CB - Counterbalance Valves
Counterbalance Valves Catalog
CB - 20
11141737 • Rev AB • November 2013
OPERATION
APPLICATIONS
SPECIFICATIONS
SCHEMATIC
PERFORMANCE
The VCB06-EN is a cartridge style, 6-size metric
counterbalance valve with hydraulic vent. This valve is 3-
ported, externally piloted and low leakage. The check section
allows free ow from the directional valve (port 2) to the load
(port 3). Reverse ow is blocked until pilot pressure is applied
at port 1. When the load pressure at port 3 rises above the
pressure setting, the integral relief valve is activated and
pressure is relieved from port 3 to port 2.
Rated pressure 350 bar [5075 psi]*
Rated ow at
22 bar (319 psi )
60 l/min [16 US gal/min]
Leakage 10 drops/min @ at 70% of
crack pressure
Weight 0.21 kg [0.47 lb]
Pilot ratio 4.1:1, 7.1:1
Cavity NCS06-3
* 350 bar with steel housing
210 bar with aluminum housing
VCB06-EN
Hydraulic Vent
Single counterbalance valves are normally used when the load is unidirectional, such as aerial lifts, cranes, or winches.
In load holding applications, they can be used as hose-break valves when installed near or within an actuator. Dual
cartridges can be used for controlling loads bi-directionally in motor applications, or for cylinders going over center.
Since this valve is piloted at port 1, no cross port drilling is required when dual cartridges are mounted nose to nose in
an HIC.
VCB06-EN