4 27 Zero Differential Pressure Type Pilot Operated 2 Port Solenoid Valve

4 27 Zero Differential Pressure Type Pilot Operated 2 Port Solenoid Valve
Zero Differential Pressure Type
Pilot Operated 2 Port Solenoid Valve
Air
Oil
Water
Compact
Lightweight
Height
Weight
4 %Smaller
∗
(4 mm)
RoHS
Heated water High temperature oil
¡Can be used at 0 m hydraulic head!
¡Min. operating pressure differential: 0 MPa
(When the valve opens.)
MPa
27%Lighter
∗
(150 g)
(VXZ24, C37 (Brass) body)
(VXZ23, Resin body)
0.02
Pilot operated/VXD
∗ Comparison with SMC conventional model
−4
New
0
Conventional
New
model
mm
Zero differential pressure type
pilot operated/VXZ
VXZ23
VXZ
Air
Body material
∗
Aluminium,
Resin∗ (Built-in One-touch fittings)
(New VXZ)
Bracket
Standard equipment
Applicable tubing O.D.
ø10, ø12
Metric size
ø3/8"
Inch size
93 mm
97 mm (Conventional model)
∗ VXZ23
Air
Enclosure
IP65
Valve type
N.C.
Resin body
Water
Aluminium body
Oil
Heated water High temperature oil
Body material
C37 (Brass),
Stainless steel (VXZ23 to 26)
N.O.
∗
∗ Electrical entry
"Faston" type
terminal is IP40.
C37 (Brass) body
Stainless steel body
Series VXZ
CAT.EUS70-51A-UK
Zero Differential Pressure Type Pilot Operated 2 Port Solenoid Valve Series VXZ
Air
Water
Oil
Heated water High temperature oil
Clearance
By providing a buffer and clearance,
we reduced the collision sound of the
core when ON (when the valve is
open). Because of the clearance,
when using highly viscous fluids such
as oil, the armature does not get stuck
and the responsiveness when OFF
(when the valve is closed) is improved.
Enclosure
IP65
Improved armature
durability
Flame resistance
UL94V-0 conformed
Low-noise
construction
Impact noise reduced
by the rubber buffer
Piping variations
Thread piping, One-touch fitting
Body material
Aluminium, Resin Air (VXZ2A3 )
Water/
Oil/Air/
C37 (Brass), Stainless steel
Heated water/
High temperature oil
Built-in full-wave rectifier type (AC specification)
Improved durability
Service life is extended by a special construction.
(compared with current AC specification)
Reduced buzz noise
Rectified to DC by a full-wave rectifier, resulting in a
buzz noise reduction.
Improved OFF response
Specially constructed to improve the OFF response
when operated with a higher viscosity fluid such as oil.
Low-noise construction
Specially constructed to reduce impact noise
during operation.
Variations
<Fluid>
<Body Size>
Applicable fluid∗
Model
Air
Water
Oil
Heated water
High temperature oil
Model
Body
size
Orifice diameter
mmø
For Air
VXZ2첸0
P.4
VXZ2 A3
10A
Port size
Body
material
1/4, 3/8
Aluminium
ø10, ø12, ø3/8"
Resin
C37 (Brass)
1/4, 3/8
Stainless steel
P.7
For Oil
VXZ2첸3
P.10
For Heated water
VXZ2첸5
P.13
For High
temperature oil
VXZ2첸6
Air
10
For Water
VXZ2첸2
Fluid
P.16
∗ For details, refer to pages 35 and 36.
Features 1
C37 (Brass)
VXZ2 B4
15A
VXZ2 C5
20A
VXZ2 D6
25A
15
Air
Water
Oil
Heated water
1/2
Stainless steel
C37 (Brass)
20
3/4
Stainless steel
C37 (Brass)
25
High temperature oil
1
Stainless steel
Common Specifications ································································ P. 2
Selection Steps ················································································· P. 3
Specifications
Series VXZ
Model/Valve Specifications, Fluid and Ambient Temperature, Valve Leakage ····· P. 4, 5
How to Order ············································································· P. 6
For Air
For Air
How to Order ············································································· P. 9
For Oil
Model/Valve Specifications, Fluid and Ambient Temperature, Valve Leakage ·· P. 10, 11
How to Order ··········································································· P. 12
For Oil
Model/Valve Specifications, Fluid and Ambient Temperature, Valve Leakage ····· P. 7, 8
For Water
For Water
How to Order ············································································ P. 15
For High Temperature Oil
Model/Valve Specifications, Fluid and Ambient Temperature, Valve Leakage ··· P. 16, 17
How to Order ············································································ P. 18
For High
Temperature Oil
Model/Valve Specifications, Fluid and Ambient Temperature, Valve Leakage ··· P. 13, 14
For Heated Water
For Heated Water
Dimensions
For Air, Water, Oil
Body material: Resin···························································· P. 22
Body material: Aluminium, C37 (Brass), Stainless steel ··· P. 24
For Heated Water, High Temperature Oil
Body material: C37 (Brass), Stainless steel ············ P. 26
Replacement Parts ········································································ P. 27
Glossary of Terms ········································································· P. 28
Solenoid Valve Flow-rate Characteristics ·························· P. 29
Flow-rate Characteristics ··························································· P. 34
Specific Product Precautions ··················································· P. 35
Safety Instructions ······························································· Back cover
1
Construction
Construction······················································································ P. 20
Options
Other Special Options·································································· P. 19
Dimensions
INDEX
Zero Differential Pressure Type
Pilot Operated 2 Port Solenoid Valve
Series VXZ
Common Specifications
Standard Specifications
Valve construction
Zero differential pressure type pilot operated 2 port diaphragm type
Withstand pressure
2.0 MPa (Resin body type 1.5 MPa)
Aluminium, Resin, C37 (Brass), Stainless steel Note 1)
Body material
Valve
specifications Seal material
NBR, FKM, EPDM
Dust-tight, Water-jet-proof type (equivalent to IP65) Note 2)
Enclosure
Environment
Location without corrosive or explosive gases
AC
Rated voltage
24 VAC, 48 VAC, 100 VAC, 110 VAC, 200 VAC, 220 VAC, 230 VAC, 240 VAC
DC
12 VDC, 24 VDC
±10% of rated voltage
Allowable voltage fluctuation
Coil
specifications Allowable leakage AC (Built-in full-wave rectifier type)
voltage
DC
10% or less of rated voltage
2% or less of rated voltage
Class B (for air, water, oil), Class H (for heated water, high temperature oil)
Coil insulation type
Note 1) Aluminium body and resin body are available only for the VXZ2 A3.
Note 2) Electrical entry “Faston” type terminal is IP40.
Be sure to read “Specific Product Precautions” before handling.
When pressure differential is less than 0.01 MPa, operation may become unstable. Please contact SMC in case of low flow
operation. (Refer to page 21.)
Solenoid Coil Specifications
Normally Closed (N.C.)
Normally Open (N.O.)
DC Specification
DC Specification
Class B
Model
VXZ23, 24
VXZ25, 26
Class B
Power consumption [W] Note 1) Temperature rise [°C] Note 2)
7
55
10.5
65
Class H
Model
VXZ23, 24
VXZ25, 26
Model
Power consumption [W] Note 1) Temperature rise [°C] Note 2)
VXZ2A, 2B
VXZ2C, 2D
8.5
70
12.5
70
Class H
Power consumption [W] Note 1) Temperature rise [°C] Note 2)
12
100
15
100
Model
Power consumption [W] Note 1) Temperature rise [°C] Note 2)
VXZ2A, 2B
VXZ2C, 2D
12
100
15
100
Note 1) Power consumption, Apparent power: The value at ambient temperature of 20°C and when the rated voltage is applied. (Variation: ±10%)
Note 2) The value at ambient temperature of 20°C and when the rated voltage is applied. The value depends on the ambient environment. This is for
reference.
Normally Closed (N.C.)
Normally Open (N.O.)
AC Specification (Built-in Full-wave Rectifier Type)
AC Specification (Built-in Full-wave Rectifier Type)
Class B
Class B
Model
VXZ23, 24
VXZ25, 26
Apparent power [VA] Note 1) 2) Temperature rise [°C] Note 3)
9.5
12
70
70
Class H
Model
VXZ23, 24
VXZ25, 26
Model
VXZ2A, 2B
VXZ2C, 2D
Apparent power [VA] Note 1) 2) Temperature rise [°C] Note 3)
10
70
14
70
Class H
Apparent power [VA] Note 1) 2) Temperature rise [°C] Note 3)
12
100
15
100
Model
VXZ2A, 2B
VXZ2C, 2D
Apparent power [VA] Note 1) 2) Temperature rise [°C] Note 3)
12
100
15
100
Note 1) Power consumption, Apparent power: The value at ambient temperature of 20°C and when the rated voltage is applied. (Variation: ±10%)
Note 2) There is no difference in the frequency and the inrush and energized apparent power, since a rectifying circuit is used in the AC (Built-in full-wave
rectifier type).
Note 3) The value at ambient temperature of 20°C and when the rated voltage is applied. The value depends on the ambient environment. This is for
reference.
2
Series VXZ
Specifications
Selection Steps
Selection Steps
Page
Symbol
Air
Page 4
0
Water
Page 7
2
Oil
Page 10
3
Heated water
Page 13
5
High
temperature oil
Page 16
6
q
VXZ2 3 0 A A
For Water
Select the fluid.
Selection item
q
For Oil
Item
For Air
Step 1 Select the fluid.
Step 2 Select “Body material”, “Port size” and “Orifice diameter” from “Flow rate — Pressure” of each fluid.
Symbol
Body size, Valve 10A, N.C.
3
w
A
e
Body material Aluminium
Port size
1/8
Orifice diameter
10
For Heated Water
Select from “Flow
rate — Pressure.”
¡ Body material
¡ Port size
¡ Orifice diameter
Selection item
e
VXZ2 3 0 A A
w
For High
Temperature Oil
Item
Step 3 Select electrical specification.
Voltage
Symbol
24 VDC
A
Electrical entry Grommet
r
VXZ2 3 0 A A
Options
Select electrical
specification.
Selection item
r
Construction
Item
Dimensions
Step 4 For other options, refer to each "How to Order".
3
Series VXZ
For Air
∗ Can be used with low vacuum (up to 133 Pa.abs).
Flow-rate Characteristics
N.C.
Symbol
2
1
When the valve is closed, flow is blocked from
port 1 to port 2. However, if the pressure in port
2 is higher than port 1, the valve will not be able
to block the fluid and it will flow from port 2 to
port 1.
Normally Closed (N.C.)
Min. operating Max. operating pressure
differential [MPa]
pressure
differential Note 1)
AC
DC
[MPa]
Flow-rate characteristics
Body
material
Port size
(Nominal
diameter)
ø10
6.2
Resin
ø3/8"
5.3
Orifice diameter
[mmø]
ø12
Aluminium
C37 (Brass),
Stainless
steel
10
Model
VXZ230
0.7
1/4 (8A)
0
3/8 (10A)
1/2 (15A)
15
3/4 (20A)
20
1 (25A)
25
1.0
VXZ240
VXZ250
VXZ260
1.0
C
[dm3/(s·bar)]
b
Max. system
pressure
Effective area
[MPa]
[mm2]
Cv
Note 2)
Weight
[g]
1.7
0.38
8.0
1.2
2.0
400
8.5
0.44
2.4
9.3
0.43
2.6
23.0
0.34
6.0
720
36.0
0.26
9.4
1100
—
1.5
185
—
1300
Note 1) The operation of the valve may be unstable due to the capacity of the pressure supply source such as pumps and compressors or the pressure loss by
the orifice of piping. Please contact SMC to check if the required valve size can be used in the application. Please contact SMC for the compatibility of
the circuit flow and valve size. (Refer to page 21.)
Note 2) Weight of grommet type. Add 10 g for conduit, 30 g for DIN terminal, and 60 g for conduit terminal type respectively.
¡Refer to “Glossary of Terms” on page 28 for details on the max. operating pressure differential.
Fluid and Ambient Temperature
Valve Leakage Rate
Internal Leakage
Fluid temperature [°C]
−10
Note)
Ambient temperature [°C]
to 60
Note) Dew point temperature: −10°C or less
Leakage rate (Air) Note 1)
Seal material
−20 to 60
15
NBR, FKM
cm3/min
or less (Aluminium body type)
15 cm3/min or less (Resin body type)
1 cm3/min or less (Metal body type)
External Leakage
Seal material
Leakage rate (Air) Note 1)
15 cm3/min or less (Aluminium body type)
NBR, FKM
15 cm3/min or less (Resin body type)
1 cm3/min or less (Metal body type)
Note 1) Leakage is the value at ambient temperature 20°C.
Note 2) When the product is used with low vacuum (to 133 Pa.abs), give
caution to the external leakage outlined above.
4
Zero Differential Pressure Type
Pilot Operated 2 Port Solenoid Valve
Series VXZ
Specifications
For Air
Flow-rate Characteristics
For Air
N.O.
Symbol
For Water
2
1
Normally Open (N.O.)
Flow-rate characteristics
6.2
ø3/8"
5.3
10
ø12
Aluminium
C37 (Brass),
Stainless
steel
Model
VXZ2A0
1/4 (8A)
0
15
3/4 (20A)
20
1 (25A)
25
b
0.7
VXZ2B0
VXZ2C0
VXZ2D0
0.6
Cv
Note 2)
Weight
[g]
1.7
0.38
1.2
430
2.0
8.0
3/8 (10A)
1/2 (15A)
C
[dm3/(s·bar)]
Max. system
pressure
Effective area
[MPa]
[mm2]
8.5
0.44
2.4
9.3
0.43
2.6
23.0
0.34
6.0
750
36.0
0.26
9.4
1150
—
—
1.5
185
For High
Temperature Oil
ø10
Resin
Orifice diameter
[mmø]
630
1350
Note 1) The operation of the valve may be unstable due to the capacity of the pressure supply source such as pumps and compressors or the pressure loss by
the orifice of piping. Please contact SMC to check if the required valve size can be used in the application. Please contact SMC for the compatibility of
the circuit flow and valve size. (Refer to page 21.)
Note 2) Weight of grommet type. Add 10 g for conduit, 30 g for DIN terminal, and 60 g for conduit terminal type respectively.
¡Refer to “Glossary of Terms” on page 28 for details on the max. operating pressure differential.
Fluid and Ambient Temperature
Valve Leakage Rate
Internal Leakage
−10
Note)
Ambient temperature [°C]
to 60
Note) Dew point temperature: –10°C or less
Leakage rate (Air) Note 1)
Seal material
−20 to 60
15
NBR, FKM
cm3/min
or less (Aluminium body type)
15 cm3/min or less (Resin body type)
Dimensions
Fluid temperature [°C]
1 cm3/min or less (Metal body type)
External Leakage
Seal material
Leakage rate (Air) Note 1)
15 cm3/min or less (Aluminium body type)
NBR, FKM
Options
Port size
(Nominal
diameter)
Construction
Min. operating Max. operating pressure
differential [MPa]
pressure
differential Note 1)
AC
DC
[MPa]
Body
material
For Heated Water
For Oil
When the valve is closed, flow is blocked from
port 1 to port 2. However, if the pressure in port
2 is higher than port 1, the valve will not be able
to block the fluid and it will flow from port 2 to
port 1.
