Shengji designs and manufactures a kind of hydraulic feedback and anti-corrosion pump. This is a patented product; it can be used in the thermal recovery of a single well and in cold recovery. Hydraulic feedback pump includes two different diameter pumps. It uses the hydraulic feedback theory, which can reduce the breaking of sucker rod.

It has a good sealing property, high efficiency, low seal resistant, mechanical components wear well, has a long life cycle and further enhances the hydraulic pump feedback wide adaptability. The pump is improved, reasonable design, has a simple structure, easy to manufacture, easy to use and effective.

The pump life has been increased 3-5 times more than conventional pumps. It is an outstanding and efficient sand pump. Equipped with stainless cage, this pump will increase the anti-corrosion property which can be used in high corrosive heavy oil well.