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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. The mechanism is named after its inventor John Kingston (1786-1847), an English engineer. ==Surface ships== On surface ships, Kingston valves are fitted on ship systems such as fuel tanks, water tanks, and ballast tanks. The valve allows sea water to enter the tank. For fuel tanks, the purpose was cleaning the tanks. On water tanks, the Kingston valve gave ship engineers the ability to blow out increasingly salty water from the system, by safely and easily operating the valve from the interior of the ship.〔 Sea water was used in the ship's steam-powered propulsion system, with water being injected and ejected from the boilers.〔 Water, controlled by a Kingston valve, could be deliberately taken on board to act as ballast below the waterline. This provided additional stability and maneuvering. Some shipboard safety systems may also incorporate Kingston valves. Uses include the fire extinguishing system and the system to flood the artillery magazine.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Kingston valve」の詳細全文を読む スポンサード リンク
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