Sun Hydraulics Cartridge Valve | CSAB CXDA RDDA CVEV CWEA | Check & Relief Valve

Sun Hydraulics CSAB, CXDA, RDDA & CWEA Series Cartridge Valves

Product Overview: Sun Hydraulics Cartridge Valves are globally recognized for their iconic “Floating Style” design. This unique construction allows internal components to self-center during installation, neutralizing internal stresses caused by manifold machining tolerances or excessive torque. This ensures the spool remains sensitive and responsive even under high-pressure conditions up to 350 Bar. This category features premier models for pressure protection and flow control: CSAB-XXN / CXDA-XCN (Check/Shuttle), RDDA-LCN / RDDA-LVVN (Direct-acting Relief), DRAX-LCN (Reducing), and CVEV-XCN / CWEA-LHN (Counterbalance/Load Holding).

Engineered for high-pressure, long-life, and severe-duty hydraulic integrated circuits, these screw-in cartridges are the premier choice for construction machinery, large-scale Hydraulic Power Units (HPU), crane outrigger locking, and machine tool clamping systems.

Key Technical Advantages:

• Patented Floating Technology: The unique two-piece floating construction significantly enhances operational reliability under high-pressure cycles and minimizes internal leakage risks caused by mechanical stress.

• Rapid Pressure Response (RDDA Series): Direct-acting relief valves provide instantaneous overload protection, ensuring the system remains safe and controllable under sudden pressure spikes.

• Absolute Shut-off & Load Holding (CWEA/CVEV): The counterbalance series provides precise load locking and deceleration control, effectively eliminating actuator drift.

• High-Temperature Sealing (LVVN): Configurations like RDDA-LVVN feature Viton (FKM) seals, suitable for high-temperature environments or specialized chemical media.

Detailed Specifications & Parameters:

• Core Series: Sun Hydraulics Pressure, Check & Load Control Cartridges.

• Featured Model Matrix: CSAB-XXN, CXDA-XCN, RDDA-LVVN, RDDA-LCN, DRAX-LCN, CVEV-XCN, CWEA-LHN.

• Core Performance Specs:

  • Max Operating Pressure: Rated for heavy-duty operations up to 350 Bar (5,000 PSI).

  • Functional Logic: Direct Relief (RDDA), Check/Shuttle (CXDA/CSAB), Counterbalance (CWEA/CVEV).

  • Adjustment Options: L (Leak-proof screw), X (Non-adjustable/Fixed).

  • Sealing Materials: N (Buna-N Standard) or V (Viton options).

  • Cavity Standards: Industry-standard cavities such as T-11A, T-10A, T-2A, T-13A, and T-5A.