VCS Series - 2 Port Solenoid Valve for Steam

VCS Series - 2 Port Solenoid Valve for Steam
NS70-19A
®
Series VC
Series VCS
Direct Operated 2 Port Solenoid Valve for Steam
IP65 Enclosure
Long Life
Cv Range From 0.16 to 2.1
Multiple Wiring Options
Multipurpose Valve for Steam
Direct Operated 2 Port Solenoid Valve for Steam
Series VCS
Improved durability
(nearly twice the life of the previous series)
The internal resistance of moving parts has been reduced
through the use of a unique magnetic material.
Service life, durability and corrosion resistance have been
increased.
High flow rate:
Cv factor 0.16 to 2.1
Smaller size:
Single valve volume reduced by 15% (Class 3)
Manifold length reduced by 18% (Class 3: 5 stations) (SMC comparison)
Clip type
Quick change coils
Clip design makes coil
replacement easy
Flame resistance
Conforms to UL94 V-0
Coil size and weight reduced
New compact coil reduces the overall
size and weight of the valve
SMC comparison
(Class 3)
Volume – 15%
Weight – 20%
Threaded assembly
Simplifies maintenance
Improved corrosion resistance
Improved corrosion resistance
Special material introduced
Bottom mounting threads
Enclosure: Dust-tight and splash proof
(equivalent to IP65)
Mounting bracket also available
Wiring specifications (Class H coil)
Wiring variations
3 compact sizes available
Grommet
Conduit
®
I
Conduit terminal
VCS2
VCS3
VCS4
Class 2
Class 3
Class 4
Direct Operated
2 Port Solenoid
Valve for Steam
Series VCS
Series VC
How to Order Valves (Single Type)
VC S 2 1
1 G
2
02
For steam
Option
When no symbol is shown for
"Material and insulation type"
• Body material: Brass
• Seal material: PTFE
• Coil insulation: Class H
Nil
F
Material and insulation type
Symbol Body material Seal material Coil insulation
Nil
PTFE
Brass
D
FKM
Class H
R
PTFE
Stainless
steel
N
FKM
Series
2
3
4
None
Foot type bracket
Class 2
Class 3
Class 4
Valve type
N.C.
Thread type
OUT
(2)
Rc
NPT
G
Nil
N
F
1
(1)
IN
Port size
Voltage
1
2
3
4
36
Port size
1/8 (6A)
1/4 (8A)
3/8 (10A)
1/2 (15A)
3/4 (20A)
Symbol
100VAC
200VAC
110VAC
220VAC
230VAC
01
02
03
04
06
∗ Consult SMC regarding
other voltages.
Class 3
—
—
Class 2
—
—
—
Class 4
—
Orifice size
Electrical entry
G–Grommet
C–Conduit
Symbol Orifice diameter
ø2mm
2
ø3mm
3
ø4mm
4
ø5mm
5
ø7mm
7
ø10mm
10
Class 2
—
—
Class 3
—
Class 4
—
∗ Refer to the table below for orifice and port size combinations.
Orifice and port size combinations
T -With conduit terminal
TL-With conduit terminal/light
Orifice size
Class
Port size
Note 1)
ø2 ø3 ø4 ø5 ø7 ø10
2
3
1/8 ( 6A)
— —
1/4 ( 8A)
— —
1/4 ( 8A)
—
—
3/8 (10A)
—
1/2 (15A)
— — — — — — —
— 1/4 ( 8A)
4
3/8 (10A)
1/2 (15A)
3/4 (20A)
— — — — —
— — — — —
Note 1) ø10 is available with seal material FKM only.
