SUN Balancing Valve | CAIG-LGN | CBEG-LJN | CAIGLGN | CBEGLJN | Counterbalance Valve

CAIG & CBEG Series High-Performance Counterbalance Valves

Product Overview:

The CAIG and CBEG series are essential safety components designed to control the descending speed of overrunning loads in hydraulic systems. As precision Counterbalance Valves, their primary function is to prevent uncontrolled cylinder drops under gravity and to provide secure load locking when the hydraulic pump is idle. Integrating a free-flow check valve and a pilot-operated relief function, these valves ensure that heavy-duty machinery—such as cranes and excavators—operates with maximum smoothness and safety.

Featured models include: CAIG-LGN (CAIGLGN) and CBEG-LJN (CBEGLJN).

Key Technical Advantages:

• Zero-Drift Load Locking: Utilizes hardened steel spools to achieve zero leakage in static states, ensuring the load remains locked without drifting over time.

• Smooth Flow Modulation: The balanced pilot-to-spring mechanism eliminates chatter and resonance during load descent, providing superior control.

• Optimized Pilot Ratios: Engineered with specific pilot ratios to offer the perfect balance between operator control feel and system energy efficiency.

• High-Pressure Durability: Designed for heavy-duty cycles with a rated pressure of up to 350 Bar, capable of withstanding millions of high-pressure operations.

Detailed Specifications & Parameters:

• Featured Model Matrix:

  • CAIG-LGN / CAIGLGN: 2:1 Pilot Ratio, G range pressure setting (e.g., $140-420\text{ Bar}$), fits T-11A cavity.

  • CBEG-LJN / CBEGLJN: 4.5:1 Pilot Ratio, J range pressure setting (e.g., $140-350\text{ Bar}$), fits T-2A cavity.

• Core Technical Specs:

  • Max Operating Pressure: Rated up to 350 Bar (5000 PSI).

  • Max Flow Capacity: CAIG approx. $60\text{ L/min}$; CBEG approx. $120\text{ L/min}$.

  • Adjustment Type: L type manual hex screw adjustment.

  • Seals: N (Buna-N) standard; V (Viton/FKM) optional for high-temp environments.

  • Cavity Spec: T-11A (CAIG) / T-2A (CBEG).