7 20 Pilot Operated 2 Port Solenoid Valve 96.5

7 20 Pilot Operated 2 Port Solenoid Valve 96.5
Pilot Operated 2 Port Solenoid Valve
New
RoHS
Water
Air
Oil
Heated water High temperature oil
(99°C)
(99°C)
Compact
Lightweight
Height
Weight
7%Smaller
20 %Lighter
∗
Approx.
(7 mm)
(VXD24)
Enclosure IP65
∗
∗ Electrical entry “Faston” type
terminal is IP40.
Power consumption
∗
(DC/N.C. valve)
4.5 W (VXD23 to 25)
7 W (VXD26)
(90 g)
(VXD23 Resin body)
∗ Comparison with SMC conventional model
−
7
Conventional
New
model
VXD
Air
Body material
Resin (VXD2 ) Aluminium (VXD2 )
mm
3
A
3
A
(New VXD)
Applicable tubing O.D.
ø10, ø12/mm
ø3/8"/inch
Resin body
96.5 mm
103.5 mm (Conventional model)
Bracket standard
equipment
Air
Water
Aluminium body
Oil
Heated water High temperature oil
(99°C)
(99°C)
Body material
C37 (Brass), Stainless steel
(VXD2A3 to 2D6 )
Solenoid coil type
Insulation type Class B/H
Class B
Valve type
N.C.
N.O.
Class H
Stainless steel body
C37 (Brass) body
Series VXD
CAT.EUS70-50A-UK
Series VXD
Pilot Operated 2 Port Solenoid Valve
Clearance
Air
Water
Oil
Heated water High temperature oil
(99°C)
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.
(99°C)
Enclosure
IP65
Power consumption:
Flame resistance
UL94V-0 conformed
4.5 W (VXD23 to 25)
7 W (VXD26)
Low-noise
construction
Improved armature
durability
Impact noise reduced
by the rubber buffer
Body material
Piping variations
Air
Aluminium (VXD2A3 )
Resin (VXD2A3 )
C37 (Brass)
Stainless steel (VXD2B4 to 2D6 )
Thread piping, One-touch fitting
Water/Oil/Heated water/
High temperature oil
C37 (Brass)
Built-in full-wave rectifier type
Stainless steel (VXD2A3 to 2D6 )
(AC specification: Insulation type Class B/H)
Improved durability
Service life is extended by special construction.
(compared with current shading coil)
Reduced buzz noise
Rectified to DC by a full-wave rectifier, resulting in a buzz noise reduction.
Reduced apparent power (Class B, N.C. valve)
10 VA →
20 VA →
7 VA (VXD23 to 25)
9.5 VA (VXD26)
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.
Port size
Model
Size
Orifice
diameter
Body
material
Thread
1/4
3/8
1/2
1
ø10
ø3/8"
ø12
—
—
—
—
—
—
—
—
—
—
C37 (Brass)
—
—
—
—
—
Stainless steel
—
—
—
—
—
Aluminium
3
VXD2A
8A
10A
15A
10 mmø
10A
15A
15 mmø
VXD2C
20A
20 mmø
6
25A
4
VXD2B
5
VXD2D
Features 1
25 mmø
One-touch fitting
3/4
Resin
C37 (Brass)
—
—
—
—
—
—
Stainless steel
—
—
—
—
—
—
C37 (Brass)
—
—
—
—
—
—
—
Stainless steel
—
—
—
—
—
—
—
C37 (Brass)
—
—
—
—
—
—
—
Stainless steel
—
—
—
—
—
—
—
Common Specifications .................................................................... 2
Selection Steps ..................................................................................... 3
Specifications
Series VXD
For Oil
Model/Valve Specifications, Fluid and Ambient Temperature, Valve Leakage ... 10, 11
How to Order ............................................................................... 12
For Heated water
Model/Valve Specifications, Fluid and Ambient Temperature, Valve Leakage ... 13, 14
How to Order ............................................................................... 15
For High temperature oil
Model/Valve Specifications, Fluid and Ambient Temperature, Valve Leakage ... 16, 17
How to Order ................................................................................ 18
Construction ........................................................................................ 19
Dimensions
For Air/Water/Oil
Body material: Resin .............................................................. 21
Body material: Aluminium, C37 (Brass), Stainless steel ........ 23
Body material: C37 (Brass), Stainless steel ............... 25
For Heated water/High temperature oil
Body material: C37 (Brass), Stainless steel ............... 29
Replacement Parts ........................................................................... 32
Glossary of Terms ............................................................................. 33
Solenoid Valve Flow-rate Characteristics .............................. 34
Flow-rate Characteristics ............................................................... 39
Specific Product Precautions ........................................................ 41
Safety Instructions ............................................................... Back cover
1
For Water
How to Order ................................................................................. 9
For Oil
Model/Valve Specifications, Fluid and Ambient Temperature, Valve Leakage ....... 7, 8
For Heated water
For Water
For High
temperature oil
How to Order ................................................................................. 6
Construction Options
Model/Valve Specifications, Fluid and Ambient Temperature, Valve Leakage ....... 4, 5
For Air
For Air
Dimensions
INDEX
Pilot Operated 2 Port Solenoid Valve
Series VXD
Common Specifications
Standard Specifications
Valve construction
Pilot operated 2 port diaphragm type
Withstand pressure
Valve
Body material
specifications
Seal material
2.0 MPa (Resin body type 1.5 MPa)
Aluminium, Resin, C37 (Brass), Stainless steel
NBR, FKM, EPDM
Dust-tight, Water-jet-proof type (IP65) Note)
Enclosure
Environment
Location without corrosive or explosive gases
AC
Rated voltage
Coil
specifications
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
AC
Allowable leakage
voltage
DC
10% or less of rated voltage
2% or less of rated voltage
Coil insulation type
Class B, Class H
Note) Electrical entry “Faston” type terminal is IP40.
Be sure to read “Specific Product Precautions” before handling.
Solenoid Coil Specifications
Normally Closed (N.C.)
Normally Open (N.O.)
DC Specification
DC Specification
Model
VXD23 to 25
VXD26
Power consumption [W] Note 1) Temperature rise [°C] Note 2)
4.5
50
7
55
Model
VXD2A to 2C
VXD2D
Power consumption [W] Note 1) Temperature rise [°C]
7.5
60
8.5
Note 2)
70
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.
AC Specification (Built-in Full-wave Rectifier Type)
AC Specification (Built-in Full-wave Rectifier Type)
Class B
Class B
Model
Apparent power [VA] Note 1) 2) Temperature rise [°C]
Note 3)
Model
Apparent power [VA]
Temperature rise [°C]
VXD23 to 25
7
60
VXD2A to 2C
9
60
VXD26
9.5
70
VXD2D
10
70
Class H
Model
Class H
Apparent power [VA] Note 1) 2) Temperature rise [°C] Note 3)
Model
Apparent power [VA] Note 1) 2) Temperature rise [°C] Note 3)
VXD23 to 25
9
100
VXD2A to 2C
9
100
VXD26
12
100
VXD2D
12
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.
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 VXD
Specifications
Selection Steps
Selection Steps
Page
Symbol
Air
Page 4
0
Water
Page 7
2
Oil
Page 10
3
Heated
water
High
temperature oil
Page 13
5
Page 16
6
q
VXD2 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
Size
8A
Valve type
N.C.
3
w
1/4
Orifice diameter
10
e
VXD2 3 0 A A
Body material Aluminium
Port size
For Heated water
Select from “Flow
rate — Pressure.”
Body material
Port size
Orifice diameter
Selection item
A
e
w
r
VXD2 3 0 A A
For High
temperature oil
Item
Step 3 Select electrical specification.
Select electrical
specification.
Selection item
Voltage
Symbol
24 VDC
A
Electrical entry Grommet
Construction Options
Item
r
Dimensions
Step 4 For other options, refer to each "How to Order".
3
Series VXD
For Air
Model/Valve Specifications
N.C.
Symbol
2
1
Refer to “Glossary of Terms”
on page 33 for symbol.
Normally Closed (N.C.)
Body
material
AIuminium
Resin
Stainless
steel, C37
(Brass)
Port size
1/4 (8A)
3/8 (10A)
1/2 (15A)
ø10
ø3/8"
ø12
3/8 (10A)
1/2 (15A)
3/4 (20A)
1 (25A)
Orifice diameter
[mmø]
Model
10
VXD230
Maximum operating pressure differential
Minimum operating
pressure differential Note 1) [MPa]
AC
DC
0.9
0.7
1.0
1.0
0.02
15
VXD240
20
25
VXD250
VXD260
C
8.5
9.2
9.2
5.6
4.8
7.2
18.0
20.0
38.0
Flow-rate characteristics
Maximum system
Effective area [mm2] pressure [MPa]
b
Cv
2.0
2.4
0.35
2.4
1.3
0.33
—
0.9
0.33
1.5
1.5
0.33
5.0
0.35
5.5
9.5
0.30
—
225
Note 2)
Weight
[g]
370
370
370
330
330
330
720
720
840
1360
Note 1) Be aware that even if the pressure difference is above the minimum operating pressure differential when the valve is closed, the pressure difference
may fall below the minimum operating pressure differential when the valve opens, depending on the power of the supply source (pumps,
compressors, etc.) or the type of pipe restrictions.
Note 2) Weight of grommet type. Add 10 g for conduit type, 30 g for DIN terminal type, 60 g for conduit terminal type respectively.
Note 3) If you need a valve for air of C37 (Brass) or SUS (Stainless steel) in the port size of 1/4, use the valve for water.
Refer to “Glossary of Terms” on page 33 for details on minimum operating pressure differential, the maximum operating pressure differential, maximum
system pressure.
Fluid and Ambient Temperature
Valve Leakage
Internal Leakage
Fluid temperature [°C]
−10 Note) to 60
Ambient temperature [°C]
−20 to 60
Seal material
Note) Dew point temperature: –10°C or less
NBR, FKM
Leakage rate (Air) Note)
VXD23 to 26
(8A to 25A)
15 cm3/min or less (AIuminium body type)
15 cm3/min or less (Resin body type)
2 cm3/min or less (Metal body type)
External Leakage
Seal material
NBR, FKM
Leakage rate (Air) Note)
VXD23 to 26
(8A to 25A)
15 cm3/min or less (AIuminium body type)
15 cm3/min or less (Resin body type)
1 cm3/min or less (Metal body type)
Note) Leakage is the value at ambient temperature 20°C.
