CB20-HV Counterbalance Valve
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comatrol hydraulic cartridge valves

 

Operation

 

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.

 


 

 

Applications

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.

 

 

 

 

Specifications

Schematic  

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% crack pressure  
Weight   1.22 kg [2.69 lb]
Pilot Ratio   3:1, 4.5:1, 10:1
Cavity   CP20-3S

 

Performance Curve

 

 

Dimensions

 

 

Example Circuits

   

 

Ordering Information

 

 

 
Product Documents and Downloads
Download this file (CB20-HV 3D STP Files.zip)CB20-HV 3D STP Files.zip59 kB04-28-2015
Download this file (CB20-HV Catalog page.pdf)CB20-HV Catalog page.pdf377 kB04-28-2015

Counterbalance Valves

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