SUN Directional Valve CSAA-BXN | CSAB-XXN | DPBB-LAN | DFFA-8DN | Logic Cartridge Valve

CSA Series Directional Logic & Pressure Control Cartridge Valves

Product Overview: This series of Threaded Cartridge Directional Control Valves (Shuttle/Logic valves) and pressure modulation valves forms the foundation of precision hydraulic circuit design. The CSAA through CSAZ series offers diverse flow switching logics for signal selection, circuit pilot-sensing, or load-sensing (LS) systems. When paired with the DPBB-LAN pilot-operated reducing/relieving valve (for stable secondary pressure) and the DFFA-8DN high-capacity relief valve (for system overload protection), these components significantly enhance the response speed and operational safety of the hydraulic system.

Featured models include: CSAA-BXN, CSAB-XXN, CSAD-XXN, CSAX-XXN, CSAZ-XXN, DPBB-LAN, and DFFA-8DN.

Key Technical Advantages:

• Versatile Logic Switching: The CSA shuttle valve series automatically senses and selects the highest pressure between two lines—a vital function for load-sensing (LS) circuits.

• Exceptional Sealing & Reliability: Manufactured with hardened steel internals to ensure extended service life and ultra-low internal leakage under frequent switching conditions.

• Precise Pressure Step-Down Control: The DPBB-LAN transforms unstable primary system pressure into a stable, lowered output, safeguarding downstream precision actuators.

• High-Response Relief Protection: The DFFA-8DN is optimized for high-pressure, high-flow environments, providing reliable pressure limitation against transient spikes.

Detailed Specifications & Parameters:

• Directional/Logic Valve Matrix:

  • CSAA-BXN: Shuttle valve with specific opening characteristics; fits standard T-13A cavity.

  • CSAB-XXN / CSAD-XXN: High-performance directional switching valves with multiple logic configuration options.

  • CSAX-XXN / CSAZ-XXN: Specialized shuttle modules optimized for specific flow paths.

• Pressure Control Modules:

  • DPBB-LAN: Pilot-operated reducing/relieving valve, Range A (7-210 Bar), fits T-11A cavity.

  • DFFA-8DN: Pilot-operated relief valve with superior flow capacity and pressure stability.

• Core Technical Specs:

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

  • Adjustment Type: L type (manual hex adjustment for DPBB) or X type (fixed/non-adjustable).

  • Cavity Specs: T-13A, T-11A, T-16A, etc.

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