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Danfoss BFP 52E L5 Oil Pump - 071N3202

by Danfoss
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Danfoss BFP 52E L5 Oil Pump - 071N3202

Danfoss BFP52E L5 - 2 Stage Oil Pump 071N3202 - 8mm shaft

The Danfoss BFP 52E sizes 3, 5 and 6 oil pumps are designed for small/medium-sized 2-stage domestic oil burners up to 42 l/h.

Danfoss BFP52E L5 Features

  • Light oil and Kerosene
  • 1 or 2 pipe operation
  • 2 Stage
  • Anti-clockwise rotation
  • Two built-in pressure regulator
  • Solenoid Valve Cut-off
  • Cartridge filter
Danfoss BFP52E L5 Fuel Specs


Danfoss BFP5 Inlet/Outlet Diagram

From the suction inlet (S) oil is drawn through the filter (H) to the gear set, where the pressure is increased. By means of the diaphragm (D) in the pressure regulator for stage 1 (T1), the pressure is kept constant at the value set on adjustment screw (P1). When voltage is applied to the NC-valve, it opens and releases oil to the nozzle outlet. When voltage is applied to the NO-valve, it closes and puts the pressure regulator (T1) out of function. The pressure now rises to the pressure regulator (T2) value for stage 2 set on adjustment screw (P2).

In 2-pipe systems the excess oil is led back to the return outlet (R) and the tank. In 1-pipe systems with plugged return outlet (R) and screw (A) removed, the oil is returned internally to the gear set (see figure).


Danfoss BFP52E L5 Dimensions


071N3202 Oil Pump Dimensions



1 or 2 stage 2
Actuator type NC+NO
Ambient temperature [°C] [Max] 70 °C
Ambient temperature [°C] [Min] -20 °C
Application area Domestic
Application type Domestic
Capacity [l/h] 42 L/h
Capacity group 25-49
Capacity range [l/h] [Max] 49 L/h
Capacity range [l/h] [Min] 25 L/h
Closing function Cut-off
Comments Rotation and nozzle/pressure outlet are always determined viewing from the shaft end of the pump.
Definition point [l/h] 2800 min-1, 10 bar, 4.3 cSt
Description BFP52E L5L
Factory pressure setting [bar] 10 bar
Filter area [cm²] 11 cm2
Filter grade [µm] 200
Filter type Cartridge
Flats/key on the shaft 1 flat
Nozzle/pressure outlet L + R
Number of pipes 2
Number of stages 2
Oil pump speed [op/min] 3450 op/min
Oil type Kerosene/Light oil