4
Pilot Operated 2 Port Solenoid Valve
Series VXD
Specifications
For Air
Model/Valve Specifications
For Air
N.O.
Symbol
1
Refer to “Glossary of Terms”
on page 33 for symbol.
Normally Open (N.O.)
Stainless
steel, C37
(Brass)
Model
10
VXD2A0
Maximum operating pressure differential
Minimum operating
pressure differential Note 1) [MPa]
AC
DC
0.6
0.4
0.7
0.7
0.02
15
VXD2B0
20
25
VXD2C0
VXD2D0
C
8.5
9.2
9.2
5.6
4.8
7.2
18.0
20.0
38.0
Flow-rate characteristics
Maximum system
Effective area [mm2] pressure [MPa]
b
Cv
2.0
2.4
0.35
2.4
1.3
—
0.9
0.33
1.5
1.5
5.0
0.35
5.5
9.5
0.30
—
225
Note 2)
Weight
[g]
390
390
390
350
350
350
740
740
860
1390
For Heated water
Resin
1/4 (8A)
3/8 (10A)
1/2 (15A)
ø10
ø3/8"
ø12
3/8 (10A)
1/2 (15A)
3/4 (20A)
1 (25A)
Orifice diameter
[mmø]
Note 1) Be aware that even if the pressure difference is above the minimum operating pressure differential when the valve is closed, the pressure difference
may fall below the minimum operating pressure differential when the valve opens, depending on the power of the supply source (pumps,
compressors, etc.) or the type of pipe restrictions.
Note 2) Weight of grommet type. Add 10 g for conduit type, 30 g for DIN terminal type, 60 g for conduit terminal type respectively.
Note 3) If you need a valve for air of C37 (Brass) or SUS (Stainless steel) in the port size of 1/4, use the valve for water.
Refer to “Glossary of Terms” on page 33 for details on minimum operating pressure differential, the maximum operating pressure differential, maximum
system pressure.
Fluid and Ambient Temperature
Valve Leakage
Internal Leakage
Ambient temperature [°C]
−20 to 60
Seal material
Note) Dew point temperature: –10°C or less
NBR, FKM
Leakage rate (Air) Note)
VXD2A to 2D
(8A to 25A)
15 cm3/min or less (AIuminium body type)
15 cm3/min or less (Resin body type)
2 cm3/min or less (Metal body type)
External Leakage
Seal material
NBR, FKM
Dimensions
Fluid temperature [°C]
−10 Note) to 60
For High
temperature oil
AIuminium
Port size
Construction Options
Body
material
For Oil
For Water
2
Leakage rate (Air) Note)
VXD2A to 2D
(8A to 25A)
15 cm3/min or less (AIuminium body type)
15 cm3/min or less (Resin body type)
1 cm3/min or less (Metal body type)
Note) Leakage is the value at ambient temperature 20°C.
5
Series VXD
For Air
RoHS
How to Order
VXD2 3 0 A A A
Fluid
0
Size
3
Valve
type
N.C.
8A
10A
A Note)
4
B
15A
10A
15A
5
C
20A
6
D
25A
N.O.
N.C.
N.O.
N.C.
N.O.
N.C.
N.O.
—
XB
No
Yes
Note) Bracket is standardised with the resin body type
D
(VXD230 E ). No need to add "XB".
Body material/Port size/Orifice diameter
Size—Valve type
Symbol
With bracket
Air
Symbol
A
B
C
D
E
F
G
H
J
K
Body
material
Orifice
diameter
Port size
F
∗ The bracket for aluminium, C37 (Brass) and
stainless steel body type of the VXD23 is
shipped together with the product, but not
assembled. (Refer to the figure below for
mounting.)
1/4
Aluminium
3/8
1/2
ø10 One-touch fitting
Resin
10
ø3/8" One-touch fitting
VXD2A3 Bracket mounting dimensions
ø12 One-touch fitting
C37
(Brass)
3/8
Stainless
steel
3/8
1/2
Port size: For 1/4, 3/8
15
1/2
L
M
C37 (Brass)
N
P
C37 (Brass)
Stainless steel
Stainless steel
3/4
20
1
25
Bracket
Tightening torque of 2 to 3 N·m
Note 1) VXD2A0 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 SUS (Stainless steel) in the port size of 1/4, use the valve for water.
Port size: For 1/2
Voltage/Electrical entry (coil insulation type: Class B)
6
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)
Bracket
Conduit
(With surge
voltage
suppressor)
Tightening torque of 2 to 3 N·m
Faston terminal
Other options
DIN terminal
(With surge
voltage
suppressor,
with light)
Conduit terminal
(With surge
voltage
suppressor,
with light)
Symbol
—
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
NPT
G
FKM
—
NPT
Rc, With one-touch fitting Note 2)
FKM
G
NPT
NBR
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.
DIN terminal
(With surge
voltage
suppressor,
without DIN
connector)
Dimensions → Page on and after 21 (Single Unit)
Pilot Operated 2 Port Solenoid Valve
Series VXD
Specifications
For Water
∗ Possible to use this for air.
Note that the maximum operating pressure
differential and flow-rate characteristics
should be within the specifications for air.
Model/Valve Specifications
For Air
N.C.
Symbol
1
Refer to “Glossary of Terms”
on page 33 for symbol.
Normally Closed (N.C.)
Stainless
steel, C37
(Brass)
1/4 (8A)
3/8 (10A)
1/2 (15A)
3/8 (10A)
1/2 (15A)
3/4 (20A)
1 (25A)
Orifice diameter
[mmø]
Model
10
VXD232
15
VXD242
20
VXD252
VXD262
25
Maximum operating pressure differential
Flow-rate characteristics
Minimum operating
Maximum system
pressure differential Note 1) [MPa]
Av (x 10−6m2) Conversion Cv pressure [MPa]
AC
DC
1.9
46
0.7
0.5
2.4
58
2.4
58
4.5
0.02
110
1.5
5.5
130
1.0
1.0
9.5
230
13
310
Note 2)
Weight
[g]
480
480
480
720
720
840
1360
For Heated water
Port size
Note 1) Be aware that even if the pressure difference is above the minimum operating pressure differential when the valve is closed, the pressure difference
may fall below the minimum operating pressure differential when the valve opens, depending on the power of the supply source (pumps,
compressors, etc.) or the type of pipe restrictions.
Note 2) Weight of grommet type. Add 10 g for conduit type, 30 g for DIN terminal type, 60 g for conduit terminal type respectively.
Refer to “Glossary of Terms” on page 33 for details on minimum operating pressure differential, the maximum operating pressure differential, maximum
system pressure.
Fluid and Ambient Temperature
Valve Leakage
1 to 60 Note)
−20 to 60
Note) No freezing
Seal material
NBR, FKM
Leakage rate (Water) Note)
VXD23 to 26 (8A to 25A)
0.2 cm3/min or less
External Leakage
Seal material
NBR, FKM
Leakage rate (Water) Note)
VXD23 to 26 (8A to 25A)
0.1 cm3/min or less
Note) Leakage is the value at ambient temperature 20°C.
Dimensions
Ambient temperature [°C]
Construction Options
Internal Leakage
Fluid temperature [°C]
For High
temperature oil
Body
material
For Oil
For Water
2
7
Series VXD
For Water
Model/Valve Specifications
N.O.
Symbol
2
1
Refer to “Glossary of Terms”
on page 33 for symbol.
Normally Open (N.O.)
Body
material
Port size
Stainless
steel, C37
(Brass)
1/4 (8A)
3/8 (10A)
1/2 (15A)
3/8 (10A)
1/2 (15A)
3/4 (20A)
1 (25A)
Orifice diameter
[mmø]
Model
10
VXD2A2
15
VXD2B2
20
25
VXD2C2
VXD2D2
Maximum operating pressure differential
Flow-rate characteristics
Minimum operating
Maximum system
pressure differential Note 1) [MPa]
Av (x 10−6m2) Conversion Cv pressure [MPa]
AC
DC
1.9
46
0.4
0.3
2.4
58
2.4
58
4.5
0.02
110
1.5
5.5
130
0.7
0.7
9.5
230
13
310
Note 2)
Weight
[g]
500
500
500
740
740
860
1390
Note 1) Be aware that even if the pressure difference is above the minimum operating pressure differential when the valve is closed, the pressure difference
may fall below the minimum operating pressure differential when the valve opens, depending on the power of the supply source (pumps,
compressors, etc.) or the type of pipe restrictions.
Note 2) Weight of grommet type. Add 10 g for conduit type, 30 g for DIN terminal type, 60 g for conduit terminal type respectively.
Refer to “Glossary of Terms” on page 33 for details on minimum operating pressure differential, the maximum operating pressure differential, maximum
system pressure.
Fluid and Ambient Temperature
Valve Leakage
Internal Leakage
Fluid temperature [°C]
Ambient temperature [°C]
1 to 60 Note)
−20 to 60
Note) No freezing
Seal material
NBR, FKM
Leakage rate (Water) Note)
VXD2A to 2D (8A to 25A)
0.2 cm3/min or less
External Leakage
Seal material
NBR, FKM
Leakage rate (Water) Note)
VXD2A to 2D (8A to 25A)
0.1 cm3/min or less
Note) Leakage is the value at ambient temperature 20°C.
8
Pilot Operated 2 Port Solenoid Valve
Series VXD
For Water
RoHS
Specifications
How to Order
VXD2 3 2 A A A
Fluid
With bracket
—
XB
Body material/Port size/Orifice diameter
10A
A
4
B
15A
10A
15A
5
C
20A
6
D
25A
N.O.
N.C.
N.O.
N.C.
N.O.
N.C.
N.O.
G
H
J
K
C37
(Brass)
1/4
3/8
1/2
Stainless
steel
∗ The bracket for aluminium, C37 (Brass) and
stainless steel body type of the VXD23 is
shipped together with the product, but not
assembled. (Refer to the figure below for
mounting.)