®
1
Series VCS
Direct Operated 2 Port for Steam
Standard Specifications
Valve construction
Direct operated poppet
Fluid
Steam (184°C or less)
Valve specifications
Withstand pressure MPa (psi)
5.0 (725)
Body material
Brass, Stainless steel
Seal material
PTFE (FKM)
Ambient temperature
–20 to 100ºC (-4 to 212ºF)
Fluid temperature
184ºC (363ºF) or less (PTFE), 120ºC (248ºF) or less (FKM) Note 1)
Enclosure
Dust proof, Splash proof (equivalent to IP65)
Environment
Location without corrosive or explosive gases
Valve leakage cm³/ min
300 (PTFE), 0.1 (FKM) with air
Mounting orientation
Unrestricted
Vibration/Impact resistance m/s² Note 2)
Coil
Specifications
Rated voltage
30/150 or less
100VAC, 110VAC, 200VAC, 220VAC, 230VAC (50/60Hz)
±10% of rated voltage
Allowable voltage fluctuation
Coil insulation type
Class H
Power consumption W 50/60Hz
Apparent power VA
50/60Hz
VCS2: 4.9/4.1, VCS3: 7.7/6.6, VCS4: 10.5/9.3
Inrush
VCS2: 22/19, VCS3: 36/30, VCS4: 45/37
Holding
VCS2: 10/8, VCS3: 15/13, VCS4: 19/16
Note 1) In case of low pressure steam at a temperature of 120°C or less, use FKM for the seal material.
Note 2) Vibration resistance …Conditions when tested with one sweep of 10 to 300Hz in the axial direction and at a right
angle to the armature, in both energized and deenergized states
Impact resistance …... Conditions when tested with a drop tester in the axial direction and at a right angle to the
armature, one time each in energized and deenergized states
Characteristic Specifications
Note 1)
Note 1)
Model Class Port size
VCS2
VCS3
VCS4
2
3
4
1/8 (6A)
1/4 (8A)
1/4 (8A)
3/8 (10A)
1/2 (15A)
1/4 (8A)
3/8 (10A)
1/2 (15A)
3/4 (20A)
Orifice
size
mm
Maximum
Effective area
operating
mm²
pressure
(Cv factor)
differential MPa (psi)
Max. operating
pressure
MPa (psi)
Weight
kg (lb)
1.0 (10)
1/8: 0.21 (0.46)
1/4: 0.24 (0.53)
ø2
1.0 (145)
2.8 (0.16)
ø3
0.8 (116)
5.9 (0.33)
ø4
0.5 (72)
9.2 (0.51)
ø5
0.3 (43)
11.7 (0.65)
ø3
1.0 (145)
6.3 (0.35)
ø4
0.8 (116)
9.7 (0.54)
ø5
0.5 (72)
14.4 (0.8)
1.0 (10)
ø7
0.2 (29)
24.8 (1.38)
145 (1450)
ø10
0.1 (14)
37.8 (2.10)
ø3
1.0 (145)
6.3 (0.35)
ø4
1.0 (145)
10.8 (0.60)
ø5
0.7 (101)
15.3 (0.85)
1.0 (10)
ø7
0.3 (43)
24.8 (1.38)
145 (1450)
ø10
0.12 (17)
37.8 (2.10)
145 (1450)
Note 1) Refer to model selection on page 7 regarding port size and orifice size combinations.
®
2
1/4: 0.42 (0.93)
3/8: 0.40 (0.88)
1/2: 0.49 (1.08)
1/4: 0.58 (1.28)
3/8: 0.55 (1.21)
1/2: 0.62 (1.37)
3/4: 0.78 (1.72)
Series VCS
Direct Operated 2 Port for Steam
Construction
Parts list
1
2
3
4
5
6
7
Material
Description
No.
Standard
Stainless steel
Clip
Stainless steel, Cu
Tube assembly
Class H
Coil assembly
Armature assembly
Stainless steel, PTFE (FKM)
Seal
PTFE (FKM)
Return spring
Stainless steel
Brass
Body
Dimensions (mm)/Bracket
1in = 25.4mm
A
J
4-øG
C
L
E
D
B
1.5
4-øH
Valve mounting hole
F
Bracket mounting dimensions
(mm)
Valve model
Port size
Bracket part no.
