ballcock

• 水箱中利用浮球控制水位的阀门装置，当水位下降时打开进水口，水位达到设定高度时关闭进水口。

A valve mechanism in a water tank that uses a floating ball to regulate the water level by opening or closing the inlet.

1. Floating ball valveC1formaltechnical

   A mechanical device consisting of a floating ball attached to a lever that controls the flow of water into a tank, such as a toilet cistern, by opening or closing a valve based on the water level.

   浮球阀

   • The plumber replaced the old ballcock to stop the toilet from running.
   • When the water level drops, the ballcock opens the valve to refill the tank.
   • A faulty ballcock can cause a constant trickle of water in the cistern.

   同义词ball valve