COMMENT

　　· It doesn't need hood valve because of the strong self-sucking in rotation.

　　· Simplicity to install and operate because of the unnecessariness of defleting the air and filling out the water.

　　· Easiness to change the parts. Impeller can easily be changed by the unting the front cover.

　　· Possibility of lashing and backlashing

　　· Multi-functional pump which can carry the high viscosity of fluid, solid body , and sludge/slurry

　　· Selective installation of the rubber impellers between CR rubber which has strong durability and intensity and NBR

　　rubber which has strong anti-oil nature.