DOH Heavy Duty Centrifugal Slurry Pump DO Slurry Pump Heavy duty, rubber lined, high head, stable, high efficient, tank, sing case, Slurry Pump “DOH” Heavy Duty Slurry Pumps are designed for a wide range of erosive and/or corrosive applications. Heavy Duty Slurry Pumps are generally required to use in the conditions of high concentrations of erosive solids transportation.