Suntec Oil pump AN47C1342

The Suntec Oil pump AN47C1342 is an internal gear pump designed for compact burner systems requiring low fuel flow rates. It delivers a flow rate of 12.4161 GPH and operates within a pressure range of 7000–15000 mbar. The pump features an integrated pressure regulating and cut-off valve, ensuring stable fuel delivery. It has a shaft diameter of 8 mm, operates with fuel temperatures from 0 to 60 °C, and handles fuel viscosities of 2–75 mm²/s. The rotation direction is counter-clockwise, with inlet and return connections of g 1/4" and a nozzle outlet of g 1/8".

Parts of this type are selected by matching the pump's flow rate, pressure range, shaft diameter, rotation direction, and connection sizes to the burner's specifications. Mounting forms include hub mounting according to EN 225, and the shaft diameter must be verified. Before ordering, measure the shaft diameter and check the rotation direction, as well as the inlet, return, and nozzle connection threads.

Common failure modes for oil pumps of this kind include loss of pressure regulation, leading to unstable burner operation or flame fluctuations. A failing cut-off valve may cause fuel to leak after shutdown, resulting in soot or odor. Symptoms can also include noisy operation due to cavitation or worn gears. Check the pump's pressure output, inspect for fuel leaks, and verify the rotation direction if the pump fails to prime.