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Danfoss BFP21 R5 - 1 Stage Oil Pump 071N7173 - 8mm shaft
The Danfoss BFP 21 sizes 3, 5 and 6 oil pumps are designed for small/medium-sized domestic oil burners up to 42 l/h.
Danfoss BFP21R5 Features
- Light oil and Kerosene
- 2 pipe operation
- 1 Stage
- Clockwise rotation
From the suction inlet (S) oil is drawn through the filter (H) to the gear set, where the pressure is increased. When voltage is applied to the NC-valve (normally closed), it opens and releases oil to the nozzle outlet. By means of the diaphragm (D) in the pressure regulator (T) the pressure is kept constant at the value set on adjustment screw (P1). 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 a bypass washer (horseshoe) mounted on screw (A), the oil is returned internally to the gear set (see figure).
Danfoss BFP21 R5 Dimensions
|1 or 2 stage||1|
|Ambient temperature [°C] [Max]||70 °C|
|Ambient temperature [°C] [Min]||-20 °C|
|Capacity [l/h]||42 L/h|
|Capacity range [l/h] [Max]||49 L/h|
|Capacity range [l/h] [Min]||25 L/h|
|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|
|Factory pressure setting [bar]||10 bar|
|Filter area [cm²]||11 cm2|
|Filter grade [µm]||200|
|Flats/key on the shaft||1 flat|
|Nozzle/pressure outlet||L + R|
|Number of pipes||2|
|Number of stages||1|
|Oil pump speed [op/min]||3450 op/min|
|Oil type||Kerosene/Light oil|
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