Reverse Circulation Standard Pump is a type of circulating pump designed for liquids & chemicals with relatively high vapor pressure, low specific gravity, low specific hot liquids. Fluid with a steep vapor pressure curve can evaporate at the motor's heat up and produce cavitation conditions. The circulation / pumping fluid is passed from the casing volute chamber to the rotor chamber through the front bearing housing. After being extracted from the rear cushion housing outlet, the liquid is returned to the vapor zone in the suction tank, via an inverted circulation path. We also sell Hydraulic Pumps.