When the water level drops, the main valve is composed of a floating ball switch control to open the water inlet to the water tank, automaticreplenishment.
当水位下降后，主阀由浮球开关控制打开进水口向水池汪水，实现自动补水。
2
Reasonable level of cover Pneumatic rotary device, with no damage to cap surface, hopper cover signals within the lack of features such as automaticreplenishment cover.