GB/T2029-2008 Cast steel suction sea valve 

    Sea Valve is an inlet valve installed on both sides, bilge or bottom of the ship below the empty waterline. Open and close the valve through the handwheel or deck transmission mechanism to control the water outside the ship to enter the ship, which is used for washing and cooling the machine on board. The Sea Water Gate Valve should be used as a spare Marine Valve when the ship is docked for repairs. The operation of the main engine of the ship requires seawater cooling, so high and low seabed doors are set to absorb seawater and provide cooling water for the main engine.

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