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Spool valve
Spool valve

GENERAL SPECIFICATIONS ACTUATION
Designation 4/2-, 4/3-spool valve Solenoid spool valve direct operated
Mounting Flange construction Data sheet 1.3-28
Nominal size NG10 according to ISO 4401-05 WDZFA04-AB1 / AB2 for 4/2-way AB1 / AB2
WDZFA04-AD1 / DB2 for other 4/2-way
Ambient temperature -25…+45 °C (operation as T6) WDZFA04-ADB for 4/3-way with spring centred mid position
-25…+60 °C (operation as T1…T5) WDZFA04-ADB for 4/2-way impulse execution detented
Weight 5,4 kg (1 K-solenoid)
7,6 kg (2 K-solenoids)
MTTFd 150 years

HYDRAULIC SPECIFICATIONS ELECTRICAL SPECIFICATIONS
Working pressure p = 350 bar Protection class IP65
max
Tank pressure p T max = 160 bar (type of pilot operation Relative duty factor Continuous operation
te, pi, ae and xi) Switching frequency 1'800 / h
p T max = 100 bar (type of pilot operation ti, Service life time 10 (number of switching cycles,
7
pe and xe) theoretically)
Pilot pressure p v min : 8…14 bar, see performance limits Voltage tolerance ± 10 % with regard to nominal voltage
p v max = 350 bar for connection X (control Limiting current at I = 90 mA (100 Ω execuiton)
min
plate) 50 °C I = 64 mA (152 Ω execuiton)
min
p v max = 200 bar for connection X Temperature class T1…T6
(mounting interface) Coil resistance 100 Ω, 152 Ω
Pressure pilot oil drain minimum lower by p
v min Minimum power P = 0,81 W (100 Ω execution)
Maximum volume flow Q = 160 l/min min
max consumption P = 0,62 W (152 Ω execution)
Leakage oil See characteristic and pilot valves min
Fluid Mineral oil, other fluid on request Note! Other electrical specifications, recommended power
Viscosity range 12 mm /s…320 mm /s supply and safety-related limits see data sheet 1.1-185
2
2
Temperature range -25…+45 °C (operation as T6, NBR)
fluid -20…+45 °C (operation as T6, FKM)
-25…+60 °C (operation as T1…T5, NBR)
-20…+60 °C (operation as T1…T5, FKM)
Contamination Class 20 / 18 / 14
efficiency
Filtration Required filtration grade ß 10…16 ≥ 75,
see data sheet 1.0-50

MANUAL OVERRIDE CERTIFICATES
HB4,5 as standard Surface Mining
gas and dust
ATEX x x
IECEx x x
The certificates can be found on www.wandfluh.com

www.wandfluh.com Illustrations are not binding Data subject to change 3/6 Edition: 20 09 1.9-40 E
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