15 cm3/min or less (Resin body type)
1 cm3/min or less (Metal body type)
Note 1) Leakage is the value at ambient temperature 20°C.
5
Series VXZ
For Air
RoHS
How to Order (Single Unit)
VXZ2 3 0 A A A
Fluid
0
Size/Valve type
Symbol Body size
3
A
4
B
10A
15A
5
C
20A
6
D
25A
N.C.
N.C.
N.O.
N.C.
N.O.
N.C.
N.O.
With bracket
Orifice
diameter
No
Yes
Note) Bracket is standardised with the resin
body type. No need to add "XB".
Body
material
Symbol
A
B
C
D
E
F
G
Port size
10
∗ The bracket for aluminium, C37 (Brass)
and stainless steel body type is shipped
together with the product, but not
assembled.
1/4
Aluminium
3/8
ø10 One-touch fitting
Resin
ø3/8" One-touch fitting
ø12 One-touch fitting
C37 (Brass)
1/2
Stainless steel
Other options
15
Symbol
—
H
J
Stainless steel
K
L
Stainless steel
C37 (Brass)
3/4
20
1
25
C37 (Brass)
Note 1) VXZ2A0 only possible with other options with one-touch fitting (–, C, H and Z).
Note 2) If you need a valve for air of C37 (Brass) or stainless steel in the port size of
1/4 or 3/8, use the valve for water.
Voltage/Electrical entry (coil insulation type: Class B)
6
—
XB
Body material/Port size/Orifice diameter
Valve
type
N.O.
For Air
Electrical
entry
Symbol
Voltage
A
B
C
D
E
F
G
H
J
K
L
M
N
P
Q
R
S
T
U
V
W
Y
Z1A
Z1B
Z1C
Z1U
Z1D
24 VDC
100 VAC
110 VAC
200 VAC
230 VAC
24 VDC
24 VDC
100 VAC
110 VAC
200 VAC
230 VAC
24 VDC
100 VAC
110 VAC
200 VAC
230 VAC
24 VDC
100 VAC
110 VAC
200 VAC
230 VAC
24 VDC
48 VAC
220 VAC
240 VAC
24 VAC
12 VDC
Z1E
12 VDC
Z1F
Z1G
Z1H
Z1V
Z1J
Z1K
Z1L
Z1M
48 VAC
DIN terminal
220 VAC
(With surge
240 VAC
voltage
24 VAC
suppressor)
12 VDC
48 VAC
Conduit terminal
220 VAC
(With surge
240 VAC voltage suppressor)
Grommet
Grommet
(With surge
voltage
suppressor)
DIN terminal
(With surge
voltage
suppressor)
Conduit terminal
(With surge
voltage
suppressor)
Conduit
(With surge
voltage
suppressor)
Faston terminal
Grommet
(With surge
voltage
suppressor)
Grommet
Grommet
(With surge
voltage suppressor)
Symbol
Voltage
Z1W
Z1N
Z1P
Z1Q
Z1R
Z1Y
Z1S
Z1T
Z2A
Z2B
Z2C
Z2D
Z2E
Z2F
Z2G
Z2H
Z2V
Z2J
Z2K
Z2L
Z2M
Z2N
Z2P
Z2Q
Z2R
Z2S
Z2W
Z2T
Z3A
Z3B
Z3C
Z3D
Z3E
Z3F
Z3G
Z3H
Z3V
Z3J
24 VAC
12 VDC
48 VAC
220 VAC
240 VAC
24 VAC
12 VDC
12 VDC
24 VDC
100 VAC
110 VAC
200 VAC
230 VAC
48 VAC
220 VAC
240 VAC
24 VAC
12 VDC
24 VDC
100 VAC
110 VAC
200 VAC
230 VAC
48 VAC
220 VAC
240 VAC
24 VAC
12 VDC
24 VDC
100 VAC
110 VAC
200 VAC
230 VAC
48 VAC
220 VAC
240 VAC
24 VAC
12 VDC
Electrical
entry
Conduit terminal (With
surge voltage suppressor)
Conduit
(With surge
voltage
suppressor)
Faston terminal
A
B
C
D
E
F
G
H
K
L
Z
Seal
Oil-free
Port thread
material Note 1)
— Rc, With one-touch fitting Note 2)
NBR
G
NBR
—
NPT
FKM
— Rc, With one-touch fitting Note 2)
G
NBR
쑗
NPT
G
FKM
—
NPT
Rc, With one-touch fitting Note 2)
FKM
G
쑗
NPT
NBR
쑗 Rc, With one-touch fitting Note 2)
Note 1) For low concentration ozone resistant, select
seal material FKM.
Note 2) One-touch fittings are attached to the resin body
type.
For other special options,
refer to page 19.
EPDM specification
Special electrical entry direction
DIN terminal
(With surge
voltage
suppressor,
with light)
Conduit terminal
(With surge
voltage
suppressor,
with light)
DIN terminal
(With surge
voltage
suppressor,
without DIN
connector)
Dimensions → Page 22 and after
Zero Differential Pressure Type
Pilot Operated 2 Port Solenoid Valve
Series VXZ
Specifications
For Water
∗ Can be used with air (Up to 133 Pa.abs for vacuum).
Note that the maximum operating pressure differential and flow-rate
characteristics should be within the specifications for air.
Flow-rate Characteristics
For Air
N.C.
Symbol
For Water
2
1
Body
Port size
Orifice diameter
[mmø]
material (Nominal diameter)
1/4 (8A)
C37 (Brass),
Stainless
steel
Min. operating pressure Max. operating pressure differential [MPa] Flow-rate characteristics
differential Note 1) [MPa]
AC
DC
Av x 10−6 m2
Cv
Model
10
VXZ232
1/2 (15A)
15
3/4 (20A)
20
1 (25A)
25
VXZ242
VXZ252
VXZ262
3/8 (10A)
0.7
0
1.0
1.0
Max. system Weight Note 2)
[g]
pressure [MPa]
46
1.9
58
2.4
130
5.3
220
9.2
1100
245
10.2
1300
600
1.5
720
Note 1) The operation of the valve may be unstable due to the capacity of the pressure supply source such as pumps and compressors or the pressure loss by
the orifice of piping. Please contact SMC to check if the required valve size can be used in the application. Please contact SMC for the compatibility of
the circuit flow and valve size. (Refer to page 21.)
Note 2) Weight of grommet type. Add 10 g for conduit, 30 g for DIN terminal, and 60 g for conduit terminal type respectively.
¡Refer to “Glossary of Terms” on page 28 for details on the max. operating pressure differential.
Valve Leakage Rate
Options
Fluid and Ambient Temperature
Ambient temperature [°C]
Seal material
Leakage rate (Water) Note 1)
1 to 60
−20 to 60
NBR, FKM
0.1 cm3/min or less
External Leakage
Seal material
Leakage rate (Water) Note 1)
NBR, FKM
0.1 cm3/min or less
Note 1) Leakage is the value at ambient temperature 20°C.
Dimensions
Note) With no freezing
Construction
Internal Leakage
Fluid temperature [°C]
For High
Temperature Oil
Normally Closed (N.C.)
For Heated Water
For Oil
When the valve is closed, flow is blocked from
port 1 to port 2. However, if the pressure in port
2 is higher than port 1, the valve will not be able
to block the fluid and it will flow from port 2 to
port 1.
7
Series VXZ
For Water
Flow-rate Characteristics
N.O.
Symbol
2
1
When the valve is closed, flow is blocked from
port 1 to port 2. However, if the pressure in port
2 is higher than port 1, the valve will not be able
to block the fluid and it will flow from port 2 to
port 1.
Normally Open (N.O.)
Body
Port size
Orifice diameter
[mmø]
material (Nominal diameter)
1/4 (8A)
C37 (Brass),
Stainless
steel
Min. operating pressure Max. operating pressure differential [MPa] Flow-rate characteristics
differential Note 1) [MPa]
AC
DC
Av x 10−6 m2
Cv
Model
10
VXZ2A2
1/2 (15A)
15
3/4 (20A)
20
1 (25A)
25
VXZ2B2
VXZ2C2
VXZ2D2
3/8 (10A)
0
0.7
0.6
Max. system Weight Note 2)
[g]
pressure [MPa]
46
1.9
58
2.4
130
5.3
220
9.2
1150
245
10.2
1350
630
1.5
750
Note 1) The operation of the valve may be unstable due to the capacity of the pressure supply source such as pumps and compressors or the pressure loss by
the orifice of piping. Please contact SMC to check if the required valve size can be used in the application. Please contact SMC for the compatibility of
the circuit flow and valve size. (Refer to page 21.)
Note 2) Weight of grommet type. Add 10 g for conduit, 30 g for DIN terminal, and 60 g for conduit terminal type respectively.
¡Refer to “Glossary of Terms” on page 28 for details on the max. operating pressure differential.
Fluid and Ambient Temperature
Valve Leakage Rate
Internal Leakage
Fluid temperature [°C]
1 to 60
Note) With no freezing
Ambient temperature [°C]
−20 to 60
Seal material
NBR, FKM
Leakage rate (Water)
0.1
cm3/min
or less
External Leakage
Seal material
NBR, FKM
Leakage rate (Water)
0.1
cm3/min
Note 1)
or less
Note 1) Leakage is the value at ambient temperature 20°C.
8
Note 1)
Zero Differential Pressure Type
Pilot Operated 2 Port Solenoid Valve
Series VXZ
For Water
RoHS
Specifications
How to Order (Single Unit)
VXZ2 3 2 A A A
Fluid
For Water
—
XB
6
D
N.C.
N.O.
25A
F
G
Stainless steel
H
J
Stainless steel
K
L
N.C.
N.O.
Stainless steel
C37 (Brass)
C37 (Brass)
C37 (Brass)
Stainless steel
1/4
3/8
1/4
10
—
1/2
3/4
1
15
20
25
Voltage/Electrical entry (coil insulation type: Class B)
Symbol
Voltage
Electrical
entry
A
B
C
D
E
F
G
H
J
K
L
M
N
P
Q
R
S
T
U
V
W
Y
Z1A
Z1B
Z1C
Z1U
Z1D
24 VDC
100 VAC
110 VAC
200 VAC
230 VAC
24 VDC
24 VDC
100 VAC
110 VAC
200 VAC
230 VAC
24 VDC
100 VAC
110 VAC
200 VAC
230 VAC
24 VDC
100 VAC
110 VAC
200 VAC
230 VAC
24 VDC
48 VAC
220 VAC
240 VAC
24 VAC
12 VDC
Z1E
12 VDC
Z1F
Z1G
Z1H
Z1V
Z1J
Z1K
Z1L
Z1M
48 VAC
DIN terminal
220 VAC
(With surge
240 VAC
voltage
24 VAC
suppressor)
12 VDC
48 VAC
Conduit terminal
220 VAC
(With surge
240 VAC voltage suppressor)
Grommet
Grommet
(With surge
voltage
suppressor)
DIN terminal
(With surge
voltage
suppressor)
Conduit terminal
(With surge
voltage
suppressor)
Conduit
(With surge
voltage
suppressor)
Faston terminal
Grommet
(With surge
voltage
suppressor)
Grommet
Grommet
(With surge
voltage suppressor)
Symbol
Z1W
Z1N
Z1P
Z1Q
Z1R
Z1Y
Z1S
Z1T
Z2A
Z2B
Z2C
Z2D
Z2E
Z2F
Z2G
Z2H
Z2V
Z2J
Z2K
Z2L
Z2M
Z2N
Z2P
Z2Q
Z2R
Z2S
Z2W
Z2T
Z3A
Z3B
Z3C
Z3D
Z3E
Z3F
Z3G
Z3H
Z3V
Z3J
Voltage
24 VAC
12 VDC
48 VAC
220 VAC
240 VAC
24 VAC
12 VDC
12 VDC
24 VDC
100 VAC
110 VAC
200 VAC
230 VAC
48 VAC
220 VAC
240 VAC
24 VAC
12 VDC
24 VDC
100 VAC
110 VAC
200 VAC
230 VAC
48 VAC
220 VAC
240 VAC
24 VAC
12 VDC
24 VDC
100 VAC
110 VAC
200 VAC
230 VAC
48 VAC
220 VAC
240 VAC
24 VAC
12 VDC
Other options
Symbol
3/8
Electrical
entry
Conduit terminal (With
surge voltage suppressor)
Conduit
(With surge
voltage
suppressor)
Faston terminal
For Water
20A
N.C.
N.O.
C37 (Brass)
∗ The bracket is shipped together with the
product, but not assembled.
Orifice diameter
A
B
C
D
E
F
G
H
K
L
Z
Seal
Oil-free
material Note)
—
NBR
NBR
—
FKM
—
NBR
쑗
FKM
—
FKM
쑗
NBR
쑗
Port thread
Rc
G
NPT
Rc
G
NPT
G
NPT
Rc
G
NPT
Rc
For Oil
5
C
N.O.
Port size
For Heated Water
15A
A
B
C
D
N.C.
10A
4
B
Symbol Body material
Note) For low concentration ozone resistant and
deionised water, select seal material FKM.
For High
Temperature Oil
3
A
Valve type
For other special options,
refer to page 19.
EPDM specification
Special electrical entry direction
Options
Symbol Body size
Body material/Port size/Orifice diameter
DIN terminal
(With surge
voltage
suppressor,
with light)
Construction
Size/Valve type
No
Yes
For Air
With bracket
Conduit terminal
(With surge
voltage
suppressor,
with light)
Dimensions
2
DIN terminal
(With surge
voltage
suppressor,
without DIN
connector)
Dimensions → Page 24 and after
9
Series VXZ
When the fluid is oil.
For Oil
The kinematic viscosity must not exceed 50 mm2/s.
The special construction of the armature adopted in the
built-in full-wave rectifier type gives an improvement in
OFF response by providing clearance on the absorbed
surface when it is switched ON.
∗ Can be used with air and water.
Note that the maximum operating pressure differential and
flow-rate characteristics should be within the specifications
of the fluid used.
Flow-rate Characteristics
N.C.
Symbol
2
1
When the valve is closed, flow is blocked from
port 1 to port 2. However, if the pressure in port
2 is higher than port 1, the valve will not be able
to block the fluid and it will flow from port 2 to
port 1.
Normally Closed (N.C.)
