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50CBL90-2A TYPE Counterbalance Valve

Series of pictures

Cartridge-type external pilot-operated counterbalance valves are mainly used to control the speed and direction of movement of hydraulic actuators as well as the stability of the load, and to maintain a counterbalance pressure to provide dampening of cylinders when there is a rapid loss in stored pressure.

Rated pressure (bar / psi) : 380 / 5500

Rated flow (L/min / gpm)  : 90 / 24

Cavity: T-2A

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Series advantages

  • Two-stage counterbalance type 

  • Hardened parts for long life 

  • Quiet, modulated response 

  • Industry common cavity

Technical specifications

Rated   pressure380 bar (5500 psi)
Rated   flow90 L/min(24 gpm)
Pilot   ratio5.6:1 (first stage pilot ratio);   0.7:1 (second stage pilot ratio)
Internal   leakage≤ 5 drops/min @ 80% of pressure   setting
CavityT-2A (See technical reference)
FluidMineral-based or synthetics with   lubricating properties
Viscosity   range7.4 to 420 mm2/s
Temperature   range-40 to 100 ℃ (Buna N seals)
Degree   of fluid contaminationThe  minimum    pollution  level  is    ISO4406  level  18/16/13,    and  level 15/13/11 is   recommended to prolong the service life
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