Orifice diameter
1/4
10
VXD2A3 Bracket mounting dimensions
3/8
1/2
C37
(Brass)
3/8
Stainless
steel
3/8
L
M
C37 (Brass)
N
P
C37 (Brass)
Stainless steel
Stainless steel
1/2
Port size: For 1/4, 3/8
15
Bracket
1/2
3/4
20
1
25
Tightening torque of 2 to 3 N·m
Port size: For 1/2
Voltage/Electrical entry (coil insulation type: Class B)
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
For Oil
8A
A
B
C
D
E
F
Port size
For Heated water
N.C.
Body
material
Electrical
entry
Conduit terminal (With
surge voltage suppressor)
Bracket
Conduit
(With surge
voltage
suppressor)
Faston terminal
Tightening torque of 2 to 3 N·m
Other options
Symbol
DIN terminal
(With surge
voltage
suppressor,
with light)
Conduit terminal
(With surge
voltage
suppressor,
with light)
For High
temperature oil
3
Symbol
Construction Options
Size
Valve
type
—
A
B
C
D
E
F
G
H
K
L
Z
Seal
Oil-free
material Note)
—
NBR
NBR
—
FKM
—
NBR
FKM
—
FKM
NBR
Port thread
Rc
G
NPT
Rc
G
NPT
G
NPT
Rc
G
NPT
Rc
Dimensions
Size—Valve type
Symbol
No
Yes
For Air
Water
For Water
2
Note) For low concentration ozone resistant and
deionised water, select seal material FKM.
DIN terminal
(With surge
voltage
suppressor,
without DIN
connector)
Dimensions → Page on and after 23 (Single Unit)
9
Series VXD
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.
∗ Possible to use this for air and water.
Note that the maximum operating pressure differential and
flow-rate characteristics should be within the specifications of
the fluid used.
Model/Valve Specifications
N.C.
Symbol
2
1
Refer to “Glossary of Terms”
on page 33 for symbol.
Normally Closed (N.C.)
Body
material
Stainless
steel, C37
(Brass)
Port size
Orifice diameter
[mmø]
Model
10
VXD233
15
VXD243
20
25
VXD253
VXD263
1/4 (8A)
3/8 (10A)
1/2 (15A)
3/8 (10A)
1/2 (15A)
3/4 (20A)
1 (25A)
Maximum operating pressure differential
Flow-rate characteristics
Minimum operating
Maximum system
Av (x 10−6m2) Conversion Cv pressure [MPa]
pressure differential Note 1) [MPa]
AC
DC
1.9
46
0.4
0.5
2.4
58
2.4
58
4.5
110
1.5
0.02
5.5
130
0.7
0.7
9.5
230
13
310
Weight
[g]
Note 2)
480
480
480
720
720
840
1360
Note 1) Be aware that even if the pressure difference is above the minimum operating pressure differential when the valve is closed, the pressure
difference may fall below the minimum operating pressure differential when the valve opens, depending on the power of the supply source (pumps,
compressors, etc.) or the type of pipe restrictions.
Note 2) Weight of grommet type. Add 10 g for conduit type, 30 g for DIN terminal type, 60 g for conduit terminal type respectively.
Refer to “Glossary of Terms” on page 33 for details on minimum operating pressure differential, the maximum operating pressure differential, maximum
system pressure.
Fluid and Ambient Temperature
Valve Leakage
Internal Leakage
Fluid temperature [°C]
−5 Note)
Ambient temperature [°C]
to 60
Note) Kinematic viscosity: 50 mm2/s or less
Seal material
−20 to 60
FKM
Leakage rate (Oil) Note)
VXD23 to 26 (8A to 25A)
0.2 cm3/min or less
External Leakage
Seal material
FKM
Leakage rate (Oil) Note)
VXD23 to 26 (8A to 25A)
0.1 cm3/min or less
Note) Leakage is the value at ambient temperature 20°C.
10
Pilot Operated 2 Port Solenoid Valve
Series VXD
For Oil
When the fluid is oil.
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.
Specifications
The kinematic viscosity must not exceed 50 mm2/s.
Model/Valve Specifications
For Air
N.O.
Symbol
1
Refer to “Glossary of Terms”
on page 33 for symbol.
Normally Open (N.O.)
Stainless
steel, C37
(Brass)
1/4 (8A)
3/8 (10A)
1/2 (15A)
3/8 (10A)
1/2 (15A)
3/4 (20A)
1 (25A)
Orifice diameter
[mmø]
Model
10
VXD2A3
15
VXD2B3
20
25
VXD2C3
VXD2D3
Maximum operating pressure differential
Flow-rate characteristics
Minimum operating
Maximum system
Av (x 10−6m2) Conversion Cv pressure [MPa]
pressure differential Note 1) [MPa]
AC
DC
1.9
46
0.4
0.3
2.4
58
2.4
58
4.5
1.5
0.02
110
5.5
130
0.6
0.6
9.5
230
13
310
Weight
[g]
Note 2)
500
500
500
740
740
860
1390
For Heated water
Port size
Note 1) Be aware that even if the pressure difference is above the minimum operating pressure differential when the valve is closed, the pressure
difference may fall below the minimum operating pressure differential when the valve opens, depending on the power of the supply source (pumps,
compressors, etc.) or the type of pipe restrictions.
Note 2) Weight of grommet type. Add 10 g for conduit type, 30 g for DIN terminal type, 60 g for conduit terminal type respectively.
Refer to “Glossary of Terms” on page 33 for details on minimum operating pressure differential, the maximum operating pressure differential, maximum
system pressure.
Fluid and Ambient Temperature
Valve Leakage
−5 Note) to 60
−20 to 60
Note) Kinematic viscosity: 50 mm2/s or less
Seal material
FKM
Leakage rate (Oil) Note)
VXD2A to 2D (8A to 25A)
0.2 cm3/min or less
External Leakage
Seal material
FKM
Leakage rate (Oil) Note)
VXD2A to 2D (8A to 25A)
0.1 cm3/min or less
Note) Leakage is the value at ambient temperature 20°C.
Dimensions
Ambient temperature [°C]
Construction Options
Internal Leakage
Fluid temperature [°C]
For High
temperature oil
Body
material
For Oil
For Water
2
11
Series VXD
For Oil
RoHS
How to Order
VXD2 3 3 A A A
Common Specifications
Seal material
FKM
Fluid
3
With bracket
Oil
—
XB
Body material/Port size/Orifice diameter
Size—Valve type
Symbol
Size
3
Valve
type
N.C.
8A
10A
A
4
B
15A
10A
15A
5
C
20A
6
D
25A
N.O.
N.C.
N.O.
N.C.
N.O.
N.C.
N.O.
Symbol
A
B
C
D
E
F
G
H
J
K
Body
material
Port size
∗ The bracket for aluminium, C37 (Brass) and
stainless steel body type of the VXD23 is
shipped together with the product, but not
assembled. (Refer to the figure below for
mounting.)
Orifice diameter
1/4
C37
(Brass)
Stainless
steel
3/8
1/2
1/4
10
VXD2A3 Bracket mounting dimensions
3/8
1/2
C37
(Brass)
3/8
Stainless
steel
3/8
L
M
C37 (Brass)
N
P
C37 (Brass)
Stainless steel
Stainless steel
1/2
Port size: For 1/4, 3/8
15
Bracket
1/2
3/4
20
1
25
Tightening torque of 2 to 3 N·m
Port size: For 1/2
Voltage/Electrical entry (coil insulation type: Class B)
12
No
Yes
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)
Bracket
Conduit
(With surge
voltage
suppressor)
Faston terminal
Tightening torque of 2 to 3 N·m
Other options
Symbol Oil-free
DIN terminal
(With surge
voltage
suppressor,
with light)
—
A
B
D
E
Z
—
—
Port thread
Rc
G
NPT
G
NPT
Rc
Conduit terminal
(With surge
voltage
suppressor,
with light)
DIN terminal
(With surge
voltage
suppressor,
without DIN
connector)
Dimensions → Page on and after 23 (Single Unit)
Pilot Operated 2 Port Solenoid Valve
Series VXD
Specifications
For Heated water
∗ Possible to use this for air (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.
Model/Valve Specifications
For Air
N.C.
Symbol
1
Refer to “Glossary of Terms”
on page 33 for symbol.
Normally Closed (N.C.)
Stainless
steel, C37
(Brass)
1/4 (8A)
3/8 (10A)
1/2 (15A)
3/8 (10A)
1/2 (15A)
3/4 (20A)
1 (25A)
Orifice diameter
[mmø]
Model
10
VXD235
15
VXD245
20
25
VXD255
VXD265
Maximum operating pressure differential
Flow-rate characteristics
Minimum operating
Maximum system
pressure differential Note 1) [MPa]
Av (x 10−6m2) Conversion Cv pressure [MPa]
AC
1.9
46
0.7
2.4
58
2.4
58
4.5
0.02
110
1.5
5.5
130
1.0
9.5
230
13
310
Weight Note 2)
[g]
480
480
480
720
720
840
1360
For Heated water
Port size
Note 1) Be aware that even if the pressure difference is above the minimum operating pressure differential when the valve is closed, the pressure
difference may fall below the minimum operating pressure differential when the valve opens, depending on the power of the supply source (pumps,
compressors, etc.) or the type of pipe restrictions.
Note 2) Weight of grommet type. Add 10 g for conduit type, 60 g for conduit terminal type respectively.
Refer to “Glossary of Terms” on page 33 for details on minimum operating pressure differential, the maximum operating pressure differential, maximum
system pressure.
Fluid and Ambient Temperature
Valve Leakage
1 to 99
−20 to 60
Note) No freezing
Seal material
EPDM
Leakage rate (Water) Note)
VXD23 to 26 (8A to 25A)
0.2 cm3/min or less
External Leakage
Seal material
EPDM
Leakage rate (Water) Note)
VXD23 to 26 (8A to 25A)
0.1 cm3/min or less
Note) Leakage is the value at ambient temperature 20°C.
Dimensions
Ambient temperature [°C]
Construction Options
Internal Leakage
Fluid temperature [°C]
For High
temperature oil
Body
material
For Oil
For Water
2
13
Series
VXD
For Heated water
Model/Valve Specifications
N.O.
Symbol
2
1
Refer to “Glossary of Terms”
on page 33 for symbol.
Normally Open (N.O.)