Orifice diameter
Body
Port size
[mmø]
material (Nominal diameter)
1/4 (8A)
C37 (Brass),
Stainless
steel
Min. operating pressure Max. operating pressure differential [MPa] Flow-rate characteristics
differential Note 1) [MPa]
AC
DC
Av x 10−6 m2
Cv
Model
10
VXZ233
1/2 (15A)
15
3/4 (20A)
20
VXZ243
VXZ253
VXZ263
3/8 (10A)
0
0.7
46
1.9
58
2.4
130
5.3
220
9.2
Max. system Weight Note 2)
[g]
pressure [MPa]
600
1.5
720
1100
1 (25A)
25
10.2
1300
245
Note 1) The operation of the valve may be unstable due to the capacity of the pressure supply source such as pumps and compressors or the pressure loss by
the orifice of piping. Please contact SMC to check if the required valve size can be used in the application. Please contact SMC for the compatibility of
the circuit flow and valve size. (Refer to page 21.)
Note 2) Weight of grommet type. Add 10 g for conduit, 30 g for DIN terminal, and 60 g for conduit terminal type respectively.
¡Refer to “Glossary of Terms” on page 28 for details on the max. operating pressure differential.
Fluid and Ambient Temperature
Valve Leakage Rate
Internal Leakage
Fluid temperature [°C]
Ambient temperature [°C]
Seal material
Leakage rate (Oil) Note)
-5 Note) to 60
−20 to 60
FKM
0.1 cm3/min or less
Note) Kinematic viscosity: 50
mm2/s
or less
External Leakage
Seal material
Leakage rate (Oil) Note)
FKM
0.1 cm3/min or less
Note) Leakage is the value at ambient temperature 20°C.
10
Zero Differential Pressure Type
Pilot Operated 2 Port Solenoid Valve
Series VXZ
Specifications
For Oil
Flow-rate Characteristics
For Air
N.O.
Symbol
For Water
2
1
Normally Open (N.O.)
1/4 (8A)
C37 (Brass),
Stainless
steel
Min. operating pressure Max. operating pressure differential [MPa] Flow-rate characteristics
differential Note 1) [MPa]
AC
DC
Av x 10−6 m2
Cv
Model
10
VXZ2A3
1/2 (15A)
15
3/4 (20A)
20
VXZ2B3
VXZ2C3
VXZ2D3
3/8 (10A)
0
0.7
0.6
46
1.9
58
2.4
130
5.3
220
9.2
Max. system Weight Note 2)
[g]
pressure [MPa]
630
1.5
750
1150
Fluid and Ambient Temperature
Options
1 (25A)
25
10.2
245
1350
Note 1) The operation of the valve may be unstable due to the capacity of the pressure supply source such as pumps and compressors or the pressure loss by
the orifice of piping. Please contact SMC to check if the required valve size can be used in the application. Please contact SMC for the compatibility of
the circuit flow and valve size. (Refer to page 21.)
Note 2) Weight of grommet type. Add 10 g for conduit, 30 g for DIN terminal, and 60 g for conduit terminal type respectively.
¡Refer to “Glossary of Terms” on page 28 for details on the max. operating pressure differential.
Valve Leakage Rate
Ambient temperature [°C]
Seal material
Leakage rate (Oil) Note)
−5 Note) to 60
−20 to 60
FKM
0.1 cm3/min or less
or less
External Leakage
Seal material
Leakage rate (Oil) Note)
FKM
0.1 cm3/min or less
Note) Leakage is the value at ambient temperature 20°C.
Dimensions
Note) Kinematic viscosity: 50
mm2/s
Construction
Internal Leakage
Fluid temperature [°C]
For High
Temperature Oil
Orifice diameter
Body
Port size
[mmø]
material (Nominal diameter)
For Heated Water
For Oil
When the valve is closed, flow is blocked from
port 1 to port 2. However, if the pressure in port
2 is higher than port 1, the valve will not be able
to block the fluid and it will flow from port 2 to
port 1.
11
Series VXZ
For Oil
RoHS
How to Order (Single Unit)
VXZ2 3 3 A A A
Common Specifications
Seal material
Fluid
3
Size/Valve type
Symbol Body size
3
A
4
B
15A
5
C
20A
6
D
25A
Symbol Body material
A
B
C
D
N.C.
10A
With bracket
For Oil
—
XB
N.O.
N.C.
N.O.
N.C.
N.O.
N.C.
N.O.
Port size
C37 (Brass)
Stainless steel
F
G
Stainless steel
H
J
Stainless steel
K
L
Stainless steel
C37 (Brass)
C37 (Brass)
C37 (Brass)
Orifice diameter
Other options
1/4
3/8
1/4
No
Yes
∗ The bracket is shipped together with the
product, but not assembled.
Body material/Port size/Orifice diameter
Valve type
FKM
10
Symbol Oil-free
—
3/8
1/2
15
3/4
20
1
25
A
B
D
E
Z
—
—
쑗
쑗
Port thread
Rc
G
NPT
G
NPT
Rc
For other special options,
refer to page 19.
Special electrical entry direction
Voltage/Electrical entry (coil insulation type: Class B)
12
Electrical
entry
Symbol
Voltage
A
B
C
D
E
F
G
H
J
K
L
M
N
P
Q
R
S
T
U
V
W
Y
Z1A
Z1B
Z1C
Z1U
Z1D
24 VDC
100 VAC
110 VAC
200 VAC
230 VAC
24 VDC
24 VDC
100 VAC
110 VAC
200 VAC
230 VAC
24 VDC
100 VAC
110 VAC
200 VAC
230 VAC
24 VDC
100 VAC
110 VAC
200 VAC
230 VAC
24 VDC
48 VAC
220 VAC
240 VAC
24 VAC
12 VDC
Z1E
12 VDC
Z1F
Z1G
Z1H
Z1V
Z1J
Z1K
Z1L
Z1M
48 VAC
DIN terminal
220 VAC
(With surge
240 VAC
voltage
24 VAC
suppressor)
12 VDC
48 VAC
Conduit terminal
220 VAC
(With surge
240 VAC voltage suppressor)
Grommet
Grommet
(With surge
voltage
suppressor)
DIN terminal
(With surge
voltage
suppressor)
Conduit terminal
(With surge
voltage
suppressor)
Conduit
(With surge
voltage
suppressor)
Faston terminal
Grommet
(With surge
voltage
suppressor)
Grommet
Grommet
(With surge
voltage suppressor)
Symbol
Voltage
Z1W
Z1N
Z1P
Z1Q
Z1R
Z1Y
Z1S
Z1T
Z2A
Z2B
Z2C
Z2D
Z2E
Z2F
Z2G
Z2H
Z2V
Z2J
Z2K
Z2L
Z2M
Z2N
Z2P
Z2Q
Z2R
Z2S
Z2W
Z2T
Z3A
Z3B
Z3C
Z3D
Z3E
Z3F
Z3G
Z3H
Z3V
Z3J
24 VAC
12 VDC
48 VAC
220 VAC
240 VAC
24 VAC
12 VDC
12 VDC
24 VDC
100 VAC
110 VAC
200 VAC
230 VAC
48 VAC
220 VAC
240 VAC
24 VAC
12 VDC
24 VDC
100 VAC
110 VAC
200 VAC
230 VAC
48 VAC
220 VAC
240 VAC
24 VAC
12 VDC
24 VDC
100 VAC
110 VAC
200 VAC
230 VAC
48 VAC
220 VAC
240 VAC
24 VAC
12 VDC
Electrical
entry
Conduit terminal (With
surge voltage suppressor)
Conduit
(With surge
voltage
suppressor)
Faston terminal
DIN terminal
(With surge
voltage
suppressor,
with light)
Conduit terminal
(With surge
voltage
suppressor,
with light)
DIN terminal
(With surge
voltage
suppressor,
without DIN
connector)
Dimensions → Page 24 and after
Zero Differential Pressure Type
Pilot Operated 2 Port Solenoid Valve
Series VXZ
Specifications
For Heated Water
∗ Can be used with air (up to 99°C) and water.
Note that the maximum operating pressure differential and
flow-rate characteristics should be within the specifications
of the fluid used.
Flow-rate Characteristics
For Air
N.C.
Symbol
For Water
2
1
Body
Port size
Orifice diameter
[mmø]
material (Nominal diameter)
1/4 (8A)
C37 (Brass),
Stainless
steel
Min. operating pressure Max. operating pressure differential [MPa] Flow-rate characteristics
differential Note 1) [MPa]
AC
DC
Av x 10−6 m2
Cv
Model
10
VXZ235
1/2 (15A)
15
3/4 (20A)
20
1 (25A)
25
VXZ245
VXZ255
VXZ265
3/8 (10A)
0.7
0
1.0
1.0
Max. system Weight Note 2)
[g]
pressure [MPa]
46
1.9
58
2.4
130
5.3
220
9.2
1100
245
10.2
1300
600
1.5
720
Fluid and Ambient Temperature
Options
Note 1) The operation of the valve may be unstable due to the capacity of the pressure supply source such as pumps and compressors or the pressure loss by
the orifice of piping. Please contact SMC to check if the required valve size can be used in the application. Please contact SMC for the compatibility of
the circuit flow and valve size. (Refer to page 21.)
Note 2) Weight of grommet type. Add 10 g for conduit, 30 g for DIN terminal, and 60 g for conduit terminal type respectively.
¡Refer to “Glossary of Terms” on page 28 for details on the max. operating pressure differential.
Valve Leakage Rate
Ambient temperature [°C]
Seal material
Leakage rate (Water) Note)
1 to 99
−20 to 60
EPDM
0.1 cm3/min or less
External Leakage
Seal material
Leakage rate (Water) Note)
EPDM
0.1 cm3/min or less
Note) Leakage is the value at ambient temperature 20°C.
Dimensions
Note) With no freezing
Construction
Internal Leakage
Fluid temperature [°C]
For High
Temperature Oil
Normally Closed (N.C.)
For Heated Water
For Oil
When the valve is closed, flow is blocked from
port 1 to port 2. However, if the pressure in port
2 is higher than port 1, the valve will not be able
to block the fluid and it will flow from port 2 to
port 1.
13
Series VXZ
For Heated Water
Flow-rate Characteristics
N.O.
Symbol
2
1
When the valve is closed, flow is blocked from
port 1 to port 2. However, if the pressure in port
2 is higher than port 1, the valve will not be able
to block the fluid and it will flow from port 2 to
port 1.
Normally Open (N.O.)
Body
Orifice diameter
Port size
[mmø]
material (Nominal diameter)
1/4 (8A)
C37 (Brass),
Stainless
steel
Min. operating pressure Max. operating pressure differential [MPa] Flow-rate characteristics
differential Note 1) [MPa]
AC
DC
Av x 10−6 m2
Cv
Model
10
VXZ2A5
1/2 (15A)
15
3/4 (20A)
20
1 (25A)
25
VXZ2B5
VXZ2C5
VXZ2D5
3/8 (10A)
0
0.7
0.6
Max. system Weight Note 2)
[g]
pressure [MPa]
46
1.9
58
2.4
130
5.3
220
9.2
1150
245
10.2
1350
630
1.5
750
Note 1) The operation of the valve may be unstable due to the capacity of the pressure supply source such as pumps and compressors or the pressure loss by
the orifice of piping. Please contact SMC to check if the required valve size can be used in the application. Please contact SMC for the compatibility of
the circuit flow and valve size. (Refer to page 21.)
Note 2) Weight of grommet type. Add 10 g for conduit, 30 g for DIN terminal, and 60 g for conduit terminal type respectively.
¡Refer to “Glossary of Terms” on page 28 for details on the max. operating pressure differential.
Fluid and Ambient Temperature
Valve Leakage Rate
Internal Leakage
Fluid temperature [°C]
Ambient temperature [°C]
Seal material
Leakage rate (Water) Note)
1 to 99
−20 to 60
EPDM
0.1 cm3/min or less
Note) With no freezing
External Leakage
Seal material
Leakage rate (Water) Note)
EPDM
0.1 cm3/min or less
Note) Leakage is the value at ambient temperature 20°C.
14
Zero Differential Pressure Type
Pilot Operated 2 Port Solenoid Valve
Series VXZ
For Heated Water
VXZ2 3 5 A A A
Common Specifications
Seal material
EPDM
Specifications
RoHS
How to Order (Single Unit)
Fluid
—
XB
N.O.
N.C.
15A
5
C
20A
6
D
25A
N.O.
N.C.
N.O.
N.C.
N.O.
A
B
C
D
F
G
Port size
C37 (Brass)
Stainless steel
C37 (Brass)
Stainless steel
H
J
Stainless steel
K
L
Stainless steel
C37 (Brass)
C37 (Brass)
Orifice diameter
Other options
1/4
3/8
10
1/4
Symbol Oil-free
—
3/8
1/2
15
3/4
20
1
25
A
B
D
E
Z
—
—
쑗
쑗
Port thread
Rc
G
NPT
G
NPT
Rc
For other special options,
refer to page 19.
Special electrical entry direction
Voltage/Electrical entry (coil insulation type: Class H)
Electrical Note 3)
entry
24 VDC
Grommet
100 VAC
Grommet
(With surge
110 VAC
voltage
200 VAC
suppressor)
230 VAC
24 VDC
DIN terminal Note 1) 2)
100 VAC
(With surge
110 VAC
voltage
200 VAC
suppressor)
230 VAC
100 VAC
Conduit terminal
110 VAC
(With surge
voltage
200 VAC
suppressor)
230 VAC
100 VAC
Conduit
(With surge
110 VAC
voltage
200 VAC
suppressor)
230 VAC
48 VAC
Grommet
(With surge
220 VAC
voltage
240 VAC
suppressor)
24 VAC
48 VAC DIN terminal Note 1) 2)
220 VAC
(With surge
voltage
240 VAC
suppressor)
24 VAC
48 VAC
Conduit terminal
220 VAC
(With surge
240 VAC
voltage suppressor)
24 VAC
Electrical Note 3)
entry
Symbol
Voltage
Z1P
Z1Q
Z1R
Z1Y
Z2A
Z2B
Z2C
Z2D
Z2E
Z2F
Z2G
Z2H
Z2V
Z2K
Z2L
Z2M
Z2N
Z2P
Z2Q
Z2R
Z2S
Z2W
48 VAC
Conduit
(With surge
220 VAC
voltage
240 VAC
suppressor)
24 VAC
24 VDC
100 VAC
110 VAC DIN terminal Note 1) 2)
(With surge
200 VAC
voltage
230 VAC
suppressor,
48 VAC
with light)
220 VAC
240 VAC
24 VAC
24 VDC
100 VAC
110 VAC Conduit terminal
(With surge
200 VAC
voltage
230 VAC
suppressor,
48 VAC
with light)
220 VAC
240 VAC
24 VAC
For High
Temperature Oil
A
B
C
D
E
G
H
J
K
L
N
P
Q
R
T
U
V
W
Z1A
Z1B
Z1C
Z1U
Z1F
Z1G
Z1H
Z1V
Z1K
Z1L
Z1M
Z1W
Voltage
Options
Symbol
Construction
4
B
N.C.
