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326
2/2 Directional Poppet Valve
Solenoid-Operated,
Pilot Operated, Normally Closed
SAE 8-Cartridge – 350 bar
WS08BR-31
z All exposed surfaces zinc-plated and corrosion-proof
z All valve parts made of high-strength steel with hardened and ground components to
ensure minimal wear and extended service life
z Excellent stability throughout ow range
z Excellent dynamic performance
z Coil seals protect the solenoid system
z Wide variety of connections available
z Low pressure drop due to CFD optimized ow-path
Operating pressure: max. 350 bar
Nominal ow: max. 40 l/min
Internal leakage: Leakage-free (<5 drops/min at 350 bar)
Media operating temperature range: min. -30 °C to max. +100 °C
Ambient temperature range: min. -30 °C to max. +60 °C
Fluid: Hydraulic oil to DIN 51524 Part 1 + 2
Viscosity: min. 7.4 mm²/s to max. 420 mm²/s
Filtration: Class 21/19/16 to ISO 4406
or cleaner
MTTF
d
: 150 years
Installation: No orientation restrictions
Materials: Valve body: high-tensile steel
Piston: hardened and
ground steel
Seals: NBR (standard)
FKM (optional, temperature
range to -20 °C)
Back-up rings: PTFE
Cavity: FC08-2
Weight: Valve complete 0.33 kg
Coil only 0.19 kg
Type of voltage: DC solenoid, AC voltage is rectied
using a bridge rectier built into the coil
Current draw at 20 °C: 1.5 A at 12 V DC; 0.8 A at 24 V DC
Voltage tolerance: ± 15% of nominal
Coil duty rating: Continuous up to max. 115%
of nominal voltage at
max. 60° C ambient temperature
Switching time: On: approx. 20 ms
Off: approx. 80 ms
Coil type: Coil... –40-1836
The directional valve WS08BR is a pilot-
operated, normally closed, spring-loaded
poppet-type valve. When de-energized,
the valve blocks ow from port 1 to port 2
and acts as a check allowing ow from 2 to
1. When energized, the valve allows ow
in both directions.
Up to 40 l/min
Up to 350 bar
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327
Directional valve, metric
31 = standard
(spanner width 24 metric)
Omission = no option
M = manual override
C = cartridge only
Combinations with body on request
N = NBR (standard)
V = FKM (optional)
DC: 12 = 12 V DC
24 = 24 V DC
AC: 115 = 115 V AC
(internally full wave rectied)
230 = 230 V AC
(internally full wave rectied)
Other voltages on request
DC: DG = DIN connector to EN175301-803
DT = AMP Junior Timer, 2 pole, radial
DK = Kostal threaded connector M27 x 1
DL = leadwires (2), 475mm long
DN = Deutsch connector, axial
AC: AG = DIN connector to EN175301-803
Other connections on request
FC08-2
WS08BR-31-C-N-24DG 3554847
WS08BR-31-C-N-230AG 3554848
Other models on request
FH082-SB3 560919 Steel, zinc-plated 3/8 BSP 420 bar
FH082-AB3 3011423 Aluminium, clear anodized 3/8 BSP 245 bar
Other line bodies on request
FS082-N SEAL KIT NBR 3033920
FS082-V SEAL KIT FKM 3051756
Countersink MK3 175473
Reamer 175474
Flow rate l/min
Pressure drop [bar]
2 to 1 energized
2 to 1
1 to 2 energized
Torque 4
+2
Nm
hex SW 24 metric
torque 25
+5
Nm
3/4-16UNF-2B
After loosening knurled nut, coil
can be rotated through 360° and
removed
Justus-von-Liebig-Str.
D-66280 Sulzbach/Saar
Tel: 0 68 97 / 509-01
Fax: 0 68 97 / 509-598
E-Mail: utec@hydac.com
The information in this brochure relates to
the operating conditions and applications
described.
For applications or operating conditions
not described, please contact the relevant
technical department.
Subject to technical modications.
Measured at n = 33 mm²/s, T
oil
= 46 C
Millimeter (Inch)
Subject to technical modications
Millimeter (Inch)
Subject to technical modications
Manual override
After removing mounting nut,
manual override is possible by
twisting button counter-clockwise
thick
