Noun
any valve that checks flow by the seating of a ball
Source: WordNetAn ice plug is set on top of the ball valve to protect it, the cans atop the ice plug. Source: Internet
Three-port valves Schematic 3 way ball valve: L-shaped ball right, T-shaped left Valves with three ports serve many different functions. Source: Internet
The TDU is also flushed with seawater to ensure it is completely empty and the ball valve is clear before closing the valve. Source: Internet
At the bottom of the TDU is a large ball valve. Source: Internet
The top breech door is shut, and the TDU is flooded and equalized with sea pressure, the ball valve is opened and the cans fall out assisted by scrap iron weights in the cans. Source: Internet