10A
Symbol Body material
Dimensions
3
A
Valve type
For Water
Symbol Body size
∗ The bracket is shipped together with the
product, but not assembled.
Body material/Port size/Orifice diameter
For Oil
Size/Valve type
No
Yes
For Air
With bracket
For Heated water
For Heated Water
5
Note 1) AC voltage coil for “H” of DIN terminal type does not have
full-wave rectifier.
Full-wave rectifier is built on the DIN connector side. Please
refer to page 27 to order it as an accessory.
Note 2) DIN connector insulation class is Class “B”.
Note 3) Faston terminal is not available.
Dimensions → Page 26 and after
15
Series VXZ
When the fluid is oil.
For High Temperature Oil
The kinematic viscosity must not exceed 50 mm2/s.
The special construction of the armature adopted in the
built-in full-wave rectifier type gives an improvement in
OFF response by providing clearance on the absorbed
surface when it is switched ON.
∗ Can be used with air (up to 99°C), water (up to 99°C) and oil.
Note that the maximum operating pressure differential and
flow-rate characteristics should be within the specifications
of the fluid used.
Flow-rate Characteristics
N.C.
Symbol
2
1
When the valve is closed, flow is blocked from
port 1 to port 2. However, if the pressure in port
2 is higher than port 1, the valve will not be able
to block the fluid and it will flow from port 2 to
port 1.
Normally Closed (N.C.)
Body
Port size
Orifice diameter
[mmø]
material (Nominal diameter)
1/4 (8A)
C37 (Brass),
Stainless
steel
Min. operating pressure Max. operating pressure differential [MPa] Flow-rate characteristics
differential Note 1) [MPa]
AC
DC
Av x 10−6 m2
Cv
Model
10
VXZ236
1/2 (15A)
15
3/4 (20A)
20
1 (25A)
25
VXZ246
VXZ256
VXZ266
3/8 (10A)
0
0.7
Max. system Weight Note 2)
[g]
pressure [MPa]
46
1.9
58
2.4
130
5.3
220
9.2
1100
245
10.2
1300
600
1.5
720
Note 1) The operation of the valve may be unstable due to the capacity of the pressure supply source such as pumps and compressors or the pressure loss by
the orifice of piping. Please contact SMC to check if the required valve size can be used in the application. Please contact SMC for the compatibility of
the circuit flow and valve size. (Refer to page 21.)
Note 2) Weight of grommet type. Add 10 g for conduit, 30 g for DIN terminal, and 60 g for conduit terminal type respectively.
¡Refer to “Glossary of Terms” on page 28 for details on the max. operating pressure differential.
Fluid and Ambient Temperature
Valve Leakage Rate
Internal Leakage
Fluid temperature [°C]
Ambient temperature [°C]
Seal material
Leakage rate (Oil) Note)
−5 Note) to 100
−20 to 60
FKM
0.1 cm3/min or less
Note) Kinematic viscosity: 50
mm2/s
or less
External Leakage
Seal material
Leakage rate (Oil) Note)
FKM
0.1 cm3/min or less
Note) Leakage is the value at ambient temperature 20°C.
16
Zero Differential Pressure Type
Pilot Operated 2 Port Solenoid Valve
Series VXZ
Specifications
For High Temperature Oil
Flow-rate Characteristics
For Air
N.O.
Symbol
For Water
2
1
Body
Port size
Orifice diameter
[mmø]
material (Nominal diameter)
1/4 (8A)
C37 (Brass),
Stainless
steel
Min. operating pressure Max. operating pressure differential [MPa] Flow-rate characteristics
differential Note 1) [MPa]
AC
DC
Av x 10−6 m2
Cv
Model
10
VXZ2A6
1/2 (15A)
15
3/4 (20A)
20
1 (25A)
25
VXZ2B6
VXZ2C6
VXZ2D6
3/8 (10A)
0
0.7
0.6
Max. system Weight Note 2)
[g]
pressure [MPa]
46
1.9
58
2.4
130
5.3
220
9.2
1150
245
10.2
1350
630
1.5
750
Fluid and Ambient Temperature
Options
Note 1) The operation of the valve may be unstable due to the capacity of the pressure supply source such as pumps and compressors or the pressure loss by
the orifice of piping. Please contact SMC to check if the required valve size can be used in the application. Please contact SMC for the compatibility of
the circuit flow and valve size. (Refer to page 21.)
Note 2) Weight of grommet type. Add 10 g for conduit, 30 g for DIN terminal, and 60 g for conduit terminal type respectively.
¡Refer to “Glossary of Terms” on page 28 for details on the max. operating pressure differential.
Valve Leakage Rate
Ambient temperature [°C]
Seal material
Leakage rate (Oil) Note)
−5 Note) to 100
−20 to 60
FKM
0.1 cm3/min or less
or less
External Leakage
Seal material
Leakage rate (Oil) Note)
FKM
0.1 cm3/min or less
Note) Leakage is the value at ambient temperature 20°C.
Dimensions
Note) Kinematic viscosity: 50
mm2/s
Construction
Internal Leakage
Fluid temperature [°C]
For High
Temperature Oil
Normally Open (N.O.)
For Heated Water
For Oil
When the valve is closed, flow is blocked from
port 1 to port 2. However, if the pressure in port
2 is higher than port 1, the valve will not be able
to block the fluid and it will flow from port 2 to
port 1.
17
Series VXZ
For High Temperature Oil
RoHS
How to Order (Single Unit)
VXZ2 3 6 A A A
Common Specifications
Seal material
FKM
Fluid
6
With bracket
For High temperature oil
—
XB
Size/Valve type
Symbol Body size
3
A
4
B
N.C.
10A
N.O.
N.C.
15A
5
C
20A
6
D
25A
∗ The bracket is shipped together with the
product, but not assembled.
Body material/Port size/Orifice diameter
Valve type
N.O.
N.C.
N.O.
N.C.
N.O.
Symbol Body material
A
B
C
D
F
G
Port size
C37 (Brass)
Stainless steel
C37 (Brass)
Stainless steel
H
J
Stainless steel
K
L
Stainless steel
C37 (Brass)
C37 (Brass)
No
Yes
Orifice diameter
1/4
Other options
3/8
10
1/4
Symbol Oil-free
—
3/8
1/2
15
3/4
20
1
25
A
B
D
E
Z
—
—
쑗
쑗
Port thread
Rc
G
NPT
G
NPT
Rc
For other special options,
refer to page 19.
Special electrical entry direction
Voltage/Electrical entry (coil insulation type: Class H)
Symbol
A
B
C
D
E
G
H
J
K
L
N
P
Q
R
T
U
V
W
Z1A
Z1B
Z1C
Z1U
Z1F
Z1G
Z1H
Z1V
Z1K
Z1L
Z1M
Z1W
Voltage
Electrical Note 3)
entry
24 VDC
Grommet
100 VAC
Grommet
(With surge
110 VAC
voltage
200 VAC
suppressor)
230 VAC
24 VDC
DIN terminal Note 1) 2)
100 VAC
(With surge
110 VAC
voltage
200 VAC
suppressor)
230 VAC
100 VAC
Conduit terminal
110 VAC
(With surge
voltage
200 VAC
suppressor)
230 VAC
100 VAC
Conduit
(With surge
110 VAC
voltage
200 VAC
suppressor)
230 VAC
48 VAC
Grommet
(With surge
220 VAC
voltage
240 VAC
suppressor)
24 VAC
48 VAC DIN terminal Note 1) 2)
220 VAC
(With surge
voltage
240 VAC
suppressor)
24 VAC
48 VAC
Conduit terminal
220 VAC
(With surge
240 VAC
voltage suppressor)
24 VAC
Electrical Note 3)
entry
Symbol
Voltage
Z1P
Z1Q
Z1R
Z1Y
Z2A
Z2B
Z2C
Z2D
Z2E
Z2F
Z2G
Z2H
Z2V
Z2K
Z2L
Z2M
Z2N
Z2P
Z2Q
Z2R
Z2S
Z2W
48 VAC
Conduit
(With surge
220 VAC
voltage
240 VAC
suppressor)
24 VAC
24 VDC
100 VAC
110 VAC DIN terminal Note 1) 2)
(With surge
200 VAC
voltage
230 VAC
suppressor,
48 VAC
with light)
220 VAC
240 VAC
24 VAC
24 VDC
100 VAC
110 VAC Conduit terminal
(With surge
200 VAC
voltage
230 VAC
suppressor,
48 VAC
with light)
220 VAC
240 VAC
24 VAC
Note 1) AC voltage coil for “H” of DIN terminal type does not have
full-wave rectifier.
Full-wave rectifier is built on the DIN connector side. Please
refer to page 27 to order it as an accessory.
Note 2) DIN connector insulation class is Class “B”.
Note 3) Faston terminal is not available.
Dimensions → Page 26 and after
18
EPDM specification
∗1 Resin body is not available.
∗2 Available for air and water.
∗3 “Other options”, which can be combined, are —, A, B,
D, E, Z.
Symbol
For Air
Bracket
Without bracket
With bracket
Rotation angle
90°
90°
A
OUT
IN
180°
B
180°
OUT
IN
270°
C
For Water
—
A
B
C
D
E
F
G
Specifications
Bracket
Electrical entry direction
IN side (Standard)
90°
None
180°
270°
IN side (Standard)
90°
With bracket ∗1
180°
270°
XC
XB∗
270°
OUT
IN
3 C
∗1 Bracket is attached as standard with the resin body type (VXZ2 A0 D 첸),
E
so it is no necessary to add XB to the part number.
∗2 Bracket is packed in the same container as the main body.
For Oil
Symbol
Symbol
For Heated Water
Coil mounting direction
Enter standard product number.
For High
Temperature Oil
EPDM specification
XC A
Options
Enter standard
product number.
VXZ2
Construction
X332
Special electrical entry direction
Dimensions
VXZ
Specifications
Series VXZ
Other Special Options
∗ Enter symbols in the order below when ordering a combination of
electrical option, other option, etc.
Example) VXZ2 3 2 A Z 1A Z XB A
Electrical option
Other option
Special electrical
entry direction
With bracket
19
Series VXZ
Construction
Normally Closed (N.C.)
Body material: Aluminium, C37 (Brass), Stainless steel
IN
q
q
w
w
e
e
r
r
t
t
y
y
u
u
OUT
Component Parts
No.
1
2
3
4
5
6
7
Body material: Resin
OUT
IN
Component Parts
Material
Description
Solenoid coil
Cu + Fe + Resin
Tube assembly
Stainless steel
Return spring
Stainless steel
Armature/Diaphragm assembly Stainless steel, NBR, FKM, EPDM
Stopper
NBR, FKM, EPDM
Aluminium, C37 (Brass), Stainless steel
Bonnet
Aluminium, C37 (Brass), Stainless steel
Body
No.
1
2
3
4
5
6
7
Description
Solenoid coil
Tube assembly
Return spring
Armature/Diaphragm assembly
Stopper
Bonnet
Body
Material
Cu + Fe + Resin
Stainless steel
Stainless steel
Stainless steel, NBR, FKM
NBR, FKM
Aluminium
Resin (PBT)
Normally Open (N.O.)
Body material: Aluminium, C37 (Brass), Stainless steel
q
w
t
e
y
u
i
r
IN
Body material: Resin
q
w
t
e
y
u
i
r
o
OUT
IN
!0
Component Parts
No.
1
2
3
4
5
6
7
8
9
10
20
Material
Description
Solenoid coil
Cu + Fe + Resin
Sleeve assembly
Stainless steel, Resin (PPS)
Push rod/Diaphragm assembly Stainless steel, NBR, FKM, EPDM
Spring
Stainless steel
O-ring A
NBR, FKM, EPDM
O-ring B
NBR, FKM, EPDM
Adapter
Resin (PPS)
O-ring C
NBR, FKM, EPDM
Aluminium, C37 (Brass), Stainless steel
Bonnet
Aluminium, C37 (Brass), Stainless steel
Body
o
OUT
!0
Component Parts
No.
1
2
3
4
5
6
7
8
9
10
Description
Solenoid coil
Sleeve assembly
Push rod/Diaphragm assembly
Spring
O-ring A
O-ring B
Adapter
O-ring C
Bonnet
Body
Material
Cu + Fe + Resin
Stainless steel, Resin (PPS)
Stainless steel, NBR, FKM
Stainless steel
NBR, FKM
NBR, FKM
Resin (PPS)
NBR, FKM
Aluminium
Resin (PBT)
Working Principle
Right after energized (Pilot valve open)
Energized (Main valve side)
When the coil is energized, the armature is
attracted causing the pilot orifice to opening.
The fluid filling the pressure action chamber
flows to the OUT side through the pilot orifice.
The pressure in the pressure action chamber
decreases by discharging fluid through the pilot
orifice. Because the force which pushes down
the valve is reduced by the discharge of the
fluid, the force that pushes up the main valve
overcomes the push down force and opens the
main valve. The main valve opens by the lift
spring reaction force even if pressure on the IN
side is 0 MPa or very low pressure.
Armature
Return
spring
Internal pressure
Pressure action chamber
Pilot
orifice
Internal pressure
Lift
spring
Internal pressure
Diaphragm
Supply
orifice
Supply
orifice
IN
Supply
orifice
IN
Internal pressure
Internal pressure
IN
Internal pressure
OUT
For Oil
Pressure action chamber
Pressure action
chamber
For Water
De-energized
The fluid enters from the IN goes through the
supply orifice to fill the pressure action chamber.
Main valve is closed by the pressure in the
pressure action chamber and the reaction force
of the return spring.
