Process Valve

Process Valve
Process Valve
VNA Series
2 Port Valve For Compressed Air and Air-hydro Circuit Control
Exclusively for air pressure system and air-hydro circuit control
Universal 2 Port Valve
[Option]
Cylinder actuation by external pilot air
The balance poppet permits
normal and reverse flow.
Operation from 0 MPa
is possible.
Wide variations
N.C., N.O., C.O., types are
available. Threaded type from 6A to 50A
is standardized.
Compressed Air Air pressure circuit: Application examples
Actuator stop valve
Intermediate stop, inching
VNA
Actuator skip valve
Terminal deceleration,
intermediate deceleration,
accelerative start
VNA
Actuator exhaust valve
High speed operation,
high speed exhaust
VNA
VNA
Air motor driving
valve
VNA
Air blow valve
Line stop valve
VNA
Residual line pressure
exhaust valve
VNA
VNA
VNA
Air-hydro Air pressure circuit: Application examples
Air-hydro circuit: Application example
Basic circuit
VNA
Conditions
No load
Piping length
Bore size (mm)
VNA111A,
CCVSO2
3/8B (9 mm)
VNA211A,
CCVLO2
1/2B (13 mm)
VNA311A
3/4B (19 mm)
VNA411A
1B (25 mm)
VNH
VCC
VNA
VNA
2
VNA
1
VNA
SGC
VND
2
Refer to Air-hydro Unit
pages in “Best Pneumatics No. 2-1 (CC series)” for further information on air-hydro.
VNA
VNB
VNC
2
1
This series can supplement the capacity of current air-hydro valve units. They
are suited to operate large bore cylinders as well as to simultaneously operate multiple cylinders and suspend
their operation. Thus they can be used
in the same way as the current airhydro units.
Piping
diameter
1
1m
VNA
SGH
VNA
1
Load
Combination of 2 or more valves
of VNA series provides a skip
valve function. Connect the skip
valve to the A port side of a stop
valve.
2
ISO VG32
Skip valve function
1
0.49 MPa
Hydraulic fluid
Caution
Connect a speed controller
(AS series etc.) to A port of
VNA11 (in order to protect
the speed control valve from
surges when cylinder operation is suspended, thus improving stopping accuracy).
VNA
Supply pressure
Caution
When speed controller is
mounted
2
Cylinder speed (mm/s)
Operation Capacity When
Used in Air-hydro Units
VNA
1
TQ
2
559
Process Valve: 2 Port Valve
For Compressed Air and Air-hydro Circuit Control
VNA Series
[Option]
Note) CE-compliant: For D or
DZ only
How to Order
Seal material
A
B
C
Thread type
Nil
F
N
T
NBR seals
FKM seals
EPR seals
Refer to “Table (1)” for availability.
Bracket (Valve size: 1/2/3/4.)
Rc
G
NPT
NPTF
Nil
B Note)
Air operated
VNA 2 0 1 A
15A
External pilot solenoid
VNA 2 1 1 A
15A
None
With bracket
Note) Only valve sizes 1, 2, 3 and 4.
Shipped after assembled at our factory.
Bracket part no.
Valve size 1: VN1-A16 (with thread)
Valve sizes 2 to 4: VN-16
2 to 4
1
T
CE-compliant
Nil
Q
—
CE-compliant
Note) CE-compliant: For D or DZ only
Valve size
Symbol
Orifice dia.
(mm)
1
ø10
2
Port size
Valve type
Symbol
1
N.C.
2
N.O.
Port
3 Note) Symbol size
Rc
C.O.
6A
8A
10A
10A
15A
20A
25A
32A
40A
50A
ø15
3
ø20
4
ø25
5
ø32
6
ø40
7
ø50
Note) Air operated only
18
14
38
38
12
34
1
11 4
11 2
2
Manual override
Rated voltage
1
2
3 Note 2)
4 Note 2)
5
6 Note 2)
7 Note 2)
100 VAC 50/60 Hz
200 VAC 50/60 Hz
110 VAC 50/60 Hz
220 VAC 50/60 Hz
24 VDC
12 VDC
240 VAC 50/60 Hz
Note 1) CE-compliant: For D or
DZ only
Note 2) Semi-standard
Note 3) For other rated voltages,
please consult with SMC.
Nil: Non-locking push type
A: Non-locking push type A
(projecting)
B: Slotted locking type B
(tool required)
Note)
Nil: Non-locking
push type
Note)
Valve
size
1 to 4
Valve
size
5 to 7
Note) Semi-standard
Electrical entry/With light/surge voltage suppressor
Symbol
Table (1) Applicable Fluids
Model
VNAA
VNAB
VNAC
(Valve material: NBR seal) (Valve material: FKM seal) (Valve material: EPR seal)
Fluid
Air (Standard, Dry)
Argon
Carbon dioxide (CO2) (Less than 0.7 MPa)
Helium
Carbon dioxide (CO2)
Nitrogen gas (N2)
(0.7 MPa or more)
Turbine oil, Kinematic viscosity Turbine oil, Kinematic viscosity
40
to
100
mm
/s
Hydraulic fluid
Hydraulic fluid 40 to 100 mm /s
2
2
Caution
This product cannot be used for water application.
560
G
GS
E
EZ
T
TZ
D
DZ
Valve Valve
size
size
1 to 4 5 to 7
Grommet


