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

designed for medium/large-sized domestic oil
burners up to 120 l/h.

Function

BFP 10T/11T features:

• Light oil and kerosene

• 1 or 2-pipe operation

• 1-stage

• Built-in pressure regulator

• Solenoid valve cut-off (BFP 11T)

• Ring filter

© Danfoss | 2019.06

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
expectanc y).

VD.DK.T2.02 | 1

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

Identification

BFP 1 1 T L 8 L

L:R:left hand nozzle outlet

8:

12:

L:R:left hand rotation

T: pressure regulator on top

0:1:without solenoid valve

1: ring filter, pressure adjustment on side

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

-1

Connections Example shows L-rotation pump with solenoid valve

right hand nozzle outlet

capacity 80 l/h
capacity 120 l/h

right hand rotation

with one 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

Change-over and Filter
Replacement

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

2 | © Danfoss | 2019.06

VD.DK.T2.02