These pumps feature a self-cleaning clog resistant impeller capable of handling up to 3/8″ diameter semi-solid and EPDM/EPR seals for liquid chemical transfer with specific gravities up to 1.3. (Verify chemical capability with liquids) Built-in check valve enables consistent self-priming to 20 feet. Dual volute design reduces radial load on motor. Pumps feature Dual cycle 50/60 Hz TEFC motors.