3PPRINZ rotary hollow disk pumps are positive displacement pumps that have a wide range of uses in handling and transporting petroleum and process products. This type of single impeller pump is ideal for transferring medium, high and very high viscosity liquids containing even small amounts of suspended solids. Special materials such as Duplex, Super Duplex, stainless steel or special alloy, as well as special coating material for parts in contact with the fluid, are available upon request.