VCB12-EN Counterbalance Valve
English Chinese (Simplified) Spanish

comatrol hydraulic cartridge valves




The VCB12-EN is a cartridge style, 12-size metric
counterbalance valve with hydraulic vent. This valve
is 3-ported, externally piloted and low leakage. The
check section allows free flow from the directional valve
(port 2) to the load (port 3). Reverse flow 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.





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.






Rated Pressure   350 bar
[5075 psi]
Rated flow at 22bar
[319 psi]  
  140 l/min
[37 US gal/min]
Leakage   10 drops/min @
70% crack pressure  
Weight   0.7 kg [1.58 lb]
Pilot Ratio   4.7:1, 5.9:1, 6.9:1
Cavity   NCS12-3


Performance Curve





Example Circuits


f_670_300_16777215_00_images_counterbalance-valves_VCB12-EN_VCB12-EN_ec1.jpeg   f_670_300_16777215_00_images_counterbalance-valves_VCB12-EN_VCB12-EN_ec2.jpeg  

Ordering Information



Product Documents and Downloads
Download this file (VCB12-EN 3D STP file.stp)VCB12-EN 3D STP file.stp349 kB04-14-2014
Download this file (VCB12-EN Catalog Page.pdf)VCB12-EN Catalog Page.pdf497 kB02-11-2014
© Comatrol 2014   Facebook      Twitter     linkedin Linked-In     youtube YouTube  Privacy Policy    Disclaimer