Types of Warman Pumps. Part 3A, 3B, or 3C: One of these publications, depending on the type of Bearing Assembly fitted, viz. Standard, High Capacity, or Oil Filled. 2. APPLICATION AND FEATURES OF TYPE 'MP' UNLINED SLURRY PUMPS These pumps are of heavy-duty construction, designed for continuous pumping of highly abrasive and corrosive slurries.