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Solenoid operated spool valve
Solenoid operated spool valve

GENERAL SPECIFICATIONS HYDRAULIC SPECIFICATIONS
Designation 4/2-, 4/3-spool valve Working pressure p max = 350 bar (p < 20 bar)
T
Construction Direct operated p max = 315 bar (p > 20 bar)
T
Mounting Flange construction Tank pressure p Tmax = 160 bar
Nominal size NG4-Mini according to Wandfluh Maximum volume flow Q = 30 l/min, see characteristic
max
standard Leakage oil See characteristics
Actuation Ex-protection switching solenoid Fluid Mineral oil, other fluid on request
Ambient temperature Operation as T6 Viscosity range 12 mm /s…320 mm /s
2
2
-25…+40 °C (L9) Temperature range Operation as T6
Operation as T4 fluid NBR -25…+40 °C (L9)
-25…+90 °C (L9) FKM -20…+40 °C (L9)
-25…+70 °C (L15 / L17) Operation as T4
-40…+70 °C (L15 / L17) NBR -25…+70 °C (L9 or L15 / L17)
Weight 2,6 kg (1 solenoid) FKM -20…+70 °C (L9 or L15 / L17)
4,4 kg (2 solenoids) NBR 872 -40…+70 °C (L15 / L17)
MTTFd 150 years Contamination Class 20 / 18 / 14
efficiency
Filtration Required filtration grade ß 10…16 ≥ 75,
see data sheet 1.0-50

ELECTRICAL SPECIFICATIONS MANUAL OVERRIDE
Protection class IP65 / 66 / 67 HB6 as standard
Relative duty factor 100 % DF Optionally: HN (K)
Switching frequency 12'000 / h → see data sheet 1.1-311
Voltage tolerance ± 10 % with regard to nominal voltage
Standard nominal 12 VDC, 24VDC, 115 VAC, 230 VAC SURFACE TREATMENT
voltage AC = 50 to 60 Hz ± 2 %, with built-in ◆ The valve body is painted with a two component paint
two-way rectifier ◆ The armature tube, the slip-on coil and the plug screw are
Standard nominal 9 W, 15 W, 17 W zinc-nickel coated
power
Temperature class Nominal power 9 W: T1…T6 COMMISSIONING
Nominal power 15 W / 17 W: T1…T4
Attention! The solenoid coil must only be put into operation, if the
Note! Other electrical specifications see data sheet 1.1-183 requirements of the operating instructions supplied are
and 1.1-184 observed to their full extent. In case of non-observance,
no liability can be assumed.

PERFORMANCE SPECIFICATIONS
Oil viscosity u = 30 mm /s
2

p = f (Q) Performance limits L15 / L17 p = f (Q) Performance limits L9
Measured with nominal voltage -10% at 50 °C Measured with nominal voltage -10% at 40 °C
Standard Execution L9 90 °C on request
p [bar] ADB/BEA/AFB p [bar] AFB AB1
350 K1027 350 K1026 AB3/ACB
300 AB1/AB3 300 ADB/AGB
ACB/AGB
250 250
200 200
150 150 BEA
100 100
50 50
0 0
0 5 10 15 20 25 30 Q [l/min] 0 5 10 15 20 Q [l/min]

www.wandfluh.com Illustrations are not binding Data subject to change 3/5 Edition: 21 18 1.3-24 E
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