SUN Hydraulics Cartridge Valve | CBBALHN | PBFC-ABN | PVFB-LAN | CXDAXCN | Balancing & Pressure Control

Industrial Precision Cartridge Valves (Counterbalance, Reducing, & Logic)

Product Overview: This series of Threaded Cartridge Valves represents the pinnacle of integrated hydraulic control, offering comprehensive solutions from load holding to precision pressure regulation. The CBBALHN counterbalance valve is specifically engineered to prevent actuator overrunning and ensure smooth descent, while the PBFC-ABN and PVFB-LAN reducing valves provide stable secondary pressure control for downstream component safety. When combined with high-reliability check valves like CXDAXCN and CXAAXBN, this lineup enables the construction of compact, leak-free, and rapid-response hydraulic circuits.

Featured models: CBBALHN, PRFRLWN, CSADXXN, CXAAXBN, CXDAXCN, PBFC-ABN, and PVFB-LAN.

Key Technical Advantages:

• Superior Load Motion Control: The CBBALHN features a 3:1 pilot ratio, modulating flow based on real-time load pressure to eliminate chatter and ensure the security of lifting and mobile machinery.

• High-Precision Pressure Management: The PBFC and PVFB pilot-operated reducing valves exhibit ultra-low hysteresis, maintaining a constant secondary pressure even amidst primary system fluctuations.

• Low Pressure Drop Design: The CXDA and CXAA check valves feature fluid-dynamically optimized passages, minimizing energy loss during high-flow operation and reducing system heat generation.

• Standard Cavity Integration: Compatible with standard T-11A, T-2A, and related cavities, facilitating manifold miniaturization and simplifying on-site replacement and maintenance.

Detailed Specifications & Parameters:

• Featured Model Matrix:

  • CBBALHN: Counterbalance valve, 3:1 pilot ratio, L adjustment, Range H (70-280 Bar), fits T-11A.

  • PBFC-ABN: Pilot-operated reducing valve, A adjustment, Range B (3.5-105 Bar), N seals.

  • PVFB-LAN: Pilot-operated reducing/relieving valve, L adjustment, provides dual-direction pressure protection.

  • CXDAXCN / CXAAXBN: Direct-acting check valves with various cracking pressure options (e.g., 0.3-2 Bar).

  • PRFRLWN: Pilot-operated relief valve for high-precision pressure limitation.

• Core Technical Specs:

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

  • Flow Capacity: Covers from 40 L/min up to 120 L/min depending on size.

  • Seals: Standard Buna-N (N); Viton (FKM) optional for high-temperature or phosphate ester fluids.