Solenoid operated directional control valves are for directing and stopping flow at any point in a hydraulic system.
Efficient control of greater hydraulic powers without increasing solenoid power consumption.
Installed cost and space savings from higher power/weight-and-size ratios.
Installation flexibilitly resulting from choice of numerous combinations of solenoid connectors and locations
Viton seals as standard for multi-fluid capability, Nitrile seals available as a model code option.
Higher sustained machine productivity and higher uptime because of proven fatigue life and endurance, tested over 20 milion cycles
Solenoid coils can be chanaed quickly and easily without leakage from hydraulic system.
DG4V3-S/R- High Performance and Standard Performance Valves
Minimum pressure drop 2.5 bar at 30 l/min.
Range of coil connectors including DlN, Deutsch. AMP and terminal box.
Range of coil voltages and power options.. Up to 80 Wmin (21 USgpm) and up to 40 lmin (10.5 USgpm) respectively at 350 bar (5000 psi).
Offers desianers the opportunity to select the ootimum yalue package for each application.
intemational standard inteface. The valve mouning face conforms to is0 4401, size 03 and is comatble with related inteational standards
Typical application scenarios
1. DG4V-3-2C-M-U-H7-60 (NG6, two-way two-port)
Applicable scenarios:
Simple start-stop control (such as one-way movement of hydraulic cylinders).
Example: Safety door of a press machine needs to be locked and requires a quick response (action time < 50ms). Advantages:
Compact structure, low cost, suitable for infrequent operations.
2. DG4V-5-6CJ-M-U-H6-20 (NG10, three-position four-way)
Complex hydraulic motor control (such as the slewing mechanism of an excavator).
Example: Hydraulic system with neutral position disengagement (P type) to reduce energy loss.
Large flow design, supporting high-pressure conditions, enhancing control accuracy with hydraulic positioning function.
Parameter comparison for selection
Parameter DG4V-3-2C DG4V-5-6CJ
Recommended power supply type AC 110V (60Hz) DC 24V (industrial standard)
Maximum switching frequency 120 times/minute 60 times/minute
Internal leakage ≤0.1mL/min ≤0.5mL/min
Recommended filtration accuracy NAS 7 grade NAS 6 grade
Typical application pressure ≤250bar ≤315bar
Installation and maintenance precautions
1. General precautions
Flow direction indication: The arrow on the valve body should be consistent with the oil flow direction to avoid reverse installation causing pressure shock.
Electrical connection: Confirm that the coil voltage matches the power supply (e.g., AC 110V needs to be connected to a 50/60Hz power supply).
Pollution control: The system filtration accuracy should reach the recommended level and filter elements should be replaced regularly (suggested to check every 500 hours).
2. Specific maintenance for model
DG4V-3-2C:
Regularly check the valve seat sealing of the two-position two-way valve to prevent internal leakage.
Lubricate the manual operation lever (suggested to lubricate once every 6 months).
DG4V-5-6CJ:
Pay attention to whether the neutral function meets the system requirements (e.g., P type needs to confirm if it is necessary to disengage).
Ensure the cleanliness of the hydraulic fluid for the hydraulic positioning function to avoid jamming.
Common problems and solutions
Fault phenomenon DG4V-3-2C Possible causes DG4V-5-6CJ Possible causes
Valve core does not move Circuit break, insufficient voltage, valve core stuck Same as above, or insufficient hydraulic positioning pressure
Excessive leakage Sealing components aging, valve body scratch Same as above, or failure of neutral function seal
Three-position switching sluggish Not applicable (two-position valve) Electromagnet suction force insufficient, spring fatigue
Electromagnet overheating Continuous operation, poor heat dissipation Same as above, or voltage fluctuation causing frequent start-stop
Replacement and upgrade suggestions
1. DG4V-3-2C upgrade plan
Proportional control: Upgrade to DG4V-3-2C-P to achieve linear flow regulation.
Explosion-proof requirement: Select DG4V-3-2C-EX (Ex d IIC T6 certification).
2. DG4V-5-6CJ upgrade plan
High-frequency response: Replace with DG5V-5-6CJ (NG10, response time < 50ms).
Bus control: Integrate CANopen interface for digital monitoring.
