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Proportional spool valve
Proportional spool valve

HYDRAULIC SPECIFICATIONS MANUAL OVERRIDE
Working pressure p = 350 bar HB4,5 as standard
max
Tank pressure p = 160 bar Optionally: HN (K)
T max → see data sheet 1.1-311
Maximum volume flow Q = 35 l/min, see characteristics
max
Nominal volume flow Q = 5 l/min, 10 l/min, 16 l/min, 25 l/min
N
Leakage oil On request SURFACE TREATMENT
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
L9 / 40°C: ≤ 12 % at optimal dither signal zinc-nickel coated
L9 / 90°C: ≤ 14 % at optimal dither signal
Fluid Mineral oil, other fluid on request
Viscosity range 12 mm /s…320 mm /s STANDARDS
2
2
Temperature range Operation as T6 Explosion protection Directive 2014 / 34 / EU (ATEX)
fluid NBR -25…+40 °C (L9) Flameproof enclosure EN / IEC / UL 60079-1, 31
FKM -20…+40 °C (L9)
Operation as T4 Cable entry EN 60079-0, 1, 7, 15, 31
NBR -25…+70 °C (L9 or L15 / L17) Mounting interface ISO 4401-03
FKM -20…+70 °C (L9 or L15 / L17) Protection class EN 60 529
Contamination Class 18 / 16 / 13 Contamination ISO 4406
efficiency efficiency
Filtration Required filtration grade ß 6…10 ≥ 75,
see data sheet 1.0-50 SEALING MATERIAL
NBR or FKM (Viton) as standard, choice in the type code
Attention! With the execution L9 for ambient temperatures up to 90
°C (L9/90 °C), Q is not reached
N

PERFORMANCE SPECIFICATIONS
Oil viscosity u = 30 mm /s
2
Q = f (p) Volume flow pressure characteristics Q = f (p) Volume flow pressure characteristics
I = I G I = I G
Measured at 50 °C Measured at 50 °C
ACB-S, AC1-S, CB2-S ACB-S, AC1-S, CB2-S
Execution L15 / L17 Execution L9
Q [l/min] Q [l/min]
35 K1074 25 K1081
30 Q N = 25 l/min 20 Q N = 25 l/min
25 Q N = 16 l/min
20 Q N = 16 l/min 15
15 10
10 Q N = 10 l/min Q N = 10 l/min
5 Q N = 5 l/min 5 Q N = 5 l/min
0 0
0 50 100 150 200 250 300 350 p [bar] 0 50 100 150 200 250 300 350 p [bar]

www.wandfluh.com Illustrations are not binding Data subject to change 3/6 Edition: 21 18 1.10-88 E
Page 387