CKD MN3Q0 Series User manual

SM-P00045-A/2
INSTRUCTION MANUAL
BLOCK MANIFOLD
MN3Q0, MT3Q0 SERIES
● Please read this instruction manual carefully
before using this product, particularly the
section describing safety．
● Retain this instruction manual with the
product for further consultation whenever
necessary．

[SM-P00045-A/2] －1－
Safety precautions
When designing and manufacturing a device using CKD products, the manufacturer is obligated to
manufacture a safe product by confirming safety of the system comprising the following items:
Device mechanism
Pneumatic or water control circuit
Electric control that controls the above
It is important to select, use, handle, and maintain the product appropriately to ensure that the CKD
product is used safely.
Observe warnings and precautions to ensure device safety.
Check that device safety is ensured, and manufacture a safe device.
1. This product is designed and manufactured as a general industrial machine part.
It must be handled by someone having sufficient knowledge and experience.
2. Use this product within its specifications.
This product cannot be used beyond its specifications. Additionally, the product must not be
modified or machined.
This product is intended for use in general industrial devices and parts. Use beyond such
conditions is not considered. Consult with CKD for details when using the product beyond the
unique specification range, outdoors, or in the following conditions or environments. In any case,
measures for safety shall be provided when the vavle malfunctions.
①Use for special applications requiring safety including nuclear energy, railroad, aviation, ship,
vehicle, medical equipment, equipment or applications coming into contact with beverage or
food, amusement equipment, emergency shutoff circuits, press machine, brake circuits, or for
safeguard.
②Use for applications where life or assets could be adversely affected, and special safety
measures are required.
3. Observe corporate standards and regulations, etc., related to the safety of
device design and control, etc.
ISO4414, JIS B 8370 (pneumatic system rules)
JFPS2008 (principles for pneumatic cylinder selection and use)
Including High Pressure Gas Maintenance Law, Occupational Safety and Sanitation Laws, other
safety rules, standards and regulations, etc.
4. Do not handle, pipe, or remove devices before confirming safety.
①Inspect and service the machine and devices after confirming safety of the entire system related
to this product.
②Note that there may be hot or charged sections even after operation is stopped.
③When inspecting or servicing the device, turn off the energy source (air supply or water supply),
and turn off power to the facility. Release any compressed air from the system, and pay enough
attention to possible water leakage and leakage of electricity.
④When starting or restarting a machine or device that incorporates pneumatic components, make
sure that system safety, such as pop-out prevention measures, is secured.
5. Observe warnings and cautions on the pages below to prevent accidents.
WARNING

[SM-P00045-A/2]
－2－
■The safety cautions are ranked as "DANGER", "WARNING" and "CAUTION" in
this section.
: When a dangerous situation may occur if handling is mistaken
leading to fatal or serious injuries, or when there is a high degree
of emergency to a warning.
:When a dangerous situation may occur if handling is mistaken
leading to fatal or serious injuries.
: When a dangerous situation may occur if handling is mistaken
leading to minor injuries or physical damage.
Note that some items described as "CAUTION" may lead to serious results depending on
the situation. In any case, important information that must be observed is explained.
Precautions with regard to guarantee
zGuarantee period
The guarantee period of our product shall be one (1) year after it is delivered to the place specified
by the customer.
zGuarantee coverage
If any failure for which CKD CORPORATION is recognized to be responsible occurs within the
above warranty period, a substitute or necessary replacement parts shall be provided free of
charge, or the product shall be repaired free of charge at the plant of CKD CORPORATION.
However, the guarantee excludes following cases:
① Defects resulting from operation under conditions beyond those stated in the catalogue or speci-
fications.
② Failure resulting from malfunction of the equipment and/or machine manufactured by other
companies.
③ Failure resulting from wrong use of the product.
④ Failure resulting from modification or repairing that CKD CORPORATION is not involved in.
⑤ Failure resulting from causes that could not be foreseen by the technology available at the time
of delivery.
⑥ Failure resulting from disaster that CKD is not responsible of.
Guarantee stated here covers only the delivered products. Any other damage resulting from failure of
the delivered products is not covered by this guarantee.
zConfirmation of product compatibility
Our customer shall be responsible of confirming compatibility of our product used in our customer’s
system, machinery or device.
WARNING
DANGER
CAUTION

