Kingston valve
![Kingston valves of the Argonaute can be seen on her keel](/Images/godic/202501/22/Argonaute_FS_S636_p10408262254.jpg")
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A Kingston valve is a type of valve fitted in the bottom of a ship's plating that connects the sea to the ship's piping and storage tanks.
A Kingston valve is a type of seacock. It is arranged so that, under normal operating conditions, sea pressure keeps the valve closed. When opened from the ship's interior, the Kingston valve allows sea water to enter the tank.