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340
2/2 Solenoid Directional Valve
Poppet Type - Pilot Operated
Normally Open
Metric Cartridge Valve – 350 bar
WSM12120Y
up to 110 l/min
up to 350 bar
In the de-energized mode, there is free
ow through the valve from port 2 to
port 1. Flow in the reverse direction is
severely restricted.
When energized, the valve is closed
from port 2 to port 1.
In the reverse direction there is free ow
through the valve if the hydraulic force
on the piston exceeds the solenoid force
(approx. 9 to 20 bar).
GENERAL
All surfaces zinc-plated and corrosion-proof.
Minimal wear and long service life due to hardened and ground valve
components.
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 temperature 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: 0.49 kg
Coil only: 0.19 kg
Response time: on: approx. 90 ms
off: approx. 25 ms
Type of voltage: DC solenoid, AC voltage is rectied
using a bridge rectier 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 the nominal voltage
Switch-on time: 100% (continuous) up to max. 115% of
the nominal voltage at 60 °C
ambient temperature
2
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PERFORMANCE
WSM 12120 Y - 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 V DC
24 = 24 V DC
AC: 115 = 115 V AC (bridge rectier built into the coil)
230 = 230 V AC (bridge rectier built into the coil)
other voltages on request
Coil connectors
DC: DG = DIN plug to EN175301-803
DK = KOSTAL threaded connection
DL = plug with 2 ying leads, 0.75 mm
2
DN = Deutsch plug
DT = AMP Junior Timer, 2-pole, radial
AC: AG = DIN plug 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
modications
Cartridge form tools
Tool Part no.
Countersink MK3 172880
Reamer 1014207
Measured at n = 33 mm²/s, T
Oil
= 46 °C
Standard models
Model code Part no.
WSM12120Y-01-C-N-12DG 3230826
WSM12120Y-01-C-N-24DG 3230834
WSM12120Y-01-C-N-230AG 3230833
other models on request
Flow rate
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
technical department.
Subject to technical modications.
MODEL CODE
Manual override
With rubber cap in
HNBR
hex. SW 32
Torque 70
+10
Nm
tting depth
Torque 4
+2
Nm
2 ≥ 1
energized
CAVITY
Metric 12120
Millimetre
Subject to technical
modications