Body
material
Port size
Stainless
steel, C37
(Brass)
1/4 (8A)
3/8 (10A)
1/2 (15A)
3/8 (10A)
1/2 (15A)
3/4 (20A)
1 (25A)
Orifice diameter
[mmø]
Model
10
VXD2A5
15
VXD2B5
20
25
VXD2C5
VXD2D5
Maximum operating pressure differential
Flow-rate characteristics
Minimum operating
Maximum system
pressure differential Note 1) [MPa]
Av (x 10−6m2) Conversion Cv pressure [MPa]
AC
1.9
46
0.4
2.4
58
2.4
58
4.5
0.02
110
1.5
5.5
130
0.7
9.5
230
13
310
Weight
[g]
Note 2)
500
500
500
740
740
860
1390
Note 1) Be aware that even if the pressure difference is above the minimum operating pressure differential when the valve is closed, the pressure
difference may fall below the minimum operating pressure differential when the valve opens, depending on the power of the supply source (pumps,
compressors, etc.) or the type of pipe restrictions.
Note 2) Weight of grommet type. Add 10 g for conduit type, 60 g for conduit terminal type respectively.
Refer to “Glossary of Terms” on page 33 for details on minimum operating pressure differential, the maximum operating pressure differential, maximum
system pressure.
Fluid and Ambient Temperature
Valve Leakage
Internal Leakage
Fluid temperature [°C]
1 to 99
Note) No freezing
Ambient temperature [°C]
Seal material
−20 to 60
EPDM
Leakage rate (Water) Note)
VXD2A to 2D (8A to 25A)
0.2 cm3/min or less
External Leakage
Seal material
EPDM
Leakage rate (Water) Note)
VXD2A to 2D (8A to 25A)
0.1 cm3/min or less
Note) Leakage is the value at ambient temperature 20°C.
14
Pilot Operatded 2 Port Solenoid Valve
Series VXD
For Heated water
VXD2 3 5 A B A
Common Specifications
Seal material
EPDM
Specifications
RoHS
How to Order
Fluid
5
Heated water
A
4
B
15A
10A
15A
5
C
20A
6
D
25A
N.O.
N.C.
N.O.
N.C.
N.O.
N.C.
N.O.
G
H
J
K
C37
(Brass)
Port size
* The bracket for aluminium, C37 (Brass) and
stainless steel body type of the VXD23 is
shipped together with the product, but not
assembled. (Refer to the figure below for
mounting.)
1/4
3/8
1/2
Stainless
steel
Orifice diameter
1/4
10
VXD2A3 Bracket mounting dimensions
3/8
1/2
C37
(Brass)
3/8
Stainless
steel
3/8
L
M
C37 (Brass)
N
P
C37 (Brass)
Stainless steel
Stainless steel
1/2
Port size: For 1/4, 3/8
15
1/2
Bracket
3/4
20
1
25
Tightening torque of 2 to 3 N·m
Voltage/Electrical entry
(coil insulation type: Class H)
Symbol
Voltage
Port size: For 1/2
Electrical
entry
100 VAC
Grommet
(With surge
110 VAC
voltage
200 VAC
suppressor)
230 VAC
100 VAC
Conduit terminal
(With surge
110 VAC
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
Conduit terminal
220 VAC
(With surge
240 VAC
voltage suppressor)
24 VAC
48 VAC
Conduit
220 VAC
(With surge
voltage
240 VAC
suppressor)
24 VAC
100 VAC
110 VAC
Conduit terminal
200 VAC
(With surge
230 VAC
voltage
48 VAC
suppressor,
with light)
220 VAC
240 VAC
24 VAC
∗ DIN terminal, Faston terminal or DC
specification are not available.
B
C
D
E
N
P
Q
R
T
U
V
W
Z1A
Z1B
Z1C
Z1U
Z1K
Z1L
Z1M
Z1W
Z1P
Z1Q
Z1R
Z1Y
Z2L
Z2M
Z2N
Z2P
Z2Q
Z2R
Z2S
Z2W
For Water
10A
A
B
C
D
E
F
Body
material
For Oil
N.C.
Symbol
For Heated water
8A
Valve
type
For High
temperature oil
3
Size
No
Yes
Bracket
Tightening torque of 2 to 3 N·m
Other options
Symbol Oil-free
—
A
B
D
E
Z
—
—
Port thread
Rc
G
NPT
G
NPT
Rc
Construction Options
Symbol
—
XB
Body material/Port size/Orifice diameter
Dimensions
Size—Valve type
For Air
With bracket
Dimensions → Page on and after 29 (Single Unit)
15
Series
VXD
When the fluid is oil.
For High temperature oil
∗ Possible to use this for air (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.
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.
Model/Valve Specifications
N.C.
Symbol
2
1
Refer to “Glossary of Terms”
on page 33 for symbol.
Normally Closed (N.C.)
Body
material
Port size
Stainless
steel, C37
(Brass)
1/4 (8A)
3/8 (10A)
1/2 (15A)
3/8 (10A)
1/2 (15A)
3/4 (20A)
1 (25A)
Orifice diameter
[mmø]
Model
10
VXD236
15
VXD246
20
25
VXD256
VXD266
Maximum operating pressure differential
Flow-rate characteristics
Minimum operating
Maximum system
Av (x 10−6m2) Conversion Cv pressure [MPa]
pressure differential Note 1) [MPa]
AC
1.9
46
0.5
2.4
58
2.4
58
4.5
0.02
110
1.5
5.5
130
0.7
9.5
230
13
310
Weight
[g]
Note 2)
480
480
480
720
720
840
1360
Note 1) Be aware that even if the pressure difference is above the minimum operating pressure differential when the valve is closed, the pressure
difference may fall below the minimum operating pressure differential when the valve opens, depending on the power of the supply source (pumps,
compressors, etc.) or the type of pipe restrictions.
Note 2) Weight of grommet type. Add 10 g for conduit type, 60 g for conduit terminal type respectively.
Refer to “Glossary of Terms” on page 33 for details on minimum operating pressure differential, the maximum operating pressure differential, maximum
system pressure.
Fluid and Ambient Temperature
Valve Leakage
Internal Leakage
Fluid temperature [°C]
Ambient temperature [°C]
−5 Note) to 100
−20 to 60
Note) Kinematic viscosity: 50 mm2/s or less
Seal material
FKM
Leakage rate (Oil) Note)
VXD23 to 26 (8A to 25A)
0.2 cm3/min or less
External Leakage
Seal material
FKM
Leakage rate (Oil) Note)
VXD23 to 26 (8A to 25A)
0.1 cm3/min or less
Note) Leakage is the value at ambient temperature 20°C.
16
Pilot Operated 2 Port Solenoid Valve
Series VXD
For High temperature oil
When the fluid is oil.
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.
Specifications
The kinematic viscosity must not exceed 50 mm2/s.
Model/Valve Specifications
For Air
N.O.
Symbol
1
Refer to “Glossary of Terms”
on page 33 for symbol.
Normally Open (N.O.)
Stainless
steel, C37
(Brass)
1/4 (8A)
3/8 (10A)
1/2 (15A)
3/8 (10A)
1/2 (15A)
3/4 (20A)
1 (25A)
Orifice diameter
[mmø]
Model
10
VXD2A6
15
VXD2B6
20
25
VXD2C6
VXD2D6
Maximum operating pressure differential
Flow-rate characteristics
Minimum operating
Maximum system
Av (x 10−6m2) Conversion Cv pressure [MPa]
pressure differential Note 1) [MPa]
AC
1.9
46
0.4
2.4
58
2.4
58
4.5
0.02
110
1.5
5.5
130
0.6
9.5
230
13
310
Weight
[g]
Note 2)
500
500
500
740
740
860
1390
For Heated water
Port size
Note 1) Be aware that even if the pressure difference is above the minimum operating pressure differential when the valve is closed, the pressure
difference may fall below the minimum operating pressure differential when the valve opens, depending on the power of the supply source (pumps,
compressors, etc.) or the type of pipe restrictions.
Note 2) Weight of grommet type. Add 10 g for conduit type, 60 g for conduit terminal type respectively.
Refer to “Glossary of Terms” on page 33 for details on minimum operating pressure differential, the maximum operating pressure differential, maximum
system pressure.
Valve Leakage
Construction Options
Fluid and Ambient Temperature
Internal Leakage
Ambient temperature [°C]
−5 Note) to 100
−20 to 60
Note) Kinematic viscosity: 50 mm2/s or less
Seal material
FKM
Leakage rate (Oil) Note)
VXD2A to 2D (8A to 25A)
0.2 cm3/min or less
External Leakage
Seal material
FKM
Leakage rate (Oil) Note)
VXD2A to 2D (8A to 25A)
0.1 cm3/min or less
Note) Leakage is the value at ambient temperature 20°C.
Dimensions
Fluid temperature [°C]
For High
temperature oil
Body
material
For Oil
For Water
2
17
Series VXD
For High temperature oil
RoHS
How to Order
VXD2 3 6 A B A
Common Specifications
Seal material
FKM
Fluid
6
High temperature oil
With bracket
Size—Valve type
Symbol
3
Size
8A
Valve
type
N.C.
10A
A
4
B
5
C
6
D
15A
10A
15A
20A
25A
N.O.
N.C.
N.O.
N.C.
N.O.
N.C.
N.O.
—
XB
Body material/Port size/Orifice diameter
Symbol
A
B
C
D
E
F
G
H
J
K
Body
material
Port size
Orifice diameter
∗ The bracket for aluminium, C37 (Brass) and
stainless steel body type of the VXD23 is
shipped together with the product, but not
assembled. (Refer to the figure below for
mounting.)
1/4
C37
(Brass)
Stainless
steel
3/8
1/2
1/4
10
3/8
VXD2A3 Bracket mounting dimensions
1/2
C37
(Brass)
3/8
Stainless
steel
3/8
L
M
C37 (Brass)
N
P
C37(Brass)
Stainless steel
Stainless steel
1/2
Port size: For 1/4, 3/8
15
1/2
Bracket
3/4
20
1
25
Tightening torque of 2 to 3 N·m
Voltage/Electrical entry
(coil insulation type: Class H)
Symbol
Voltage
Port size: For 1/2
Electrical
entry
100 VAC
Grommet
(With surge
110 VAC
voltage
200 VAC
suppressor)
230 VAC
100 VAC
Conduit terminal
(With surge
110 VAC
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
Conduit terminal
220 VAC
(With surge
240 VAC
voltage suppressor)
24 VAC
48 VAC
Conduit
220 VAC
(With surge
voltage
240 VAC
suppressor)
24 VAC
100 VAC
110 VAC
Conduit terminal
200 VAC
(With surge
230 VAC
voltage
48 VAC
suppressor,
with light)
220 VAC
240 VAC
24 VAC
∗ DIN terminal, Faston terminal or DC
specification are not available.