A
B
C
D
E
F
G
H
J
L
VCS21
1/8, 1/4
VCS20-12-01
34
40
25
30
12.8
12.8
5
4.5
6
13
1/4, 3/8
VCS30-12-02
42
52
30
40
19
19
6
5.5
7
19
1/2
VCS30-12-04
48
56
36
44
23
23
6
5.5
7
23
1/4, 3/8
VCS40-12-02
42
52
30
40
23
23
6
5.5
7
19
1/2
VCS30-12-04
48
56
36
44
23
23
6
5.5
7
23
3/4
VCS40-12-06
56
65
44
53
28.2
28.2
6
5.5
7
26
VCS31
VCS41
∗ Bracket material: Stainless steel
®
3
Series VCS
Direct Operated 2 Port for Steam
Dimensions (mm)
1in = 25.4mm
Conduit: C
Approx. 300
Q
F
Approx. 280
D
F
G (PF) 1/2
E
E
A
H
Q
R
R
C
D
C
Grommet: G
2-P
Port size
B
A
H
B
2-P
Port size
2-M
L
L
2-M
Thread depth N
K
K
Conduit terminal: T
(Q)
F
R
C
U
25
34
E
G (PF) 1/2
B
A
H
D
(S)
2-P
Port size
L
2-M
K
N.C.
(mm)
Electrical entry
Model
VCS21
VCS31
VCS41
P
Port size
B
C
1/8
13.5
28
64
D
31
E
F
H
K
L
M
N
Grommet: G
Conduit: C
Q
R
Q
R
50
6.5
12.5
28
14
12.8
M4
4.5
22
59
44
8.5
Conduit terminal: T
Q
99
R
S
U
50
66
83
86
1/4
18
36
67.5
31
12.5
28
18
12.8
M4
6
22
62
44
53
53
66
1/4, 3/8
22
40
81.5
36.5
11
15
32
20
19
M5
8
24
76
46
66.5
101
66.5
68
99
1/2
30
50
86
36.5
13.5
15
32
25
23
M5
8
24
80
46
71
101
71
68
104
1/4, 3/8
22
45
90
41
11
17
36
22.5
23
M5
8
26
84
48
74.5
103
74.5
70
107
1/2
30
50
94
41
13.5
17
36
25
23
M5
8
26
88
48
78.5
103
78.5
70
111.5
3/4
35
60
102
41
17.5
17
36
30
28.2
M5
8
26
96
48
86.5
103
86.5
70
119
®
4
A
99
Series VCS
Direct Operated 2 Port for Steam
How to Order Manifolds
How to Order Manifold Assemblies (Example)
D 02 01
VV2C S 2
For steam
Thread type
Manifold material: Brass
Symbol
Nil
Series
2
3
4
Enter the valve and option models to be mounted
under the manifold base part number.
<Example>
VV2CS2-D0501 ……….1 set Manifold part no.
N
F
Class 2
Class 3
Class 4
Thread type
Rc
NPT
G
∗ VCS23-1G-2 ………... 5 sets Valve part no.
(Stations 1 to 5)
"∗" is the symbol for
Enter together in
mounting.
order, counting
Add a "∗" in front of the
from station 1 on
part numbers for solenoid
the D side.
valves, etc., to be mounted.
OUT port size
Material
Symbol
Stations
Symbol Body material Seal material
D
Brass
FKM
H
Stainless steel
FKM
02
:
10
01
02
2 stations
:
10 stations
Port size
1/8 (6A)
1/4 (8A)
n
U
e
sid
5
∗ All IN ports are 3/8.
4
3
∗ Refer to the L
dimensions on page
6 regarding the
maximum number of
stations.
2
ns
tio
Sta
D
1
e
sid
How to Order Valves (for Manifold)
VC S 2 3
1 G
2
For steam
Material and insulation type
• Body material: Brass
• Seal material: PTFE
• Coil insulation: Class H
Symbol Body material Seal material Coil insulation
Nil
PTFE
Brass
D
FKM
Class H
R
PTFE
Stainless
steel
N
FKM
Series
2
3
4
Class 2
Class 3
Class 4
Note) High corrosion resistant specification used for
armature material.
