- There is a part storing water within the casing, and by maintaining the water level to the suction mouth, the pump first works as a vacuum pump, and after removing air completely, the pump continues storage pumping.

- Even if operation is stopped for a long time, priming could be conducted automatically to absorb and discharge again.

- For pumping of buildings and drainage of construction work.

- For water supply, agricultural irrigation and drainage 

- For drainage of septic tank, basements and manholes  

- For food chemicals and general industrial work  

- No need for foot valve

- Even if the water within the piping was to flow into the well (under the pipe) due to the breakage of the check valve, the water within the pump casing allow self-suction

- The rotation of the pump is conveyed fully to lift water with strong power

- The pump outlet is large in amount and power is spent in small quantities

- The structure is simple that disassembling and assembling is easy and sturdy