[SM-P00045-A/2] －3－
UNPACKING (Chapter 3.)
Bags containing solenoid valves should be opened only when you
are ready to connect the valves to the pipes immediately afterward.
yIf bags are opened before the valves are ready to be connected to
the pipes, the entry of foreign matter from the piping ports could
cause the solenoid valves to fail or malfunction.
INSTALLATION (Chapter 4.)
If you have to use the product under conditions that are different
from the specified conditions or if you intend to use the product for
a special application, be sure to consult us about the product
specifications before using the product.
ENVIRONMENT (Section 4.1)
a) In a dusty environment, foreign matter may enter even
through the exhaust port.
yForeign matter may go into the inside of a solenoid valve by the
direction of an exhaust port, which may cause inhalation of foreign
matter near the exhaust port. Attach a silencer to the exhaust port
or have the exhaust port face downward.
b) Keep the solenoid valve system dry. Take care to avoid direct
contact with dripping water or splashes of cutting oil.
yIf the solenoid valve system is wet by a direct contact with water or
cutting oil, an electrical leak or burnt solenoid coils may result.
Protect the solenoid valve system by using a cover or by installing
it inside a paneled casing. If the cylinder rod is splashed with
cutting oil, the oil may penetrate through the cylinder into the
secondary side piping of the solenoid valve. This must be
prevented to avoid malfunctions.
c) The coils will produce heat.
yParticularly if the solenoid valve system is installed in a control
board or if the solenoid coils need to be energized for a long time,
consider providing sufficient ventilation to release the heat. The
coils can get very hot.
yThe coil temperature may be raised with the ambient temperature
and/or energization time, thus pay sufficient attention when
touching the valves.
d) Do not use the solenoid valve system in an atmosphere that
includes a corrosive gas or solvent vapors.
yDo not use the solenoid valve system in an atmosphere that
includes a corrosive gas such as the sulfur dioxide gas or in an
atmosphere that includes solvent vapors.
e) Vibration resistance and shock resistance
yDo not subject the solenoid valve system to vibrations 50m/s2or
stronger or shocks 300m/s2or stronger.
f) Avoid using the solenoid valve system in a humid environment
because the humidity is likely to cause condensation with a
change in the temperature.
g) Do not use the normal type solenoid valves for an application
that requires conformity with explosion-proof specifications.
Choose explosion-proof solenoid valves instead.
h) The packing and gaskets may deteriorate sooner than usual if
used in an atmosphere with a higher than normal density of
ozone (for example, the atmosphere near a beach or in an area
with frequent thunderstorms).
i）There is no resistance to surges caused by overvoltage from
switching and lightning transients(CE Marking :IEC61000-4-5).
Please take measures against surges on the equipment side.
！
WARNING :
！
CAUTION :
！
CAUTION :

