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General
Size 10 Size 16 Size 25 Size 25
1)
Size 32
Installation position Any, preferably horizontal
Ambient temperature range °F (°C) 0 ... 140 (0 ... 60)
Weight lbs 19.1 24.6 36.9 37.5 69.3
(kg) (8.7) (11.2) (16.8) (17) (31.5)
Hydraulic: measured at
p
= 1450 PSI (100 bar),
ν
= 148 SUS (32 mm
2
/s) and
t
= 140 °F (40 °C)
Operating pressure: PSI (bar) Size 10 Size 16 Size 25 Size 25
1)
Size 32
Pilot valve supply (min max) PSI (bar) 290 ... 4600 (20 ... 315)
Main valve max PSI 4600 5100 5100 3045 5100
P, A, B (bar) (315) (350) (350) (210) (350)
T-port with internal drain PSI (bar) <145 (<10) Static
T-port with external drain PSI 4600 3625 3625 3045 3625
(bar) (315) (250) (250) (210) (250)
Y-port PSI (bar) <145 (<10) Static
Nominal flow
Q
N
± 10 % at ∆
p
= 145 PSI (10 bar
2
) GPM (L/min) 6.60 (25)
13.2 (50) 33.0 (125) 58.1 (220)
26.4 (100) 52.8 (200) 92.4 (350) 132.1 (500) 158.5
(600)
Volumetric flow at main valve (max. permissible) GPM 44.9 122 230 264 423
(L/min) (170) (460) (870) (1000) (1600)
Control spool stroke (2nd stage) mm ± 3.5 ± 5 ± 6 ± 6 ± 9
Control volume flow X or Y at stepped GPM 1.7 3.6 6.7 6.7 7.0
input signal of 0 to 100 % 4600 PSI (315 bar) (L/min) (6.3) (13.7) (25.5) (25.5) (26.5)
Hydraulic fluid Petroleum oils (HM, HL, HLP)
Phosphate-ester fluids (HFD-R)
Fluid cleanliness: Maximum allowable fluid cleanliness level – class 16/13 –
18/15, according to ISO 4406. Therefore, we recommend
a filter with a minimum retention rate of
ß
10
≥ 75
Hydraulic fluid temperature range °F (°C) 50 ... 176 (10 ... 80) preferred 104 … 122 (40 … 50)
Viscosity range SUS (mm
2
/s) 97 ... 1760 (20 ... 380) preferred 141 … 208 (30 … 45)
Hysteresis % ≤ 0.2
Response sensitivity % ≤ 0.1
Electrical
Insulation (DIN 40 050) Exceeds NEMA class 4 (IP 65)
Voltage V DC 18 … 30
Power W 72
Electronic control Integral in valve, see below and page 6
Technical data (For applications outside these parameters, please consult us)
Command value: Reference potential at E and positive command value at D gives flow from P to A and B to T.
Reference potential at E and negative command value at D gives flow from P to B and A to T.
Electrical connection
1)
Model 4WRTE25 . . . 500.-3XH/ . . . (High Flow-design)
2)
∆
p
= Valve pressure differential in PSI (bar)
24 V (18 to 30 V DC)
0 V
Interlock 4 to 24 V to enable
Differential amplifier input
Command value ± 10 V
2)
Command value 0 V
Actual value ± 10 V
1)
A
D
B
C
F
E
Supply voltage
I
max
= 3 A
Surge load 4 A
1)
Signal >14 V indicates valve not ready (fault present
or not enabled correctly)
2)
Command of 0 to ±10 mA is available, specify
(SO) –280 under “further details”, R
i
= 1 kΩ
RA 29 082/06.98