B
C
D
E
N
P
Q
R
T
U
V
W
Z1A
Z1B
Z1C
Z1U
Z1K
Z1L
Z1M
Z1W
Z1P
Z1Q
Z1R
Z1Y
Z2L
Z2M
Z2N
Z2P
Z2Q
Z2R
Z2S
Z2W
No
Yes
Bracket
Tightening torque of 2 to 3 N·m
Other options
Symbol Oil-free
—
A
B
D
E
Z
—
—
Port thread
Rc
G
NPT
G
NPT
Rc
Dimensions → Page on and after 29 (Single Unit)
18
Series
VXD
Construction
i
i
!2
!2
!0
!0
IN(P1)
r
o
y
u
r
A
B
C
e
q
w
!1
o
u
IN(P1)
OUT(P2)
OUT(P2)
B
IN(P1)
e
w
VXD23
For Air
t
IN(P1)
For Water
y
!1
A
C
q
For Oil
t
Specifications
Normally Closed (N.C.)
VXD24
For Heated water
i
!2
t
!1
B
o
C
For High
temperature oil
!0
u
IN(P1)
r
OUT(P2)
e
w
IN(P1)
q
VXD25, 26
Component Parts
No.
Description
1
Body
2
Bonnet
3
4
5
6
7
8
9
10
11
12
Diaphragm assembly
Spring
O-ring
Buffer
Stopper
Core
Tube
Spring
Armature assembly
Solenoid coil
Model
VXD23
VXD24 to 26
VXD23, 24
VXD25, 26
VXD23 to 26
VXD23 to 26
VXD23 to 26
VXD23, 24
VXD23 to 26
Material
C37 (Brass), Stainless steel, Aluminium, Resin (PBT)
C37 (Brass), Stainless steel
Stainless steel
C37 (Brass), Stainless steel
Stainless steel, NBR, FKM, EPDM
Stainless steel
NBR, FKM, EPDM
PPS
NBR, FKM, EPDM
Fe
Stainless steel
Stainless steel
Stainless steel, NBR, FKM, EPDM, Resin (PPS)
Cu + Fe + Resin
Operation
<Valve opened>
When coil !2 is energized, armature assembly !1 is attracted
by core i and pilot valve A is opened.
When A is opened, the pressure in pressure chamber B is
reduced and main valve C is opened.
<Valve closed>
When coil !2 is de-energized, pilot valve A is closed, pressure in pressure chamber B increases, and main valve C is
closed.
19
Dimensions
Construction Options
A
VXD
Series
Construction
Normally Open (N.O.)
!4
u
!4
u
i
i
!2
!0
!1
t
!1
o
y
!0
!2
t
y
IN(P1)
r
OUT(P2)
!3
r
A
B
C
e
q
w
B
IN(P1)
e
w
VXD2A
!4
o
IN(P1)
!3
OUT(P2)
A
IN(P1)
VXD2B
C
q
u
i
!2
!0
t
!1
o
IN(P1)
!3
B
OUT(P2)
r
e
IN(P1)
A
C
q
w
VXD2C, 2D
Component Parts
No.
Description
1
Body
2
Bonnet
3
4
5
6
7
8
9
10
11
12
13
14
Diaphragm assembly
Spring
O-ring
Buffer
Sleeve assembly
Push rod assembly
Stopper
O-ring A
O-ring B
Adapter
O-ring C
Solenoid coil
20
Model
VXD2A
VXD2B to 2D
VXD2A, 2B
VXD2C, 2D
VXD2A to 2D
VXD2A to 2D
VXD2A to 2D
VXD2A, 2B
VXD2A to 2D
Material
C37 (Brass), Stainless steel, Aluminum, Resin (PBT)
C37 (Brass), Stainless steel
Stainless steel
C37 (Brass), Stainless steel
Stainless steel, NBR, FKM, EPDM
Stainless steel
NBR, FKM, EPDM
PPS
Stainless steel, Resin (PPS)
Resin (PPS), Stainless steel, NBR, FKM, EPDM
Stainless steel
NBR, FKM, EPDM
NBR, FKM, EPDM
Resin (PPS)
NBR, FKM, EPDM
Cu + Fe + Resin
Operation
<Valve opened>
When coil !4 is energized, (already opened) pilot valve A is
closed, pressure in pressure chamber B increases, and
main valve C is closed.
<Valve closed>
When coil !4 is de-energized, (already closed) pilot valve A
is opened, pressure in pressure chamber B decreases, and
main valve C is opened.
Pilot Operated 2 Port Solenoid Valve
For information on handling one-touch
fittings (KQ2 series) and appropriate tubing,
refer to SMC website, http://www.smc.eu
Series VXD
For Air
3
Grommet
U
d
e
C
E
1.2
IN
2xP
Port size
F
For Water
B
OUT
a
b
A
5.5
T
7.5
For Air
≈ 300
Specifications
Dimensions/VXD2A Body Material: Resin (ø10, ø3/8", ø12)
D
I
≈ 4.5
J
K
L
≈ 4.5
f
E
1.2
For Oil
U
A
IN
B
OUT
a
b
T
5.5
7.5
For Heated water
≈ 300
d
e
C
For High
temperature oil
Grommet (with surge
voltage suppressor)
2xP
Port size
F
D
I
≈ 4.5
J
K
L
≈ 4.5
f
U
Cable ø6 to ø12
V
31.5
G1/2
(44)
E
Construction Options
d
e
C
DIN terminal
7.5
Dimensions
IN
B
OUT
a
b
A
5.5
T
1.2
2xP
Port size
F
D
I
≈ 4.5
J
K
L
≈ 4.5
f
Model
One-touch fitting
P
A
B
C
D
E
F
I
J
K
L
VXD2 A3
ø10, ø3/8", ø12
91
(97)
22.5
30
45
20
6
13.5
41.5
25
33
Model
VXD2 A3
One-touch fitting
P
ø10, ø3/8", ø12
Grommet
T
58.5
(64.5)
U
27
[mm]
Electrical entry
Grommet (with surge
DIN terminal
voltage suppressor)
T
T
U
U
V
45
50.5 64.5 52.5
30
(50.5)
(56)
Mounting bracket dimensions
a
b
d
e
f
58
65
67
52
25.5
( ): Denotes the Normally Open (N.O.) dimensions.
21
Series VXD
For Air
3
Dimensions/VXD2 A Body Material: Resin (ø10, ø3/8", ø12)
Conduit terminal
d
e
(U±2)
(V±2)
34
E
32
C
1.2
G1/2
IN
B
OUT
a
b
5.5
A
T
25
7.5
2xP
Port size
F
J
D
I
≈ 4.5
K
≈ 4.5
L
f
d
e
C
Conduit
≈ 280
E
23
U
1.2
7.5
IN
B
OUT
a
b
A
5.5
T
G1/2
2xP
Port size
F
I
D
≈ 4.5
J
K
≈ 4.5
L
f
d
e
C
Faston terminal
11
U
E
1.2
IN
B
OUT
a
b
A
5.5
T
7.5
2xP
Port size
F
I
D
≈ 4.5
J
K
≈ 4.5
L
f
[mm]
Electrical entry
Model
One-touch fitting
P
A
B
C
D
E
F
I
J
K
L
VXD2 A3
ø10, ø3/8", ø12
91
(97)
22.5
30
45
20
6
13.5
41.5
25
33
Model
VXD2 A3
One-touch fitting
P
ø10, ø3/8", ø12
Mounting bracket dimensions
a
b
d
e
f
58
65
67
52
25.5
( ): Denotes the Normally Open (N.O.) dimensions.
22
Conduit terminal
T
52.5
(58)
U
V
99.5
68.5
Conduit
T
52.5
(58)
U
47.5
Faston
terminal
T
58.5
(64.5)
U
23
Pilot Operated 2 Port Solenoid Valve
Series VXD
For Air/Water/Oil
3
Specifications
Dimensions/VXD2A Body Material: Aluminium, C37 (Brass), Stainless Steel
Grommet
3
≈ 300
U
E
VXD2 A Port size 04 (1/2)
(With bracket)
C
1.6
1.6 7.5
Grommet (with surge
voltage suppressor)
f
2xP
Port size
≈ 300
U
e
d
For Oil
f
For Water
L
(D)
e
d
C
E
For Heated water
K
I
T
IN
B
M
OUT
For High
temperature oil
F
J
A
2xP
Port size
IN
a
b
OUT
IN
B
OUT
18
M
a
b
5.5
A
T
5.5
For Air
7.5
2xP
Port size
Cable ø6 to ø12
K
I
L
(D)
U
E
C
V
Construction Options
DIN terminal
F
J
A
T
(44)
31.5
G1/2
IN
B
Dimensions
M
OUT
2xP
Port size
Model
Port size
P
VXD2 A3
1/4, 3/8
1/2
Model
VXD2 A3
Port size
P
1/4, 3/8
1/2
A
B
88
22.5
(93.5)
F
J
K
I
L
(D)
C
D
E
F
I
J
K
30
50
20
4.5
5
11
13
37.5
42.5
25
M
C37 (Brass),
Grommet
L
Stainless Aluminium
steel body body type T
U
22
24 55.5
27
25
(61)
27
30
[mm]
Electrical entry
Grommet (with surge
DIN terminal
voltage suppressor)
T
T
U
U
V
47.5
42
30
64.5 52.5
(47.5)
(53)
Mounting bracket dimensions
a
b
d
e
f
48.5
55
28
67
52
47
53.5
27
( ): Denotes the Normally Open (N.O.) dimensions.
Aluminium body is for air. Refer to page 4 for details.
23
Series VXD
For Air/Water/Oil
3
Dimensions/VXD2 A Body Material: Aluminium, C37 (Brass), Stainless Steel
Conduit terminal
(U±2)
(V±2)
E
M
A
T
25
32
34
G1/2
IN
B
OUT
2xP
Port size
F
J
K
I
L
(D)
Conduit
≈ 280
E
C
23
U
A
T
G1/2
IN
2xP
Port size
K
I
F
J
3
VXD2 A CF
3
B
M
OUT
Note) Only the VXD2 A with port size of 04 (1/2)
has threads on the bottom of the body.
