Fuel tanker pneumatic bottom valve also called Bottm Valve/oil truck valve. Fuel tanker pneumatic bottom valve is installed on the bottom of the tanker with round flange, the top parts is tightly sealed inside the tanker. External shear groove design limits product spillage when the tanker is crashed down, it will automatically cut off itself via this groove under the situation there's no affectation on the sealing. This will efficiently protect the over rolled tanker from leakage to ensure the safety when transportation. Fuel tanker pneumatic bottom valve is suitable for water, diesel, gasoline and kerosene and other light fuel, ect.