EDC-P1

Valve element with direct proportional flow sharing control.

It can achieve the simultaneous activation of different actuators by distributing the available flow proportionally to the speeds selected by the operator.

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

Each energized actuator receives a pressure compensated flow.

• No shuttle valve fitted.

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

Manual override (push-button, screw type or lever) available as option.

Different plug-in connectors available: see ordering details.

Size 6

Series 00

Maximum operating pressure 310 bar (4500 psi)

Maximum flow at 14 bar (203 psi) 59 l/min (15.59 gpm)

Maximum flow at 18 bar (261 psi) 65 l/min (17.17 gpm)

Ports connections planned G 3/8 - G 1/2 - SAE8 and Modular

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

The sandwich plate design directional valve elements L8581… are compact direct operated pressure compensated proportional 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. Energized by an electronic feed regulator, each solenoid (4) displaces the control spool from its neutral-central position “0” proportionally to the current received. When the spool is shifted and the metering notch is open, flow delivery starts and is controlled by a 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 regulated 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 the 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.