CB - Counterbalance Valves
Counterbalance Valves Catalog
CB - 12
11141716 • Rev AB • November 2013
OPERATION
APPLICATIONS
SPECIFICATIONS
PERFORMANCE
SCHEMATIC
CB20-HV : Counterbalance valve, 20-size, hydraulic
vent. This is a 3-ported, externally piloted, cartridge
style, low leakage unit. The check section allows free
flow from the directional valve (port 2) to the load (port
1), while normally blocking flow from port 1 to port 2.
Reverse flow is blocked until pilot pressure is applied
at port 3. When the load pressure at port 1 rises above
the pressure setting, the integral relief valve is activated
and pressure is relieved from port 1 to port 2.
Rated pressure 345 bar [5000 psi]*
Rated flow at
22 bar (319 psi )
266 l/min [70 US gal/min]
Leakage 10 drops/min @ 70% of
crack pressure
Weight 1.22 kg [2.69 lb]
Pilot ratio 3:1, 4.5:1, 10:1
Cavity CP20-3SP20-3S
* 345 bar with steel housing
210 bar with aluminum housing
CB20-HV
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
valves can be used for controlling loads bi-directionally in motor applications, or for cylinders going over center.
1
2
3
CB20-HV
CB - Counterbalance Valves
Counterbalance Valves Catalog
CB - 13
mm [in]
11141716 • Rev AB • November 2013
DIMENSIONS
EXAMPLE CIRCUITS
ORDERING INFORMATION
CB20-HV
Hydraulic Vent
CB20-HV
Load Holding -
Single Actuator
Load Holding -
Double
Actuator
CB20-HV
CB20-HV CB20-HV
