The FL154M-2 automatic effluent pump from Liberty Pumps has the ability to handle solids up to 3/4' and can work automatically with the use of a control panel. The 1 ? HP motor is nestled inside a cast-iron construction. This model of Liberty Pumps is made to work with mound and STEP systems as well as liquid waste transfer and higher head de-watering applications. This 3 phase submersible sump pump has a fully adjustable pumping range and an extra mounting clamp.