1, stainless steel gear pump structure is simple and compact, easy to use and maintain. 2, stainless steel gear pump with good self-absorption, so each time before opening the pump without filling the liquid. 3, stainless steel gear pump lubrication is delivered by the liquid automatically reached, so the daily work without additional lubrication. 4, the use of flexible coupling transmission power can compensate for the installation caused by the small deviation. In the pump work by the inevitable hydraulic impact, can play a good buffer role.