Festo VZWM-L, NPT Technical Data
Solenoid valves VZWM-L, NPT
Solenoid valves VZWM-L, NPT
Key features and type codes
General
Indirectly actuated diaphragm valve
Process valve connection
N14 … N2
Flow rate
1400 … 31000 l/min
Available in brass or stainless steel
casting
Wide range of coils
Type
VZWM Solenoid valve, process directional control
valve
Design
L In-line valve
Valve function
M22C 2/2-way valve, normally closed
Process valve connection
N14 NPT1/4
N38 NPT3/8
N12 NPT1/2
N34 NPT3/4
N1 NPT1
N114 NPT1 1/4
N112 NPT1 1/2
N2 NPT2
Electrical connection
F4 MD-2-With armature tube for solenoid coil
MD-2- … -PA
F5 MH-2-With armature tube for solenoid coil
MH-2- … -PA
VZWM
— L — M22C — N14 — F4 —
Housing material
R1 Stainless steel casting
Brass
2
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Subject to change – 2017/06
Solenoid valves VZWM-L, NPT
Technical data
Function
-M- Flow rate
1400 … 31000 l/min
-P- Voltage
24 V DC
110, 230 V AC
General technical data
Process valve connection NPT1/4 NPT3/8 NPT1/2 NPT3/4 NPT1 NPT1 1/4 NPT1 1/2 NPT2
Nominal size (DN) [mm] 13.5 13.5 13.5 27.5 27.5 40 40 50
Valve function 2/2-way, single solenoid
Design Diaphragm valve
Sealing principle Soft
Actuation type Electric
Reset method Pneumatic spring
Type of control Piloted
Direction of flow Non-reversible
Exhaust function No flow control
Manual override None
Type of mounting In-line installation
Mounting position Preferably vertical
Standard nominal flow rate [l/min] 1400 2100 2400 10000 11700 24000 26400 31000
Flow rate Kv [m3/h] 1.6 2 2.4 8.5 10.7 21.3 27.4 39
c value [l/sbar] 6 8.8 9.8 39 41 75 82 110
b value 0. 3 0. 3 5 0. 3 7 0. 5 0. 5 0. 6 0.67 0.68
Pressure differential [bar] 0. 5 0. 5 0. 5 0. 5 0. 5 0. 7 0. 7 0. 7
Materials Housing Brass or stainless steel casting
Diaphragm NBR
Armature tube High-alloy steel
Note on materials Contains PWIS (paint-wetting impairment substances)
Max. tightening torque Connecting thread [Nm] 35 60 105 200 350 450 540 620
Cover screw [Nm] 20 20 20 30 30 30 30 30
Coil mounting [Nm] 2 2 2 2 2 2 2 2
2017/06 – Subject to change
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