An assembly for a tire inflation system includes a ring portion. The ring portion has an outer surface and an inner surface. A first projection and a second projection each extend from the inner surface. A valve assembly is connected to the ring portion and disposed in from the outer surface.

A tubeless air valve stem has a body, an airtight element, and a sleeve. The body has a passage, a through hole, and at least one side hole. The passage is formed on a top end of the body. The through hole is formed through a bottom end of the body and is in communication with the passage. The at least one side hole is formed through an outer surface of the body and is in communication with the passage. The airtight element is disposed around the body. The sleeve is disposed around the body for closing the at least one side hole. Gas or liquid can be injected into a tubeless tire via the at least one side hole. The intake efficiency of the tubeless air valve stem can be maintained and is not influenced by the remaining reinforcing agent.

An air chuck includes a body and a valve core interface. The body includes output, interface, and input ports. The body defines a first passageway that extends between the output and interface ports. The input port defines a second passageway that is in fluid communication with the first passageway. The valve core interface is slidably coupled with the body and is slidable between extended and retracted positions. The valve core interface includes a shaft and a knob. The shaft includes proximal and distal ends. The distal end is at least partially disposed in the first passageway. The knob is coupled with the proximal end of the shaft. The shaft is rotatably coupled with the body and is selectively rotatable in either tightening or loosening directions via the knob. The distal end of the shaft comprises a grasping feature that is configured to grasp a valve core of a valve stem.

A TPMS sensor with an externally replaceable battery is disclosed. The valve stem facilitates battery replacement with a valve stem core designed to removably secure a battery within the valve stem and a sensor configured with an electrical connection designed to connect the sensor to power from the battery. The valve stem has an interior cavity configured to retain the valve stem core. The battery may be at least partially retained within the valve stem. The sensor may be configured in a sensor body connected to an end of the valve stem distal from the valve stem core. The electrical connection may comprise a spring-loaded terminal configured to connect or disconnect the sensor and battery as the battery is inserted or removed from the valve stem through a valve stem end proximal to the valve stem core, permitting battery replacement without removing or deflating a tire configured with the sensor.

A modular TPMS sensor with an externally replaceable battery is disclosed. The valve stem facilitates battery replacement with a valve stem core designed to removably secure a battery within the valve stem and a sensor configured with an electrical connection designed to connect the sensor to power from the battery. The valve stem has an interior cavity configured to retain the valve stem core. The battery may be at least partially retained within the valve stem. The removable sensor may be configured to connect to an end of the valve stem distal from the valve stem core. The electrical connection may comprise a spring-loaded terminal configured to connect or disconnect the sensor and battery as the battery is inserted or removed from the valve stem through a valve stem end proximal to the valve stem core, permitting battery replacement without removing or deflating a tire configured with the sensor.

A valve assembly for controlling inflation and deflation is provided. The valve assembly includes a rapid-inflate valve having an annular body configured to couple to a valve stem port of a wheel and selectively permit gas flow into a tire. The valve has a sealing surface in a chamber with a slidable sealing member biased toward the sealing surface. In a closed position, the sealing member can be positioned in contact with the sealing surface to prohibit gas flow through the valve, and in an open position, the sealing member can be positioned away from the sealing surface to permit gas flow through the valve. Wheel can include dual valve stem ports. In this configuration, the first port has the rapid-inflate valve assembly and the second port can have a rapid-deflate valve stem, a rapid-deflate valve stem cap, a rapid-deflate to pressure set valve stem, or a standard valve stem.

A self-inflation device for maintaining pressure in a tire, the self-inflation device includes a body having a piston compartment and an intake opening external to an inner space of the tire and a piston housed in the piston compartment and having a piston opening internal to the inner space. The piston is moved to a pulled position by centrifugal force applied by rotation of the tire to open the intake opening, and moved to a pushed position by air pressure from the inner space to block the intake opening and create a compression chamber within the piston compartment. The self-inflation device further includes a valve separating the compression chamber and the piston opening. The valve is opened when the piston is in the pushed position to allow airflow between the compression chamber and the inner space.

A highflow air coupling system is provided. The highflow air coupling system has a valve chamber housing having a plurality of openings including a user serviceable port and a reversible air flow valve. The interior of the valve chamber housing has a multi-tiered main valve with multiple large holes located on multiple levels. A unique exterior grip of the housing allows for easy grasping of the housing chamber. The device and system are especially suitable for use with, for example, inflating tires, especially in a military environment.

An exterior installable air valve for a tire rim using an exterior operated nut compressing a gasket against a wedge to expand the gasket for sealing to a wheel rim.

A valve assembly for a central tire inflation system is provided. The valve assembly includes a first housing having a first port connected to a second port via a cavity. The second port is in fluid communication with a wheel assembly. A biasing member is disposed in the cavity adjacent a first perforation formed in the first housing. A valve member is contacted by the biasing member. The valve member includes a first frustoconical portion having a continuous outer surface connected to a second portion having a continuous outer surface, a first end connected to the second portion and a second end connected to the first frustoconical portion wherein the continuous outer surfaces of the first frustoconical portion and the second portion allow a pressurized fluid to flow between the housing and the outer surfaces of the valve member.