Sun Hydraulics Cartridge Valve | PBDB-LAN RDDA-LCN DWDA-XAN | Pilot Check & Relief

Sun Hydraulics PBDB, RDDA, DWDA & CX 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 stresses caused by manifold machining tolerances or excessive torque. This ensures the spool remains sensitive even under high-pressure conditions up to 350 Bar. This category features premier models for pressure and logic control: PBDB-LAN (Pilot-operated reducing), RDDA-LCN (Direct-acting relief), DWDA-XAN (Directional logic), and the CXJA / CXDA / DMDA series.

Engineered for high-pressure, long-life, and severe-duty hydraulic integrated circuits, these screw-in cartridges integrate seamlessly into custom manifolds. They are the premier choice for mobile cranes, injection molding machinery, Hydraulic Power Units (HPU), and high-performance hydraulic manifolds.

Key Technical Advantages:

• Patented Floating Technology: The unique two-piece floating construction significantly enhances operational reliability and sensitivity under high-pressure cycles, reducing long-term maintenance costs.

• Precision Pressure Management: The PBDB and RDDA series provide exceptional pressure stability, protecting actuators from primary system pressure fluctuations.

• Zero-Leakage & Longevity: Hardened and precision-ground internal components guarantee rapid response times and absolute shut-off integrity.

• Logic Control Flexibility: The DWDA and DMDA logic elements allow for high-speed switching and directional control within complex hydraulic circuits.

Detailed Specifications & Parameters:

• Core Series: Sun Hydraulics Pressure Control & Directional Logic Cartridges.

• Featured Model Matrix: PBDB-LAN, DWDA-XAN, CXJA-XAN, CXDA-XCN, RDDA-LCN, DMDA-XNN.

• Core Performance Specs:

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

  • Functional Logic: Pilot reducing (PBDB), Direct relief (RDDA), 2-way logic (DWDA), Check (CX series).

  • 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-8A.