What is the adjusting screw on the intake pipe of an oil-gas dual-purpose vehicle?

The air inlet and air outlet on the cylinder are two adjustable hexagon screws.

Turn the screw left and right to adjust the aperture size of the small hole corresponding to the air outlet of the cylinder, so as to adjust the recoil speed in the cylinder and avoid excessive noise and damage to the cylinder. At the end of the cylinder, when the moving speed is too high, it is not enough to absorb the impact of the piston on the cylinder only by preventing electric shock inside the cylinder, which will produce great noise and damage the cylinder. Therefore, most cylinders are equipped with recoil devices. These two hexagon socket head screws are recoil adjustment screws. By adjusting these two screws, the speed of cylinder recoil can be adjusted. If the screw is screwed in, the buffer will become more obvious; If the screw is unscrewed, the cushioning effect will become inconspicuous. Remember to pay attention to safety when inflating gas cylinders. If the screw is screwed out, it is likely that the screw will fly out at high speed, just like an air gun, which may lead to personal injury.