Sun Hydraulics Counterbalance Valve - Standard Capacity - 1.5:1 Pilot Ratio - CBCBLHN

Features
 • 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
 • 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 concer
 • 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)
 • Corrosion-resistant cartridge valves are intended for use in corrosive environments and are identified by the model code suffix /AP for external stainless steel components, or /LH for external zinc-nickel plated components. See the CONFIGURATION section for all options
 • For further details, please see the Materials of Construction page located under TECH RESOURCES
 • 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

Specifications

 • Cavity : T-11A
 • Series : 1
 • Capacity : 15 gpm
 • Pilot Ratio : 1.5:1
 • Maximum Recommended Load Pressure at Maximum Setting : 3075 psi
 • Maximum Setting : 4000 psi
 • Factory Pressure Settings Established at : 2 in³/min.
 • Maximum Valve Leakage at Reseat : 5 drops/min.
 • Adjustment - No. of CCW Turns from Min. to Max. Setting : 3.75
 • Operating Characteristic : Standard
 • Reseat : >85% of setting
 • Valve Hex Size : 7/8 in.
 • Valve Installation Torque : 30 - 35 lbf ft
 • Adjustment Screw Internal Hex Size : 5/32 in.
 • Locknut Hex Size : 9/16 in.
 • Locknut Torque : 80 - 90 lbf in.
 • Model Weight : 0.35 lb.
 • Seal kit - Cartridge : 990011007
 • Seal kit - Cartridge : 990011002
 • Seal kit - Cartridge : 990011006

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