Minor water leak prevention apparatus for water inlet valve

A minor water leak prevention apparatus for a water inlet valve, the minor water leak prevention apparatus is mounted to a water inlet valve body and comprises a swing arm, a regulation bar, a float, a water container, a siphon tube, and a counterweight buoyance switch;

• the swing arm is rotatably mounted to the water inlet valve body, the swing arm having an end to which a back pressure pad is mounted to correspond to a back pressure hole of the water inlet valve body, the swing arm having an opposite end connected to the regulation bar;
• the float is mounted on the regulation bar and received in the water container, the water container being mounted on the water inlet valve body;
• the siphon tube is mounted on the water container, the siphon tube being formed with an air aperture;
• the counterweight buoyance switch is mounted on the water container, the counterweight buoyance switch comprising a counterweight water compartment and a buoyance water compartment, the counterweight water compartment having a lower end in which a water drain hole is formed, the counterweight water compartment having an upper end to which a closure pressing plate is provided, the closure pressing plate corresponding to the air aperture, the counterweight buoyance switch controlling opening/closing of the air aperture.