Vacuum breaker

A vacuum breaker comprising:

• a main body;
• a bushing mounted in the main body;
• a braking member mounted in the main body and located above the bushing;
• a water stop gasket mounted in the main body and located above the braking member;
• an elastic member mounted in the main body and biased between the bushing and the braking member;
• a water inlet disk mounted in the main body and located above the water stop gasket;
• and
• a washer mounted in the main body and located above the water inlet disk;
• wherein:
• the bushing is made of plastic material;
• the main body is provided with a plurality of air vent holes corresponding to the water stop gasket and connected to an interior of the main body;
• the elastic member pushes the braking member toward the water stop gasket so that the braking member presses the water stop gasket;
• the water stop gasket has a center provided with a first water inlet hole;
• the water inlet disk has a periphery provided with a plurality of second water inlet holes misaligning with the first water inlet hole of the water stop gasket;
• the vacuum breaker further comprises a connection structure mounted between an inner circumference of the main body and an outer circumference of the bushing;
• the bushing is combined integrally with the main body by the connection structure under an external force;
• the interior of the main body is provided with a protruding edge, a first stepped edge, a second stepped edge, a third stepped edge and a fourth stepped edge;
• the bushing has an upper end resting on the protruding edge of the main body and has a lower end provided with an outer flange resting on the first stepped edge of the main body;
• the water stop gasket rests on the second stepped edge of the main body;
• the water inlet disk rests on the third stepped edge of the main body;
• and
• the washer rests on the fourth stepped edge of the main body.