[SM-P00045-A/2]
－4－
INSTALLATION (Section 4.2)
a) When installing a solenoid valve unit, never attempt to hold it in
position by means of the pipes connected to it.
yMount the solenoid valve by applying the mounting screws and/or
mounting plate to the solenoid valve.
b) Tighten the screws with proper torque. If the assembly or tight-
ening is not conducted properly, it may cause some air leakage,
falling-off of products, screw damaging or deform of DIN rail.
If the manifold weights more than 1 kg, or when using in an
environment with vibration or shock, fix the DIN rail onto the
surface at 50 to 100mm spacing.
PIPING (Section 4.3)
a) Observe the recommended tightening torque when connecting
pipes.
yObserving the recommended tightening torque prevents air
leakage and damage to the screw threads. To prevent damage to
the screw threads, first use your hand to lightly tighten the screw
and then use a tool to tighten the screw to the recommended
torque.
b) Make sure that the pipes will not be disconnected at the joints
by mechanical movements, vibrations or tension.
yIf the exhaust piping of the pneumatic circuit is disconnected, the
actuator speed control is disabled.
yIf the above happens to a chuck holding mechanism, the chuck
will open. The inadvertent opening of the chuck may cause a
serious accident.
c) When supplying the compressed air for the first time after
completing the piping, be sure to check every joint in the piping
for air leakage.
d) When supplying the compressed air for the first time after
completing the piping, increase the air pressure gradually but
never introduce a highly-pressurized air suddenly.
yA sudden introduction of a highly-pressurized air may disconnect
pipes at joints and/or cause the tubes to jump around, any of
which may cause an injury.
e) Do not decrease the inside diameter of the piping from any of
the solenoid valve exhaust ports to a diameter less than the
exhaust pipe connecting port size.
yNormal operation of the actuator depends on the smoothness of
the exhaust flow. With a manifold system, a restriction to the
exhaust flow may prevent normal operation of other solenoid
valves.
f) Removal of foreign matter
yRust and other foreign matter in the pneumatic circuit may cause a
malfunction or leakage from the valve seat. Insert a filter
(maximum allowable particle size 5 μm or less) immediately
upstream of the solenoid valve.
g) Air supply
yDo not restrict the flow of air through the air supply piping. With a
manifold system with multiple stations, a drop in the air supply
pressure may cause trouble through a delay in the operation
timing.
！
CAUTION :
！
CAUTION :
！
WARNING :

[SM-P00045-A/2] －5－
WIRING (Section 4.4)
Be sure to turn off the power, before conducting any wiring opera-
tions. Also, do not touch or make the wet hands close to the termi-
nal areas while they are energized. It may result in electric shock.
a) Confirm the used voltage and polarities securely, when wiring.
b) The voltage drop may be caused with the simultaneous
energization and/or cable length. Confirm the voltage drop on
the solenoid valve is with in 10% of its rated voltage.
c) Connect this product with the output unit. In case the product is
connected with the input unit, it may result in serious trouble(s),
not only on these apparatus but also on the peripheral equip-
ments.
Check valve (Section 5.1)
The exhaust check valve blocks the back pressure from adja-
cent air device, etc. However, the structure does not allow the
pressure seal to be held continuously, so do not use for pur-
poses other than the back pressure block.
MANUAL OVERRIDE (Section 5.2)
When conducting manual operations, make sure that there are
no people near the moving cylinder.
AIR QUALITY (Section 5.3)
a) Do not supply anything other than compressed air.
b) Supply clean compressed air without any mixture of corrosive
gas.
a) Compressed air usually contains a large amount of drain,
oxidized oil, tar, foreign matter, and rust from the piping. Filter
out those elements in the supplied air because they may cause
a malfunction and decrease service life. In addition, clean the
exhaust before it is released to the air to minimize pollution.
b) Basically the product is designed as oilless specifications,
however if you prefer to supply oil, use the class 1 turbine oil
(additive-free) ISO VG32.
c) Do not use spindle oil or machine oil. They may induce
expansion of the rubber parts, which may cause a malfunction.
！
CAUTION :
！
WARNING :
！
WARNING :
！
WARNING :
！
CAUTION :
！
WARNING :

[SM-P00045-A/2]
－6－
ELECTRIC CIRCUITS (Section 5.4)
a) Check for the presence of any current leak from the external
control device because it may cause an erroneous valve
operation.
yWhen a programmable controller or a similar control device is
used, a current leak may prevent the normal returning of the valve
when the solenoid is de-energized.
b) Restriction on current leak
yWhen controlling solenoid valves using a programmable controller
or a similar control device, make sure that the current leak in the
programmable controller output is equal to or less than the level
shown in the table below. A current leak larger than the allowable
level may cause an erroneous valve operation.
！
CAUTION :
24VDC 1.8 mA or lower
CR circuit
Leakage
current
Solenoid valve
Contact C
R
Programmable
controller

