This bulletin announces the availability of the Outline 448C. the Outline of Investigation for Stationary, Rotary-Type, Positive-Displacement Pumps For Fire-Protection Service. These requirements cover stationary, rotary type, positive displacement pumps intended for supplying water or foam concentrate to fire protection systems. The pumps covered by these requirements are intended to be mounted in the horizontal position and installed in accordance with the Standard for Installation of Stationary Pumps for Fire Protection, NFPA 20.