Orifice size
Valve type
3
Symbol
N.C. for manifold
Voltage
1
2
3
4
36
Electrical entry
100VAC
200VAC
110VAC
220VAC
230VAC
G
C
T
TL
Grommet
Conduit
Conduit terminal
With conduit terminal/light
2
3
4
5
7
Orifice size
ø2mm
ø3mm
ø4mm
ø5mm
ø7mm
Class 2
–
Class 3
–
Class 4
–
∗ Consult SMC regarding other voltages.
Manifold Options
Blanking plate assembly
VVCS 2 0
JIS symbol
3A
Series
2
3
4
Material and insulation type
Class 2
Class 3
Class 4
This is used by mounting it on the manifold
block when a valve is removed for
maintenance or when the mounting of an
additional valve is planned, etc.
Symbol Plate material Seal material
PTFE
NIl
Brass
FKM
D
PTFE
R
Stainless
steel
FKM
N
®
5
Series VCS
Direct Operated 2 Port for Steam
Dimensions (mm)
(Y)
Z
R
T
1in = 25.4mm
T
25
∗
∗: Thread type
(N)
2.5
Q
S
E
(X)
l = 280
l = 300
IN port 2- 3/8
SMC
L1
L2
L3
D side
Stations
2
16
3
4
n
5
U side
P=J
∗
∗
N- 1/4
N- 1/8
: Thread type
(pitch)
∗
H
2
H
5.5
16
21
1
C
B
C
A
D
G
SMC
L dimensions
Model
(mm)
n (stations)
Dimensions
VV2CS2
VV2CS3
VV2CS4
2
3
4
5
6
7
8
9
10
L1
69
103.5
138
172.5
207
241.5
276
310.5
345
L2
81
115.5
150
184.5
219
253.5
288
322.5
357
L3
93
127.5
162
196.5
231
265.5
300
334.5
369
L1
77
115.5
154
192.5
231
269.5
308
346.5
385
L2
89
127.5
166
204.5
243
281.5
320
358.5
397
L3
101
139.5
178
216.5
255
293.5
332
370.5
409
L1
83
124.5
166
207.5
249
290.5
332
373.5
415
L2
95
136.5
178
219.5
261
302.5
344
385.5
427
L3
107
148.5
190
231.5
273
314.5
356
397.5
439
2 stns. x 1
3 stns. x 1
2 stns. x 2
2 stns. + 3 stns.
3 stns. x 2
3 stns. x 3
2 stns. x 2 + 3 stns. x 2
Manifold composition
2 stns. x 2 + 3 stns. 2 stns. + 3 stns. x 2
Note) Manifold bases are composed by connecting 2 station and 3 station bases.
Dimensions
(mm)
Electrical entry
Model
B
A
D
E
G
H
J
Z
Grommet: G
Q
R
Conduit: C
S
Conduit terminal: T
T
N
X
41.5
66
99
Y
VV2CS2
49
20
24.5
28
4.5
38
17.3
34.5
56
22
50.5
44
VV2CS3
57
25.5
28.5
30
5.5
42
19.3
38.5
66
24
60
45.5
51
68
101
86.5
VV2CS4
57
25.5
28.5
30
5.5
42
20.8
41.5
74
26
68
47.5
58.5
70
103
94
®
6
C
77
Series VCS
Direct Operated 2 Port for Steam
VCS (for steam) 2 port solenoid valve
Material
Model
Body
Class
2
VCS
(for steam)
2 port
solenoid
valve
PTFE
(FKM)
Brass
(stainless
steel)
3
4
Orifice size
Port size
Seal
Note 1)
ø2
ø3
ø4
ø5
ø7
ø10
1/8 ( 6A)
–
–
1/4 ( 8A)
–
–
1/4 ( 8A)
–
–
3/8 (10A)
–
1/2 (15A)
–
–
–
–
–
1/4 ( 8A)
–
–
3/8 (10A)
–
1/2 (15A)
–
–
–
–
–
3/4 (20A)
–
–
–
–
–
Note 1) ø10 is available with seal meterial FKM only.
