Datasheet

4.2-18
VNB
Construction
Principles of Operation (The vacuum pilot style is excluded)
Replacement Parts
How to Order Pilot Solenoid Valve
Valve size 1, 2, 3, 4
Valve size 5, 6, 7
FPM
EPR
NBR VN1-A3BA
VN1-A3BB
VN1-A3BC
VN1-4BA
VN1-4BB
VN1-4BC
FPM
EPR
NBR
Plate
assembly
A
F
A
F
SF4--23-Q
VNB1
-6A, 8A, 10A
VO301-00-Q
VN2-A3BA
VN2-A3BB
VN2-A3BC
VN2-4BA
VN2-4BB
VN2-4BC
VNB2
-10A, 15A
VN3-A3BA
VN3-A3BB
VN3-A3BC
VN3-4BA
VN3-4BB
VN3-4BC
VNB3
-20A
VN4-A3BA
VN4-A3BB
VN4-A3BC
VN4-4BA
VN4-4BB
VN4-4BC
VNB4
-25A
VN5-A3BA
VN5-A3BB
VN5-A3BC
VN5-A4BA
VN5-A4BB
VN5-A4BC
VNB5
-32A
VN5-A3BA
VN5-A3BB
VN5-A3BC
VN5-A4BA-3
VN5-A4BB-3
VN5-A4BC-3
VNB5
-32A
VN6-A3BA
VN6-A3BB
VN6-A3BC
VN6-A4BA
VN6-A4BB
VN6-A4BC
VNB6
-40A
VN6-A3BA
VN6-A3BB
VN6-A3BC
VN6-A4BA-3
VN6-A4BB-3
VN6-A4BC-3
VNB6
-40A
VN7-A3BA
VN7-A3BB
VN7-A3BC
VN7-A4BA
VN7-A4BB
VN7-A4BC
VNB7
-50A
VN7-A3BA
VN7-A3BB
VN7-A3BC
VN7-A4BA-3
VN7-A4BB-3
VN7-A4BC-3
VNB7
-50A
Valve
element
Pilot solenoid valve
Part No.
Valve
material
Valve
material
e
(1)
r
(1)
u
Description
No.
4
4

4 
L: Aluminum, S: Stainless steel
Note 1) In the casesy of body options "S" and "L", the materials of the parts Nos. e and r are as follows: (Example): VN1-A3BA
Note 2) 32 to 50 come in valve etement assembly
(2)
SF4 1 DZ 23
100V AC 50/60Hz
200V AC 50/60Hz
110V AC 50/60Hz
220V AC 50/60Hz
24V DC
12V DC
240V AC 50/60Hz
Other
D
DZ
Manual override/classification
—
Non-locking push style
Electrical entry and indicator light and surge
voltage suppressor
DIN connector
DIN connector with indicator light and surge suppressor
Coil rated voltage
1
2
3
∗
4
∗
5
6
∗
7
∗
9
∗
∗ Option
VO301 00
100V AC 50/60Hz
200V AC 50/60Hz
110V AC 50/60Hz
220V AC 50/60Hz
24V DC
12V DC
240V AC 50/60Hz
Other
—
V
Standard
Vacuum pilot
D
DL
∗
Surge voltage suppressor
—
S
None
With surge voltage
suppressor
(Except for DL)
Electrical entry
DIN connector
DIN connector with indicator light
∗ Option
Note) The pilot solenoid valve parts
No. of the electrical entry "D" is as
follows:
VO301-00D-X302
1
2
3
∗
4
∗
5
6
∗
7
∗
9
∗
∗ Option
Indicator light and
surge voltage
suppressor
Coil rated voltage
Coil rated voltage
Body option
Q
Q
Protective class
class I (Mark: )......... DIN terminal type
Contact SMC for other voltages (9)
Order
Made
However all brackets of valve element of VNB 1 to 4 are made of stainless steel. (No need to add options "S" and "L".)
VNB0 , 1 1 (N.C.)
When the pilot solenoid valve u is not energized (or when air is exhausted from
the P
1 port of the air operated type), the valve element r linked to the piston
t is closed by the return spring y.
• When valve element opens
When the pilot solenoid valve is energized (or when pressurized air enters
through the P
1 port of the air operated style), the pilot air that has entered under
the piston moves upward to open the valve element.
• When valve element closes
When the power to the pilot solenoid valve is turned off (or when fluid is
exhausted from the P
1 port of the air operated style), the pilot air under the
piston is exhausted, and the return spring closes the valve element.
VNB 02, 12 (N.O.)
In contrast wth the N.C., when the power to the pilot solenoid valve is turned off
(or when air is exhausted from the P2 port of the air operated style), the valve is
held open by the return spring. When the pilot solenoid valve is energized (or
when pressurized air enters through the P
2 port of the air operated style), the
valve element closes.
VNB  03 (C.O.)
The valve element for the C.O. type, which has no return spring, is in an arbitary
position when air is exhausted through the P1 and P2 ports. When pressurized
air enters the P1 port (exhaust from the P2 port), the valve element opens, and it
closes when pressurized air enters the P2 port (exhaust from the P1 port).
1
4
1
4
Component Parts
No.
q
w
e
r
t
y
u
Description
Body
Cover assembly
Plate assembly
Valve element
Piston assembly
Return spring
Pilot solenoid valve
Note) Parts e and r are for selection of valve composition.
∗ The body option "S" is stainless steel, and "L" is aluminum.
Brass
∗
Aluminium alloy
Material
Bronze
∗
(NBR, FPM, EPR)
Aluminium alloy
Piano wire
—
—
—
—
Note
Clear coated
Platinum silver painted
Valve material (NBR, FPM, EPR)
Stainless steel or brass