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Sun Hydraulics CB** Counterbalance Valves - Three Port

Three port counterbalance cartridges (with pilot-to-open assist) are modulating devices that allow free flow from port 2 (inlet) to port 1 (load) and then block reverse flow until a pilot pressure inversely proportional to the load pressure is applied at port 3 (pilot). The modulation of a counterbalance valve is a function of both the load pressure and the pilot pressure, yielding an “inverse pilot ratio”; light loads require more pilot pressure and heavy loads less pilot pressure to open the counterbalance valve, helping to improve stability and providing fine motion control.

Features:

  • Low leakage on closing. Specification maximum leakage is 5 drops/minute (0,4 cc/minute) at 85% of setting on reseating.
  • Low relief valve hysteresis over a wide flow range.
  • Good tolerance to contamination.
  • Operating pressures to 5000 psi (350 bar).
  • Flow capacities to 120 gpm (460 L/min.).
  • Adjustment screw can be used to lower the setting, providing an emergency manual release when pilot pressure is not available.
  • Optional check valve springs available. 25 psi (1,7 bar) is standard and recommended to avoid normal shock damage. 4 psi (0,3 bar) is available to minimize cavitation.
  • Intentional minor leakage past the pilot piston is standard on many valves to purge air from the pilot line and improve stability. Sealed pilot pistons are standard on some models.
Part Number Cavity Size Flow Capacity l/min) Pressure Adjustment Range (bar) Pilot Ratio Flow Characteristic Datasheet Link
CBBA-LHN T-11A 20 70-280 3:1 Restrictive View Datasheet Buy Now
CBBC-LHN T-11A 40 70-280 3:1 Semi- Restrictive View Datasheet Buy Now
CBCA-LHN T-11A 60 70-280 3:1 Standard Capacity View Datasheet Buy Now
CBEA-LHN T-2A 120 70-280 3:1 Standard Capacity View Datasheet Buy Now
CBGA-LHN T-17A 240 70-280 3:1 Standard Capacity View Datasheet Buy Now
CBIA-LHN T-19A 480 70-280 3:1 Standard Capacity View Datasheet Buy Now
CBCG-LJN T-11A 60 140-350 4.5:1 Standard Capacity View Datasheet Buy Now
CBEG-LJN T-2A 120 140-350 4.5:1 Standard Capacity View Datasheet Buy Now
CBGG-LJN T-17A 240 140-350 4.5:1 Standard Capacity View Datasheet Buy Now
CBIG-LJN T-19A 480 140-350 4.5:1 Standard Capacity View Datasheet Buy Now
CBCL-LJN T-11A 60 140-350 2.3:1 Standard Capacity View Datasheet Buy Now
CBEL-LJN T-2A 120 140-350 2.3:1 Standard Capacity View Datasheet Buy Now
CBGL-LJN T-17A 240 140-350 2.3:1 Standard Capacity View Datasheet Buy Now
CBIL-LJN T-19A 480 140-350 2.3:1 Standard Capacity View Datasheet Buy Now

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