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324
2/2 Solenoid Directional Valve
Metric Cartridge – 350 bar
Normally Closed (Reverse Flow)
WSM12120ZR
Poppet Type - Pilot Operated
up to 110 l/min
up to 350 bar
When the solenoid coil is deenergized,
the valve is closed from port 2 to port 1.
In the reverse direction there is free
ow through the valve. The valve
piston opens at a differential pressure of
approx. 1.5 bar (check function).
When the solenoid coil is energized,
there is free ow through the valve in
both directions.
features
Exposed surfaces zinc-plated and corrosion-proof
All valve parts made of high-strength steel with hardened and ground
components to ensure minimal wear and extended service life
Coil seals protect the solenoid system
Wide variety of coils and connectors available
Excellent switching performance by high power HYDAC solenoid
fuNCtION
sPeCIfICatIONs
Operating pressure: max. 350 bar
Nominal ow: max. 110 l/min
Internal leakage: leakage-free (max. 5 drops/min at 350 bar)
Media operating temperature range: min. -20 °C to max. +100 °C
Ambient temperature range: min. -20 °C to max. +60 °C
Fluids: Hydraulic oil to DIN 51524 Part 1 and 2
Viscosity: min 7.4 mm²/s to max. 420 mm²/s
Filtration: Class 21/19/16 according to
ISO 4406 or cleaner
Installation: no orientation restrictions
Material: Valve body: high tensile steel
Piston: hardened and
ground steel
Seals: NBR (standard)
FKM (optional)
Back-up rings: PTFE
Cavity: 12120
Weights: Valve complete: 0.46 kg
Coil only: 0.19 kg
Electrics
Response time: Energized: approx. 30 ms
De-energized: approx. 70 ms
typical 24 V DC-coil
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 115%
of nominal voltage at max. 60 °C
ambient temperature
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PerfOrMaNCe
WSM12120ZR - 01 M - C - N - 24 DG
Basic model
Directional poppet valve,
metric cavity, Function code ZR
Type
01 = standard
Option
Omission = no option
M = manual override
Body and Ports*
C = Cartridge only
Seals
N = NBR (standard)
V = FKM (optional)
Coil voltage
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
Coil connector
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 (18") long
DN = Deutsch connector, 2 pole
AC: AG = DIN connector to EN175301-803
other connection types on request
DIMeNsIONs
Pressure drop
* Standard line bodies
Code Part No. Material Ports
R12120-10X-01 396708 Steel, zinc-plated G 3/4
R12120-10X-02 396707 Steel, zinc-plated M27 x 2
Millimetre
Subject to technical modications
CaVItY
Metric 12120
Form tools
Tool Part No.
Countersink MK3 172880
Reamer 1014207
Measured at 34 mm ²/s
T
Oil
= 46 °C
Standard models
Model code Part No.
WSM12120ZR-01-C-N-12DG 3230893
WSM12120ZR-01-C-N-24DG 3230898
WSM12120ZR-01-C-N-230AG 3230897
Flow rate
Torque 4
+2
Nm
After loosening or removing the
mounting nut, the coil can be turned
through 360° or removed
Millimetre
Subject to technical modications
HYDAC Fluidtechnik GmbH
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
NOTE:
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.
MODeL CODe
Manual override
To operate manually,
remove mounting nut and
twist button anticlockwise
Torque 70
+10
Nm
Torque 4
+2
Nm
energized
deenergized
energized
tting depth
other models on request
Seal kits
Code Part No.
Seal kit
12120-NBR 3454001
Seal kit
12120-FKM 3454002
