Cbey-Lhn Original Sun Hydraulic Counterbalance Valve

• Function: Balance, Pressure Regulating, Reversing, Flow Control
• Installation: Cover Plate
• Drive: Electric Hydraulic
• Type: Directly Operated Type
• Material: Stainless Steel
• Warranty: 12 Months
• Model NO.: CBEY-LHN
• After-Sales Service: Online Technical Support
• Applications: Industrial Usage
• Transport Package: Standard Carton or Wooden Package
• Specification: Standrad Size
• Trademark: SUN
• Origin: China
• HS Code: 8481802190
• Production Capacity: 50000PCS/Year

Product Description

Original SUN CBEY-LHN Cartridge Valve Hydraulic Valve
 

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 concern.
• This valve uses orifices to lower the pilot ratio and therefore will pass up to 40 in³/min./1000 psi (0,7 L/min./70 bar) between port 2 and port 3. This is a consideration in master-slave circuits and in the leak testing of valve-cylinder assemblies.
• 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.

 

Technical Data  

Cavity	T-2A
Series	2
Capacity	30 gpm
Pilot Ratio	2:1
Maximum Recommended Load Pressure at Maximum Setting	3075 psi
Maximum Setting	4000 psi
Pilot Configuration	Bleed through
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	1 1/8 in.
Valve Installation Torque	45 - 50 lbf ft
Adjustment Screw Internal Hex Size	5/32 in.
Locknut Hex Size	9/16 in.
Locknut Torque	80 - 90 lbf in.
Model Weight	0.63 lb.
Seal kit - Cartridge	Buna: 990202007
Seal kit - Cartridge	Polyurethane: 990002002
Seal kit - Cartridge	Viton: 990202006

Detailed photos

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