Grommet with surge voltage suppressor


Grommet terminal


Grommet terminal with light/surge voltage suppressor
Conduit terminal


Conduit terminal with light/surge voltage suppressor
DIN terminal


DIN terminal with light/surge voltage suppressor


Electrical entry
CE-compliant
Symbol
Electrical entry
D
DZ
DIN terminal
DIN terminal with light/surge voltage supressor
Valve Valve
size
size
1 to 4 5 to 7




Process Valve: 2 Port Valve
For Compressed Air and Air-hydro Circuit Control
VNA Series
Model
Orifice
diameter
ø (mm)
Port size
Rc
Model
VNA1-6A
VNA1-8A
VNA1-10A
VNA2-10A
VNA2-15A
VNA3-20A
1 8
1 4
10
3 8
15
1 2
3 4
20
Flow rate characteristics
Measured by air
Measured by water Note)
Conversion
C
b
Cv
Kv
3
[dm /(bar·sec)]
Cv
1.0
0.9
3.5
0.35 0.88
1.7
1.5
5.9
0.24 1.5
2.1
1.8
7.9
0.16 1.9
4.5
3.9
16
0.35 3.8
5.4
4.6
23
0.25 4.8
8.7
7.5
34
0.16 7.5
Weight (kg)
Air operated
External pilot
solenoid
0.1
0.2
0.3
0.4
0.5
0.6
Note) This product cannot be used for water application.
Model
Port size
Rc
Orifice
diameter
ø (mm)
VNA4-25A
VNA5-32A
VNA6-40A
VNA7-50A
1
11 4
11 2
2
25
32
40
50
Flow rate characteristics
Measured by air
Measured by water
Conversion
Effective area
Kv
2
Cv
(mm )
220
10.4
12
320
15.6
18
500
24.2
28
770
37.2
43
Weight (kg)
Air operated
External pilot
solenoid
0.8
1.3
2.1
3.1
0.9
1.4
2.2
3.2
Specifications
Fluid (Main piping)
Refer to “Table (1)” on page 560.
VNA A
–5 to 60°C Note 1)
VNA B
–5 to 99°C Note 1)
(Air operated type only)
 C
Ambient temperature
–5 to 50°C Note 1) (Air operated type: 60°C)
Proof pressure
1.5 MPa
Operating pressure range
0 to 1 MPa
0.2 to 0.7 MPa
Pressure range
External pilot air
Lubrication Not required (Use turbine oil Class 1 ISO VG32, if lubricated. Note 2))
Temperature
–5 to 50°C Note 1) (Air operated type: 60°C)
Mounting orientation
Unrestricted Note 3)
Fluid
temperature
Note 1) No freezing
Note 2) Lubrication is not allowed for use with EPR seal material.
Note 3) For external pilot solenoid, it is recommended that the pilot solenoid valve be oriented
either vertically upward or horizontally.
External pilot
solenoid
Air operated
Pilot Solenoid Valve Specifications
Port size
6A to 25A
32A to 50A
VO307-1
SF4--23
VO307-DDZ -Q
SF4-DDZ -23-Q
Grommet, Grommet terminal
Electrical entry
Conduit terminal
Grommet, DIN terminal
DIN terminal
AC (50/60 Hz)
100 V, 200 V, Other voltage (Semi-standard)
Coil rated
voltage (V)
DC
24 V, Other voltage (Semi-standard)
Allowable voltage fluctuation
–15% to +10% of rated voltage
50°C or less
35°C or less
Temperature rise
(When rated voltage is applied.) (When rated voltage is applied.)
Inrush
5.6 VA (50 Hz), 5.0 VA (60 Hz) 12.7 VA (50 Hz), 10.7 VA (60 Hz)
Apparent
AC
power
Holding 3.4 VA (50 Hz), 2.3 VA (60 Hz) 7.6 VA (50 Hz), 5.4 VA (60 Hz)
Power
1.8 W (without light),
4 W (without light),
DC
2 W (with light)
4.2 W (with light)
consumption
Non-locking push type
Manual override
Non-locking push type
Other (Semi-standard)
Pilot solenoid valve
Symbol
Type
Valve
type
N.C.
N.O.
C.O.
Normally closed Normally open Double acting
VNA01 VNA02 VNA03
12
(P1)
Air operated
1
2
1
10
(P2)
12
(P1)
2
1
10
(P2)
VNA11
12
(P1)
12
External pilot (P1)
solenoid
1
VNA12
2
1
2
VNA
VNB
SGC
SGH
VNC
VNH
VND
