Danfoss CP441-2 Technical Information

Counterbalance Valves Technical Information

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 flow from the V port to the C ports and blocks flow 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 flow at	115 l/min [30 US gal/min]
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	psi
	435
	363
	290
		<![if ! IE]> <![endif]>drop
	218	<![if ! IE]> <![endif]>Pressure
	145
	73

bar	154 SUS (33 cSt) hyd. oil @ 100° F (38° C)
30
25
20
					pilot		open
15
10
							free flow
5
0
	L/min	40		80					120
				Flow
		10.6							31.7
US gal/min				21.1

BC332375678109en-000101 • February 2020

CB - 29

Counterbalance Valves Technical Information

Dual Counterbalance - Hydraulic Vent

CP441-2

DIMENSIONS mm [in]

	Turn ccw to increase
	pressure setting
	Turn cw to reduce				129.3
	pressure setting
					[5.09]
V2				88.9
			V1	[3.50]		Bottom view
			22.4			82.6		19.1
			[0.88]			[3.25]	44.5
								[0.75]
				50.8			[1.75]
	10.4			[2.00]
						C2	C1	38.1
19.1	[0.41]	101.6		12.7
								[1.50]
[0.75]	127.0	[4.00]
				[0.50]
	[5.00]	Bottom view

EXAMPLE CIRCUITS

Bi-directional	CP441-2	Bi-directional	CP441-2
Motor Control		Load Control

ORDERING INFORMATION

BC332375678109en-000101

• February 2020

CB - 30