Eaton Vickers DG5V Series Solenoid Valve | DG5V-7 DG5V-8 | Pilot Operated Directional Valve

The DG5V Series pilot-operated solenoid directional valves from Chengyuan Hydraulic are high-capacity control components fully compatible with Eaton Vickers industrial standards. Designed for systems requiring precise control of large hydraulic flows, this series utilizes a small solenoid pilot valve to actuate the larger main spool. The range includes DG5V-7 (CETOP 07) and DG5V-8 (CETOP 08) sizes. As a premier product line from Chengyuan, every DG5V valve undergoes 100% simulated condition testing to verify pilot response and main spool switching stability, ensuring 100% original-place interchangeability even in the most demanding environments.

Technical Specifications :

• Core Model Codes: DG5V-7, DG5V-8 (H8 denotes high-pressure version)

• Mounting Interface: CETOP 7 (NG22) / CETOP 8 (NG25)

• Max Operating Pressure: 315 bar (4500 psi)

• Main Valve Max Flow: 300 L/min (DG5V-7) / 700 L/min (DG5V-8)

• Pilot Configuration: P7 (Internal Pilot/Internal Drain), T (External Pilot/External Drain)

• Spool Types: 6C (Closed Center), 3C (P-T connected in center)

• Electrical Specs: 86 (110V AC) / 82 (24V DC) with JA connectors

• Control Logic: Spring Centered

Key Technical Advantages:

• Damped Spool Design: The main spool features progressive throttling notches that effectively mitigate hydraulic shock during switching. This reduces system vibration and protects cylinder seals from pressure spikes.

• High-Reliability Pilot Stage: Equipped with high-performance wet-armature solenoids for superior heat dissipation and contamination resistance. It maintains an extremely low failure rate even during 24/7 high-frequency operation.

• Hardened Balanced Body: The internal valve bore is precision-lapped and nitrided for extreme hardness. This ensures the spool operates freely at 315 bar without binding caused by structural deformation under pressure.

• Modular Pilot Flexibility: Allows for easy conversion between internal/external pilot and drain configurations via plug adjustment. This enables seamless integration into legacy manifolds without requiring modifications.

Application Areas:

• Heavy Machinery: Steering systems for large rollers and primary control circuits for forging presses.

• Metallurgical Industry: Actuator switching in cold and hot rolling production lines.

• Marine Engineering: Winch drive systems and control for large-scale steering gear.

Expert Maintenance Tips:

• Minimum Pilot Pressure: Ensure the system provides sufficient minimum pilot pressure (typically 10-15 bar); otherwise, the main spool may fail to shift completely or exhibit sluggish response.

• Drain Line Integrity: If using external drain mode, ensure the drain line is connected directly to the tank. Never connect it to a pressurized return line, which could damage the pilot stage.

• Electrical Maintenance: Periodically check the waterproof seals at the solenoid connectors to prevent short circuits from coolant or oil ingress, especially in harsh outdoor applications.