L
(D)
18
2 x M4 x 0.7
Thread depth 8
Faston terminal
U
11
C
E
A
T
OUT
IN
B
M
OUT
2xP
Port size
F
J
I
K
L
(D)
[mm]
Electrical entry
Model
Port size
P
A
B
C
D
E
F
I
J
K
L
M
VXD2 A3
1/4, 3/8
1/2
88
(93.5)
22.5
30
50
20
4.5
5
11
13
37.5
42.5
25
25
22
27
( ): Denotes the Normally Open (N.O.) dimensions.
Aluminium body is for air. Refer to page 4 for details.
24
Conduit terminal
T
49.5
(55)
U
V
99.5
68.5
Conduit
T
49.5
(55)
U
47.5
Faston
terminal
T
U
55.5
23
(61)
Pilot Operated 2 Port Solenoid Valve
Series VXD
Air
Water
Oil
4
Grommet
≈ 300
C
E
IN
f
B
M
OUT
For Air
A
T
U
Specifications
Dimensions/VXD2 B Body Material: C37 (Brass), Stainless Steel
I
F
2.6
J
For Water
2xP
Port size
2 x ø8.5
e
d
a
b
K
L
C
E
A
T
U
For Heated water
≈ 300
IN
B
M
OUT
For High
temperature oil
Grommet (with surge
voltage suppressor)
For Oil
(D)
F
2xP
Port size
I
K
U
E
C
31.5
V
IN
B
M
OUT
Dimensions
A
T
(44)
G1/2
Construction Options
Cable ø6 to ø12
DIN terminal
L
(D)
J
F
2xP
Port size
I
K
J
Model
Port size
P
VXD2 B4
3/8, 1/2
Model
VXD2 B4
Port size
P
3/8, 1/2
A
B
96.5
(102.5) 25.5
L
(D)
C
D
E
F
I
J
K
L
M
30
70
20
11.5
14
50
33
37
28
Grommet
T
61
(67)
U
27
[mm]
Electrical entry
Grommet (with surge
DIN terminal
voltage suppressor)
T
T
U
U
V
53
47.5
30
64.5
52.5
(53.5)
(59)
Mounting bracket dimensions
a
b
d
e
f
47.5
71.5
57
34
39
( ): Denotes the Normally Open (N.O.) dimensions.
25
Series VXD
For Air/Water/Oil
4
Dimensions/VXD2 B Body Material: C37 (Brass), Stainless Steel
Conduit terminal
(U±2)
(V±2)
34
20
A
T
25
32
C
G1/2
IN
B
M
OUT
F
I
Conduit
≈ 280
L
(D)
C
E
23
U
K
2xP
Port size
J
A
T
G1/2
IN
B
M
OUT
F
2xP
Port size
I
K
J
Faston terminal
U
C
E
A
T
11
L
(D)
IN
B
M
OUT
F
2xP
Port size
I
K
J
L
(D)
[mm]
Electrical entry
Model
VXD2 B4
Port size
P
A
3/8, 1/2
96.5
(102.5)
B
25.5
C
30
D
70
( ): Denotes the Normally Open (N.O.) dimensions.
26
E
20
F
11.5
I
14
J
50
K
33
L
37
M
28
Conduit terminal
T
55
(61)
U
V
99.5
68.5
Conduit
T
55
(61)
U
47.5
Faston
terminal
T
U
61
23
(67)
Series VXD
Pilot Operated 2 Port Solenoid Valve
Air
5
Water
Oil
6
Grommet
≈ 300
E
C
IN
B
M
OUT
For Air
A
T
U
Specifications
Dimensions/VXD2 C /2D Body Material: C37 (Brass), Stainless Steel
2 x ø8.5
I
e
d
K
a
b
E
C
A
T
U
For Oil
≈ 300
Grommet (with surge
voltage suppressor)
L
(D)
For Heated water
2.6
F
J
For Water
f
2xP
Port size
IN
B
For High
temperature oil
M
OUT
U
L
(D)
E
C
V
G1/2
A
T
(44)
Cable ø6 to ø12
K
31.5
DIN terminal
I
Construction Options
F
J
2xP
Port size
IN
B
Dimensions
M
OUT
F
J
Model
Port size
P
A
VXD2 C5
3/4
VXD2 D6
1
107.5
(113.5)
126.5
(134.5)
Model
VXD2 C5
VXD2 D6
Port size
P
3/4
1
a
50.5
55.5
2xP
Port size
I
K
L
(D)
B
C
D
E
F
I
29
30
71
20
4.5
17
33
35
95
22
4.5
20
J
K
L
M
51
32.5
38.5
35
59.5
45.5
49.5
42
[mm]
Electrical entry
Grommet (with surge
Grommet
DIN terminal
voltage suppressor)
T
T
U
T
U
V
U
68.5 27
55
60.5 64.5 52.5
30
(61)
(74.5)
(66.5)
82.5 29.5
69
74.5 67
55
(90.5)
(77) 32.5 (82.5)
Mounting bracket dimensions
b
d
e
f
77.5
74
51
45.5
85.5
81
58
49.5
( ): Denotes the Normally Open (N.O.) dimensions.
27
Series VXD
For Air/Water/Oil
5
6
Dimensions/VXD2C /2D Body Material: C37 (Brass), Stainless Steel
Conduit terminal
(U±2)
(V±2)
E
34
G1/2
A
T
25
32
C
IN
B
M
OUT
F
I
≈ 280
U
L
(D)
E
C
23
Conduit
K
2xP
Port size
J
A
T
G1/2
IN
B
M
OUT
F
2xP
Port size
I
K
J
Faston terminal
U
E
C
A
T
11
L
(D)
IN
B
M
OUT
F
J
2xP
Port size
I
K
L
(D)
[mm]
Electrical entry
Model
Port size
P
A
B
C
D
E
F
I
VXD2 C5
3/4
29
30
71
20
4.5
17
VXD2 D6
1
107.5
(113.5)
126.5
(134.5)
33
35
95
22
4.5
20
Model
VXD2 C5
VXD2 D6
Port size
P
3/4
1
a
50.5
55.5
Mounting bracket dimensions
b
d
e
f
77.5
74
51
45.5
85.5
81
58
49.5
( ): Denotes the Normally Open (N.O.) dimensions.
28
J
K
L
M
51
32.5
38.5
35
59.5
45.5
49.5
42
Conduit terminal
T
U
62.5
99.5
(68.5)
76.5
(84.5) 102
V
68.5
71
Conduit
T
62.5
(68.5)
76.5
(84.5)
U
47.5
50
Faston
terminal
U
T
68.5 23
(74.5)
82.5
(90.5) 25.5
Pilot Operated 2 Port Solenoid Valve
Series VXD
For Heated water/High temperature oil
3
Specifications
Dimensions/VXD2A Body Material: C37 (Brass), Stainless Steel (1/4, 3/8, 1/2)
Grommet
≈ 300
U
(42)
≈ 40
E
C
VXD2 A3 Port size 04 (1/2)
(With bracket)
B
J
L
1.6
(D)
e
d
18
f
Conduit terminal
OUT
IN
f
(V±2)
e
d
2xP
Port size
E
32
34
For Heated water
(U±2)
3
C
25
VXD2 A F OUT
IN
B
2 x M4 x 0.7
Thread depth 8
K
I
F
L
18
(D)
J
Construction Options
2xP
Port size
Conduit
U
E
C
≈ 45
A
G1/2
For Heated water/
High temperature oil
Full-wave rectifier
OUT
IN
B
Dimensions
(42)
M
T
23
≈ 280
2xP
Port size
K
I
F
L
(D)
J
[mm]
Model
Port size
P
A
B
C
D
E
F
I
J
K
L
M
VXD2 A3
1/4, 3/8
1/2
88
(93.5)
22.5
30
50
20
4.5
5
11
13
37.5
42.5
25
25
22
27
Port size
P
1/4, 3/8
1/2
a
48.5
47
VXD2 A3
For High
temperature oil
Note) Only the VXD2 A with port size of 04 (1/2)
has threads on the bottom of the body.
A
M
T
3
G1/2
Model
For Water
K
For Oil
I
F
a
b
2xP
Port size
For Air
A
IN
M
OUT
a
b
T
2
For Heated water/
High temperature oil
Full-wave rectifier
Grommet
T
U
55.5
27
(61)
Electrical entry
Conduit terminal
V
T
U
49.5
108
77
(55)
Conduit
T
U
49.5
47.5
(55)
Mounting bracket dimensions
b
d
e
f
55
28
67
52
53.5
27
( ): Denotes the Normally Open (N.O.) dimensions.
29
Series VXD
For Heated water/High temperature oil
4
Dimensions/VXD2 B Body Material: C37 (Brass), Stainless Steel
Grommet
≈ 300
U
(42)
≈ 40
E
C
A
T
For Heated water/
High temperature oil
Full-wave rectifier
IN
f
B
M
OUT
I
2.6
F
2xP
Port size
2 x ø8.5
e
d
J
a
b
K
L
(D)
Conduit terminal
(U±2)
(V±2)
E
34
A
T
25
32
C
G1/2
IN
B
M
OUT
I
F
Conduit
≈ 280
U
L
(D)
E
C
≈ 45
(42)
23
K
2xP
Port size
J
T
G1/2
A
For Heated water/
High temperature oil
Full-wave rectifier
IN
B
M
OUT
F
I
2xP
Port size
K
L
(D)
J
[mm]
Model
Port size
P
A
B
C
D
E
F
I
J
K
L
M
VXD2 B4
3/8, 1/2
96.5
(102.5)
25.5
30
70
20
11.5
14
50
33
37
28
Port size
P
3/8, 1/2
a
47.5
Model
VXD2 B4
Mounting bracket dimensions
b
d
e
f
71.5
57
34
39
( ): Denotes the Normally Open (N.O.) dimensions.
