Danfoss BFP 10T, BFP 11T Data sheet

Data sheet

Oil Pump Type BFP 10T/11T, sizes 8 & 12

Application	BFP 10T/11T sizes 8 and 12 oil pumps are	BFP 10T/11T features:
	designed for medium/large-sized domestic oil	•	Light oil and kerosene
	burners up to 120 l/h.	•	1 or 2-pipe operation
		•	1-stage
		• Built-in pressure regulator
		• Solenoid valve cut-off (BFP 11T)
		•	Ring filter

Function
Pressure	Suction	Return

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).

Cut-off function, solenoid valve (BFP 11T)

When the burner stops, the voltage to the NC-valve is cut off and the oil flow to the nozzle outlet is cut off immediately.

BFP 10T has no solenoid valve. In systems using this pump, a separate cut-off valve must be fitted in the nozzle line.

Bleeding

In 2-pipe systems the pump is self-priming, i.e. bleeding is performed via the constriction (O) to the return outlet (R).

In 1-pipe systems with plugged return outlet (R), bleeding must be performed through the nozzle outlet (E) or the pressure gauge port (P).

Warranty

For pumps used outside the stated technical data and used with oil containing abrasive particles Danfoss cannot give any warranty.

Note! The solenoid valve must be replaced after 250.000 operations or 10 years (approved life expectancy).

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Data sheet

Oil Pump Type BFP 10T/11T, sizes 8 & 12

Identification

Connections

Change-over and Filter

Replacement

BFP	1 1 T L 8 L

L:left hand nozzle outlet

R:right hand nozzle outlet

8:capacity 80 l/h

12:capacity 120 l/h

L:left hand rotation

R:right hand rotation

T:pressure regulator on top

0:without solenoid valve

1:with one solenoid valve

1:ring filter, pressure adjustment on side

Nozzle capacity at 4.3 cSt., 10 bar, 2800 min-1

Example shows L-rotation pump with solenoid valve

P1: Pressure adjustment

S: Suction inlet G1/4

R: Return outlet G1/4

E: Nozzle outlet G1/8

P: Pressure gauge port G1/8

V: Vacuum gauge port G1/8

Note! Shaft rotation, location of nozzle outlet and other connections are seen from shaft end.

RH: R-rotation

LH: L-rotation

A: 2-pipe operation, screw S without bypass washer

B: 1-pipe operation, screw S with bypass washer

H: Filter

VD.DK.T2.02

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