Festo VZWF Technical Data
Solenoid valves VZWF, force pilot operated, NPT
Solenoid valves VZWF, force pilot operated, NPT
Key features and overview
Function
Normally closed solenoid valve
with diaphragm and forced lifting.
When the solenoid is energised,
the differential pressure from the
secondary side of the diaphragm is
reduced via the servo hole. The
effective differential pressure lifts
General Application Design Advantages
-N- Connecting thread
1/4 NPT … 2 NPT
-M- Flow rate Kv
1.8 … 28 m3/h
the diaphragm away from the valve
seat. If there is no differential
pressure, the diaphragm is lifted
directly by the solenoid. The valve
opens and closes without a differ
ential pressure between the inlet
and outlet.
Suitable for closed applications
such as cooling or filling systems
Vacuum
Liquid gas
Bottling systems
Diaphragm valves
Forced lifting of the valve
diaphragm
2/2-way valve, normally closed
Choice of sealing materials for
different fields of applications
Medium pressure 0 bar or higher
-H- Note
The valves are suitable for vacuum
with Pabs 100 mbar. Please
ensure the direction of flow corres
ponds to the direction of the arrow.
Version Type Process valve connection Nominal size (DN) Process valve nominal
pressure (PN)
VZWF-… 1/4 NPT 13.5 40 4
3/8 NPT 13.5
1/2 NPT 13.5
3/4 NPT 27.5
1 NPT 27.5
VZWF-… 1 1/4 NPT 40 40 8
1 1/2 NPT 40
2 NPT 50
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Subject to change – 2017/02
Solenoid valves VZWF, force pilot operated, NPT
Type codes
VZWF – B – L – M22C – N14 – 135 – V – 2AP4 – 10 – R1
Type
VZWF Solenoid valve, force pilot operated
Product version
– Standard
B Optimised function
Type of directional control valve
L In-line valve
Valve function
M22C 2/2-way valve, normally closed
Process valve connection
N14 1/4 NPT
N38 3/8 NPT
N12 1/2 NPT
N34 3/4 NPT
N1 1 NPT
N114 1 1/4 NPT
N112 1 1/2 NPT
N2 2 NPT
Nominal size (DN)
135 13.5 mm
275 27.5 mm
400 40 mm
500 50 mm
Sealing material
– Standard (NBR)
E EPDM
V FPM
Nominal operating voltage
1 24 V DC
2A 110 V AC/50-60 Hz
3A 230 V AC/50-60 Hz
Electrical connection
P4 Plug socket, 3-pin
Medium pressure
6 Max. 6 bar
10 Max. 10 bar
Corrosion protection
– Standard (brass)
R1 Stainless steel
2017/02 – Subject to change
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Solenoid valves VZWF, force pilot operated, NPT
Technical data – Connecting thread 1/4 NPT … 1 NPT
Function
-M- Flow rate Kv
1.8 … 11 m3/h
-N- Connecting thread
1/4 NPT … 1 NPT
General technical data
Process valve connection 1/4 NPT 3/8 NPT 1/2 NPT 3/4 NPT 1 NPT
Nominal size (DN) 13.5 13.5 13.5 27.5 27.5
Valve function 2/2-way, single solenoid, closed
Design Diaphragm valve, force pilot operated
Type of mounting In-line installation
Actuation type Electric
Manual override None
Mounting position Solenoid vertical
Sealing principle Soft
Direction of flow Non-reversible
Max. viscosity [mm2/s] 22
Protection class IP 65
Product weight [g] 1000 1500
4
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Subject to change – 2017/02
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