EDBZ

Valve elements with 4 ways and 3, or 2, positions.

Control spools directly operated by solenoids with removable coils.

In the de-energized condition, the control spool is held in the central position by return springs.

Wet pin tubes for DC coils, with push rod for mechanical override; burnish surface treatment.

Coils can be rotated 360° around the tube.

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

Size 4

Series 00

Maximum operating pressure 310 bar (4500 psi)

Maximum flow 25 l/min (6.6 gpm)

Port connections G 3/8 SAE6 - M16x1.5

1) The required hydraulic symbol and spool variant can be chosen by consulting page 3.

2) For connectors ordering code see data sheet RE 18325-90.

3) Without secondary valve (versions B80__; B84__), the standard configuration corresponds to “0”.

The secondary valves have a maximum flow capacity of 6 l/min (1.6 gpm).

The sandwich plate design directional valve elements B8_08… are very compact direct operated solenoid valves which control the start, the stop and the direction of the oil flow. These elements basically consist of a stackable housing (1) with a control spool (2), one or two solenoids (5), and one or two return springs (4). When energized, the force of the solenoid (5) pushes the control spool (2) from its neutral-central position “0” to the required end position “a” or “b”, and the required flow from P to A (with B to T), or P to B (with A to T) is achieved. Once the solenoid is de-energized, the return spring (4) pushes the spool thrust washer (3) back against the housing and the spool returns in its neutral-central position.

Each coil is fastened to the solenoid tube by a ring nut (6). A pin (7) allows to push the spool (2) in emergency conditions, when the solenoid cannot be energized, like in case of voltage shortage.

The performance curves are measured with flow going across and coming back, like P>A and B>T, with symmetrical flow areas.

In case of special circuit connections, the performance limits can change.