Oil and gas recovery system During the loading and unloading process of oil tank trucks , it can realize fully enclosed gas recovery and limit the emission of oil and gas into the atmosphere. While the oil tanker is unloading oil through the oil unloading pipeline, the oil vapor in the oil tank at the gas station returns to the tanker truck through the return line. The tanker truck brings the oil and gas back to the oil depot for processing to achieve the purpose of oil and gas recovery. Subsea valve The subsea valve series, also known as emergency shut-off valve, is installed at the bottom of the tank and can replace traditional top-loading refueling with bottom-loading refueling, making the operation easier, time-saving, safe and environmentally friendly for staff. A cutting groove is designed on the valve body. When an accident occurs on the tank truck, the cutting groove is disconnected and the pipeline under the vehicle is cut off from the tank body without affecting the ...