Internal pressure
For Air
Specifications
Series VXZ
Internal pressure
Internal pressure
OUT
For High
Temperature Oil
OUT
For Heated Water
Construction
Warning
Dimensions
Construction
Options
Unstable flow may occur with the product under the following
CONDITIONSsLOWFLOWFROMTHEPUMPORCOMPRESSORETCsUSE
OF SEVERAL ELBOWS OR TEES IN THE CIRCUIT OR s THIN NOZZLES
INSTALLED AT THE END OF THE PIPING ETC 4HIS CAN CAUSE VALVE
OPENINGCLOSING FAILURE OR OSCILLATION AND CAUSE A VALVE
MALFUNCTION )F PRODUCTS ARE USED WITH VACUUM THEN THE
VACUUMLEVELCANBEUNSTABLEDUETOTHESECONDITIONS0LEASE
contact SMC to check if the valve can be used in the
APPLICATIONBYPROVIDINGTHERELEVANTFLUIDCIRCUIT
21
Series VXZ
For Air
Dimensions/Body Material: Resin (One-touch Fitting Type)
Grommet
(with surge
voltage
suppressor)
Grommet
≈300
F
Q
≈300
D
F
D
OUT
IN
B1
2xP
Port size
DIN terminal
X1
U1
X1
U1
2 x ø5.3
Mounting hole
2xP
Port size
X
U
B
Y
W
X
U
B
Y
W
1.2
B1
E
E
1.2
OUT
IN
R
C
R
C
Q
2 x ø5.3
Mounting hole
Conduit terminal
Cable ø6 to ø12
Q
S
Q±2
S±2
D
F
D
32
34
E
B
Y
W
Y
W
X
X1
X1
U1
X
U
2 x ø5.3
Mounting hole
U
2xP
Port size
1.2
B1
2 x P
Port size
B
U1
OUT
E
B1
2 x ø5.3
Mounting hole
G1/2
IN
1.2
OUT
IN
R
R
C
T
25
(44)
F
31.5
G1/2
[mm]
Model
VXZ2
For information on handling
One-touch fittings and
appropriate tubing, refer to
KQ2 series One-touch
fittings in SMC website,
http://www.smc.eu
22
3
A
One-touch fitting
B
B1
C
D
E
F
ø10, ø3/8", ø12
69
37.5
90
(96.5)
35
15.5
22
One-touch fitting
Grommet
P
Bracket mounting
U
U1
W
X
X1
Y
54
27
44
65
32.5
56
Electrical entry
Model
VXZ2
3
A
P
ø10, ø3/8", ø12
Q
R
29.5
63.5
(70)
Grommet (with surge
voltage suppressor)
Q
R
50
32.5
(56.5)
( ) are the dimensions of Normally Open (N.O.).
DIN terminal
Q
R
67
55.5
(62)
S
55
Conduit terminal
Q
R
102
57.5
(64)
S
T
71
105
(111.5)
Zero Differential Pressure Type
Pilot Operated 2 Port Solenoid Valve
Series VXZ
Air
Specifications
Dimensions/Body Material: Resin (One-touch Fitting Type)
≈280
F
D
11
G1/2
Q
F
D
R
C
Terminal part
Faston connector
250 Series
11
For High
Temperature Oil
2 x ø5.3
Mounting
hole
2 x ø5.3
Mounting hole
9
15
X1
6.5
X
U
X1
U1
X
U
For Oil
Y
W
Y
W
U1
2xP
Port size
B
VXZ2
3
A
Model
VXZ2
3
A
P
B
B1
C
90
37.5
(96.5)
D
E
F
35
15.5
22
ø10, ø3/8", ø12
69
One-touch fitting
Electrical entry
Conduit
Faston
P
ø10, ø3/8", ø12
Q
R
50
57.5
(64)
Q
R
25.5
63.5
(70)
Bracket mounting
U
U1
W
X
X1
Y
54
27
44
65
32.5
56
Construction
Model
Options
[mm]
One-touch fitting
For Heated Water
B1
2xP
Port size
B
E
E
B1
1.2
R
C
OUT
IN
1.2
OUT
IN
For Water
23
Q
For Air
Faston type
Conduit
Dimensions
( ) are the dimensions of Normally Open (N.O.).
23
Series VXZ
For Air, Water, Oil
Dimensions/Body Material: Aluminium, C37 (Brass), Stainless Steel
Grommet (with surge voltage suppressor)
Grommet
≈300
Q
F
≈300
D
a
F
D
e
Bracket
2xM
Depth 5
H
R
C
OUT
B1
B1
2xP
Port size
i
B
b
2xM
Depth 5
H
A
G
B
DIN terminal
Q
Bracket mounting
hole dimensions
D
S
G1/2
a1 (VXZ24, 26) Note)
a
a1 (VXZ23, 25) Note)
R
C
6.5
31.5
(44)
Cable
ø6 to ø12
F
J
10.5
OUT
E
IN
2xM
Depth 5
H
A
G
B1
2xP
Port size
B
[mm]
Port size
A
B
B1
C
D
E
F
G
H
J
M
21 <22>
28
33.5
42
57
70
71
95
28.5
37.5
38.5
49.5
85 (91.5)
93 (99.5)
104 (110.5)
110 (116)
35
35
40
40
10.5
14
17
20
22
22
24.5
24.5
40
48
62
66
35
35
33
37
10
14.2
15.2
17.2
M5
M5
M6
M6
P
a
a1Note)
b
d
e
f
g
h
i
j
VXZ2 A3
VXZ2 B4
VXZ2 C5
VXZ2 D6
1/4, 3/8
1/2
3/4
1
56
56
70.5
70.5
52
60
68
73
75
75
92
92
13.5
2.3
2.3
2.3
2.3
30
34.5
39
41
6.5
6.5
6.5
6.5
10.5
10.5
10.5
10.5
31
35
43
45
37
41
46
48
Model
Port size
VXZ2 A3
VXZ2 B4
VXZ2 C5
VXZ2 D6
1/4, 3/8
1/2
3/4
1
Model
VXZ2
VXZ2
VXZ2
VXZ2
3
A
4
B
5
C
6
D
Model
P
1/4, 3/8
1/2
3/4
1
Bracket mounting
Port size
Grommet
P
Q
R
Electrical entry
Grommet (with surge
voltage suppressor)
Q
R
DIN terminal
Q
R
S
29.5
63.5 (70)
32.5
50 (56.5)
67
55.5 (62)
55
29.5 68.5 (74.5) 32.5
55 (61)
67
60.5 (66.5) 55
32
76.5 (83)
35
63 (69.5)
69.5
68.5 (75)
57.5
32
79.5 (85)
35
66 (71.5)
69.5
71.5 (77)
57.5
( ) are the dimensions of Normally Open (N.O.). < > are the dimensions of aluminum body.
Note) Old VXZ bracket mounting hole center position
24
E
IN
J
OUT
E
IN
J
f
j
d
g
R
C
h
Q
A
G
2xP
Port size
Zero Differential Pressure Type
Pilot Operated 2 Port Solenoid Valve
Series VXZ
Air
Water
Oil
Specifications
Dimensions/Body Material: Aluminium, C37 (Brass), Stainless Steel
Conduit
Conduit terminal
Q±2
D
F
≈280
Q
F
G1/2
D
34
e
h
J
R
IN
OUT
2xM
Depth 5
E
OUT
H
B1
A
G
2xP
Port size
B
A
G
2xP
Port size
i
For Oil
B
b
H
B1
Q
11
D
F
Terminal part
Faston connector
250 Series
Bracket mounting
hole dimensions
a1 (VXZ24, 26) Note)
a
a1 (VXZ23, 25) Note)
6.5
9
6.5
J
R
C
11
15
OUT
E
IN
H
A
G
B1
10.5
2xP
Port size
B
Options
2xM
Depth 5
For Heated Water
Faston type
VXZ2
VXZ2
VXZ2
VXZ2
3
A
4
B
5
C
6
D
A
B
B1
C
D
E
F
G
H
J
M
21 <22>
28
33.5
42
57
70
71
95
28.5
37.5
38.5
49.5
85 (91.5)
93 (99.5)
104 (110.5)
110 (116)
35
35
40
40
10.5
14
17
20
22
22
24.5
24.5
40
48
62
66
35
35
33
37
10
14.2
15.2
17.2
M5
M5
M6
M6
d
e
f
g
h
i
j
13.5
2.3
2.3
2.3
2.3
30
34.5
39
41
6.5
6.5
6.5
6.5
10.5
10.5
10.5
10.5
31
35
43
45
37
41
46
48
P
1/4, 3/8
1/2
3/4
1
Bracket mounting
Model
Port size
P
a
a1 Note)
b
VXZ2 A3
VXZ2 B4
VXZ2 C5
VXZ2 D6
1/4, 3/8
1/2
3/4
1
56
56
70.5
70.5
52
60
68
73
75
75
92
92
Model
Port size
VXZ2 A3
VXZ2 B4
VXZ2 C5
VXZ2 D6
P
Dimensions
Model
Construction
[mm]
Port size
Q
Conduit terminal
Electrical entry
Conduit
R
T
S
For High
Temperature Oil
2xM
Depth 5
For Water
J
IN
E
f
j
d
G1/2
C
g
T
25
R
C
a
For Air
32
23
S±2
Q
R
Faston
Q
R
1/4, 3/8
1/2
3/4
1
57.5 (64)
25.5
63.5 (70)
71
100 (106.5) 50
102
57.5 (64)
62.5 (68.5) 25.5 68.5 (74.5)
108 (114.5) 50
102
62.5 (68.5) 71
70.5 (77)
28
76.5 (82.5)
73.5 119 (126) 52.5
104.5 70.5 (77)
73.5 (79)
28
79.5 (85)
73.5 125 (131) 52.5
104.5 73.5 (79)
( ) are the dimensions of Normally Open (N.O.). < > are the dimensions of aluminum body.
Note) Old VXZ bracket mounting hole center position
25
Series VXZ
For Heated Water, High Temperature Oil
Dimensions/Body Material: C37 (Brass), Stainless Steel
Grommet
Conduit terminal
Q±2
≈300
Q
≈40
D
34
D
32
(42)
F
S±2
F
a
e
R
C
d
g
R
C
T
h
25
With full-wave
rectifier
OUT
OUT
E
IN
E
IN
J
J
f
j
G1/2
2xM
Depth 5
2xP
Port size
H
B1
2xM
Depth 5
A
G
B
b
A
G
H
B1
B
i
2xP
Port size
DIN terminal
Conduit
Cable
ø6 to ø12
Q
Q
≈45
G1/2
D
(44)
(42)
D
F
31.5
≈280
F
S
G1/2
IN
J
OUT
OUT
2xM
Depth 5
B1
2xM
Depth 5
H
A
G
H
E
E
IN
J
R
C
R
C
With full-wave
rectifier
B1
2xP
Port size
B
Bracket mounting
hole dimensions
VXZ2 A3
VXZ2 B4
VXZ2 C5
VXZ2 D6
1/4, 3/8
1/2
3/4
1
Model
VXZ2 A3
VXZ2 B4
VXZ2 C5
VXZ2 D6
Model
VXZ2 A3
VXZ2 B4
VXZ2 C5
VXZ2 D6
A
B
B1
C
D
E
F
G
H
J
M
21
28
33.5
42
57
70
71
95
28.5
37.5
38.5
49.5
85 (91.5)
93 (99.5)
104 (110.5)
110 (116)
35
35
40
40
10.5
14
17
20
22
22
24.5
24.5
40
48
62
66
35
35
33
37
10
14.2
15.2
17.2
M5
M5
M6
M6
P
a
a1Note)
b
1/4, 3/8
1/2
3/4
1
56
56
70.5
70.5
52
60
68
73
75
75
92
92
P
Bracket mounting
Port size
Port size
P
1/4, 3/8
1/2
3/4
1
d
e
f
g
h
i
j
13.5
2.3
2.3
2.3
2.3
30
34.5
39
41
6.5
6.5
6.5
6.5
10.5
10.5
10.5
10.5
31
35
43
45
37
41
46
48
Electrical entry
Conduit terminal
Grommet
Q
R
Q
R
29.5
63.5 (70) 110.5 57.5 (64)
29.5 68.5 (74.5) 110.5 62.5 (68.5)
32
76.5 (83) 113
70.5 (77)
32
79.5 (85) 113
73.5 (79)
( ) are the dimensions of Normally Open (N.O.).
Note) Old VXZ bracket mounting hole center position
26
a1 (VXZ24, 26) Note)
a
a1 (VXZ23, 25) Note)
6.5
Port size
2xP
Port size
B
[mm]
Model
A
G
10.5
DIN terminal
Conduit
S
T
Q
R
Q
R
S
79.5
79.5
82
82
100 (106.5)
108 (114.5)
119 (126)
125 (131)
50
50
52.5
52.5
57.5 (64)
62.5 (68.5)
70.5 (77)
73.5 (79)
67
67
69.5
69.5
55.5 (62)
60.5 (66.5)
68.5 (75)
71.5 (77)
55
55
57.5
57.5
Zero Differential Pressure Type
Pilot Operated 2 Port Solenoid Valve
Series VXZ
Air
Water
Oil
Heated High
water temperature
oil
Replacement Parts
¡DIN Connector Part No.
<Coil Insulation Type/For Class B>
Electrical option Rated voltage
Connector part no.
<Coil Insulation Type/For Class H>
Electrical option Rated voltage
24 VDC
24 VDC
12 VDC
100 VAC
100 VAC
110 VAC
110 VAC
None
200 VAC
220 VAC
220 VAC
230 VAC
240 VAC
24 VAC
24 VAC
48 VAC
48 VAC
24 VDC
12 VDC
110 VAC
With light
C18312G6GCU
240 VAC
100 VAC
200 VAC
220 VAC
230 VAC
240 VAC
24 VAC
48 VAC
GDM2A-G-S2
200 VAC
None
230 VAC
24 VDC
Connector part no.
GDM2A-L5
GDM2A-L6
GDM2A-L1
GDM2A-L1
GDM2A-L2
GDM2A-L2
GDM2A-L2
GDM2A-L2
GDM2A-L5
GDM2A-L15
100 VAC
110 VAC
200 VAC
With light
220 VAC
230 VAC
240 VAC
24 VAC
48 VAC
GDM2A-R
GDM2A-G-Z5
GDM2A-R-L1
GDM2A-R-L1
GDM2A-R-L2
GDM2A-R-L2
GDM2A-R-L2
GDM2A-R-L2
GDM2A-R-L5
GDM2A-R-L5
¡Gasket Part No. for DIN Connector
VCW20-1-29-1 (For Class B)
VCW20-1-29-1-F (For Class H)
¡Lead Wire Assembly for Faston Terminal
(Set of 2 pcs.)
VX021S-1-16FB
¡Bracket Assembly Part No. (for Metal Body)
VXZ 3 0S 14A 1
3
For VXZ2 43 AB 첸
5
For VXZ2 65 CD 첸
∗ 2 mounting screws are shipped together with the bracket assembly.
27
Series VXZ
Glossary of Terms
Electrical Terminology
Pressure Terminology
1. Maximum operating pressure differential
The maximum pressure differential (the difference between
the inlet and outlet pressure) which is allowed for operation.
When the outlet pressure is 0 MPa, this becomes the
maximum operating pressure.
2. Minimum operating pressure differential
The minimum pressure differential (the difference between the
inlet pressure and outlet pressure) required to keep the main
valve fully opened.
3. Maximum system pressure
The maximum pressure that can be applied inside the
pipelines (line pressure).
[The pressure differential of the solenoid valve portion must be
less than the maximum operating pressure differential.]
