DG4VL-5 Series - Low-holding current solenoid operated directional control valves - DG4VL-5-33C-M-PDE2-H-7-50-N

Mounting Orientation: To ensure sure switching of no spring detented type valves, mount valves so the spool axis is horizontal. There is no mounting
attitude restrictions for another spool/spring arrangement.

Solenoid energization: Low power efficiencies are not attained with energization times less than 0.3 seconds. The coil can be energized (ON input) while the other coil is energized but the spool will not shift. The spool will shift when input to the first energized coil is turned OFF. Solenoids should be continuously energized during circuit switching for spring-centered and offset valves. de-energization of the solenoid will cause the spool to return to the prescribed position by spring force. For no spring detented type valves, the spool will be maintained in switched position by the detent but to ensure sure circuit switching, the solenoid should be energized for more than 0.1 seconds.

T (tank) port piping:  Prevent abnormal pressure surges above the allowable back pressure rating from being generated in the T port. Valve is wet armature type so insure that valve is always filled with oil.

Using valves as two-way and three-way: valve is designed as four-way and as such max. flow is limited when used as two or three-way valves. Consult TOKIMEC for details.

Long periods of solenoid energization: Care should be paid as long periods of solenoid energization at high pressure may cause spool "sticking"  and switching malfunction.

Malfunctions due to surge pressure: Avoid combining flows of tank lines prone to surge pressures. Surge pressures in the valve T port may lead to spool malfunctions. No spring detented type valves are susceptible to such malfunctions during de-energization.

Manual operation: For manual switching, push the manual override pin. Be
aware that actuation force increases with higher back pressure.

Solenoid indicator lamp: For valves with indicator lamps, the lamps will light when current flows to the solenoid.