To meet the extreme temperature requirements of transformer oil applications, the transformer oil pumps are rated for continuous-duty operating temperature ranges from -40 to 212°F (-40 to 100°C). The pumps include the capability to permit thermosiphon flow when the pump is not operating, allowing natural convection even when the pump is completely shut off. Heavy-duty Class 30 cast iron is used for the pump casting, motor enclosures, impellers and volutes. Large thrust-face sleeve-bearings help extend life, minimize wear and reduce maintenance.
Cardinal Pumps, Division of Unifin International, (888) 451-0310