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302
2/2 Solenoid Directional Valve
Poppet Type - Pilot Operated
Normally Closed
Metric Cartridge Valve - 350 bar
WSM12120Z
up to 110 l/min
up to 350 bar
In the de-energized mode, the valve is
closed from port 2 to port 1.
In the reverse direction there is free ow
through the valve. The valve opens at
a differential pressure of approx. 1.5 bar
(check function).
When energized, there is free ow
through the valve from port 2 to port 1.
Flow in the reverse direction is severely
restricted.
GENERAL
All surfaces zinc-plated and corrosion-proof.
Minimal wear and long service life due to hardened and ground valve compon-
ents.
Coil seals protect the solenoid system
Wide variety of connectors available
Rigid design using one-piece body minimises the effect of eccentricities in cavity
and maximises reliability.
Excellent switching performance by high power Hydac solenoid.
Low pressure drop due to CFD optimised ow-path.
FuNctioN
SPEciFicAtioNS
Operating pressure: max. 350 bar
Nominal ow: max. 110 l/min
Internal leakage: leakage-free
Media operating temp. range: min. -20 °C to max. +120 °C
Ambient temperature range: min. -20 °C to max. +60 °C
Operating uid: hydraulic oil to DIN 51524 Part 1 and 2
Viscosity range: min 7.4 mm²/s to max. 420 mm²/s
Filtration: max. permissible contamination level
of the operating uid to ISO 4406
Class 21/19/16 or cleaner
Installation: optional
Materials: valve body: high tensile steel
piston: hardened and ground
steel
seals: NBR (standard)
FKM (optional)
back-up rings: PTFE
Cavity: 12120
Weight: Valve complete: 0.46 kg
Coil only: 0.19 kg
Response time: on: approx. 35 ms
off: approx. 70 ms
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 voltage
Switch-on time: 100% (continuous) up to max. 115% of
the nominal voltage at 60°C ambient
temperature
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PERFoRMANcE
WSM 12120 Z - 01 M - C - N - 24 DG
Designation
Directional poppet valve, metric
Cavity
12120 = 2-way cavity
Function code
Type
01 = standard
Manual override
no details = without manual override
M = with manual override
Body and Ports
C = cartridge only
Seals
N = NBR (standard)
V = FKM (optional)
Coil voltage
DC: 12 = 12 Volt DC
24 = 24 Volt DC
AC: 115 = 115 Volt AC (bridge rectier built into the coil)
230 = 230 Volt AC (bridge rectier built into the coil)
other voltages on request
Coil connectors
DC: DG = DIN connector to EN175301-803
DK = KOSTAL threaded connection
DL = connector with 2 ying leads, 0.75 mm
2
DN = Deutsch connector
DT = AMP Junior Timer, 2-pole, radial
AC: AG = DIN connector to EN175301-803
other connection types on request
diMENSioNS
Pressure drop
Inline connection housings
Code Part no. Material Ports
R12120-10X-01 396708 Steel, zinc-plated G 3/4
R12120-10X-02 396707 Steel, zinc-plated M 27 x 2
Millimetre
Subject to technical modications
cAVitY
Metric 12120
Cartridge form tools
Tool Part no.
Countersink MK3 172880
Reamer 1014207
measured at n = 34 mm²/s, T
oil
= 46 °C
Standard models
Model code Part no.
WSM12120Z-01-C-N-12DG 3230865
WSM12120Z-01-C-N-24DG 3230870
WSM12120Z-01-C-N-230AG 3230869
other models on request
Flow rate
Torque 4
+2
Nm
After loosening or removing the
mounting nut, the coil can be turned
through 360° and removed
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 techni-
cal department.
Subject to technical modications.
ModEL codE
Manual override
To operate manually,
remove mounting nut and
twist button anticlockwise
Torque 70
+10
Nm
energized
non-energized
tting depth
Millimetre
Subject to technical modications
