Pistol refueling machine auto shut off fuel gasoline/gasoline/diesel refueling gun aluminum alloy refueling nozzle wholesale           The double main valve self-sealing gun is modified on the basis of the original 11A self-sealing gun, which has the characteristics of light shooting and low impact when closing the gun. Double sealing, no leakage, effectively prolong the service life of the oil gun. Pressureless self-sealing refueling guns are generally used for self-service refueling guns to avoid oil leakage caused by misoperation. 1. Pressure protection: When there is no pressure, the oil gun switch is in a state of relaxation and powerlessness, and the oil can only be fired when the pressure is normal and stable. 2. Switch protection: After the quantitative refueling is completed or the oil pump stops, the oil gun switch will be automatically jumped off immediately and the oil gun will be turned off. 3. Accidental protection: The oil gun has a tilt protection function. During the refueling process, the nozzle will automatically turn off the gun. During the refueling process, the oil gun will automatically turn off if it falls on the ground accidentally.