EDC-DZ

Valve element with direct on-off flow sharing control.

It can achieve multiple simultaneous manoeuvres by distributing the available flow to each actuator selected by the operator, independently from the working pressure required.

All simultaneous movements go on at the same reduced speed in case of flow shortage.

Each energized actuator receives a pressure compensated flow.

No shuttle valve fitted.

Control spools directly operated by screwed-in solenoids with extractable coils.

Wet pin tubes for DC coils, with push rod for mechanical override; nickel plated surface.

Manual override (push-button, screw type or lever) available upon request.

Different plug-in connectors available: see ordering details.

Size 6

Series 00

Maximum operating pressure 310 bar (4500 psi)

Maximum flow at 14 bar (206psi) 48 l/min (12.7 gpm)

Maximum flow at 18 bar (261psi) 54 l/min (15.3 gpm)

Ports connections G 1/2 - SAE8 and Modular

NEW spool position sensor available for this valve. See RE18300-30

The sandwich plate design directional valve elements L8511… are compact direct operated pressure compensated solenoid valves which control the start, the stop, the direction and the quantity of the oil flow, with a FLOW SHARING principle. These elements basically consist of a stackable housing (1) with a control spool, two solenoids (4), two return springs. When energized, each solenoid (4) displaces the control spool from its neutral-central position “0” and the metering notches are open; flow is delivered to the 3 way pressure compensator followed by a check valve for each port A and B. The compensator, balanced by the LS pressure at the opposite end, lifts up and unloads a pressure compensated flow which is sent to the A (or B) port through the relevant check valve; at the same time the opposite port allows oil return to tank.

LS pressure reaches the compensator “dead end” directly from the A or B port, while the check valves lock eventual pressure oscillations which could affect the compensator function.

When the solenoid is de-energized, the return spring pushes the spool thrust washer back against the housing and the spool returns in its neutral-central position.

Each coil (4) is fastened to the solenoid tube by a ring nut (7). A pin allows to push the spool under emergency conditions, when the solenoid cannot be energized, like in case of voltage shortage.