Common failure analysis of stainless steel refueling gun.
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The refueling gun ACTS as the terminal of refueling equipment at the oil station which is convenient for operation and safe oil supply. Once the gun is broken it will also bring inconvenience and insecurity to the production of oil station. The following is the analysis of the common faults and then solve the problem.
One oil gun to close the oil leak.
The cause of this condition is that the main valve and the seat between the foreign body or the auxiliary valve spring does not work resulting in a tight seal. It's easy to solve this problem by simply cleaning the main valve and stretching the spring.
Two the gun is not self-sealing.
The causes of this situation is untight seal switch membrane cavity and the outside world such as plastic cavity pressure on the wire is not tight oil gun mouth connecting sleeve and the auxiliary seat in the "O" type sealing ring is damaged make inferior vena cannot form pressure switch membrane. To solve this problem we need to tighten the plastic cover wire and replace the "O" seal ring.
3. Small flow is not self-sealing.
The reason is that in the small flow the velocity is low the air suction is small the pressure difference between the lower chamber of the switch film is small and the spring force can not be overcome to move the self-sealing pole. Solving this problem requires reducing the spring force.
4. The gun is self-styled.
The reason is that the intake pipe in the nozzle is blocked by foreign body and the spring force of the cavity on the switch membrane is too small. Solution: remove the foreign body in the intake pipe and stretch the spring to enhance the elasticity.
