A safety valve stem cap includes a valve tool that can be used for removing the valve stem and quickly deflating the tube for travel or storage. The valve stem cap has a frustoconical-shaped body with a circular bottom edge and a flat upper surface. The valve tool extends within a recess defined within the cap body. The valve tool includes a planar floor and two upright prongs extending from the floor. In an embodiment, the floor of the valve tool is integrally connected with the cap body. In an embodiment, the valve tool includes a hollow body mounted within the recess. The planar floor and upright prongs extend within the hollow body.

A tire inflation valve having anti-rotation features has an external valve seat, and includes a valve body, a valve stem extending through the length of the valve body, and anti-rotation features 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. The anti-rotation features may include a complementary slot and protrusion, a keyway and complementary protruding ridge, and/or complementary channels and lateral protrusions.

A tire inflation valve having anti-rotation features has an external valve seat, and includes a valve body, a valve stem extending through the length of the valve body, and anti-rotation features 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. The anti-rotation features may include a complementary slot and protrusion, a keyway and complementary protruding ridge, and/or complementary channels and lateral protrusions.

A charge valve assembly for an air conditioning system includes a valve housing having a first end, a second end, and an inner surface defining a cavity. A valve core assembly is received in the cavity of the valve housing through the second end of the valve housing. The valve core assembly has a first end, a second end, a flow channel extending from the first end of the valve core assembly to the second end of the valve core assembly, an inner sealing surface, and a pin slideably received in the flow channel between an open position and a closed position. The pin has a primary seal selectively engaging the inner sealing surface of the valve core assembly and closing the flow channel at the second end of the valve core assembly when in the closed position. The pin biases towards the first end of the valve housing.

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 tire valve assembly is disclosed. The tire valve assembly includes a gas nozzle structure, a movable rod, an air pipe, an elastic close contact pad, a screw nut, an elastic O-ring and a dust cap. The tire valve assembly can use a punched hole on the end of the movable rod to receive the tire repair liquid flowing into the air pipe. Take out the movable rod during maintenance to remove the tire repair liquid in the punched hole. When the movable rod is reinstalled in the air pipe, the tire repair liquid remaining on the inner wall of the air pipe will also be squeezed out of the air pipe. With this, the tire repair liquid will no longer block the tire valve assembly.

A valve core includes: a barrel part that is cylindrical; a barrel packing that surrounds an outer lateral surface of the barrel part; a washer through which the barrel part penetrates and which abuts on the barrel packing from above; and a head part that includes a male screw part at its outer lateral surface and that rotates relative to the barrel part, wherein a lower surface of the head part abuts on the washer from above.

A tire valve assembly is disclosed. The tire valve assembly includes a gas nozzle structure, a movable rod, an air pipe, an elastic close contact pad, a screw nut, an elastic O-ring and a dust cap. The tire valve assembly can use a punched hole on the end of the movable rod to receive the tire repair liquid flowing into the air pipe. Take out the movable rod during maintenance to remove the tire repair liquid in the punched hole. When the movable rod is reinstalled in the air pipe, the tire repair liquid remaining on the inner wall of the air pipe will also be squeezed out of the air pipe. With this, the tire repair liquid will no longer block the tire valve assembly.

A valve includes a tubular body having one end attached to a valve attachment hole; a valve opening; a valve member to open and close the valve opening; a shaft part extending axially along an the body; a valve body part extending radially from the shaft to slide in the opening; a valve chamber adjacent to the opening on one end side in the axial direction, connecting the opening and attachment hole entirely; a valve body holding mechanism holding the body part inside the opening as an operating force causing the member to move in the axial direction, allowing the body part to separate from the opening wherein the member receives an operating force moving towards one end side of the body; a retaining mechanism changes between a restricting state wherein the member is prevented from coming off, and a permitting state wherein the member is allowed to come off.

A valve includes a tubular body having one end attached to a valve attachment hole; a valve opening; a valve member to open and close the valve opening; a shaft part extending axially along an the body; a valve body part extending radially from the shaft to slide in the opening; a valve chamber adjacent to the opening on one end side in the axial direction, connecting the opening and attachment hole entirely; a valve body holding mechanism holding the body part inside the opening as an operating force causing the member to move in the axial direction, allowing the body part to separate from the opening wherein the member receives an operating force moving towards one end side of the body; a retaining mechanism changes between a restricting state wherein the member is prevented from coming off, and a permitting state wherein the member is allowed to come off.