A tire valve assembly includes a valve shaft movably inserted into a first diameter section of the outer tube. The valve shaft includes a passage and a radial hole which communicates with the passage. A first seal is mounted to the end of the valve shaft that is inserted into the outer tube and is movable relative to a shoulder in the outer tube. A guide tube is mounted to the valve shaft and has a guide portion protruding therefrom which is guided in guide groove in the outer tube. An adjustment tube is threadedly mounted to the first outer threads on the valve shaft. When rotating the adjustment tube, the valve shaft is axially movable in the outer tube to control the gap between the first seal and the shoulder in the outer tube. The gap is changeable and communicates with the radial hole and the passage.

A mouthpiece includes: a mouthpiece main body portion including a tubular member to which an air supply device is connected on one end side and a tire valve is connected on the other end side; an annular protruding portion which is formed at a required position on the outer circumferential portion of the mouthpiece main body portion; a tire valve insertion hole provided in a tire-valve-side tip portion of the mouthpiece main body portion; an O-ring arranged on the air supply device side inside the tire valve insertion hole; and a back-up ring that presses the O-ring from the air supply device side of the O-ring; an actuation body having a substantially convex shape in which a cylindrical tip portion is reduced in diameter.

A tire valve assembly includes a valve shaft movably inserted into a first diameter section of the outer tube. The valve shaft includes a passage and a radial hole which communicates with the passage. A first seal is mounted to the end of the valve shaft that is inserted into the outer tube and is movable relative to a shoulder in the outer tube. A guide tube is mounted to the valve shaft and has a guide portion protruding therefrom which is guided in guide groove in the outer tube. An adjustment tube is threadedly mounted to the first outer threads on the valve shaft. When rotating the adjustment tube, the valve shaft is axially movable in the outer tube to control the gap between the first seal and the shoulder in the outer tube. The gap is changeable and communicates with the radial hole and the passage.

The utility model provides an air valve for an opening of a compression bag. An air valve bottom plate is provided with a cylinder. The air valve bottom plate and the cylinder are penetrated through an air vent. The air vent is provided with a ring sleeve, and a silicon pad fits a convex ring of the ring sleeve. The air vent is provided with support ribs. A lower opening of the air vent is provided with ribs. The ribs and the support ribs are all disposed on the air valve bottom plate. A ring is disposed at a central position of the air vent, and the support ribs are connected to the ring. A longitudinal portion of the silicon pad passes through the ring, and the silicon pad is provided with a boss. The utility model has a simple and reliable structure and a desirable effect in use.

In an aspect, an inflatable object includes an object body enclosing a chamber to receive air, and a valve mounted to the inflatable object body, including a valve body defining a passageway between the chamber and an ambient environment. The valve body has a shoulder. The valve body defines an outside end, which opens to the ambient environment, and an inside end, which opens into the chamber. The valve includes a one-way flap that is movable between an open position to permit fluid communication between the chamber and the ambient environment through the passageway, and a closed position. The one-way flap is biased to the closed position with a closing force selected to be overcomable to move the one-way flap to the open position by an airflow having a speed that is less than about 48 m/s, and which is at a pressure lower than 1 atmosphere.

A nozzle for fast inflation and deflation includes a flexible plastic body, an air tube, and a sealing plug. The flexible plastic body is connected to a bottom of the air tube, and the sealing plug is flexibly connected to an outer port of the air tube. A valve sheet is in the flexible plastic body. For air inflation or deflation, a gap as an air channel is formed between the valve sheet and the air tube for inflation or deflation without pressing the flexible plastic body. To store air, the air tube is bent downward until the flexible plastic body is deformed to cause the valve sheet to contact the inner port of the air tube so as to avoid air leakage. Then, the air tube is allowed to be slowly plugged by the sealing plug. The problem of internal air leaking out is thus fully solved.

A cap apparatus includes a cap body and a valve body. The valve body includes an upper portion, a lower portion, and a stem intermediately disposed between the upper portion and the lower portion, the valve body including a bore formed therein having concentric alignment to and traversing the upper portion and the stem, and the valve body including a perforation formed therein having concentric alignment to and traversing the stem and the lower portion. The perforation forms a substantially impermeable seal within the valve body. The cap body includes an aperture in coaxial alignment with the bore and the perforation. The inner surface of the cap body includes multiple internal threads.

A valve core capable of suppressing manufacturing costs, including: a first core cylinder body, a second core cylinder body having a valve opening on an opposite side to the first, a movable member having a valve body which opens and closes the valve opening at the front end of a shaft section linearly movably extending through the insides of the core cylinder bodies, an elastic member in contact with the movable member and the first body and biasing to sandwich the second body between the first and valve body, and a pair of fitting sections including a first and a second fitting section on the core cylinder bodies and which are rotatably fitted and are separable from each other without interfering. The fitting sections have cylindrical shapes that are detachably fitted to each other, and the first section has a stepped surface with which the second section is in contact.

An inflation valve for inflating containers with non-rigid walls comprising a tubular body defining a passage with a first opening at one end and a second opening at its opposite end, adapted to be secured to a container, a sealing disc adapted to sealingly close off the second opening to the passage in the tubular body, and adapted to open the second opening mechanically when an inflation device is inserted into the passage through the first opening and thus gas may be passed into the container through the second opening, thereby moving the sealing disc away from the second opening, a guide member located within the passage of the tubular body; a spring adapted to assist the sealing disc to close off the second opening; and a gasket and/or sealing ring adapted to assist the sealing disc to close off the second opening.

An inflation valve cap comprises a main body structure (1), a push rod structure, an elastic restoring member (4), and a push rod fixing base (6). The interior of the main body structure (1) is provided with a central cavity. The push rod structure is disposed inside the central cavity. The elastic restoring member (4) is arranged between the upper end of the push rod structure and the push rod fixing base (6). The push rod fixing base (6) is located at a lower portion of the central cavity. A bottom portion of the push rod structure is provided with a push rod seal (5), and in a non-inflated state, the push rod seal (5) presses against an inner inclined face at the middle portion of the inner cavity of the push rod fixing base (6), thereby achieving the sealing in the non-inflated state.