DCB12-MC
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comatrol hydraulic cartridge valves

Operation
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Dual counterbalance HIC, 12-size, hydraulic vent with make-up checks. This is an internally piloted, low leakage assembly. The DCB12-MC uses two CP441-1 cartridges and four CP100-3 check valves, allowing 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. Connect the T port to a tank line to allow for make-up flow into the circuit
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Application  
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. When make-up feature is needed, connect ‘T’ port to reservoir or charge system. This allows the load to be smoothly controlled with minimum energy loss. If load tries to run ahead of pump, pilot pressure will decrease and the relief section will throttle or close to prevent runaway. The T port is also useful in cylinder applications here directional valves specifically proportional valves) are sensitive to flow ntensification of powering the rod side. The DCB12-MC diverts flow directly to tank and bypasses the irectional valve. This HIC technically replaces the 1EEC12-01.
 
 

Specifications

 

Schematic

 

Rated Presssure        210 bar [3045 psi], Aluminum
315 bar [5075 psi], Ductile
Rated Flow at 22 bar
[319 psi]
  85 l/min
[22.45 US gal/min]    
Weight

  3.13 kg [6.90 lbs], Aluminum
6.98 kg [15.39 lbs], Ductile

Pilot Ratio   3.0:1, 4.5:1, 10.0:1
Cavity   CIB
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Performance

 
DCB12-MC performance new
DCB12-MC performance new


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Dimensions

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Example Circuits

 

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Ordering Information

 

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Product Documents and Downloads
Download this file (DCB12-MC Catalog Pages.pdf)DCB12-MC Catalog Pages.pdf1881 kB04-28-2015

Counterbalance Valves

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