2inch Vent Valve for Oil Tanker Manhole Cover

The safety valve is installed on the top of the tank car and has an emergency pressure relief function. When the pressure in the tank exceeds the rated discharge pressure, the valve flap opens to dischargethe pressure in the tank. The safety valve is equipped witha pressure relief device that cannot be closedagain after the bursting disc device bursts under the set pressure. When the pressure or vacuum limit isexceeded, the pressure is released to protect the safety of the tank.

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