30
Grommet
U
T
61
27
(67)
Electrical entry
Conduit terminal
T
V
U
55
108
77
(61)
Conduit
T
U
55
47.5
(61)
Series VXD
Pilot Operated 2 Port Solenoid Valve
Heated High
water temperature oil
5
6
Grommet
≈ 300
U
(42)
≈ 40
Specifications
Dimensions/VXD2 C /2D Body Material: C37 (Brass), Stainless Steel
E
C
IN
2.6
F
J
I
Port size
2xP
2 x ø8.5
a
b
For Water
f
B
M
OUT
For Air
A
T
For Heated water/
High temperature oil
Full-wave rectifier
e
d
K
L
Conduit terminal
(U±2)
(V±2)
E
For Oil
(D)
34
A
G1/2
For High
temperature oil
T
25
32
For Heated water
C
IN
B
M
OUT
I
U
23
E
C
≈ 45
(42)
L
(D)
A
T
G1/2
For Heated water/
High temperature oil
Full-wave rectifier
IN
B
M
OUT
Dimensions
≈ 280
Conduit
K
2xP
Port size
J
Construction Options
F
F
J
I
2xP
Port size
K
L
(D)
[mm]
Model
Port size
P
VXD2 C5
3/4
VXD2 D6
1
Model
VXD2 C5
VXD2 D6
Port size
P
3/4
1
A
107.5
(113.5)
126.5
(134.5)
a
50.5
55.5
B
C
D
E
F
I
29
30
71
20
4.5
17
33
35
95
22
4.5
20
K
L
M
51
32.5
38.5
35
59.5
45.5
49.5
42
J
Grommet
T
U
68.5
27
(74.5)
82.5
(90.5) 29.5
Electrical entry
Conduit terminal
U
T
V
62.5 108
77
(68.5)
76.5
(84.5) 110.5 79.5
Conduit
U
T
62.5 47.5
(68.5)
76.5
(84.5) 50
Mounting bracket dimensions
b
d
e
f
77.5
74
51
45.5
85.5
81
58
49.5
( ): Denotes the Normally Open (N.O.) dimensions.
31
Series VXD
Replacement Parts No.
DIN Connector
Without electrical option
C18312G6GCU
With electrical option (light)
GDM2A L
Electrical option
L
With light
Rated voltage
1
2
5
6
13
15
100 VAC, 110 VAC
200 VAC, 220 VAC
230 VAC, 240 VAC
24 VDC
12 VDC
24 VAC
48 VAC
Gasket for DIN Connector
VCW20-1-29-1
Lead Wire Assembly for Faston Terminal
(Set of 2 pcs.)
VX021S-1-16FB
3 Metal Body (C37 (Brass), Stainless steel, Aluminium)
Bracket Assembly for the VXD2 A
Port size: For 1/4, 3/8
VXD30S-14A-1
Port size: For 1/2
VXD30S-14A-3
∗ 2 mounting screws (M3 hexagon socket head cap screws) are shipped together with the bracket assembly, but not assembled.
32
Series
VXD
Glossary of Terms
Pressure Terminology
Others
1. Material
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.
NBR: Nitrile rubber
FKM: Fluoro rubber – Trade names: Viton®, Dai-el®, etc.
EPDM: Ethylene-propylene rubber
2. Oil-free treatment
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 in the solenoid valve portion must be
below the maximum operating pressure differential.]
4. Withstand pressure
The degreasing and washing of wetted parts
3. Symbol
In the symbol (
) Port 1 (IN) and Potr 2 (OUT) are shown
in a blocked condition ( ), but it is not possible to use the
valve in cases of reverse pressure, where the Port 2 pressure
is higher than the Port 1 pressure.
Faston Terminal
The pressure in which the valve must be withstood without a
drop in performance after holding for one minute under
prescribed (static) pressure and returning to the operating
pressure range. [value under the prescribed conditions]
Electrical Terminology
1. FastonTM 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.
1. Surge voltage
A high voltage which is momentarily generated by shutting off
the power in the shut-off area.
2. Enclosure
A degree of protection 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.
IP
Second characteristic numeral
First characteristic numeral
First 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
Second Characteristics:
Degrees of protection against water
0 Non-protected
1 Protected against vertically falling water drops
2 Protected against vertically falling water drops when enclosure tilted up to 15°
3 Protected against rainfall when enclosure tilted up to 60°
4 Protected against splashing water
5 Protected against water jets
6 Protected against powerful water jets
7 Protected against the effects of temporary immersion in water
8 Protected against the effects of continuous immersion in water
—
Dripproof type 1
Dripproof type 2
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.
33
Series VXD
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
Pneumatic
equipment
Process fluid
control
equipment
Conformed standard
C, b
—
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 characteri stics 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
Described by the practical units as following.
P2 + 0.1
≤ b , choked flow
P1 + 0.1
293
……………………………………………(1)
Q = 600 x C (P1 + 0.1)
273 + t
P2 + 0.1
When
> b , subsonic flow
P1 + 0.1
2
P2 + 0.1 − b
293 …………………
Q = 600 x C (P1 + 0.1) 1 − P1 + 0.1
(2)
273 + t
1−b
When
Q: Air flow rate [dm3/min (ANR)], dm3 (cubic decimetre) of SI unit are allowed to be described by L (litre).
1 dm3 = 1 L
34
Solenoid Valve Flow-rate Characteristics
Series VXD
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.
According to formula (1), the maximum flow rate = 600 x 2 x (0.4 + 0.1) x
293
= 600 [dm3/min (ANR)]
273 + 20
0.3 + 0.1
= 0.8
0.4 + 0.1
Based on Graph (1), the flow rate ratio will be 0.7 when the pressure ratio is 0.8 and b = 0.3.
Therefore, flow rate = Maximum flow rate x flow rate ratio = 600 x 0.7 = 420 [dm3/min(ANR)]
Flow rate ratio
Pressure ratio =
1
0.5
0.9
0.6
b = 0.1
0.8
0.2
0.7
0.3
0.6
0.4
0.5
0.4
0.3
P1 Equipment P2
0.2
C, b
Q
0.1
0
0 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
ø d1
Thermometer
3d1
10d2
Flow control
valve
3d2
Flow meter
Equipment
for test
Pipe for
measuring
pressure in the
downstream side
Fig. (1) Test circuit based on ISO 6358, JIS B 8390
35
Series VXD
2.2 Effective area S
(1) Conformed standard
JIS B 8390: 2000: Pneumatic fluid power—Components using compressible fluids—
How to test 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 or without reduced flow. It is
deduced from the calculation of the pressure changes inside an air tank 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
When
P2 + 0.1
≤ 0.5, choked flow
P1 + 0.1
Q = 120 x S (P1 + 0.1)
293
273 + t
...............................................................(3)
P2 + 0.1 > 0.5, subsonic flow
P1 + 0.1
Q = 240 x S (P2 + 0.1) (P1 - P2)
When
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 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 unknown for
equipment. In the formula (2) by the sonic conductance C, it is the same formula as when b = 0.5.
(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
Pressure switch
)
T
Thermometer
Pressure control
equipment
S : Effective area
V : Air tank capacity [dm3]
Air
Filter
supply
t : Discharging time [s]
Ps : Pressure inside air tank before discharging [MPa]
P : Residual pressure inside air tank after discharging [MPa]
T : Temperature inside air tank before discharging [K]
[mm2]
Control
circuit
Equipment
for test
Air tank
Shut off
valve
supply
Solenoid
valve
Pressure gauge
or pressure
convertor
Timer (Clock)
Pressure recorder
Fig. (2) Test circuit based on JIS B 8390
36
Rectifier tube on the
downstream side
(
293 ..............
(6)
Rectifier tube on the
upstream side
S = 12.1 V log10 PS + 0.1
t
P + 0.1
Solenoid Valve Flow-rate Characteristics
Series VXD
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 flow coefficient, Cv factor by the following formula which is based on the test conducted by the
test circuit analogous to ISO 6358.
Cv =
114.5
Q
…………………………………………………(7)
ΔP (P2 + Pa)
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: How to test 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 differential is 1 Pa. It is calculated using the following formula.
………………………………………………………………….
Av = Q
(8)
ΔP
Av : Flow coefficient [m2]
Q : Flow rate [m3/s]
ΔP : Pressure differential [Pa]
: Fluid density [kg/m3]
(3) Formula for flow rate
Described by the practical units. Also, the flow-rate characteristics are shown in Graph (2).
In the case of liquid:
ΔP ……………….………………………………………
(9)
Q = 1.9 x 106 Av
G
Q : Flow rate [L/min]
Av : Flow coefficient [m2]
ΔP : Pressure differential [MPa]
G : Specific gravity [water = 1]
In the case of saturated steam:
Q = 8.3 x 106 Av ΔP (P2 + 0.1) ……………………………….…………(10)
Q : Flow rate [kg/h]
Av : Flow coefficient [m2]
ΔP : Pressure differential [MPa]
P1 : Upstream pressure [MPa]: ΔP = P1 − P2
P2 : Downstream pressure [MPa]
37
Series VXD
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 differential is 1 bar.
Cv factor (Reference values): Value of the clean water flow rate represented by US gal/min which runs
through a valve at 60°F, when the pressure differential 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 differential 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]. Therefore, 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 differential of 0.075 MPa. However, the pressure differential 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 Flow
upstream side 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
38
Series VXD
Flow-rate Characteristics
Note) Use this graph as a guide. In the case of obtaining an accurate flow rate, refer to pages 34 through to 38.
For Air (Orifice diameter: ø10 mm, ø15 mm, ø20 mm, ø25 mm)
Upst
re
am
pre
ssu
r
eo
fv
0.8
alv
e
0.9
P1
The sonic range pressure to generate a
flow rate of 6000 L/min (ANR) is P1 ≈ 0.57
MPa for a ø15 orifice (VXD240/Port
size: 3/8) and P1 ≈ 0.22 MPa for a ø20
orifice (VXD250/Port size: 3/4).
≈
1
.0
0.7
Pa
0.8
0.6
nic
o
bs
Su
0.7
0.6
0.5
Warning
M
Downstream pressure of valve (P2) [MPa]
0.9
0.5
al
itic re
Cr ssu
e
r
p
nic
So
0.4
0.4
0.3
0.3
0.2
0.1
Port size 1/4
Port size 3/8,1/2
Port size 3/8
Port size 1/2
Port size 3/8
Port size 1
How to read the graph
Minimum operating pressure differential origin line
1.0
0.2
0.1
1,000
2,000
1,000
2,000
2,000
4,000
6,000
8,000
2,500
5,000
7,500
10,000
5,000
5,000
3,000
3,000
10,000
10,000
4,000
15,000
15,000
20,000
In the area located left to the
minimum operating pressure
differential origin line in the
flow-rate characteristics table, the
minimum operating pressure is
not generated. Do not use the
product in this area as this may
cause operation failure (valve
opening failure, valve closing
failure) or damage of the valve.
