Weir Minerals manufactures nuclear slurry pumps designed for special nuclear grade sumps where radioactive sludge that requires low shear is handled. Depending on model, the pumps are available with capacities of 30 to 300 GPM or 1,000 to 3,000 GPM, and heads to 50 to 150 feet, 50 to 300 feet, or 30 to 250 feet.