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SUN HYDRAULICS CORP
CBHALHN
CBHA-LHN
All Other Products

Cartridge

$443.00

SUN HYDRAULICS CORP

MATERIAL:  CBHA-LHN

SUMMARY:  Cartridge

Quantity in stock: 1

Quantity Details:
  • Hydrotech Stock: 0 can ship March 28, 2024
  • Factory Stock: 1 can ship June 27, 2024
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Counterbalance valves with pilot assist are meant to control an overrunning load. The check valve allows free flow from the directional valve (port 2) to the load (port 1) while a direct-acting, pilot-assisted relief valve controls flow from port 1 to port 2. Pilot assist at port 3 lowers the effective setting of the relief valve at a rate determined by the pilot ratio.

Other names for this valve include motion control valve and over center valve.

  • Counterbalance valves should be set at least 1.3 times the maximum load induced pressure.
  • Restrictive valves have no relief capacity other than as a thermal relief.
  • Turn adjustment clockwise to decrease setting and release load.
  • Full clockwise setting is less than 200 psi (14 bar).
  • Backpressure at port 2 adds to the effective relief setting at a ratio of 1 plus the pilot ratio times the backpressure.
  • Reseat exceeds 85% of set pressure when the valve is standard set. Settings lower than the standard set pressure may result in lower reseat percentages.
  • Sun counterbalance cartridges can be installed directly into a cavity machined in an actuator housing for added protection and improved stiffness in the circuit.
  • Two check valve cracking pressures are available. Use the 25 psi (1,7 bar) check unless actuator cavitation is a concern.
  • This valve has positive seals between all ports.
  • All 3-port counterbalance, load control, and pilot-to-open check cartridges are physically interchangeable (i.e. same flow path, same cavity for a given frame size).
  • Incorporates the Sun floating style construction to minimize the possibility of internal parts binding due to excessive installation torque and/or cavity/cartridge machining variations.

Cavity T-19A
Series 4
Capacity 20 gpm80 L/min.
Pilot Ratio 3:13:1
Maximum Recommended Load Pressure at Maximum Setting 3075 psi215 bar
Maximum Setting 4000 psi280 bar
Factory Pressure Settings Established at 2 in³/min.30 cc/min.
Maximum Valve Leakage at Reseat 5 drops/min.0,3 cc/min.
Adjustment - Number of Counterclockwise Turns to Increase Setting 3.753.75
Operating Characteristic RestrictiveRestrictive
Reseat >85% of setting>85% of setting
Valve Hex Size 1 5/8 in.41,3 mm
Valve Installation Torque 350 - 375 lbf ft474 - 508 Nm
Adjustment Screw Internal Hex Size 7/32 in.5,5 mm
Locknut Hex Size 3/4 in.19,1 mm
Locknut Torque 25 - 30 lbf ft35 - 40 Nm
Model Weight 3.00 lb1,35 kg
Seal kit - Cartridge Viton: 990-019-006

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