation. The first perforation is selectively in fluid communication with the second perforation. A shuttle assembly is provided in the housing. A failsafe piston is connected to the shuttle assembly. A first biasing member applies a bias to the failsafe piston. A second biasing member applies a bias to the shuttle assembly. When a pressure differential between a pressure in the second perforation and a pressure in the first perforation is at or below a predetermined value, the bias applied by the first biasing member urges the failsafe piston toward the shuttle assembly to prevent fluid communication between the first perforation and the second perforation.

A valve assembly includes a valve housing defining a flow path to allow fluid flow between a first end configured to be connected to a fluid source and a second end and that defines a valve seat in the flow path, a valve member located in the valve seat moveable within the housing between a closed position and an open position, and biasing means within the valve housing and connected to the valve member to bias the valve member in the closed position. The valve member has formed therein across at least part of the radial dimension of the flow path, a frangible part configured to rupture if, while the valve member is in the closed position, a pressure and/or temperature acting on the frangible part exceeds a rupture threshold, thus allowing flow along the flow path.

An inflation device includes an airbag and an air valve. An air inlet is provided at an upper end of the air valve, an air outlet is provide at a lower end of the air valve, an inlet valve that is unidirectionally opened. inwards the air valve is provided at the air inlet, the inlet valve can be opened to a deflation position, an outlet valve is provided at the air outlet that is unidirectionally opened outwards the air valve, a push aim extending towards the outlet valve is configured in the air valve and is movable up and down, the push arm is actuated to move towards the outlet valve if the inlet valve is opened, and is pressed against the outlet valve if the inlet valve is at the deflation position. The deflation operation of the inflation device is simple due to the configuration of the push arm.