Solenoid valve
VZWP-L-M22C-...-P4-...
Festo AG & Co. KG
Postfach
D-73726 Esslingen
++49/711/347-0
www.festo.com
(en) Operating instructions
749 647
1007NH
Original: de
1
Design
3
7
aJ
1
aA
6
2
5
4
8
9
1
Port 1: Input
2
Valve body
3
Electrical plug connector with seal
and mounting screw
4
Knurled nut
5
O-ring
6
Solenoid coil
7
O-ring
8
Armature guiding tube
9
Port 2: Output
aJ
Arrow for flow direction
aA
Thread for mounting bracket
Fig. 1
2
Function
The solenoid valve VZWP–L–M22C–... is a servo controlled 2/2-way valve with
solenoid coil.
The solenoid valve VZWP–L–M22C–... is closed when de-energised (Normally
Closed - NC). When power is supplied, the differential pressure is relieved from the
secondary side of the piston via the servo hole. The effective differential pressure
lifts the piston away from the valve seat.
The pilot function of the valve actuator can be used to control high pressures with
large nominal diameters by means of small solenoid coils.
The minimum differential pressure must always be present to ensure smooth func-
tioning of the servo control (
Î
Technical data).
3
Application
Solenoid valves of the series VZWP–L–M22C–... are intended to control the flow of
gaseous and fluid media in rigid piping systems.
• The product may only be used in its original state without unauthorised modific-
ations. Only the mounting and commissioning activities described in these oper-
ating instructions are permissible. Do not open the valve body or dismantle the
armature guiding tube.
• Do not use the product in closed circuits.
• Do not use the VZWP solenoid valve as a safety component.
• Observe the permissible limit values and specifications (
Î
Technical data).
• Use the product only in perfect technical condition.
• Use only neutral operating media as per specification. Before using other oper-
ating media, please contact our customer support.
• Operation with chemically unstable gases, abrasive media and solids is imper-
missible.
• Use the solenoid valve only in the marked flow direction.
• Comply with all applicable national and international regulations.
4
Product variants
Features
Type code
Description
Type
VZWP
Servo controlled, solenoid actuated process valve
Valve type
L
In-line valve
Valve function
M22C
2/2-way valve, normally closed (NC), mechanical
reset
Connection to valves
and fittings
G14 to G1
Pipe thread per DIN ISO 228
N14 to N1
NPT pipe thread per ANSI B 1.20.1
Nominal size (DN)
130
250
13 mm
25 mm
Sealing material
–
V
NBR
FKM
Nominal voltage
1
2A
3A
24 V DC
110 V AC (50-60 Hz)
230 V AC (50-60 Hz)
Electrical connection
P4
Plug socket, 3-pin
Operating pressure
40
Max. 40 bar
Fig. 2
5
Transport and storage
• Ensure the following storage conditions: short storage periods in cool, dry,
shaded and corrosion resistant locations.
6
Installation
Note
• Installation only by qualified personnel.
• Electrical connection only by qualified electricians.
• Avoid contamination. In this way you will prevent small holes from becoming
blocked (e.g. servo hole) and restriction or blockage of the function.
• Avoid mechanical stresses especially on the solenoid coil and the armature
guiding tube.
• Ensure sufficient thermal circulation at the installation location.
1. Before installation, check the system requirements:
– The tubing system is unpressurised and does not hold any medium.
– The pipelines are clean.
– The ends of the pipelines are mounted.
– The power supply is switched off.
2. Put the solenoid valve in its mounting position. Please note the flow direction.
The permissible flow direction is marked by an arrow on the valve body.
3. Screw the ends of the pipelines to the valve ports. Observe the permissible
tightening torques.
4. Establish the electrical connection. Use only the specified plug type (
Î
Tech-
nical data).
– Connect the electrical cable to the plug connector.
– Attach the seal to the electrical contacts.
– Plug in the plug connector and secure it in place with the mounting screw
(torque 0.3...0.5 Nm).
5. Connect the power supply.
