Tire valve is indispensable hollow part of a very important.

     Currently, the most commonly used valve is a spring with several types of valve cores. Modern hollow tube valve is a check valve for filling air, and holding the tube; may emit air in the tube through the check valve when necessary.

     The basic requirements valve structure is to ensure that:

     (1) easy to inflate and deflate;

     (2) can check the internal pressure in the tube;

     (3) air tightness (valve does not leak air);

     (4) can be combined with a solid tube wall, but can be replaced;

     (5) valve structure types and a variety of simple and uniform specifications of the components are to be replaced;

     (6) a solid tube working pressure;

     (7) light.