Danfoss DCB12-MC Technical Information
Counterbalance Valves Technical Information
C1 C2
TV1 V2
Dual Counterbalance - w/ Makeup Checks, Catalog HIC
DCB12-MC
OPERATION
Dual counterbalance HIC, 12-size, hydraulic vent with make-up checks. This is
an internally piloted, low leakage assembly. The DCB12-MC uses two CP441-1
cartridges and four CV10-NP check valves, allowing free ow from the V port
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. Connect the T port to a tank line to allow for make-up ow into the
circuit.
APPLICATIONS
Dual counterbalance HIC’s are used for controlling loads in bidirectional motion such as wheel motor applications
or for cylinders going over center. They are also suitable for use on the boom and dipper cylinder on an excavator.
When make-up feature is needed, connect ‘T’ port to reservoir or charge system. This allows the load to be smoothly
controlled with minimum energy loss. If load tries to run ahead of pump, pilot pressure will decrease and the relief
section will throttle or close to prevent runaway. The T port is also useful in cylinder applications where directional
valves (specically proportional valves) are sensitive to ow intensication of powering the rod side. The DCB12-MC
diverts ow directly to tank and bypasses the directional valve. This HIC technically replaces the 1EEC12-01.
SPECIFICATIONS SCHEMATIC
Rated pressure
Rated ow at
22 bar (319 psi )
Weight 3.13 kg [6.90 lbs], Aluminum
Pilot ratio 3.0:1, 4.5:1, 10.0:1
Cavity CIB
210 bar [3045 psi], Aluminum
350 bar [5075 psi], Ductile
95 l/min [25 US gal/min]
6.98 kg [15.39 lbs], Ductile
PERFORMANCE
BC332375678109en-000101 • February 2020
CB - 43
DIMENSIONS
EXAMPLE CIRCUITS
Counterbalance Valves Technical Information
Dual Counterbalance - w/ Makeup Checks, Catalog HIC
DCB12-MC
ORDERING INFORMATION
BC332375678109en-000101 • February 2020
CB - 44
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