4. Withstand pressure
The pressure in which the valve must be withstood without a
drop in performance after holding for one minute under
prescribed pressure and returning to the operating pressure
range. [value under the prescribed conditions]
쎲Second Characteristics:
Degrees of protection against water
0 Non-protected
1 Protected against vertically falling water drops Dripproof type 1
against vertically falling water drops
Dripproof type 2
2 Protected
when enclosure tilted up to 15°
3
4
5
6
7
8
Protected against rainfall when enclosure tilted up to 60°
Protected against splashing water
Protected against water jets
Protected against powerful water jets
Protected against the effects of temporary immersion in water
Protected against the effects of continuous immersion in water
Rainproof type
Splashproof type
Water-jet-proof type
Powerful water-jet-proof type
Immersible type
Submersible type
Example) IP65: Dust-tight, Water-jet-proof type
“Water-jet-proof type” means that no water intrudes inside
an equipment that could hinder from operating normally by
means of applying water for 3 minutes in the prescribed
manner. Take appropriate protection measures, since a
device is not usable in an environment where a droplet of
water is splashed constantly.
Others
1. Material
Electrical Terminology
1. Surge voltage
A high voltage which is momentarily generated by shutting off
the power in the shut-off area.
2. Degree of protection
A degree defined in the “JIS C 0920: Waterproof test of electric
machinery/appliance and the degree of protection against the
intrusion of solid foreign objects.”
Verify the degree of protection for each product.
NBR: Nitrile rubber
FKM: Fluoro rubber
EPDM: Ethylene propylene rubber
2. Oil-free treatment
The degreasing and washing of wetted parts
3. Symbol
When the valve is closed, flow is blocked from port 1 to port 2.
However, if the pressure in port 2 is higher than port 1, the
valve will not be able to block the fluid and it will flow from port
2 to port 1.
IP
First
characteristic
numeral
Second
characteristic
numeral
쎲First Characteristics:
Degrees of protection against solid foreign objects
0 Non-protected
1 Protected against solid foreign objects of 50 mmø and greater
2 Protected against solid foreign objects of 12 mmø and greater
3 Protected against solid foreign objects of 2.5 mmø and greater
4 Protected against solid foreign objects of 1.0 mmø and greater
5 Dust-protected
6 Dust-tight
28
Faston Terminal
TM
1. Faston
is a trademark of Tyco Electronics Corp.
2. For electrical connection of the Faston terminal and
molded coil, please use Tyco’s “Amp/Faston
connector/250 Series” or the equivalent.
Series VXZ
Solenoid Valve Flow-rate Characteristics
(How to indicate flow-rate characteristics)
1. Indication of flow-rate characteristics
The flow-rate characteristics in equipment such as a solenoid valve etc. are indicated in their specifications as
shown in Table (1).
Table (1) Indication of Flow-rate Characteristics
Corresponding
equipment
Indication by
Other
international standard indications
C, b
Pneumatic
equipment
Process fluid
control
equipment
—
Conformed standard
—
ISO 6358: 1989
JIS B 8390: 2000
S
JIS B 8390: 2000
Equipment: JIS B 8373, 8374, 8375, 8379, 8381
Cv
ANSI/(NFPA)T3.21.3: 1990
Av
—
—
Cv
IEC60534-2-3: 1997
JIS B 2005: 1995
Equipment: JIS B 8471, 8472, 8473
2. Pneumatic equipment
2.1 Indication according to the international standards
(1) Conformed standard
ISO 6358: 1989 : Pneumatic fluid power—Components using compressible fluids—
Determination of flow-rate characteristics
JIS B 8390: 2000 : Pneumatic fluid power—Components using compressible fluids—
How to test flow-rate characteristics
(2) Definition of flow-rate characteristics
The flow-rate characteristics are indicated as a result of a comparison between sonic conductance C and
critical pressure ratio b.
Sonic conductance C : Value which divides the passing mass flow rate of an equipment in a choked flow
condition by the product of the upstream absolute pressure and the density in a
standard condition.
Critical pressure ratio b : Pressure ratio (downstream pressure/upstream pressure) which will turn to a choked
flow when the value is smaller than this ratio.
Choked flow
: The flow in which the upstream pressure is higher than the downstream pressure and
where sonic speed in a certain part of an equipment is reached.
Gaseous mass flow rate is in proportion to the upstream pressure and not dependent
on the downstream pressure.
Subsonic flow
: Flow greater than the critical pressure ratio
Standard condition
: Air in a temperature state of 20°C, absolute pressure 0.1 MPa (= 100 kPa = 1 bar),
relative humidity 65%.
It is stipulated by adding the “(ANR)” after the unit depicting air volume.
(standard reference atmosphere)
Conformed standard: ISO 8778: 1990 Pneumatic fluid power—Standard reference
atmosphere, JIS B 8393: 2000: Pneumatic fluid power—Standard reference atmosphere
(3) Formula for flow rate
It is described by the practical units as following.
P2 + 0.1
When ———— ≤ b, choked flow
P1 + 0.1
293
Q = 600 x C (P1 + 0.1) ————
·····························································(1)
273 + t
2 + 0.1
When P
————
> b, subsonic flow
P1 + 0.1
Q = 600 x C (P1 + 0.1)
P2 + 0.1
———— – b
P1 + 0.1
1 – ——————
1–b
2
293
———— ···························· (2)
273 + t
Q : Air flow rate [dm3/min (ANR)], dm3 (Cubic decimetre) of SI unit are also allowed to be described by L (litre).
1 dm3 = 1 L
29
Series VXZ
C : Sonic conductance [dm3/(s·bar)]
b : Critical pressure ratio [—]
P1 : Upstream pressure [MPa]
P2 : Downstream pressure [MPa]
t : Temperature [°C]
Note) Formula of subsonic flow is the elliptic analogous curve.
Flow-rate characteristics are shown in Graph (1) For details, please make use of SMC’s “Energy Saving
Program”.
Example)
Obtain the air flow rate for P1 = 0.4 [MPa], P2 = 0.3 [MPa], t = 20 [°C] when a solenoid valve is performed in
C = 2 [dm3/(s·bar)] and b = 0.3.
293
According to formula 1, the maximum flow rate = 600 x 2 x (0.4 + 0.1) x ————— = 600 [dm3/min (ANR)]
273 + 20
Flow rate ratio
0.3 + 0.1
Pressure ratio = ————— = 0.8
0.4 + 0.1
Based on Graph (1), the flow rate will be 0.7 when the pressure ratio is 0.8 and b = 0.3.
Hence, flow rate = Maximum flow rate x flow rate ratio = 600 x 0.7 = 420 [dm3/min (ANR)]
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
0.5
b = 0.1
0.6
0.2
0.3
0.4
P1
Equipment
C, b
P2
Q
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
Pressure ratio (P2 + 0.1) / (P1 + 0.1)
Graph (1) Flow-rate characteristics
(4) Test method
Attach a test equipment with the test circuit shown in Fig. (1) while maintaining the upstream pressure to a
certain level which does not go below 0.3 MPa. Next, measure the maximum flow to be saturated in the first
place, then measure this flow rate at 80%, 60%, 40%, 20% and the upstream and downstream pressure. And
then, obtain the sonic conductance C from this maximum flow rate. Besides that, substitute each data of
others for the subsonic flow formula to find b, then obtain the critical pressure ratio b from that average.
Pressure gauge or
pressure convertor
Air
supply
Filter
Shut off
valve
ød3 ≥ 3d1
≥ 10d3
3d3
10d1
Pipe for measuring
temperature
Pipe for
measuring
pressure in the
upstream side
ød2
Pressure control
equipment
Differential pressure gauge or
differential pressure converter
ød1
Thermometer
3d1
10d2
Flow control
valve
3d2
Equipment
for test
Pipe for
measuring
pressure in the
downstream side
Fig. (1) Test circuit based on ISO 6358, JIS B 8390
30
Flow meter
Solenoid Valve Flow-rate Characteristics
Series VXZ
2.2 Effective area S
(1) Conformed standard
JIS B 8390: 2000: Pneumatic fluid power—Components using compressible fluids—
Determination of flow rate characteristics
Equipment standards: JIS B 8373: 2 port solenoid valve for pneumatics
JIS B 8374: 3 port solenoid valve for pneumatics
JIS B 8375: 4 port, 5 port solenoid valve for pneumatics
JIS B 8379: Silencer for pneumatics
JIS B 8381: Fittings of flexible joint for pneumatics
(2) Definition of flow-rate characteristics
Effective area S : The cross-sectional area having an ideal throttle without friction deduced from the calculation of the pressure changes inside an air tank or without reduced flow when discharging
the compressed air in a choked flow, from an equipment attached to the air tank. This is the
same concept representing the “easy to run through” as sonic conductance C.
(3) Formula for flow rate
2 + 0.1
When P
————
≤ 0.5, choked flow
P1 + 0.1
293
Q = 120 x S (P1 + 0.1) ————
··································································(3)
273 + t
2 + 0.1
When P
————
> 0.5, subsonic flow
P1 + 0.1
293
————
··············································(4)
273 + t
Conversion with sonic conductance C :
S = 5.0 x C·······································································································(5)
Q : Air flow rate[dm3/min(ANR)], dm3 (cubic decimetre) of SI unit are also allowed to be described by L (litre)
1 dm3 = 1 L
S : Effective area [mm2]
P1 : Upstream pressure [MPa]
P2 : Downstream pressure [MPa]
t : Temperature [°C]
Note) Formula for subsonic flow (4) is only applicable when the critical pressure ratio b is the unknown
equipment. In the formula (2) by the sonic conductance C, it is the same formula as when b = 0.5.
Q = 240 x S
(P2 + 0.1) (P1 – P2)
Rectifier tube on the
downstream side
Rectifier tube on the
upstream side
(4) Test method
Attach a test equipment with the test circuit shown in Fig. (2) in order to discharge air into the atmosphere
until the pressure inside the air tank goes down to 0.25 MPa (0.2 MPa) from an air tank filled with the
compressed air at a certain pressure level (0.5 MPa) which does not go below 0.6 MPa. At this time, measure
the discharging time and the residual pressure inside the air tank which had been left until it turned to be the
normal values to determine the effective area S, using the following formula. The volume of an air tank should
be selected within the specified range by corresponding to the effective area of an equipment for test. In the
case of JIS B 8373, 8374, 8375, 8379, 8381, the pressure values are in parentheses and the coefficient of the
formula is 12.9.
Power
V
Ps + 0.1
293
supply
Pressure switch
S = 12.1 — log10 (—————) —— ·················(6)
Thermometer
t
P + 0.1
T
Solenoid
Control
Pressure control
valve
S : Effective area [mm2]
circuit
equipment
Equipment
V : Air tank capacity [dm3]
for test
t : Discharging time [s]
Air tank
Ps : Pressure inside air tank
Air
Filter
Shut off
Pressure gauge
supply
valve
before discharging [MPa]
or pressure
convertor
P : Residual pressure inside air tank
Timer (Clock)
after discharging [MPa]
Pressure recorder
T : Temperature inside air tank
before discharging [K]
Fig. (2) Test circuit based on JIS B 8390
31
Series VXZ
2.3 Flow coefficient Cv factor
The United States Standard ANSI/(NFPA)T3.21.3: 1990: Pneumatic fluid power—Flow rating test procedure and reporting method for fixed orifice components
Defines the Cv factor of flow coefficient by the following formula which is based on the test conducted by the
test circuit analogous to ISO 6358.
Q
Cv = ——————————— ·········································································(7)
ΔP (P2 + Pa)
114.5 ——————
T1
ΔP : Pressure drop between the static pressure tapping ports [bar]
P1 : Pressure of the upstream tapping port [bar gauge]
P2 : Pressure of the downstream tapping port [bar gauge]: P2 = P1 – ΔP
Q : Flow rate [dm3/s standard condition]
Pa : Atmospheric pressure [bar absolute]
T1 : Upstream absolute temperature [K]
Test conditions are < P1 + Pa = 6.5 ±0.2 bar absolute, T1 = 297 ±5 K, 0.07 bar ≤ ΔP ≤ 0.14 bar.
This is the same concept as effective area A which ISO 6358 stipulates as being applicable only when the
pressure drop is smaller than the upstream pressure and the compression of air does not become a problem.
3. Process fluid control equipment
(1) Conformed standard
IEC60534-2-3: 1997: Industrial process control valves. Part 2: Flow capacity, Section Three-Test procedures
JIS B 2005: 1995: Test method for the flow coefficient of a valve
Equipment standards: JIS B 8471: Solenoid valve for water
JIS B 8472: Solenoid valve for steam
JIS B 8473: Solenoid valve for fuel oil
(2) Definition of flow-rate characteristics
Av factor: Value of the clean water flow rate represented by m3/s which runs through a valve (equipment for
test) when the pressure difference is 1 Pa. It is calculated using the following formula.
ρ
Av = Q ———— ····························································································(8)
ΔP
Av : Flow coefficient [m2]
Q : Flow rate [m3/s]
ΔP : Pressure difference [Pa]
ρ : Fluid density [kg/m3]
(3) Formula of flow rate
It is described by the practical units. Also, the flow-rate characteristics are shown in Graph (2).
In the case of liquid:
ΔP
= 1.9 x 106Av ————
···············································································(9)
Q
G
Q : Flow rate [L/min]
Av : Flow coefficient [m2]
ΔP : Pressure difference [MPa]
G : Relative density [water = 1]
In the case of saturated aqueous vapor:
Q = 8.3 x 106Av ΔP(P2 + 0.1) ·······································································(10)
Q : Flow rate [kg/h]
Av : Flow coefficient [m2]
ΔP : Pressure difference [MPa]
P1 : Upstream pressure [MPa]: ΔP = P1 – P2
P2 : Downstream pressure [MPa]
32
Series VXZ
Solenoid Valve Flow-rate Characteristics
Conversion of flow coefficient:
Av = 28 x 10–6 Kv = 24 x 10–6 Cv ···········································································(11)
Here,
Kv factor
3
3
2
Upstream pressure
2
P1 = 1 MPa
P1 = 0.8 MPa
1
0.9
0.8 Example 2 P1 = 0.6 MPa
0.7
0.6 P1 = 0.5 MPa
0.5
0.4
1
0.9
0.8
0.7
0.6
0.5
P1 = 0.4 MPa
P1 = 0.3 MPa
0.4
Example 1
0.3
0.3
P1 = 0.2 MPa
0.2
0.2
P1 = 0.1 MPa
0.1
0.001
0.1
0.01
0.002 0.003 0.004
0.02 0.03 0.04
Water flow rate Q0 [L/min] (When Av = 1 x 10–6 [m2])
Saturated steam flow rate Q0 [kg/h] (when Av = 1 x 10–6 [m2])
: Value of the clean water flow rate represented by m3/h which runs through a valve
at 5 to 40°C, when the pressure difference is 1 bar.
Cv factor (Reference values): Figures representing the flow rate of clean water by US gal/min which runs
through a valve at 60°F, when the pressure difference is 1 lbf/in2 (psi).
Value is different from Kv and Cv factors for pneumatic purpose due to different test method.