For saturated steam
Downstream pressure of valve (P2) MPa
1.0
0.9
[664] (183)
Upstr
eam
press
ure o
f valv
e P1
[664] (179)
0.95
0.9
0.85
[661] (170)
0.8
0.7
0.7
5
[660] (164)
0.7
0.6
0.6
5
[658] (153)
0.6
0.5
0.5
5
0.5
[656] (151)
0.4
0.4
5
0.4
[654] (143)
0.3
5
0.3
0.3
[650] (133)
0.2
0.2
0. 5
0.1 2
[646] (120)
5
0.
0.1
0.0 1
5
0.8
VCS21ø2
VCS21ø3
VCS21ø4
VCS21ø5
3
VCS 41ø3
VCS31ø4
VCS31ø5
VCS41ø4
VCS41ø5
3
VCS 41ø7
[662] (174)
5
10
10
15
20
25
15
20 25
30
15
20 25
10
20
20
30
40
20
30
40
30
20
40
50
20
30
40
60
30 40 50
Viewing the graph
The sonic range pressure to generate a flow rate of
25kg/h
for orifice ø3 (VCS21) is P1 approx. 0.68MPa
for orifice ø4 (VCS21) is P1 approx. 0.40MPa
for orifice ø5 (VCS21) is P1 approx. 0.29MPa
= 1.0
MPa
ic
son
Sub
ical
Crit sure
pres
ic
Son
15
30
50
60
S = 2.8mm²
S = 5.9mm²
S = 9.2mm²
S = 11.7mm²
S = 6.3mm²
S = 9.7mm²
S = 14.4mm²
S = 10.8mm²
S = 15.3mm²
S = 24.8mm²
The holding heat differs somewhat depending
on the pressure P1, but at 25kg/h it is
approximately 16000kcal/h.
How to find
the flow rate for saturated steam
1. For subsonic range
Where P1 + 0.1013 = (1 to 2) (P2 + 0.1013)
• Formula based on Cv factor
Q = 197.8⋅Cv⋅ ∆P (P2 + 0.1013) … kg/h
• Formula based on effective area
Q = 11.0⋅S⋅ ∆P (P2 + 0.1013) … kg/h
2. For sonic range
Where P1 = 0.1013≥2 (P2 + 0.1013)
• Formula based on Cv factor
Q = 98.9⋅Cv⋅ (P1 + 0.1013) … kg/h
• Formula based on effective area
Q = 5.5⋅S⋅ (P1 + 0.1013) … kg/h
Flow rate Q kg/h
Figures inside [ ] indicate the saturated steam holding heat (kcal/kg).
Figures inside ( ) indicate the saturation temperature (°C).
Note:
1MPa = 145psi
®
7
Series VCS
Direct Operated 2 Port for Steam
Explanation of Terminology
Pressure Terminology
1. Maximum operating pressure differential
This indicates the maximum pressure differential (upstream
and downstream pressure differential) which can be allowed
for operation with the valve closed or open. When the
downstream pressure is 0MPa, this becomes the maximum
operating pressure.
2. Maximum operating pressure
This indicates the limit of pressure that can be applied inside
the pipelines. (line pressure)
(The pressure differential of the solenoid valve unit must be no
more than the maximum operating pressure differential.)
3. Withstand pressure
The pressure which must be withstood without a drop in
performance after returning to the operating pressure range.
(the value under the prescribed conditions)
Electrical Terminology
1. Surge voltage
A high voltage which is momentarily generated in the shut-off unit
by shutting off the power.
Other
1. Materials
PTFE: Tetrafluoroethylene resin – Trade names: Teflon®,
Polyflon®, etc.
FKM: Fluoro rubber – Trade names: Viton®, Dai-el®, etc.
®
8
Series VCS
Direct Operated 2 Port for Steam
Safety Instructions
These safety instructions are intended to prevent a hazardous situation and/or
equipment damage. These instructions indicate the level of potential hazard by a
label of "Caution", "Warning" or "Danger". To ensure safety, be sure to observe
ISO 4414 Note 1) and other safety practices.
