Danfoss LFB12 Technical Information
Traction Control HIC Technical Information
barpsi
LFB12
OPERATION &
APPLICATION
The Loop Flushing Block allows oil to
drain from the power transmission loop
to other oil treatment components.
The low pressure side of the circuit is
directed to the relief valve, which is then
drained out of the transmission loop.
This HIC is typically used in closed
loop circuits to assist in the process of
removing contamination and cooling
oil. Hydrostatic systems with sustained
operation and continuous pressure
will benet from a loop ushing circuit.
To congure the LFB12, determine the
charge pump pressure and desired
ushing ow. Working up from the
desired ow, select the orice size
with a pressure rise that, when added
to one of the available relief settings
(in the ordering information section),
meets the charge pump pressure.
Specications
Rated pressure 350 bar [5075 psi]
Rated ow See performance chart
Weight 3.4 kg [7.5 lb]
Valves CP721-3 [Shuttle]
CP210-1 [Relief]
M12 orice plug
Material Ductile Iron
Schematic
Open CenterClosed Center
DR
GA GAGB GB
DR
BABA
PERFORMANCE
CHART
20
250
15
200
150
10
100
Charge pressure minus relief se�ng
5
50
0
0
0 10 20 30 40 50
0 2 4 6 8 10 12
Pressure rise per orice option
33 cSt [154 SUS] hyd. oil at 38°C [100°F]
2.5m m
3.0mm 3.5 mm 4 .0mm 4.5m m 5 .0mm
Flow
None
lpm
gpm
BC332376200116en-000101 • February 2020
TR- 7
DIMENSIONS
mm [in]
Traction Control HIC Technical Information
LFB12
ORDERING
INFORMATION
LFB12 - C - 17 - 3.0 - B - S8S
Spool Center
C = Closed
O = Open
Relief Setting
07 = 07 bar [100 psi]
10 = 10 bar [150 psi]
14 = 14 bar [200 psi]
17 = 17 bar [250 psi]
21 = 21 bar [300 psi]
24 = 24 bar [350 psi]
28 = 28 bar [400 psi]
BC332376200116en-000101 • February 2020
Orifi ce Option
00 = None
2.5 = ø2.5mm
3.0 = ø3.0mm
3.5 = ø3.5mm
4.0 = ø4.0mm
4.5 = ø4.5mm
5.0 = ø5.0mm
Port Sizes
S8S = 8S SAE [A, B, & DR]
S4B = ½ BSP [A, B, & DR]
Seal Material
B = Buna
V = Viton
6S SAE [GA & GB]
¼ BSP [GA & GB]
TR- 8
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