Sun Hydraulics Sequence Valve | SCGA-LAN SQDB-LAN PBBB-LAN | Air-controlled Pilot

Sun Hydraulics Air-controlled Pilot-operated Sequence & Reducing Valves

Product Overview: Sun Hydraulics Cartridge Valves set the performance standard in the hydraulic industry with their patented “Floating Style” design. This construction allows internal components to self-center during installation, neutralizing internal stresses caused by manifold machining tolerances or excessive torque. This category features the air-controlled and pilot-operated series, including core models: SCGA-LAN, SCIA-LAN (Air-controlled sequence), SQDB / SQFB / SQHB / SQJB (Pilot-operated balanced piston sequence), and PBBB-LAN (Pilot-operated reducing).

These valves are specifically engineered for applications requiring remote hydraulic pressure control via pneumatic signals. They are widely utilized in automated fixtures, tire building machinery, power units in hazardous environments, and various air-over-oil systems.

Key Technical Advantages:

• Pneumatic Pilot Remote Control: Enables precise adjustment of hydraulic sequence pressure through pneumatic signals, providing physical isolation between electrical and hydraulic systems for enhanced safety.

• Balanced Piston Stability: The SQ series features a balanced piston design, ensuring that pressure settings remain exceptionally stable despite flow fluctuations or changes in back pressure.

• Patented Floating Technology: The unique two-piece structure significantly reduces the risk of spool binding, enhancing reliability during high-cycle operations.

• Low Hysteresis Response: Precision-ground pilot-stage components ensure high sensitivity and excellent repeatability in pressure regulation.

Detailed Specifications & Parameters:

• Core Series: Sun Hydraulics Air-controlled & Pilot-operated Cartridges.

• Featured Model Matrix: SCGA-LAN, SCIA-LAN, SQDB-LAN, SQFB-LAN, SQHB-LAN, SQJB-LAN, PBBB-LAN.

• Core Performance Specs:

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

  • Control Options: LAN (Standard pilot control with leak-proof screw).

  • Pneumatic Pilot Ratio: Specific pressure conversion ratios available for air-controlled models.

  • Cavity Standards: Industry-standard cavities such as T-11A, T-17A, T-2A, and T-10A.

  • Sealing: Standard Buna-N; Viton options available for specialized fluids.