Note) For “How to Order” pilot solenoid valves, refer to page 565.
2
VCC
TQ
561
A
VNA Series
Construction
N.C.
N.O.
Port 12(P1)
Port 10(P2)
Port 2(B)
∗ C.O. type does not have a return spring u.
Working Principle
Port 1(A)
VNA01, 11 (N.C.)
When the pilot solenoid valve i is not energized (or when air is exhausted from the port 12(P1) of the air operated type), the valve element r linked to the piston t is closed by the return spring u.
 When valve element opens
When the pilot solenoid valve is energized (or when pressurized air
enters through the port 12(P1) of the air operated type), the pilot air
that has entered under the piston moves upward to open the valve
element.
 When valve element closes
Component Parts
No.
1
2
3 Note)
Note)
4
5
6
7
8
Description
Body
Cover assembly
Plate assembly
Valve element
Piston assembly
Travel spring
Return spring
Pilot solenoid valve
Material
Aluminum alloy
Aluminum alloy
Aluminum alloy
Aluminum alloy
Aluminum alloy
Stainless steel
Piano wire
—
Note
Platinum silver painted
Platinum silver painted
Seal material (NBR, FKM, EPR)
Seal material (NBR, FKM, EPR)
—
—
—
—
Note) Parts e and r are for selection of valve composition.
Replacement Parts
Description
No.
Seal
material
3
Plate assembly
4
(Valve disc assembly
for 25A-50A)
8
Pilot solenoid valve
562
Valve disc
Seal
material
NBR
FKM
EPR
NBR
FKM
EPR
When the power to the pilot solenoid valve is turned off (or when
fluid is exhausted from the port 12(P1) of the air operated type), the
pilot air under the piston is exhausted, and the return spring closes
the valve element.
VNA02, 12 (N.C.)
In contrast with the N.C., when the power to the pilot solenoid valve is
turned off (or when air is exhausted from the port 10(P2) of the air operated type), the valve is held open by the return spring. When the pilot solenoid valve is energized (or when pressurized air enters
through the port 10(P2) of the air operated type), the valve element
closes.
VNA03 (C.O.)
The valve element of the C.O. type, which has no return spring, is in
an arbitrary position when air is exhausted through the ports 12(P1)
and 10(P2). When pressurized air enters the port 12(P1) (exhaust
from the port 10(P2)), the valve element opens, and it closes when
pressurized air enters the port 10(P2) (exhaust from the port 12(P1)).
Part no.
VNA1A
VNA2
VNA3
VNA4
-6A, 8A, 10A
-10A, 15A
-20A
-25A
VN1-A3AA
VN2-A3AA
VN3-A3AA
VN4-A3AA
VN1-A3AB
VN2-A3AB
VN3-A3AB
VN4-A3AB
VN1-A3AC
VN2-A3AC
VN3-A3AC
VN4-A3AC
VN1-4AA
VN2-4AA
VN3-4AA
VN4-A4AA
VN1-4AB
VN2-4AB
VN3-4AB
VN4-A4AB
VN1-4AC
VN2-4AC
VN3-4AC
VN4-A4AC
SF4--23 (Refer to page 565 for details.)
VNA5
VNA6
VNA7
-32A
-40A
-50A
VN5-A3AA
VN6-A3AA
VN7-A3AA
VN5-A3AB
VN6-A3AB
VN7-A3AB
VN5-A3AC
VN6-A3AC
VN7-A3AC
VN5-A4AA
VN6-A4AA
VN7-A4AA
VN5-A4AB
VN6-A4AB
VN7-A4AB
VN5-A4AC
VN6-A4AC
VN7-A4AC
VO307-1 (Refer to page 565 for details.)
Process Valve: 2 Port Valve
For Compressed Air and Air-hydro Circuit Control
VNA Series
Port size: 6A, 8A, 10A
Applicable cable O.D.
ø6 to ø8 (D.T)
Pilot port 12 (P1)
2 x Rc 1/8
(Back side 10 (P2))
127 (Conduit terminal: T DIN terminal: D)
106.5 (Grommet terminal: E)
106.7 (Grommet: G)
63 (Air operated)
Pg.9
Manual override
(Non-locking push type)
Main port 1(A) (Back side 2(B))
Port size: refer to table below
