Compact Directional Valves - Non-compensated and Post-compensated - Directional elements EDC Series

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

RE18301-11-order
1)
The required hydraulic layout and spool variant can be chosen by consulting page 3.
2)
With ∆P (P>A or P>B) 14 bar (203 psi).
3)
Each different option for the type of emergency chosen implies a specific ordering code (refer to page 9).
4)
See RE18301-45, RE18301-46, RE18301-47, for flangeable elements.
5)
Available only for E_spool variant.
6)
For connectors ordering code see data sheet RE 18325-90.

Symbols

RE18301-11-sym

Spool variant and Flow pattern

RE18301-11-spool
RE18301-11-functional

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.

Code
Voltage [V]
Connector type
Coil description
Marking
Coil Mat no.
OB 01
12 DC
EN 175301-803(Ex. DIN 43650)
C4501 12DC
12 DC
R933000026
OB 03
12 DC
AMP JUNIOR
C4503 12DC
12 DC
R933000027
OB 07
12 DC
DEUTSCH DT 04-2P
C4507 12DC
12 DC
R933000030
AD 01
13 DC
EN 175301-803(Ex. DIN 43650)
C4501 13DC
13 DC
R933000028
AD 03
13 DC
AMP JUNIOR
C4503 13DC
13 DC
R933000029
AD 07
13 DC
DEUTSCH DT 04-2P
C4507 13DC
13 DC
R933000031
OC 01
24 DC
EN 175301-803(Ex. DIN 43650)
C4501 24DC
24 DC
R933000034
OC 03
24 DC
AMP JUNIOR
C4503 24DC
24 DC
R933003630
OC 07
24 DC
DEUTSCH DT 04-2P
C4507 24DC
24 DC
R933000032
AC 01
27 DC
EN 175301-803(Ex. DIN 43650)
C4501 27DC
27 DC
R933000035
AC 03
27 DC
AMP JUNIOR
C4503 27DC
27 DC
R933000036
AC 07
27 DC
DEUTSCH DT 04-2P
C4507 27DC
27 DC
R933000033
OD 01
48 DC
EN 175301-803(Ex. DIN 43650)
C4501 48DC
48 DC
R933000037
OE 01
110 DC
EN 175301-803(Ex. DIN 43650)
C4501 110DC
110 DC
R933000040
OV 01
24 RAC
EN 175301-803(Ex. DIN 43650)
C4501 21.5DC
21.5 DC
R933000038
OW 01
110 RAC
EN 175301-803(Ex. DIN 43650)
C4501 98DC
98 DC
R933000039
OZ 01
230 RAC
EN 175301-803(Ex. DIN 43650)
C4501 207DC
207 DC
R933000041
General:
Valve element with 2 solenoids:
  • 3.82 kg (8.42 lbs)
Valve element with 1 solenoid:
  • 3.00 kg (6.61 lbs)
Valve element with 2 solenoids and lever type emergency:
  • 4.1 kg (9.00 lbs)
Valve element with 1 solenoid and lever type emergency:
  • 3.25 kg (7.16 lbs)
Fluid Temperature:
  • –20....+50 (-4.... +122) (NBR seals)
MTTFd:
  • 150 years see RE 18350-51
Hydraulic:
Maximum pressure at P, A and B ports:
  • 310 bar (4500 psi)
Maximum pressure at T:
  • 210 bar (3050 psi)
Maximum pressure with lever emergency at T:
  • 140 bar (2030 psi)
Maximum flow:
  • 48 l/min (12.7 gpm)
Hydraulic fluidGeneral properties: it must have physical lubricating and chemical properties suitable for use in hydraulic systems such as, for example:
  • Mineral oil based hydraulic fluids HL (DIN 51524 part 1). For use of environmentally acceptable fluids (vegetable or polyglycol base) please consult us.
Fluid Temperature:
  • –20....+80°C (-4. +176°F) (NBR seals)
Permissible degree of fluid contamination:
  • ISO 4572: βₓ≥75 X=12...15 NAS 1638: class 9
Viscosity range:
  • 5....420 mm²/s
Electrical:
Voltage type:
  • DC (AC only with RAC connection) PWM
Voltage tolerance (nominal voltage):
  • -10 .... +10%
Duty:
  • Continuous, with ambient temperature ≤ 50°C (122°F)
Coil wire temperature not to be exceeded:
  • 150°C (302°F)
Insulation class:
  • H
Compliance with:
  • Low Voltage Directive LVD 73/23/EC (2006/95/EC), 2004/108/EC
Coil weight with connection EN 175301-803:
  • 0.335 kg (0.74 lbs)
Voltage:
  • 12 V
  • 13 V
  • 24 V
  • 27 V
  • 48 V
  • 110 V
  • 24 V +RAC (21,5)
  • 110 V +RAC (98)
  • 230 V +RAC (207)
Voltage type:
  • DC
  • DC
  • DC
  • DC
  • DC
  • DC
  • AC
  • AC
  • AC
Power consumption:
  • 33 W
  • 31 W
  • 33 W
  • 33 W
  • 33 W
  • 35 W
  • 33 W
  • 33 W
  • 35 W
Nominal 100% current:
  • 2.8 A
  • 2.30 A
  • 1.40 A
  • 1.20 A
  • 0.7 A
  • 0.32 A
  • 1.60 A
  • 0.34 A
  • 0.16 A
Coil resistance (nominal at 20°C (68°F)):
  • Note: For applications with different specifications consult us
  • 4.24 Ω
  • 5.42 Ω
  • 17 Ω
  • 21.8 Ω
  • 69.8 Ω
  • 341.8 Ω
  • 13.6 Ω
  • 285 Ω
  • 1229 Ω