Caution :
Operator error could result in injury or equipment damage.
Warning :
Operator error could result in serious injury or loss of life.
Danger :
In extreme conditions, there is a possible result of serious injury or loss of life.
Note 1) ISO 4414 : Pneumatic fluid power -- Recommendations for the application of equipment to transmission and control
systems
Warning
1. The compatibility of equipment is the responsibility of the person who designs
the system or decides its specifications.
Since the products specified here are used in various operating conditions, their compatibility for the
specific system must be based on specifications or after analysis and/or tests to meet your specific
requirements. Be particularly careful in determining the compatibility of the fluid to be used.
2. Only trained personnel should operate machinery and equipment.
The fluid can be dangerous if handled incorrectly. Assembly, handling or repair of systems should be
performed by trained and experienced operators.
3. Do not service machinery/equipment or attempt to remove components until
safety is confirmed.
1. Inspection and maintenance of machinery/equipment should only be performed after confirmation of safe
locked-out control positions and measures to prevent danger from the fluid.
2. When equipment is to be removed, confirm the safety process as mentioned above, release fluid
pressure and be certain there is no danger from fluid leakage or fluid remaining in the system.
3. Restart machinery carefully, confirming that safety measures are being implemented.
4. Contact SMC if the product is to be used in any of the following conditions:
1. Conditions and environments beyond the given specifications, or if product is used outdoors.
2. With fluids whose application causes concern due to the type of fluid or additives, etc.
3. An application which has the possibility of having negative effects on people, property, or animals,
requiring special safety analysis.
®
9
Series VCS
Direct Operated 2 Port for Steam
2 Port Solenoid Valve for Fluid Control/Precautions 1
Be sure to read before handling
Precautions on Design
Warning
1. Cannot be used as an emergency shutoff
valve, etc.
The valves presented in this catalog 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
Consult SMC if valves will be continuously energized for extended periods of time.
3. Liquid seals
In cases with a flowing liquid, provide a by-pass valve in the
system to prevent the liquid from entering the liquid seal circuit.
4. This solenoid valve cannot be used for explosion proof applications.
5. Maintenance space
The installation should allow sufficient space for maintenance
activities (removal of valve, etc.).
Selection
Warning
1. Confirm the specifications.
Give careful consideration to operating conditions such as the
application, fluid and environment, and use within the operating
ranges specified in this catalog.
2.Fluid temperature
Operate within the prescribed fluid temperature range. The
temperature range changes depending on the seal material,
coil insulation and the type of power supply, etc.
3.Fluid quality
The use of fluid which contains foreign matter can cause
problems such as malfunction and seal failure by promoting
wear of the valve seat and core, 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.
Water supplied to boilers includes substances such as calcium
and magnesium which generate hard scale and sludge. Since
this scale and sludge can cause valve malfunction, install water
softening equipment, and a steam filter (strainer) directly
upstream from the valve to remove these substances.
Caution
1. Leakage voltage
Particularly when using a resistor in parallel with a switching
element and using a C-R element (surge voltage suppressor)
to protect the switching element, take note that leakage current will flow through the resistor and C-R element, etc., creating a danger that the valve may not shut OFF.
Switching element
Leakage voltage
Power supply
OFF
C
R
Valve
Leakage current
AC coil
10% or less of rated voltage
2. Low temperature operation
1. The valve can be used at ambient temperatures as low as
–20°C, but take measures to prevent freezing or solidification
of impurities, etc.
2. When used in cold areas, adopt freeze prevention measures
such as draining the water from pipelines. If warmed with a
heater, etc., avoid the coil unit. Also, implement warming or
other freeze prevention measures for the body.
®
10
Series VCS
Direct Operated 2 Port for Steam
2 Port Solenoid Valve for Fluid Control/Precautions 2
Be sure to read before handling
Mounting
Warning
1. If air leakage increases or equipment does
not operate properly, stop operation.
After mounting is completed, confirm that it has been done
correctly by performing a suitable function test.
