Danfoss 071N7170 BFP21 L3 oil pump

Danfoss 071N7170 BFP21L3 oil pumps used in small and medium-sized household burners with a fuel consumption of up to 42 l/h. Fuel passes through the filter to the gear mechanism, increasing pressure. The NC valve opens when powered, allowing fuel to reach the nozzle. The regulator maintains constant pressure. In two-pipe mode, excess fuel returns to the tank; in one-pipe mode, it goes to the bypass.

Danfoss BFP21L3 071N7170 gear pump technical data:

• Viscosity range (in the suction line): 1.8-12.0 cSt(mm2/s)
• Filter area / cross-section: 11/200 cm2/microns
• Pressure range: 7-20 bar
• Factory settings: 10 ±1 bar
• Max. pressure in the suction/return line: 2 bar
• Shaft rotation speed: 2400-3450 min
• Max. starting torque: 0.1 Nm
• Ambient temperature: -20 to +70 °C
• Storage temperature: -25 to +120 °C
• Fuel temperature: 0 to +70 °C
• Coil protection degree: IP40
• Shaft: EN225