0.1
Pressure differential ΔP [MPa]
Graph (2) Flow-rate characteristics
Example 1)
Obtain the pressure difference when water 15 [L/min] runs through a solenoid valve with an Av = 45 x 10–6 [m2].
Since Q0 = 15/45 = 0.33 [L/min], according to Graph (2), if reading ΔP when Q0 is 0.33, it will be 0.031 [MPa].
Example 2)
Obtain the saturated steam flow rate when P1 = 0.8 [MPa], ΔP = 0.008 [MPa] with a solenoid valve with an
Av =1.5 x 10–6 [m2 ].
According to Graph (2), if reading Q0 when P1 is 0.8 and ΔP is 0.008, it is 0.7 [kg/h]. Hence, the flow rate
Q = 0.7 x 1.5 = 1.05 [kg/h].
(4) Test method
Attach a test equipment with the test circuit shown in Fig. (3). Next, pour water at 5 to 40°C, then measure the
flow rate with a pressure difference of 0.075 MPa. However, the pressure difference needs to be set with a
large enough difference so that the Reynolds number does not go below a range of 4 x 104 .
By substituting the measurement results for formula (8) to figure out Av.
Test range
Thermometer
Pressure
tap
Restrictor
on the
upstream side
Flow
meter
2d
≥ 20d
Equipment
Pressure
for test
tap
6d
Restrictor
on the
downstream side
≥ 10d
Fig. (3) Test circuit based on IEC60534-2-3, JIS B 2005
33
Series VXZ
Flow-rate Characteristics
Note) Use this graph as a guide. In the case of obtaining an accurate flow rate, refer to pages 31 through to 35.
For Air
How to read the graph
Up
1.0
str
ea
pre
ss
0.9
Downstream pressure of valve (P2) [MPa]
m
(P1 + 1.033) = (1 to 1.89)(P2 + 1.033)
ure
of
va
lve
0.8
P1
0.9
1.0
MP
a
0.7
0.8
0.6
nic
so
b
Su
0.7
al
itic re
Cr essu
pr
0.6
0.5
The sonic range pressure to generate a flow of
6,000 L/min (ANR) is P1 ≈ 0.47 MPa for a ø15
4
orifice (VXZ2 B) and P1 ≈ 0.23 MPa for a ø20
5
orifice (VXZ2 C).
The optimum size for an upstream pressure P1
= 0.45 MPa and a flow of 6,000 L/min will be
4
the VXZ2B (ø15 orifice, port size 1/2).
0.5
nic
0.4
So
0.4
0.3
0.3
0.2
0.2
0.1
VXZ2A3 Port size 1/4
VXZ2A3 Port size 3/8
VXZ2B4
VXZ2C5
VXZ2D6
(P1 + 1.033) ≥
1.89 (P2 + 1.033)
0.1
1,000
1,000
2,000
2,000
2,000
4,000
5,000
5,000
3,000
6,000
10,000
10,000
15,000
ø10
3,000
ø10
4,000
8,000
ø15
10,000
15,000
ø20
20,000
ø25
20,000
Flow rate Q [L/min]
For Water
How to read the graph
500
The pressure differential for a ø10 orifice to
3
supply a flow of 25 L/min (VXZ2A, port size
3/8) will be ΔP ≈ 0.05 MPa.
The optimum size for a pressure differential of
ΔP ≈ 0.4 MPa and a flow of 50 L/min will be
3
the VXZ2A (ø10 orifice, port size 1/4).
400
300
v=
6
Z2 D
200
VX
5
2C
Flow rate Q [L/min]
Z
VX
100
5C
ø2
12
.2
v
0C
=9
ø2
.3
4
2B
XZ
v
5C
=5
ø1
V
.4
/8
e3
50
3
Po
3
Po
2A
XZ
40
V
iz
rt s
Z2 A
rt
e
siz
1/4
v
0C
ø1
v
0C
=2
.9
=1
ø1
VX
30
25
20
10
0.01
0.02
0.03
0.04 0.05
0.1
0.2
Pressure differential ΔP (P1 − P2) [MPa]
34
0.3
0.4 0.5
Series VXZ
Specific Product Precautions 1
Be sure to read before handling. Refer to back cover for Safety Instructions, “Handling
Precautions for SMC Products” (M-E03-3) and the Operation Manual for 2 Port Solenoid Valves
for Fluid Control Precautions. Please download it via our website, http://www.smcworld.com
Design
Warning
Selection
Warning
1. Cannot be used as an emergency shutoff valve etc.
The valves presented in this catalogue are not designed for
safety applications such as an emergency shutoff valve. If the
valves are used in this type of system, other reliable safety
assurance measures should also be adopted.
%XTENDEDPERIODSOFCONTINUOUSENERGIZATION
The solenoid coil will generate heat when continuously
energized. Avoid using in a tightly shut container. Install it in a
well ventilated area. Furthermore, do not touch it while it is
being energized or right after it is energized.
3. Liquid rings
In cases with a flowing liquid, provide a bypass valve in the
system to prevent the liquid from entering the liquid seal circuit.
4. Actuator drive
When an actuator, such as a cylinder, is to be driven using a
valve, take appropriate measures to prevent potential danger
caused by actuator operation.
5. Pressure (including vacuum) holding
It is not usable for an application such as holding the pressure
(including vacuum) inside of a pressure vessel because air
leakage is entailed in a valve.
6. When the conduit type is used as equivalent to an
IP65 enclosure, install a wiring conduit etc.
7. When an impact, such as water hammer etc.,
caused by the rapid pressure fluctuation is applied,
the solenoid valve may be damaged. Give an
attention to it.
Selection
Warning
1. Usage with low flow
Unstable flow may occur with the product under the
FOLLOWING CONDITIONS s LOW FLOW FROM THE PUMP OR
COMPRESSOR ETC s USE OF SEVERAL ELBOWS OR TEES IN THE
CIRCUIT ORsTHINNOZZLESINSTALLEDATTHEENDOFTHE PIPING
etc. This can cause valve opening/closing failure, or
oscillation, and cause a valve malfunction.
Please check the pressure differential and flow to select
THEAPPROPRIATESIZEOFTHEVALVEREFERRINGTOTHE&LOWRATE
Characteristics on page 34. Ensure that pressure
differential does not become lower than 0.01 MPa during
ON (N.C.: Valve open).
2. Fluid
1) Type of fluid
Select an appropriate valve with reference to the table below
for the general fluid. Before using a fluid, check whether it is
compatible with the materials of each model by referring to
the fluids listed in this catalogue. Use a fluid with a kinematic
viscosity of 50 mm2/s or less.
If there is something you do not know, please contact SMC.
Applicable Fluid
For Air
For Water
For Oil
For Heated water
For High temperature oil
Air
Air, Water
Air, Water, Oil
Air(up to 99°C), Water, Heated water
Air(up to 99°C), Water, Oil, High temperature oil
2) Flammable oil, Gas
"Confirm the specification for leakage in the interior and/or
exterior area."
3) Corrosive gas
Cannot be used since it will lead to cracks by stress
corrosion or result in other incidents.
4) When a brass body is used, then depending on water
quality, corrosion and internal leakage may occur. If such
abnormalities occur, exchange the product for a stainless
steel body.
5) Use an oil-free specification when any oily particle must not
enter the passage.
6) Applicable fluid on the list may not be used depending on
the operating condition. Give adequate confirmation, and
then determine a model, just because the compatibility list
shows the general case.
3. Air quality
<Air>
1) Use clean air.
Do not use compressed air that contains chemicals,
synthetic oils including organic solvents, salt or corrosive
gases, etc., as it can cause damage or malfunction.
2) Install an air filter.
Install air filters close to valves at their upstream side.
filtration degree of 5 μm or less should be selected.
3) Install an aftercooler or air dryer, etc.
Compressed air that contains excessive drainage may
cause malfunction of valves and other pneumatic equipment.
To prevent this, install an aftercooler or air dryer, etc.
4) If excessive carbon powder is generated, eliminate it
by installing mist separators at the upstream side of
valves.
If excessive carbon powder is generated by the compressor,
it may adhere to the inside of the valves and cause a
malfunction.
35
Series VXZ
Specific Product Precautions 2
Be sure to read before handling. Refer to back cover for Safety Instructions, “Handling
Precautions for SMC Products” (M-E03-3) and the Operation Manual for 2 Port Solenoid Valves
for Fluid Control Precautions. Please download it via our website, http://www.smcworld.com
Selection
Warning
4. Ambient environment
Tap water pressure:
The water pressure for tap water is normally 0.4 MPa or less.
However, in places like a high-rise building, the pressure may
be 1.0 MPa. When selecting tap water, be careful of the
maximum operating pressure differential.
When using water or heated water, poor operation or leaks
may be caused by dezincification, erosion, corrosion, etc.
The brass (C37) body of this product uses dezincification
resistant material as a standard. We also offer a stainless steel
body type with improved corrosion resistance. Please use the
one that fits your needs.
<Oil>
Generally, FKM is used as seal material, as it is resistant to oil.
The resistance of the seal material may deteriorate depending
on the type of oil, manufacturer or additives.
Check the resistance before using.
5. Countermeasures against static electricity
Take measures to prevent static electricity since some fluids
can cause static electricity.
Caution
1. Leakage voltage
Particularly when using a resistor in parallel with a switching
element and using a C-R element (surge voltage suppressor)
to protect the switching element, take note that leakage
current will flow through the resistor, C-R element, etc.,
creating a possible danger that the valve may not turn off.
Switching element
OFF
Leakage current
SOL.
AC/Class B built-in full-wave rectifier coil: 10% or less of rated voltage
DC coil: 2% or less of rated voltage
2. Selecting model
Material depends on fluid. Select optimal models for the fluid.
3. When the fluid is oil.
The kinematic viscosity must not exceed 50 mm2/s.
<Vacuum>
Please be aware that there is a range of pressure that can be
used.
Atmospheric pressure
Low
Medium
Air pressure vacuum
vacuum
Hydraulic pressure
Differential
pressure
High
vacuum
Ultra high
vacuum
Extreme
high
vacuum
<Suction filtration, Vacuum bottle set, Suction cup>
Drying
Discharge/Plasma
Neon tube/Fluorescent light
Vapor
deposition
Torr
(mmHg)
R
C
Leakage
voltage
The use of a fluid that contains foreign objects can cause
problems such as malfunction and seal failure by promoting
wear of the valve seat and armature, and by sticking to the
sliding parts of the armature etc. Install a suitable filter (strainer)
immediately upstream from the valve. As a general rule, use
100 mesh.
The supply water includes materials that create a hard
sediment or sludge such as calcium and magnesium. Since this
scale and sludge can cause the valve to malfunction, install
water softening equipment, and a filter (strainer) directly
upstream from the valve to remove these substances.
Use within the operable ambient temperature range. Check the
compatibility between the product’ s composition materials and
the ambient atmosphere. Be certain that the fluid used does
not touch the external surface of the product.
Power
supply
<Water>
<Accelerator, Electron microscope>
102 10
Surface
physics
Charged
particle beam
1 10-1 10-2 10-3 10-4 10-5 10-6 10-7 10-8 10-9 10-1010-1110-12
Pa 109 108 107 106 105 104 103 102 101 1 10-1 10-2 10-3 10-4 10-5 10-6 10-7 10-8 10-9 10-1010-1110-12
Vacuum piping direction: if the system uses a vacuum pump,
we ask that you install the vacuum pump on the secondary
side.
Also, install a filter on the primary side, and be careful that no
foreign object is picked up.
Please replace the valve after operating the device
approximately 300,000 times.
Mounting
Warning
1. If air leakage increases or equipment does not
operate properly, stop operation.
After mounting is completed, confirm that it has been done
correctly by performing a suitable function test.
2. Do not apply external force to the coil section.
When tightening is performed, apply a wrench or other tool to
the outside of the piping connection parts.
3. Mount a valve with its coil position upward, not
downward.
When mounting a valve with its coil positioned downward,
foreign objects in the fluid will adhere to the iron core leading
to a malfunction.
4. Do not warm the coil assembly with a heat insulator etc.
Use tape, heaters, etc., for freeze prevention on the piping and
body only. They can cause the coil to burn out.
5. Secure with brackets, except in the case of steel
piping and copper fittings.
36
Series VXZ
Specific Product Precautions 3
Be sure to read before handling. Refer to back cover for Safety Instructions, “Handling
Precautions for SMC Products” (M-E03-3) and the Operation Manual for 2 Port Solenoid Valves
for Fluid Control Precautions. Please download it via our website, http://www.smcworld.com
Piping
Mounting
Caution
Warning
6. Avoid sources of vibration, or adjust the arm from
the body to the minimum length so that resonance
will not occur.
6. If a regulator and valve are connected directly, they
may vibrate together and cause chattering. Do not
connect directly.
7. Painting and coating
7. If the cross-sectional area of piping for the fluid
supply side is restricted, operation will become
unstable due to inadequate pressure differential
during valve operation. Use piping size for the fluid
supply side that is suited to the port size.
Warnings or specifications printed or labelled on the product
should not be erased, removed or covered up.
Piping
Warning
Recommended Piping Conditions
1. During use, deterioration of the tube or damage to
the fittings could cause tubes to come loose from
their fittings and thrash about.
To prevent uncontrolled tube movement, install protective
covers or fasten tubes securely in place.
1. When connecting tubes using One-touch fittings,
provide some spare tube length shown in Fig. 1,
recommended piping configuration.
Also, do not apply external force to the fittings when binding
tubes with bands etc. (see Fig. 2.)
2. For piping the tube, fix the product securely using the
mounting holes so that the product is not in the air.
Caution
1. Preparation before piping
Straight portion
Before piping is connected, it should be thoroughly blown out
with air (flushing) or washed to remove chips, cutting oil and
other debris from inside the pipe. Avoid pulling, compressing,
or bending the valve body when piping.
2. Avoid connecting ground lines to piping, as this
may cause electric corrosion of the system.
3. Always tighten threads with the proper tightening torque.
When attaching fittings to valves, tighten with the proper
tightening torque shown below.
Lower tightening torque will lead into fluid leakage.
Tightening Torque for Piping
Connection threads Proper tightening torque N·m
Rc1/8
3 to 5
Rc1/4
8 to 12
Rc3/8
15 to 20
Rc1/2
20 to 25
Rc3/4
36 to 38
Rc1
Mounting
pitch A
Fig. 1 Recommended piping configuration
Unit: mm
Tubing
size
ø1/8"
ø6
ø1/4"
ø8
ø10
ø12
Mounting pitch A
Nylon tubing Soft nylon tubing Polyurethane tubing
25 or more
44 or more 29 or more
39 or more
84 or more 39 or more
57 or more
89 or more 56 or more
52 or more
112 or more 58 or more
69 or more
140 or more 70 or more
88 or more
168 or more 82 or more
Straight portion
length
16 or more
30 or more
32 or more
40 or more
50 or more
60 or more
Straight portion
4. Connection of piping to products
When connecting piping to a product, avoid mistakes
regarding the supply port etc.
