DG4S4-01-60-S*** Design Soft Shift Solenoid Operated Directional Control Valve
The DG4S4-01-60-S*** directional control is a solenoid operated, 4-way, soft-shift valve having a unique five-chamber design. The spool end land configuration isolates the core tube volume from the valve’s tank cavity. This volume is displaced through an orifice in each solenoid armature to increase the shift and dropout periods. System shock is greatly reduced by metering the flow across the special spool land as well as spool modulation produced by the armature orifice. The valve terminal box contains a bridge rectifier, allowing alternating current to be applied directly to the valve. Therefore, the solenoid winding senses only direct current, eliminating the “in-rush” characteristic of a standard AC solenoid.
Features & Benefits
Low cost alternative to pilot-operated and proportional valves.
Mounts interchangeable with any NFPA D05, CETOP 5, ISO 05 valve.
Conventional direct-solenoid operated valve design with contoured spool and controlled solenoid shift speed.
Available in single or double solenoid configurations.
Wet armature solenoids for quieter operation and long life with no dynamic seals to leak.
Rectifier is housed in the terminal junction box and is protected from moisture and dirt.
Coil has plug-in construction and is held on by a nut enabling quick coil voltage interchange or service, without breaking into the hydraulic envelope.
DC solenoid prevents coil burnout during controlled rate of solenoid shift. Conventional alternating input current is converted to direct current through a rectifier located in the terminal box. For example: 110-120 50/60V AC and 220-240 50/60V AC are converted to 105V DC and 214V DC, respectively.
A larger diameter spool combined with five-chamber body core passages results in lower pressure drop.
Milled metering notches on the spool enable precise control of flow rate change as the spool is shifted.
Four-land spool permits manufacturing of a consistently rounder spool for better balance in the bore and lower spool wear and less leakage.
Five-chamber body design isolates the tank passages from the core tube so that pressure spikes or surges are not transmitted to the solenoid core tube.
NFPA fatique pressure rated at 250 bar (3600 psi)
Easily interchangeable orifice plugs allow for fine tuning of valve shift time to each application.