alemite pneumatic barrel pump

The pump section is located at the lower end of the immersion tube. The pump is driven from the top of the immersion tube, using an extended shaft protected by a sealed column. The pumped liquid flows between the sleeve and the tube to the discharge port at the motor end of the immersion tube. When the plunger rod moves downward, the four-leg valve closes downward, and the oil in the pump is squeezed by the plunger rod to open the nylon piston valve to drain oil again so that as long as the oil injection pump moves up and down, the oil can generate high pressure and be discharged.