For some deep well or some wells that require hanging more tail pipes, Shengji specifically designed and manufactured a type of pump called gap bridge pump. In this pump, the bottom of barrel adopts gap bridge structure, which can increase the pump efficiency.

This pump includes plunger assembly, barrel, barrel upper coupling and lower coupling, standing valve assembly, gap bridge tubing and tubing coupling. The gap bridge connects to upper coupling. This structure improves the pump press-bearing structure and prevents the deformation of the barrel when the tubing string falls off. At the same it reduce the gravity influence of the tail pipe.

So, it is suitable for the deep well or wells that require more tail pipe. Compared with the conventional pump, this kind of pump can be used in the deep well more than 500-1000 meters.