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Proportional spool valve
Proportional spool valve Proportional spool valve

TYPE CODE HYDRAULIC SPECIFICATIONS MANUAL OVERRIDE
WD B F A06 - - - / / - # 1 Working pressure p = 350 bar HB4,5 as standard
max
Spool valve, direct operated Tank pressure p = 160 bar Optionally: HN (K)
T max → see data sheet 1.1-311
Proportional, explosion proof execution Ex d Maximum volume flow Q max = 35 l/min, see characteristics
Nominal volume flow Q = 5 l/min, 10 l/min, 16 l/min, 25 l/min
N
Flange construction Leakage oil On request SURFACE TREATMENT
International standard interface ISO, NG6 Hysteresis L15 / 70°C: ≤ 10 % at optimal dither ◆ The valve body is painted with a two component paint
signal The armature tube, the slip-on coil and the plug screw are
Designation of symbols acc. to table L9 / 40°C: ≤ 12 % at optimal dither signal ◆ zinc-nickel coated
L9 / 90°C: ≤ 14 % at optimal dither signal
Nominal volume flow Q N 5 l/min 5
10 l/min 10 Fluid Mineral oil, other fluid on request
16 l/min 16 Viscosity range 12 mm /s…320 mm /s STANDARDS
2
2
25 l/min 25 Temperature range Operation as T6
fluid NBR -25…+40 °C (L9) Explosion protection Directive 2014 / 34 / EU (ATEX)
Nominal voltage U N 12 VDC G12 Flameproof enclosure EN / IEC / UL 60079-1, 31
24 VDC G24 FKM -20…+40 °C (L9) Cable entry EN 60079-0, 1, 7, 15, 31
Operation as T4
Ambient temperature up to: NBR -25…+70 °C (L9 or L15 / L17) Mounting interface ISO 4401-03
Nominal power P N 9 W L9 40 °C or 90 °C FKM -20…+70 °C (L9 or L15 / L17) Protection class EN 60 529
15 W L15 70 °C Contamination ISO 4406
17 W L17 70 °C (only UL / CSA) Contamination Class 18 / 16 / 13
efficiency efficiency
Certification ATEX, IECEx, CCC, EAC Filtration Required filtration grade ß 6…10 ≥ 75,
Australia AU UL / CSA UL see data sheet 1.0-50 SEALING MATERIAL
MA MA
NBR or FKM (Viton) as standard, choice in the type code
Sealing material NBR Attention! With the execution L9 for ambient temperatures up to 90
FKM (Viton) D1 °C (L9/90 °C), Q is not reached
N
Amplifier M248

Design index (subject to change)
1.10-88

GENERAL SPECIFICATIONS ELECTRICAL SPECIFICATIONS PERFORMANCE SPECIFICATIONS
Designation Proportional spool valve Protection class IP65 / 66 / 67 Oil viscosity u = 30 mm /s
2
Construction Direct operated Relative duty factor 100 % DF Q = f (p) Volume flow pressure characteristics Q = f (p) Volume flow pressure characteristics
Mounting Flange construction Voltage tolerance ± 10 % with regard to nominal voltage I = I I = I
G
G
Nominal size NG6 according to ISO 4401-03 Standard nominal 12 VDC, 24 VDC Measured at 50 °C Measured at 50 °C
Actuation Ex-protection proportional solenoid voltage ACB-S, AC1-S, CB2-S ACB-S, AC1-S, CB2-S
Ambient temperature Operation as T6 Limiting current at… °C L15 / L17 / 70 °C: Execution L15 / L17 Execution L9
-25…+40 °C (L9) I = 445 mA (U = 24VDC) Q [l/min] Q [l/min]
N
G
Operation as T4 I = 890 mA (U = 12VDC) 35 K1074 25 K1081
G
N
-25…+90 °C (L9) L9 / 40 °C: 30 Q N = 25 l/min
-25…+70 °C (L15 / L17) I = 305 mA (U = 24VDC) 25 Q N = 25 l/min 20 Q N = 16 l/min
G
N
Weight 2,8 kg (1 solenoid) I = 610 mA (U = 12VDC) 20 Q N = 16 l/min 15
G
N
4,8 kg (2 solenoids) L9 / 90 °C: 15 10 Q N = 10 l/min
MTTFd 150 years I = 265 mA (U = 24VDC) 10 Q N = 10 l/min 5 Q N = 5 l/min
N
G
Q N = 5 l/min
5
I = 530 mA (U = 12VDC) 0 0
N
G
Standard nominal 9 W, 15 W, 17 W 0 50 100 150 200 250 300 350 p [bar] 0 50 100 150 200 250 300 350 p [bar]
power
Temperature class Nominal power 9 W: T1…T6
Nominal power 15 W / 17 W: T1…T4
Note! Other electrical specifications see data sheet 1.1-183
and 1.1-184

www.wandfluh.com Illustrations are not binding Data subject to change 2/6 Edition: 21 18 1.10-88 E www.wandfluh.com Illustrations are not binding Data subject to change 3/6 Edition: 21 18 1.10-88 E
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