CP441-1 Counterbalance Valve
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comatrol hydraulic cartridge valves

 

Operation

 

This 3-ported, externally piloted unit is a 12-size cartridge style, low leakage counterbalance valve with hydraulic vent. 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.

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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   350 bar [5075 psi]
Rated flow at 22 bar
[319 psi]  
  115 l/min
[30 US gal/min]
Leakage   10 drops/min @
70% crack pressure  
Weight   0.22 kg [0.48 lb]
Pilot Ratio   3:1, 4.5:1, 10:1
Cavity   CP12-3S
 f_250_250_16777215_00_images_counterbalance-valves_CP441-1_CP441-1_schematic.jpg 

 

Performance Curves

 f_250_250_16777215_00_images_counterbalance-valves_CP441-1_CP441-1_performance.jpg

Dimensions

 f_670_300_16777215_00_images_counterbalance-valves_CP441-1_CP441-1_dimensions.jpg

 

Example Circuits

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Ordering Information

f_670_300_16777215_00_images_counterbalance-valves_CP441-1_CP441-1_ordering.jpg  
Product Documents and Downloads
Download this file (CP441-1 - 3D STP Files.zip)CP441-1 - 3D STP Files.zip61 kB04-28-2015
Download this file (CP441-1 Catalog Page.pdf)CP441-1 Catalog Page.pdf381 kB04-28-2015
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