Nominal flow Qnom=Qnom (∆P ls)

RE18301-11-nominal-flow

LS drain

RE18301-11-ls-drain

Version: pressure drop ∆p = ∆p(Q) (PIN- POUT) to the next section

RE18301-11-press-drop

Performances limits

RE18301-11-per-limits
Spool Variant
Curve no
B2S8, E2S8, B3S8, E3S8, B4S8, E4S8, B2I8, E2I8, B3I8, E3I8, B4I8, E4I8
1
B2S9, E2S9, B3S9, E3S9, B4S9, E4S9, B2I9, E2I9, B3I9, E3I9, B4I9, E4I9
2

The performance curves are measured with flow going across and coming back, like P>A and B>T. With “lever type” emergency control, the performance limits are slightly lower.

RE18301-11-dim1
1
Solenoid tube Ø19mm (0.75 inch).
2
Plug for 2position version (4/2).
3
Ring nut for coil locking (Ø26.5mm).Torque 6-7 Nm (4.4-5.2 ft-lb).
4
Flange specifications for coupling to ED intermediate elements.
5
For tie road and tightening torque information see data sheet RE 18301-90.
6
Clearance needed for connector removal.
7
A and B ports.
8
Identification label.
9
Optional push-button manual override, 0P type, for spool opening: it is pressure stuck to the ring nut for coil locking.Mat no. R933000043.
10
Optional screw type manual override, 0F type, for spool opening: it is screwed (torque 6-7 Nm (4.4-5.2ft-lb) to the tube as replacement of the coil ring nut. Mat no. R933007215.
11
Four threaded holes M5 deepth 12mm (0.47 inch) for fitting a secondary flangeable element. Bolts M5 with recommended strength class DIN8.8: torque 5-6 Nm (3.6-4.4 ft-lb) (only for version with modular secondary valves).

RE18301-11-dim2
1
Ordering Details: HA (if fitted to side A) or HB (if fitted to side B)
2
Ordering Details: VA (if fitted to side A) or VB (if fitted to side B)
3
Ordering Details: H1 (if fitted to side A) or H9 (if fitted to side B)
4
Ordering Details: V1 (if fitted to side A) or V9 (if fitted to side B)
5
Ordering Details: XA (if fitted to side A) or XB (if fitted to side B)
6
Ordering Details: X1 (if fitted to side A) or X9 (if fitted to side B)
RE18301-11-elec-conn