The present invention overcomes the shortcomings of the current trial and error method in deflating tires. The controlled tire deflation valve system allows for tires to automatically and accurately deflate to the desired pressure. The present invention comprises a shaft, a spring and a piston wherein the shaft runs through the spring until the spring rests on the shaft spring seat. The shaft spring seat is effective in restricting the movement of the spring.

A valve for an inflatable device is disclosed. The valve includes a base configured to seal to a fluid impermeable wall of a bladder of the inflatable device, a cap including a rim, and a seal. The bases defines an orifice for exhausting fluid from an interior of the inflatable device and a sealing surface. The rim can include a generally circular peripheral region including at least one rib located about an underside of the peripheral region and a cavity defined in part by at least one wall located radially inward of the rib. The seal can include a first end region secured to the cap within the cavity between the at least one wall and the at least one rib and a second end region configured to move with the at least one first end region secured to the cap.

An inflator valve connector includes a housing, a connection assembly, a valve seat, and a pushing member. The connection assembly is rotatably arranged in the housing and includes a first connection hole adapted to connect a Presta valve and a second connection hole adapted to connect a Schrader valve. The valve seat has a first abutting portion faced to the first connection hole and adapted to abut a lock nut of the Presta valve, and a second abutting portion faced to the second connection hole and adapted to abut a valve core of the Schrader valve. The pushing member removably contacts the connection assembly and has a pushing portion adapted to enter the housing via the first connection hole and to push against the first abutting portion, causing the valve seat to move relative to the housing and to close to the second connection hole.

An inflation system for tubeless bicycle tires may include a valve, a sealant canister, a pump head, and/or a valve core adapter. The valve, sealant canister, and pump head may collectively facilitate sealant injection into a tire by a user. The valve has an external valve seat, and includes a valve body, a valve stem extending through the length of the valve body, and a retaining mechanism for the valve stem disposed interior to the valve body. The valve stem is configured to move relative to the valve body, such that a resilient seating surface disposed at a proximal end of the valve stem is displaced relative to a valve seat formed by an exterior surface of a proximal end of the valve body.

A valve nozzle structure for an inflatable cushion includes an outer body, an inner body, and a diaphragm member. The diaphragm member is assembled in the inner body. The inner body is assembled in the outer body. The valve nozzle structure is able to provide one-way inflation with an automatic check function and deflation. The outer body further includes a holding plate configured to release the sealing state of the diaphragm member. Thus, the valve nozzle structure can achieve an automatic and continuous deflation function. The inner body is detachably connected to the outer body, which is beneficial for maintenance and replacement of the parts.

An inflation valve for a tubeless tire may include a valve body defining a cavity having a proximal opening and a distal opening. A valve stem extends through the cavity and includes a plug at a proximal end of the valve stem. The proximal opening of the cavity is defined by a beveled surface, and an outer diameter of the beveled surface is larger than an inner diameter of the valve body. The valve is transitionable between: a) a closed position, where a resilient surface of the plug engages the beveled surface to seal the cavity, and b) an open position, where the resilient surface of the plug is spaced from the beveled surface to unseal the cavity.

A valve cap assembly for being attached to an air valve and removably covering an end of the air valve includes a hoop, a cap, and an arched tether connecting the hoop and the cap. The hoop attaches the valve cap assembly to the air valve. The cap removably covers the end of the air valve to protect the end of the air valve. Both the hoop and the cap form a dependable interference fit between the hoop or cap and the valve stem to retain the hoop on the valve stem and to retain the cap covering the end of the air valve on the air valve. The cap includes one or more longitudinal protrusions that form the interference fit.

An inflation system for tubeless bicycle tires may include a valve, a sealant canister, a pump head, and/or a valve core adapter. The valve, sealant canister, and pump head may collectively facilitate sealant injection into a tire by a user. The valve has an external valve seat, and includes a valve body, a valve stem extending through the length of the valve body, and a retaining mechanism for the valve stem disposed interior to the valve body. The valve stem is configured to move relative to the valve body, such that a resilient seating surface disposed at a proximal end of the valve stem is displaced relative to a valve seat formed by an exterior surface of a proximal end of the valve body.

Novel air valve includes a valve stem assembly and a storage space provided on one side of the valve stem assembly and used for storing an inflating component; the valve stem assembly includes a valve base and a valve core capable of elastically retactable relative to the valve base; the valve base is provided with an opening, and the bottom of the opening having a core cavity enabling the valve core to expand and contract elastically therein; and vents are disposed in a circumferential direction of the core cavity; the valve core is provided with a sealing block for sealing the opening; and a pressure spring is disposed between the sealing block and the bottom of the core cavity for pressing the sealing block to block the opening.

An inflator valve connector includes a housing, a connection assembly, a valve seat, and a pushing member. The connection assembly is rotatably arranged in the housing and includes a first connection hole adapted to connect a Presta valve and a second connection hole adapted to connect a Schrader valve. The valve seat has a first abutting portion faced to the first connection hole and adapted to abut a lock nut of the Presta valve, and a second abutting portion faced to the second connection hole and adapted to abut a valve core of the Schrader valve. The pushing member removably contacts the connection assembly and has a pushing portion adapted to enter the housing via the first connection hole and to push against the first abutting portion, causing the valve seat to move relative to the housing and to close to the second connection hole.