Select valves with suitable size.
ø10
ø10
ø15
ø15
ø20
ø25
Flow rate Q [L/min (ANR)]
39
Series VXD
For Water
How to read the graph
1,000
The pressure differential when water with flow
rate of 100 L/min is applied is as follows.
For a ø15 orifice (VXD214 20 -04),
ΔP ≈ 0.16 MPa,
for a ø20 orifice (VXD250),
ΔP ≈ 0.055 MPa,
for a ø25 orifice (VXD260),
ΔP ≈ 0.032 MPa
500
400
300
Port
Flow rate Q [L/min]
200
Port
40
30
20
10
0.02
40
Port
100
50
size
Port
Port
siz
size
size
Port
e 1/2
3/8
8,1/2
Cv =
ø15
4.5
Cv =
2.4
Cv =
1.9
3/
size
1/4
ø10
size
3/4
Cv =
12.5
Cv =
ø20
9.5
5.5
Cv =
ø15
ø10
1
ø25
0.03 0.032 0.04 0.05 0.06 0.07 0.08 0.09 0.1
0.16
0.2
0.055
Pressure differential ΔP = (P1 − P2) [MPa]
0.3
0.4
0.5
VXD
Specific Product Precautions 1
Series
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
Design
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.
2. Extended periods of continuous energization
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.
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/High temperature oil
2) Flammable oil, Gas
Check the specifications 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) Depending on water quality, a brass body can cause
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. Fluid quality
<Air>
Selection
Warning
1. Minimum operating pressure differential
Be aware that even if the pressure difference is above the
minimum operating pressure differential when the valve is
closed, the pressure difference may fall below the minimum
operating pressure differential when the valve opens,
depending on the capacity of the supply source (pumps,
compressors, etc.,) or the type of pipe restrictions (the
piping is bent continuously due to elbow or tee, or narrow
tube nozzle is installed in the end). If the product is used
below the minimum operating pressure, the operation
becomes unstable, which might cause valve opening or
closing failure, or oscillation, leading to failure due to
insufficient pressure differential. Select an appropriate
valve size with reference to the flow-rate characteristics
and flow-rate characteristics table (on pages 34 through to
40).
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 an air filter close to the valve on the upstream side. A
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 a mist separator on 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.
41
VXD
Specific Product Precautions 2
Series
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
Mounting
Selection
Warning
Warning
<Water>
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 80 to 100 mesh.
The supply water includes materials that create a hard
sediment or sludge such as calcium and magnesium.
Sediment and sludge can cause the valve to not operate
properly. Therefore, install a water softening device, which
removes these materials, and a filter (strainer) directly in front
of the valve.
<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.
4. Ambient environment
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.
5. Countermeasures against static electricity
Take measures to prevent static electricity since some fluids
can cause static electricity.
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. Especially for strict leakage control, such as
with vacuum applications and non-leak specifications, the coil
must be positioned upward.
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.
6. Avoid sources of vibration, or adjust the arm from
the body to the minimum length so that resonance
will not occur.
7. Painting and coating
Warnings or specifications printed or labelled on the product
should not be erased, removed or covered up.
Caution
Piping
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
Power supply
OFF
C
Leakage voltage
R
SOL.
To prevent uncontrolled tube movement, install protective
covers or fasten tubes securely in place.
2. For piping the tube, fix the product securely using
the mounting holes so that the product is not in the
air.
Leakage current
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.
42
Warning
1. During use, deterioration of the tube or damage to
the fittings could cause tubes to come loose from
their fittings and thrash about.
Caution
1. Preparation before piping
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.
Install piping so that it does not apply pulling, pressing, bending
or other forces on the valve body.
2. Avoid connecting ground lines to piping, as this may
cause electric corrosion of the system.
VXD
Specific Product Precautions 3
Series
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
Wiring
Piping
Caution
Caution
3. Always tighten threads with the proper tightening torque.
When attaching fittings to valves, tighten with the proper
tightening torque shown below.
Tightening Torque for Piping
Connection thread Proper tightening torque [N·m]
7 to 9
Rc1/8
Rc1/4
12 to 14
22 to 24
Rc3/8
Rc1/2
28 to 30
Rc3/4
36 to 38
Rc1
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 connecting piping to a product
Avoid mistakes regarding the supply port etc.
5. If the regulator and solenoid valve are connected
directly, chattering may occur as both of them
generate vibration. Do not connect them.
6. If the effective area of piping on the fluid supply
side is restricted, the operation may become
unstable due to differential pressure fluctuation
during valve operation. The piping on the fluid
supply side should match the port size of the valve.
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.)
Straight
portion
Mounting
pitch A
Tube
size
ø1/8"
ø6
ø1/4"
ø8
ø10
ø12
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.)
Operating Environment
Warning
Recommended Piping Conditions
Fig. 1 Recommended piping configuration
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.
1. Do not use in an atmosphere having corrosive
gases, chemicals, sea water, water, water vapor, 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.
Unit: mm
Mounting pitch A
Straight
Nylon tube Soft nylon tube Polyurethane tube portion length
16 or more
25 or more
35 or more
44 or more
30 or more
39 or more
66 or more
84 or more
32 or more
57 or more
70 or more
89 or more
40 or more
52 or more
88 or more
112 or more
50 or more
69 or more
140 or more 110 or more
60 or more
88 or more
168 or more 132 or more
Recommended
Unacceptable
Fig. 2 Binding tubes with bands
43
VXD
Specific Product Precautions 4
Series
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
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.
Electrical Connections
Caution
Grommet
Class B coil: AWG20 Outside insulator diameter of 2.5 mm
Class H coil: AWG18 Outside insulator diameter of 2.1 mm
1) Shut off the fluid supply and release the fluid pressure in
the system.
2) Shut off the power supply.
3) Remove the product.
q
w
2. Low frequency operation
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.
DC
100 VAC
200 VAC
Other AC
∗ There is no polarity.
DIN terminal
Since internal connections are shown below for the DIN
terminal, make connections to the power supply accordingly.
1: +
(−)
3. Storage
2
1
In case of long term storage after use, thoroughly remove all
moisture to prevent rust and deterioration of rubber materials,
etc.
+
Caution
Lead wire colour
w
q
Red
Black
Blue
Blue
Red
Red
Grey
Grey
Rated voltage
3
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.
—
2: −
(+)
4. Exhaust the drainage 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). For details, please consult with SMC.
3. When the pilot type 2 port solenoid valve is closed,
and pressure is applied suddenly due to the
starting of fluid supply source such as pump and
compressor, the valve may open momentarily and
fluid may leak.
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.
44
Terminal no.
DIN terminal
1
+ (−)
2
− (+)
∗ There is no polarity.
sUse a heavy-duty cord with an outside cable diameter of ø6 to 12 mm.
s5SETHETIGHTENINGTORQUESBELOWFOREACHSECTION
Connector
Gasket
Binding head screw with flange
Tightening torque of 0.5 to 0.6 N·m
Washer
Compatible cable Note)
(Outside cable diameter of
ø6 to 12 mm)
Rubber seal
Binding head screw
Tightening torque of 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.
VXD
Specific Product Precautions 5
Series
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
Electrical Connections
Caution
Caution
[DC circuit]
Conduit terminal
In the case of the conduit terminal, make connections according to the marks shown below.
s5SETHETIGHTENINGTORQUESBELOWFOREACHSECTION
s0ROPERLYSEALTHETERMINALCONNECTION'WITHTHESPECIAL
wiring conduit etc.
Grommet, Faston terminal
Grommet, DIN terminal,
Conduit terminal, Conduit
Varistor
1 (+, –)
1 (+, –)
SOL.
SOL.
Terminal cover
2 (–, +)
2
-
1
+
A
2 (–, +)
7ITHOUTELECTRICALOPTION
7ITHSURGEVOLTAGESUPPRESSOR
DIN terminal, Conduit terminal
+ mark
– mark
Round head combination screw
M3 Tightening torque of
0.5 to 0.6 N·m
Varistor
A
Round head
combination screw
M3 Tightening torque of
0.5 to 0.6 N·m
Conduit terminal
1 (+, –)
G1/2
Tightening
torque of
0.5 to 0.6 N·m
View A-A
(Internal connection diagram)
SOL.
2 (–, +)
Light
7ITHLIGHTSURGEVOLTAGESUPPRESSOR
Conduit
7HENUSEDASAN)0EQUIVALENTUSESEALTOINSTALLTHEWIRING
conduit. Also, use the tightening torque below for the conduit.
Class B coil: AWG20 Outside insulator diameter of 2.5 mm
Class H coil: AWG18 Outside insulator diameter of 2.1 mm
[AC circuit]
∗&OR!#THESTANDARDPRODUCTISEQUIPPEDWITHSURGEVOLTAGESUPPRESSOR
Grommet, DIN terminal,
Conduit terminal, Conduit
Varistor
Rectifier
element
Rectifier
element
Varistor
1
Lead wire
DIN terminal, Conduit terminal
1
q
SOL.
2
SOL.
2
Light
w
7ITHOUTELECTRICALOPTION
7ITHLIGHTSURGEVOLTAGESUPPRESSOR
Seal
Wiring conduit
(Connection G1/2 Tightening torque of 0.5 to 0.6 N·m)
One-touch Fitting
Rated voltage
DC
100 VAC
200 VAC
Other AC
Lead wire colour
w
q
Red
Black
Blue
Blue
Red
Red
'REY
'REY
Caution
For information on handling one-touch fittings (KQ2
series) and appropriate tubing, refer to SMC website,
http://www.smc.eu
∗4HEREISNOPOLARITY
4HEREISNOPOLARITYEXCEPTFORTHEPOWERSAVINGTYPE
$ESCRIPTION
Seal
0ARTNO
VCW20-15-6
.OTE0LEASEORDERSEPARATELY
45
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, wichever is first.∗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.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 QX printing QX 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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