2. Do not apply external force to the coil
section.
When tightening is performed, apply a wrench or other tool to
the outside of the piping connection parts.
3. Do not warm the coil assembly with a heat
insulator, etc.
Piping
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.
2. Wrapping of pipe tape
When connecting pipes and fittings, etc., be sure that chips from
the pipe threads and sealing material do not get inside the
valve.
Furthermore, when pipe tape is used, leave 1.5 to 2 thread ridges exposed at the end of the threads.
Winding
direction
Use tape and heaters, etc., for freeze prevention on the piping
and body only. They can cause burn out of the coil.
4. Secure with brackets, except in the case of
steel piping and copper fittings.
5. Avoid sources of vibration, or adjust the arm
from the body to the minimum length so that
resonance will not occur.
6. Instruction manual
Mount the product after reading the manual carefully and
understanding its contents. Also keep the manual where it can
be referred to as necessary.
7. Painting and coating
Warnings or specifications printed or pasted on the product
should not be erased, removed or covered up.
Ex
po
se
Pipe tape
ap
pro
x.
2t
hre
ad
s
3. Avoid connection of ground lines to piping,
as this may cause electric corrosion of the
system.
4. Always tighten threads with the proper
tightening torque.
When screwing fittings into valves, tighten with the proper tightening torque shown below.
Tightening torque for piping
Rc 1/8
Proper tightening torque N⋅ m
7 to 9
Rc 1/4
12 to 14
Rc 3/8
22 to 24
Rc 1/2
28 to 30
Rc 3/4
28 to 30
Connection threads
5. Connection of piping to products
When connecting piping to a product, refer to its instruction
manual to avoid mistakes regarding the supply port, etc.
6. Steam generated in a boiler contains a large
amount of drainage.
Be sure to operate with a drain trap installed.
7. When connecting piping to a valve, be sure to
tighten while holding the valve with a wrench
or other tool.
®
11
Series VCS
Direct Operated 2 Port for Steam
2 Port Solenoid Valve for Fluid Control/Precautions 3
Be sure to read before handling
Operating Environment
Wiring
Warning
Caution
1. As a rule, use electrical wire of 0.5 to
1.25mm² for wiring.
Furthermore, do not allow excessive force to
be applied to the lines.
2. Use electrical circuits which do not generate
chattering in their contacts.
3. Use voltage which is within ±10% of the rated voltage. In cases with a DC power supply
where importance is placed on responsiveness, stay within ±5% of the rated value. The
voltage drop is the value in the lead wire section connecting the coil.
4. When surge from the solenoid affects the
electrical circuitry, install a surge absorber,
etc., in parallel with the solenoid.
Electrical Connections
1. Do not use valves in atmospheres of
corrosive gases, chemicals, salt water, water,
or where there is direct contact with same.
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.
Maintenance
Warning
1. Perform maintenance in accordance with the
procedures in the instruction manual.
Improper handling can cause damage or malfunction of
machinery and equipment, etc.
In addition, perform maintenance inspections once every six
months to ensure optimum performance.
Caution
Grommet/Conduit
2. Removing the product
AWG18
Lead wire
color
2
1
Blue Blue
Rated
voltage
1
2
100VAC
200VAC Red Red
Other AC Gray Gray
Conduit terminal
In the case of the conduit terminal, make connections according to
the marks shown below.
Terminal cover
A
Round head
combination screw
M3
– mark
2
-
1
+
Caution
A
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 0.1MPa.
3. Clean strainers when the pressure drop reaches 0.1MPa.
Round head
combination screw
Conduit terminal
View A-A
(Internal connection diagram)
2. Storage
∗ There is polarity only when equipped with light.
In case of long term storage after use with steam, first thoroughly remove all moisture to prevent rust and deterioration of rubber materials, etc.
Electrical Circuits
Caution
Grommet/Conduit
AC
Operating Precautions
Conduit terminal
SOL.
AC
Warning
SOL.
Without light
AC
SOL.
With light
®
12
3. Low frequency operation
Switch valves at least once every 30 days to prevent
malfunction.
