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2/2 Directional Poppet Valve
Solenoid-Operated,
Direct Acting
Normally Closed
Metric Cartridge – 210 bar
WSM16520W
z Main application is in fast-switching applications e.g. in injection moulding machines
z High ow at low ∆p
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 Low pressure drop due to CFD optimized ow-path
Operating pressure: max. 210 bar
Nominal ow: max. 100 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. +50 °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: hardened steel
Piston: hardened and
ground steel
Seals: NBR (standard)
FKM (optional, temperature
range to -20 °C)
Back-up rings: PTFE
Cavity: Metric 16520
Weight: Valve complete 2.05 kg
Coil only 1.05 kg
Type of voltage: DC solenoid, AC voltage can be rectied
using a bridge rectier plug, e.g. ZW4
(not supplied)
Current draw at 20 °C: 2.9 A at 12 V DC; 1.45 A at 24 V DC
Voltage tolerance: ± 15% of nominal
Coil duty rating: Continuous up to max. 115%
of nominal voltage at
max. 50° C ambient temperature
Response time: Energized: ≈ 70 ms
De-energized: ≈ 50 ms
Coil type: Coil... –75-3164
The WSM16520W is a direct acting
directional poppet valve – de-energized,
the valve is closed in both directions.
When the solenoid is energized, the valve
opens and allows ow in both directions.
Caution: No orice is to be placed just
before port 1. Only "diffuser orices" may
be used.
Up to 100 l/min
Up to 210 bar