Danfoss CP441-2 Technical Information
Counterbalance Valves Technical Information
145
218
290
363
435
Dual Counterbalance - Hydraulic Vent
CP441-2
OPERATION
This dual counterbalance, internally piloted catalog HIC is a low
leakage assembly with hydraulic vent. This HIC uses 2 CP441-1
12-size cartridges and allows 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.
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.
SPECIFICATIONS SCHEMATIC
Rated pressure 350 bar [5075 psi]*
Rated ow at
22 bar (319 psi )
Weight 1.26 kg [2.77 lb]
Pilot ratio 3:1, 4.5:1, 10:1
Cavity CIB
* 350 bar with steel housing
210 bar with aluminum housing
PERFORMANCE
115 l/min [30 US gal/min]
psi bar
30
25
20
e drop
15
Pressur
10
73
154 SUS (33 cSt) hyd. oil @ 100° F (38° C)
pilot open
free flow
5
BC332375678109en-000101 • February 2020
0
L/min
US gal/min
40
10.6
Flow
80
21.1
120
31.7
CB - 29
DIMENSIONS
Bottom view
mm [in]
V2
19.1
[0.75]
EXAMPLE CIRCUITS
Counterbalance Valves Technical Information
Dual Counterbalance - Hydraulic Vent
CP441-2
Turn ccw to increase
pressure setting
Turn cw to reduce
pressure setting
10.4
[0.41]
127.0
[5.00]
101.6
[4.00]
V1
22.4
[0.88]
[0.50]
50.8
[2.00]
12.7
129.3
[5.09]
88.9
[3.50]
Bottom view
C2
82.6
[3.25]
44.5
[1.75]
C1
19.1
[0.75]
38.1
[1.50]
Bi-directional
CP441-2
Motor Control
ORDERING INFORMATION
Bi-directional
Load Control
CP441-2
BC332375678109en-000101 • February 2020
CB - 30
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