+ mark
M3
The valve will reach a high temperature when used with high
temperature fluids such as steam. Confirm that the valve
temperature has dropped sufficiently before performing work. If
touched inadvertently, there is a danger of being burned.
Removal
1. Shut off the fluid supply and release the fluid pressure in the
system.
2. Shut off the power supply.
3. Demount the product.
Light
1. Valves will reach high temperatures from high
temperature fluids such as steam. Use
caution, as there is a danger of being burned
if a valve is touched directly.
2. Valves may reach high temperatures when
continuously energized. Use caution, as there
is a danger of being burned if a valve is
touched directly.
Series VCS
Direct Operated 2 Port for Steam
Specific Product Precautions
Be sure to read before handling
Refer to pages 9 through 12 for safety instructions and precautions regarding 2 port solenoid valve for fluid control
Replacing the Solenoid Coil
Caution
Replacement Parts
Solenoid coil part numbers
The valve will reach high temperatures from high
temperature fluids such as steam. Confirm that the
valve has cooled sufficiently before performing work. If
touched inadvertently, there is a danger of being
burned.
Clip
VCS 20
1 G
Lead wire length
Series
20
30
40
Class 2
Class 3
Class 4
Nil
L1
L2
L3
L4
Voltage
1
2
3
4
36
Flat head screw driver
Solenoid coil
Insert a flat head screw driver
into the hook section of the clip
groove.
Clip
100VAC
200VAC
110VAC
220VAC
230VAC
300mm
600mm
1000mm
1500mm
3000mm
Electrical entry
G
C
T
TL
Grommet
Conduit
With conduit terminal
With conduit terminal/light
part numbers
AZ-T-VCS
Page 1 Valve model
How to Order Valves → Page 5 Valve model
Note) Indicate the valve model, as a label will be attached to the clip.
Seal
part numbers
Valve
For VCS20
OR-1860-120- P
Tilt the screw driver down in
direction so that the clip slides
out in direction .
For VCS30
P: PTFE
F: FKM
OR-2380-130- P
For VCS40
P: PTFE
F: FKM
OR-2600-180- P
Manifold
P: PTFE
F: FKM
For VCS20
OR-1400-178- P
P: PTFE
F: FKM
OR-2670-178- P
For VCS30, 40
When the loosened clip is pulled
out in direction using
pinchers, etc., the coil can be
removed and replaced in
direction .
P: PTFE
F: FKM
OR-1717-178- P
P: PTFE
F: FKM
OR-3305-178- P
P: PTFE
F: FKM
After replacing the coil, the clip is reinstalled by pushing it back in the
direction opposite to its removal.
When external leakage occurs after disassembling a valve,
replace the above seals.
®
13
®
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2990 Technology Drive
Rochester Hills, MI 48309
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3434 US Hwy. 22 West, Ste. 110
Somerville, NJ 08876
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Earth City, MO 63045
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27725 Diehl Road
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2001 W. Melinda Lane
Phoenix, AZ 85027
Tel: (623) 492-0908
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8507-H Benjamin Road
Tampa, FL 33634
Tel: (813) 243-8350
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4598 Olympic Blvd.
Erlanger, KY 41018
Tel: (606) 647-5600
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14191 Myford Road
Tustin, CA 92780
Tel: (714) 669-1701
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14107 N.E. Airport Way
Portland, OR 97230
Tel: (503) 252-9299
FAX: (503) 252-9253
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10203 A East 61st Street
Tulsa, OK 74146
Tel: (918) 252-7820
FAX: (918) 252-9511
Europe
ENGLAND
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SMC offers the same quality and engineering expertise in many other pneumatic components
Valves
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Valves
Proportional Valves
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Miniature Valves
Fluid Valves
Cylinders/Actuators
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© 1978-2000 SMC Pneumatics, Inc. All Rights Reserved.
April 2000
Air Preparation Equipment
Filters-Regulators-Lubricators
Coalescing Filters
Micro Mist Separators
Fittings
Air Fittings
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