E-CBDD 4.5:1 pilot ratio, semi-restrictive counterbalance valve
SYMBOL
OPERATION
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.
SPECIFICATIONS:
Max.Setting: 350 bar (5000 psi)
Maximum Recommended Load Pressure at Maximum Setting: 270 bar (3850 psi)
Flow: 20 gpm (80L/min)
Internal Leakage: 5 drops/min
Pilot Ratio: 4.5:1
Cavity: T-2A
Installation Torque: 60 – 70Nm
FEATURES:
l Counterbalance valves should be set at least 1.3 times the maximum load induced pressure.
l 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.
l Pressure at port 4 is added to the effective relief setting at a rate of 1 plus the pilot ratio times the pressure.
l Two check valve cracking pressures are available. Use the 25 psi (1,7 bar) check unless actuator cavitation is a concern.
PERFORMANCE:
ORDER CODE:
AAK Hydraulic Valve is a top manufacturer for Hydraulic Cartridge Counterbalance Valves in Ningbo China since 2009.
We guarantee quality for 3 years for non-standard customized valves: No leakage, No Noise, No Vibration.
Contact us to customize your valves and promote your business with our premium quality!
