33
Insert the tube to connect as far as the
tube stopper contacts the tubes. Pull the
tube to confirm the connection.
For tube removal, push the release ring
forward parallel to the ring, and pull the
tube out.
Tube installation and removal
Either nylon or urethane tubes can be
used. Use tubes that are not scratched on
their outer surface.
The tube’s outer diameter tolerance
should be within
±
0.1mm [
±
0.004in.] of
the nominal dimension, and within 0.2mm
[0.008in.] for the ellipticity (difference
between long and short diameter).
Tubes
Caution: Do not excessively bend the tube near
fittings.
Subsonic speed flow when
P
1
＋
0.1013
＜
1.89 (P
2
＋
0.1013)
Q
＝
226S
Δ
P (P
2
＋
0.1013)
Sonic speed flow when
P
1
＋
0.1013
≧
1.89 (P
2
＋
0.1013)
Q
＝
113S (P
1
＋
0.1013)
Q: Air flow rate
〔
R
/min (ANR)
〕
S: Effective area
〔
mm
2
〕
Δ
P: Pressure drop P
1
−
P
2
〔
MPa
〕
P
1
: Upstream pressure
〔
MPa
〕
P
2
: Downstream pressure
〔
MPa
〕
※
Corrections for variances in air temperature
Multiply the flow rate calculated in the formula
above by the coefficients in the table below.
Since the 1(P) and exhaust ports are on
both ends of the manifold, piping direction
can be selected depending on the
application (excluding some models).
At shipping, plugs are temporarily
screwed in ports at one end, but are not
firmly tightened. Regardless of which end
piping is connected, always remove the
plugs, use sealing tape or apply other
sealing agent, and securely tighten the
plugs into the unused ports.
1.
Sealing tape wrapping method
q
Before piping, use air blowing (flushing)
or cleaning to eliminate any machining
chips, cutting oil, or dust, etc., remain-
ing inside the pipes.
w
When screwing in piping or fittings,
caution should be taken to avoid letting
machining chips or sealing materials
from entering into the valves. When
using sealing tape, wrap it so that 1.5
〜
2 screw threads remain.
Piping
Remain about 2 screw
theads
Sealing tape
Wrapping direction
How to find the flow rate
Air temperature
°C [°F]
Correction
coefficient
–20
[–4]
1.08
–10
[14]
1.06
0
[32]
1.04
10
[50]
1.02
30
[86]
0.98
40
[104]
0.97
50
[122]
0.95
60
[140]
0.94
M3
M5
×
0.8
Rc (PT )1/8
Rc (PT)1/4
Rc (PT) 3/8
Rc (PT) 1/2
Rc (PT) 3/4
Rc (PT) 1
Rc (PT) 1 1/4
Rc (PT) 1 1/2
59 (6) [5.2]
157 (16) [13.9]
686
〜
883 (70
〜
90) [60.8
〜
78.1]
1177
〜
1373 (120
〜
140) [104
〜
122]
2157
〜
2354 (220
〜
240) [191
〜
208]
2746
〜
2942 (280
〜
300) [243
〜
260]
2746
〜
2942 (280
〜
300) [243
〜
260]
3530
〜
3727 (360
〜
380) [313
〜
330]
3923
〜
4119 (400
〜
420) [347
〜
365]
4707
〜
4903 (480
〜
500) [417
〜
434]
2.
Tightening torque for piping
1.
While any mounting direction is
allowed, be sure to avoid strong shocks
or vibrations applied directly to the
body. Also, avoid strong shocks in the
lateral direction when using a mounting
base for installation. For the order code,
see the Additional Parts item under
each series.
2.
Avoid using in the locations and
environment listed below, as it could
result in malfunction of the valve. If use
in such conditions is unavoidable,
always provide a cover or other
adequate protective measures.
●
Location directly exposed to water
drops or oil drops
●
Environment where a valve body is
subject to dew condensation
●
Location directly exposed to machining
chips, dust, etc
3.
Install a muffler, etc. in the exhaust port
to prevent dust from entering into the
piping.
4.
In piping connection with valves, flush
the tube completely (by blowing
compressed air) before piping.
Intrusion of machining chips or sealing
tape, rust, etc., generated during
plumbing could result in air leaks and
other defective operations.
5.
When mounting a valve unit inside the
control panels or when the operation
requires long energizing periods,
consider providing heat radiation
measure such as ventilation.
6.
Never use the valve with the 4(A) and
2(B) ports vent to atmosphere.
Mounting
Can be used without lubrication. When the
actuator requires lubrication, use Turbine
Oil Class 1 (ISO VG32) or the equivalent.
Avoid using spindle oil or machine oil.
Lubrication
1.
Use air for the media. For the use of
any other media, consult us.
2.
Air used for the cylinder should be
clean air that contains no deteriorated
compressor oil, etc. Install an air filter
(filtration of 40 µm or less) near the
valve to remove collected liquid or dust.
In addition, drain the air filter
periodically.
3.
When supply pressure is low, use
piping for the 1(P) port with sufficient
tube size.
Media
The product cannot be used when the
media or ambient atmosphere contains
any of the substances listed below.
Organic solvents, phosphate ester type
hydraulic oil, sulphur dioxide, chlorine gas,
or acids, etc.
Atmosphere
To close the unused stations, use a block-
off plate.
For the order code, see the Additional
Parts item under each series.
Block-off plate
Cautions: 1. For the 1(P) port piping, use a size
that matches the manifold’s piping
connection port.
2. When installing piping or mufflers to
the exhaust port, ensure there will
be minimum exhaust resistance.
3. On rare occasions, exhaust can
interfere with other valves and
actuators. In this case, let exhaust
from the R ports on both ends.
4. When a multiple number of valves
are operating simultaneously on a
multi-unit manifold, or during high
frequency applications, supply air
from the 1(P) ports on both ends,
and let exhaust from the R ports on
both ends.
5. Since the twin solenoid valve uses 2
stations, it cannot be mounted on
the final station.
6. In the 025 series, the seal between
the valve and manifold is used
reversed top-to-bottom, in accord-
ance with the valve function (NC or
NO). Install the seal as the mark
(NC or NO) is located on the valve
side and matches the valve function.
General Precautions
Suitable tightening torque
N
・
cm (kgf
・
cm) [in
・
lbf]
Connection
thread
