Danfoss Oil pump BFP41 R3 071N7137

The Danfoss BFP41 R3 oil pump (SKU 071N7137) is a gear pump designed for domestic burners with a fuel consumption up to 42 l/h. It operates with light fuels and kerosene, supporting both single and two-pipe systems. The pump features a single pressure level, a built-in pressure regulator, solenoid valve, and cassette filter. Its technical specifications include a pressure range of 7000–20000 mbar, a maximum inlet pressure of 2000 mbar, and a flow rate of 11.0952 GPH. The pump is suitable for fuel temperatures from 0 to 70 °C and ambient/transport temperatures from -20 to 70 °C, with a protection class of IP40.

When selecting a replacement oil pump of this type, ensure that the shaft standard (EN225) and rotation speed range (2400-3450 min) match the burner's drive. Verify the pressure range and maximum inlet pressure are compatible with the system's requirements. The pump must support the fuel type and viscosity (1.8-12.0 cst) used in the installation. Check the mounting dimensions and shaft configuration to confirm physical fit.

Common failures in oil pumps of this kind include loss of pressure due to worn gears or a clogged filter, leading to burner ignition issues or unstable flame. A faulty solenoid valve may cause fuel leakage or improper shutdown. Symptoms may include the burner failing to start, pulsating operation, or soot formation. Inspect the filter and pressure regulator for debris or damage, and verify the shaft coupling for wear.