The DG5V Size 8 Directional Control Valve serves as a control valve package. It offers directional control, pilot pressure reducers, pilot chokes, and main stage stroke adjustment to control the flow. These valves are generally used to control large flows up to 700 l/min (185 USgpm) at 350 bar (5000 psi) and provide low pressure drops. The range includes:

Each valve contains a mainstage spool which is positioned in the valve by special arrangement. The four arrangements are:

• Spring offset - For single stage operation, one spring returns spool to an offset position. For two–stage operation, springs and washers are removed from main stage and offset action is obtained from pilot valve.
• Spring centered - Spring and washer are located on both ends of main stage spool to control centering.
• Pressure centered - Centering springs are used in addition to pilot pressure, to provide positive centering should pilot pressure fail.
• No spring for DG3 - Springs and washers are provided so that in the event of pilot pressure failure, the main spool will spring center.

Features and benefits

A ‘mini-system’ capability with wide variety of spool and spring arrangements, stroke and pilot choke adjustments, integral check valves.

• High force solenoids and centering springs assure consistent shifting through a wide range of pressure and silting extremes.
• Optional Mainstage Spool Position Monitoring Switch (CE marked)
• Suitable for demanding industrial or mobile applications by providing for reliable operations.
• Endurance tested to 10 million cycles and fatigue tested without failure to ensure highest reliability.
• Fatigue testing performed to NFPA specifications to ensure the highest reliability in applications requiring high flows and pressure.
• Solid cast body and cored passages for maximum strength and minimal pressure drop.
• Electrical options including coil types, connections, and wiring housings allow full compatibility and reliable performance in any system application.
• Plain, waterproof options are available to facilitate system troubleshooting or servicing.