Danfoss VCB12-CN-DL Technical Information
Counterbalance Valves Technical Information
10 20 30
Pressure drop
Dual Counterbalance - Atmospheric Vent
VCB12-CN-DL
OPERATION
The VCB12-CN-DL is a dual counterbalance HIC, 12-size
metric, nose to nose design with atmoshperic vent. This
catalog HIC allows free ow from the V ports to the C
ports and blocks ow in the reverse direction until the
relief setting is reached, or until adequate pilot pressure
has been applied to the opposite V port.
APPLICATIONS
Atmospherically vented valves are applied when it is not practical to connect a separate vent line to the tank. Use
dual counterbalance HIC’s for controlling loads in bidirectional motion such as wheel motor applications or for
cylinders going over center.
SPECIFICATIONS SCHEMATIC
Rated pressure 350 bar [5075 psi]*
Rated ow at
22 bar (319 psi )
Weight 2.92 kg [6.45 lb]
Pilot ratio 4.7:1, 5.9:1, 6.9:1
Cavity CIB
* 350 bar with steel housing
210 bar with aluminum housing
PERFORMANCE
140 l/min [37 US gal/min]
250
200
150
100
50
psi
bar
20
15
10
26 cSt [125 SUS] hyd.oil @ 20° C[68°F]
3
5
2
2
3
0
BC332375678109en-000101 • February 2020
0
l/min
US gal/min
35 70 105
140
CB - 39
DIMENSIONS
mm [in]
EXAMPLE CIRCUITS
Counterbalance Valves Technical Information
Dual Counterbalance - Atmospheric Vent
VCB12-CN-DL
turn cw to increase
pressure setting
turn ccw to decrease
pressure setting
VCB12-CN-DL
Bi-directional
Motion Control
ORDERING INFORMATION
VCB12-CN-DL
Counterbalance Double
Actuator
BC332375678109en-000101 • February 2020
CB - 40
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