65 (Grommet terminal: E)∗
70 (Conduit terminal: T)∗
74.5 (DIN terminal: D)∗
2 x ø4.5
Model
VNA1-6A
VNA1-8A
VNA1-10A
Bracket
2 x M4 x 0.7 depth 7
Main port
1(A), 2(B)
18
14
38
∗ In the case of “EZ” or “TZ”, the length is longer
by 10 mm. For “DZ”, the length is longer by 17
mm.
VNA
VNB
SGC
SGH
VNC
VNH
VND
VCC
TQ
563
A
VNA Series
Port size: 10A, 15A, 20A, 25A
4 x øP
J (Grommet: G)
Pilot port 12 (P1)
2 x Rc 1/8
(Back side 10 (P2))
Pg.9
F (Air operated)
Manual override
(Non-locking push type)
K (Grommet terminal: E)
L (Conduit terminal: T DIN terminal: D)
Applicable cable O.D.
ø6 to ø8 (D.T)
Main port
(Back side 2 (B))
Port size: refer to
table below
G (Grommet terminal: E)∗
H (Conduit terminal: T)∗
∗ In the case of “EZ” or “TZ”, the
length is longer by 10 mm.
For “DZ”, the length is longer by
17 mm.
I (DIN terminal: D)∗
Model
Main port
1(A), 2(B)
A
B
C
D
38
12
63
42
29
14
80
90
50
60
35
40
VNA2-10A
VNA2-15A
VNA3-20A
VNA4-25A
34
1
G
H
M
N
R
S
T
U
72.5 80.5
E
F
75
80
84.5 124 125.5 144.5 52
I
J
K
L
26
4.5 24.3 2.3
25
34
55
17.5 84
92
20 100 108
84
90
89
95
93.5 135.5 137 156
99.5 151.5 153 172
31
36
5.5 28.3 2.3
6.5 33.3 2.3
30
35
43
49
60.5
73
62
72
P
Q
Port size: 32A, 40A, 50A
Applicable cable O.D.
ø6 to ø8 (D, DL)
Pg9
P2
E
F
Manual override
(Non-locking push type)
H (Grommet: G)
G (Air operated)
P1
I (DIN terminal: D, DZ)
Pilot port
12 (P1), 10 (P2)
Port size: refer to table below
B
D
A
C
B
Model
VNA5-32A
VNA6-40A
VNA7-50A
A
564
J
A
Main port 1 (A) (Back side 2 (B))
Port size: refer to table below
Main port Pilot port
1(A), 2(B) 12(P1), 10(P2)
18
11 4
14
11 2
14
2
A
B
C
D
E
F
G
105
120
140
77
96
113
53
60
74
26.5
30
37
120.5
137
160
20
24
24
129.5
147
170
H
I
170.1 211.5
187.6 229
210.6 252
J
55
63
74
Process Valve: 2 Port Valve
For Compressed Air and Air-hydro Circuit Control
How to Order Pilot Solenoid Valves
Valve size 1/2/3/4
SF4
5 D
23
Valve size 5/6/7
Q
VO307
CE-compliant
Coil rated voltage
Nil
Q
1
100 VAC 50/60 Hz
2
200 VAC 50/60 Hz
Note
1)
3
110 VAC 50/60 Hz
4 Note 1) 220 VAC 50/60 Hz
5
24 VDC
6 Note 1) 12 VDC
Note
1)
7
240 VAC 50/60 Hz
Note 1) Semi-standard
Note 2) For other rated
voltages, please
consult with SMC.
—
CE-compliant
Note) Electrical entry:
D or DZ only
Manual override
Nil
A∗
B∗
Non-locking push type
Non-locking push
type A (projecting)
Slotted locking
type B (tool required)
∗ Semi-standard
Electrical entry/
With light/surge voltage suppressor CE-compliant
G
GS
E
EZ
T
TZ
D
DZ
VNA Series
Grommet
Grommet with surge voltage suppressor
Grommet terminal
Grommet terminal
with light/surge voltage suppressor
Conduit terminal
Conduit terminal
with light/surge voltage suppressor
DIN terminal
DIN terminal
with light/surge voltage suppressor
—
—
—
5 D1
CE-compliant
Coil rated voltage
1
2
3 Note 1)
4 Note 1)
5
6 Note 1)
7 Note 1)
100 VAC 50/60 Hz
200 VAC 50/60 Hz
110 VAC 50/60 Hz
220 VAC 50/60 Hz
24 VDC
12 VDC
240 VAC 50/60 Hz
Note 1) Semi-standard
Note 2) For other rated voltages, please consult
with SMC.
Q
Nil
Q
—
CE-compliant
Note) Electrical entry:
D or DZ only
Electrical entry
CEcompliant
G
Grommet
Grommet with surge
GS
voltage suppressor
DIN terminal
D
DIN terminal with light/
DZ
surge voltage suppressor
Accessory
Function plate for VO307 (D seal, with screw): DXT152-14-5A
—
—
—