Recommended
5. Wrapping of pipe tape
When connecting pipes, fittings,
etc., be sure that chips from the
pipe threads and sealing material
do not enter the valve.
Furthermore, when pipe tape is
used, leave 1.5 to 2 thread ridges
exposed at the end of the threads.
Winding
direction
Ex
Unacceptable
Fig. 2 Binding tubes with bands
Pipe tape
po
se
ap
pr
ox
.2
thr
ea
ds
37
Series VXZ
Specific Product Precautions 4
Be sure to read before handling. Refer to back cover for Safety Instructions, “Handling
Precautions for SMC Products” (M-E03-3) and the Operation Manual for 2 Port Solenoid Valves
for Fluid Control Precautions. Please download it via our website, http://www.smcworld.com
Maintenance
Wiring
Warning
1. Do not apply AC voltage to Class “H” coil AC type
unless it is built in full-wave rectifier, or the coil will
be damaged.
Caution
1. As a rule, use electrical wire with a cross sectional
area of 0.5 to 1.25 mm2 for wiring.
Furthermore, do not allow excessive force to be
applied to the lines.
2. Use electrical circuits which do not generate chattering in their contacts.
3. Use voltage which is within ±10% of the rated
voltage. In cases with a DC power supply where
importance is placed on responsiveness, stay
within ±5% of the rated value. The voltage drop is
the value in the lead wire section connecting the
coil.
4. When a surge from the solenoid affects the electrical circuitry, install a surge voltage suppressor etc.,
in parallel with the solenoid. Or, adopt an option
that comes with the surge voltage protection circuit. (However, a surge voltage occurs even if the
surge voltage protection circuit is used. For details,
please consult with SMC.)
Warning
1. Removing the product
The valve will reach a high temperature when used with high
temperature fluids. Confirm that the valve temperature has
dropped sufficiently before performing work. If touched
inadvertently, there is a danger of being burned.
1) Shut off the fluid supply and release the fluid pressure in the
system.
2) Shut off the power supply.
3) Dismount the product.
2. Low frequency operation
Switch valves at least once every 30 days to prevent
malfunction. Also, in order to use it under the optimum state,
conduct a regular inspection once a half year.
Caution
1. Filters and strainers
1) Be careful regarding clogging of filters and strainers.
2) Replace filter elements after one year of use, or earlier if the
pressure drop reaches 0.1 MPa.
3) Clean strainers when the pressure drop reaches 0.1 MPa.
2. Lubrication
When using after lubricating, never forget to lubricate
continuously.
3. Storage
In case of long term storage after use, thoroughly remove all
moisture to prevent rust and deterioration of rubber materials etc.
Operating Environment
Warning
1. Do not use in an atmosphere having corrosive gases, chemicals, sea water, water, water steam, or
where there is direct contact with any of these.
2. Do not use in explosive atmospheres.
3. Do not use in locations subject to vibration or impact.
4. Do not use in locations where radiated heat will be
received from nearby heat sources.
5. Employ suitable protective measures in locations
where there is contact with water droplets, oil or
welding spatter, etc.
4. Exhaust the drain from an air filter periodically.
Operating Precautions
Warning
1. If there is a possibility of reverse pressure being applied
to the valve, take countermeasures such as mounting a
check valve on the downstream side of the valve.
2. When problems are caused by a water hammer,
install water hammer relief equipment (accumulator
etc.), or use an SMC water hammer relief valve
(Series VXR). Please consult with SMC for details.
3. For pilot type 2-port solenoid valves, when the valve
is closed, sudden pressure resulting from the startup
of the fluid supply source (pump, compressor, etc.)
may cause the valve momentarily to open and
leakage to occur, so please exercise caution.
4. If the product is used in the conditions in which rapid
decrease in the inlet pressure of the valve and rapid
increase in the outlet pressure of the valve are repeated,
excessive stress will be applied to the diaphragm, which
causes the diaphragm to be damaged and dropped,
leading to the operation failure of the valve. Check the
operating conditions before use.
38
Series VXZ
Specific Product Precautions 5
Be sure to read before handling. Refer to back cover for Safety Instructions, “Handling
Precautions for SMC Products” (M-E03-3) and the Operation Manual for 2 Port Solenoid Valves
for Fluid Control Precautions. Please download it via our website, http://www.smcworld.com
Electrical Connections
Caution
왎 Conduit terminal
왎 Grommet
In the case of the conduit terminal, make connections
according to the marks shown below.
· Use the tightening torques below for each section.
· Properly seal the terminal connection (G1/2) with the special
wiring conduit etc.
Class B coil: AWG20 Insulator O.D. 2.5 mm
Class H coil: AWG18 Insulator O.D. 2.1 mm
q
Terminal cover
w
Rated voltage
DC
100 VAC
200 VAC
Other AC
− Mark
Lead wire colour
w
q
Red
Black
Blue
Blue
Red
Red
Grey
Grey
2
-
1
+
+ Mark
Round head combination screw
M3
Tightening torque 0.5 to 0.6 N·m
A
G1/2
Tightening torque
0.5 to 0.6 N·m
∗ There is no polarity.
Round head combination screw
M3 Tightening torque 0.5 to 0.6 N·m
왎 DIN terminal
Since internal connections are as shown below for the DIN
terminal, make connections to the power supply accordingly.
+
2
1
—
View A-A
(Internal connection diagram)
Conduit terminal
왎 Conduit
3
1: +
(−)
A
2: −
(+)
When used as an IP65 equivalent, use seal to install the wiring
conduit. Also, use the tightening torque below for the conduit.
Class B coil: AWG20 Insulator O.D. 2.5 mm
Class H coil: AWG18 Insulator O.D. 2.1 mm
Lead wire
Terminal no.
DIN terminal
1
+ (−)
2
− (+)
q
∗ There is no polarity.
· Use compatible heavy duty cords with cable O.D. of ø6 to 12 mm.
· Use the tightening torques below for each section.
Connector
Binding head screw with flange
Tightening torque 0.5 to 0.6 N·m
w
Seal
Wiring conduit
(Bore size G1/2 Tightening torque 0.5 to 0.6 N·m)
Rated voltage
Gasket
Washer
Compatible cable Note)
(Cable O.D. ø6 to ø12 mm)
Rubber seal
Binding head screw
Tightening torque 0.5 to 0.6 N·m
Note) For an outside cable diameter of ø9 to 12 mm, remove the internal
parts of the rubber seal before using.
[Change of electrical entry]
DC
100 VAC
200 VAC
Other AC
Lead wire colour
w
q
Red
Black
Blue
Blue
Red
Red
Grey
Grey
∗ There is no polarity.
(For the power saving type, there is polarity.)
Description
Seal
Part no.
VCW20-15-6
Note) Please order separately.
Wire entry can be changed by mounting the housing in either
direction (four directions at every 90° ) after dividing the terminal
block and the housing.
∗ For the indicator lighted style, be careful not to damage the light with
the lead wire of the cable.
39
Series VXZ
Specific Product Precautions 6
Be sure to read before handling. Refer to back cover for Safety Instructions, “Handling
Precautions for SMC Products” (M-E03-3) and the Operation Manual for 2 Port Solenoid Valves
for Fluid Control Precautions. Please download it via our website, http://www.smcworld.com
Electrical Circuits
Caution
[DC circuit]
Grommet, DIN terminal,
Conduit terminal, Conduit
Grommet, Faston terminal
Varistor
1 (+, −)
1 (+, −)
SOL.
2 (−, +)
SOL.
2 (−, +)
Without electrical option
With surge voltage suppressor
DIN terminal, Conduit terminal
Varistor
1 (+, −)
SOL.
2 (−, +)
Light
With light/surge voltage suppressor
[AC circuit]
DIN terminal, Conduit terminal
Grommet, DIN terminal,
Conduit terminal, Conduit
Varistor
Varistor
Rectifier
element
Rectifier
element
1
1
SOL.
2
SOL.
2
Light
Without electrical option
With light/surge voltage suppressor
One-touch Fitting
Caution
For information on handling One-touch fittings and
appropriate tubing, refer the KQ2 series One-touch
fittings in SMC website, http://www.smc.eu
40
Safety Instructions
Caution:
These safety instructions are intended to prevent hazardous situations and/or
equipment damage. These instructions indicate the level of potential hazard with
the labels of “Caution,” “Warning” or “Danger.” They are all important notes for
safety and must be followed in addition to International Standards (ISO/IEC)∗1),
and other safety regulations.
Caution indicates a hazard with a low level of risk
which, if not avoided, could result in minor or
moderate injury.
Warning:
Warning indicates a hazard with a medium level of
risk which, if not avoided, could result in death or
serious injury.
Danger :
Danger indicates a hazard with a high level of risk
which, if not avoided, will result in death or serious
injury.
∗1) ISO 4414: Pneumatic fluid power – General rules relating to systems.
ISO 4413: Hydraulic fluid power – General rules relating to systems.
IEC 60204-1: Safety of machinery – Electrical equipment of machines.
(Part 1: General requirements)
ISO 10218-1: Manipulating industrial robots - Safety.
etc.
Caution
Warning
1. The compatibility of the product is the responsibility of the
person who designs the equipment or decides its specifications.
Since the product specified here is used under various operating conditions, its
compatibility with specific equipment must be decided by the person who designs
the equipment or decides its specifications based on necessary analysis and test
results. The expected performance and safety assurance of the equipment will be
the responsibility of the person who has determined its compatibility with the
product. This person should also continuously review all specifications of the
product referring to its latest catalogue information, with a view to giving due
consideration to any possibility of equipment failure when configuring the
equipment.
2. Only personnel with appropriate training should operate
machinery and equipment.
The product specified here may become unsafe if handled incorrectly. The
assembly, operation and maintenance of machines or equipment including our
products must be performed by an operator who is appropriately trained and
experienced.
3. Do
.
not service or attempt to remove
machinery/equipment until safety is confirmed.
product
and
1. The inspection and maintenance of machinery/equipment should only be
performed after measures to prevent falling or runaway of the driven objects
have been confirmed.
2. When the product is to be removed, confirm that the safety measures as
mentioned above are implemented and the power from any appropriate source
is cut, and read and understand the specific product precautions of all relevant
products carefully.
3. Before machinery/equipment is restarted, take measures to prevent
unexpected operation and malfunction.
4. Contact SMC beforehand and take special consideration of safety
measures if the product is to be used in any of the following
conditions.
1. Conditions and environments outside of the given specifications, or use
outdoors or in a place exposed to direct sunlight.
2. Installation on equipment in conjunction with atomic energy, railways, air
navigation, space, shipping, vehicles, military, medical treatment, combustion
and recreation, or equipment in contact with food and beverages, emergency
stop circuits, clutch and brake circuits in press applications, safety equipment
or other applications unsuitable for the standard specifications described in the
product catalogue.
3. An application which could have negative effects on people, property, or
animals requiring special safety analysis.
4. Use in an interlock circuit, which requires the provision of double interlock for
possible failure by using a mechanical protective function, and periodical
checks to confirm proper operation.
1. The product is provided for use in manufacturing industries.
The product herein described is basically provided for peaceful use in
manufacturing industries.
If considering using the product in other industries, consult SMC beforehand and
exchange specifications or a contract if necessary.
If anything is unclear, contact your nearest sales branch.
Limited warranty and Disclaimer/
Compliance Requirements
The product used is subject to the following “Limited warranty and Disclaimer”
and “Compliance Requirements”.
Read and accept them before using the product.
Limited warranty and Disclaimer
1. The warranty period of the product is 1 year in service or 1.5 years after
the product is delivered.∗2)
Also, the product may have specified durability, running distance or
replacement parts. Please consult your nearest sales branch.
2. For any failure or damage reported within the warranty period which is clearly our
responsibility, a replacement product or necessary parts will be provided.
This limited warranty applies only to our product independently, and not to any
other damage incurred due to the failure of the product.
3. Prior to using SMC products, please read and understand the warranty terms
and disclaimers noted in the specified catalogue for the particular products.
∗2) Vacuum pads are excluded from this 1 year warranty.
A vacuum pad is a consumable part, so it is warranted for a year after it is delivered.
Also, even within the warranty period, the wear of a product due to the use of the vacuum pad
or failure due to the deterioration of rubber material are not covered by the limited warranty.
Compliance Requirements
1. The use of SMC products with production equipment for the manufacture of
weapons of mass destruction (WMD) or any other weapon is strictly prohibited.
2. The exports of SMC products or technology from one country to another are
governed by the relevant security laws and regulations of the countries involved
in the transaction. Prior to the shipment of a SMC product to another country,
assure that all local rules governing that export are known and followed.
Safety Instructions Be sure to read “Handling Precautions for SMC Products” (M-E03-3) before using.
SMC Corporation (Europe)
Austria
Belgium
Bulgaria
Croatia
Czech Republic
Denmark
Estonia
Finland
France
Germany
Greece
Hungary
Ireland
Italy
Latvia
+43 (0)2262622800
+32 (0)33551464
+359 (0)2807670
+385 (0)13707288
+420 541424611
+45 70252900
+372 6510370
+358 207513513
+33 (0)164761000
+49 (0)61034020
+30 210 2717265
+36 23511390
+353 (0)14039000
+39 0292711
+371 67817700
SMC CORPORATION
www.smc.at
www.smcpneumatics.be
www.smc.bg
www.smc.hr
www.smc.cz
www.smcdk.com
www.smcpneumatics.ee
www.smc.fi
www.smc-france.fr
www.smc-pneumatik.de
www.smchellas.gr
www.smc.hu
www.smcpneumatics.ie
www.smcitalia.it
www.smclv.lv
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
Lithuania
Netherlands
Norway
Poland
Portugal
Romania
Russia
Slovakia
Slovenia
Spain
Sweden
Switzerland
Turkey
UK
+370 5 2308118
+31 (0)205318888
+47 67129020
+48 (0)222119616
+351 226166570
+40 213205111
+7 8127185445
+421 (0)413213212
+386 (0)73885412
+34 902184100
+46 (0)86031200
+41 (0)523963131
+90 212 489 0 440
+44 (0)845 121 5122
www.smclt.lt
www.smcpneumatics.nl
www.smc-norge.no
www.smc.pl
www.smc.eu
www.smcromania.ro
www.smc-pneumatik.ru
www.smc.sk
www.smc.si
www.smc.eu
www.smc.nu
www.smc.ch
www.smcpnomatik.com.tr
www.smcpneumatics.co.uk
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
Akihabara UDX 15F, 4-14-1, Sotokanda, Chiyoda-ku, Tokyo 101-0021, JAPAN Phone: 03-5207-8249 FAX: 03-5298-5362
1st printing RX printing RX 00 Printed in Spain
Specifications are subject to change without prior notice and any obligation on the part of the manufacturer.
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