VNA
VNB
SGC
SGH
VNC
VNH
VND
VCC
TQ
565
A
VNA Series
Specific Product Precautions
Be sure to read this before handling the products.
Refer to back page 50 for Safety Instructions and pages 17 to 19 for 2 Port Solenoid
Valve for Fluid Control Precautions.
Design
Piping
Warning
Warning
Extended periods of continuous energization
If a valve is continuously energized for long periods, heat generation of the coil may result in reduced performance and shorter service life. This may also have an adverse effect on the peripheral
equipment in proximity. Should a valve be continuously energized
for long periods, or its daily energized state exceeds its non energized state, please use an energy saving type AC, energizing for
long periods of time continuously, select the air-operated valve
and use the continuous duty type of the VT307 for a pilot valve.
Mounting
When high temperature fluids are used, use fittings and tubing
with heat resistant features. (Self-align fittings, PTFE tubing,
Copper tubing, etc.)
Mounting Direction of Pilot Solenoid Valve
Warning
With external pilot solenoids, the pilot solenoid valves are not
splash proof specifications, and so care must be taken not to
get fluid on oneself such as when performing maintenance.
Caution
Warning
1. 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.
Direction of mounting
When replacing a valve, if an external pilot solenoid valve is
mounted in the wrong direction, it may malfunction or leak air.
2. 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.
3. Avoid sources of vibration, or adjust the arm from
the body to the minimum length so that resonance
will not occur.
Piping
Caution
1. Applied voltage
When electric power is connected to a solenoid valve, be
careful to apply the proper voltage. Improper voltage may
cause malfunction or coil damage.
2. Confirm the connections.
After completing the wiring, confirm that the connections are
correct.
Warning
1. Piping
Surge pressure is generated between the cylinder and the VNA
during intermediate stoppage. To directly thread in the cylinder, use
durable fittings (Stainless steel square nipples etc,) instead of ductile iron fittings (JIS B 2301) or steel pipe fittings (JIS B 2302).
When VNA is installed away from the cylinder, use a high-pressure
rubber hose (JIS B 6349) instead of steel pipe, when possible.
2. Air bleeding
The VNA series valves have no air bleeding port. Bleed air comes
from the middle piping. Bleeding by a vacuum pump is more effective.
3. Hydraulic fluid
Turbine oil, Grade 1 ISO VG32, with petroleum hydraulic fluid
is recommended.
4. Speed control valve
The combination shown in the following table is recommended
for best performance of the VNA series. (Piping: JIS K 6349
high pressure hose)
External Pilot
Caution
Pilot port piping
12(P1) and 10(P2) piping should be as follows according to the model.
Port
VNA01
VNA02
VNA03
VNA1 12 
12
(P1)
External pilot
Bleed port
External pilot (∗)
External pilot
10
(P2)
Bleed port
External pilot
External pilot (∗)
Pilot exhaust
(∗) If the pilot air is not supplied, the valve position will not be held. Pressurize
Port 12 (P1) or Port 10 (P2) when using the product.
Installing a silencer to the exhaust port and the bleed port is
recommended for noise reduction and for dust entry prevention.
566
Use with Air-hydro Unit
Combination between the VNA series and Speed controller (AS series)
VNA
AS
Piping (I.D.)
10A
VNA111
AS420-03
3/8B (ø9.5)
15A
VNA211
AS420-04
1/2B (ø12.7)
20A
VNA311
AS500-06
3/4B (ø19.1)
25A
VNA411
AS600-10
1B (ø25.4)
32A
VNA511
AS800-12
1 1/4B (ø31.8)
40A
VNA611
AS900-14
1 1/2B (ø38.1)
50A
VNA711
AS900-20
2B (ø50.8)
For details about speed control valve (AS series), refer to Best Pneumatics No. 7.
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