[SM-P00045-A/2] －7－
a) The surge suppressor limits the surge voltage generating from
the solenoid valve, which reaches several hundred volts, to a
low voltage level bearable for output contacts. This function
may be insufficient for some output circuits and the voltage may
cause breakage or malfunction. Check the surge voltage
limitation level of the solenoid valve in your circuit, the dielectric
voltage and circuit configuration of the output devices and the
delay for recovery to check for serviceability. If necessary, install
another measures against surges. The MN3Q0 and MT3Q0
Series solenoid valves equipped with a surge suppressor
suppress the terminal-to-terminal reverse voltage surge
generating upon shutoff, to the level shown in the table below.
b) If the output unit is of an NPN type, the output transistor is
susceptible to the sum of the voltage specified in the table
above and the source voltage. Install a contact protection
circuit.
PERIODIC INSPECTION (Section 6.1)
Before providing a maintenance service, cut the power and the
supply of compressed air and confirm the absence of residual
pressure.
yThe above is required to ensure safety.
Regularly perform the daily and periodic inspections to correctly
maintain product performance.
yIf the product is not correctly maintained, product performance
may deteriorate dramatically, resulting in a shorter service life,
fractures of components, and malfunctions.
！
CAUTION :
！
WARNING :
In case of 24VDC About 47V
Solenoid valve side
Programmable
controller side
<Example 1 of output transistor protection circuit>
<Example 2 of output transistor protection circuit>
Solenoid valve side
Programmable
controller side

Created 2011.11.30
Revised 2013.05.09
－8－
INDEX
Block Manifold
MN3Q0, MT3Q0 Series
Manual No. SM-P00045-A
1. PRODUCT ·················································································9
2. INTERNATIONAL SYSTEM OF UNITS (SI)
AND PORT INDICATION
2.1 Port Indication ···································································11
2.2 Conversion between International System
of Units (SI) and Conventional Units·································11
3. UNPACKING············································································12
4. INSTALLATION
4.1 Environment ······································································13
4.2 Installation ·········································································14
4.3 Piping ················································································16
4.4 Wiring ················································································20
5. OPERATING RECOMMENDATION
5.1 Operation···········································································30
5.2 Manual override·································································31
5.3 Air Quality··········································································32
5.4 Electric circuits ··································································34
6. MAINTENANCE
6.1 Periodic Inspection ····························································37
6.2 Disassembling and Reassembling ····································38
7. TROUBLESHOOTING ·····························································45
8. PRODUCT SPECIFICATIONS AND HOW TO ORDER
8.1 Product Specifications·······················································46
8.2 How to Order ·····································································48

[SM-P00045-A/2] －9－
PRODUCT
1
1. PRODUCT
①Valve block
②Set screw
There are two screw for wiring block and end block, securing the entire manifold to the DIN
rail.
③Wiring block
The block has a built-in printed circuit board.
④Mounting rail (DIN rail)
⑤End retainer
It is temporarily fixed to the wiring block and the end block.
⑥End block
Located opposite the wiring block, the end block secures the entire manifold to the DIN rail. It
has a function of common supply/exhaust flow plugging.
⑦Electric cover
The electricity indicator lamp comes on inside the cover when the solenoid is energized. The
“a” solenoid and the “b” solenoid are red and green, respectively, when they are lighted.
⑧Manual override
⑨Supply/exhaust block
⑩Push-in fitting
The joint is a replaceable cartridge push-in type.
① Valve block
② Set screw
③ Wiring block
④ Mounting rail
(DIN rail)
⑤ End retainer
⑥ End block
⑦ Electric cover
⑧ Manual override
⑨ Supply/exhaust block
⑩ Push-in fitting

[SM-P00045-A/2]
－10－
PRODUCT
1
●D sub-connector type (T30*, T30*R) ●Flat cable type (T5*, T5*R)
⑪ D-sub 25-pin connector
Control terminals of the manifold solenoid valve are integrated.
⑫Lock screw (M2.6)
The screw is used to secure the connectors.
⑬Flat cable connector
Control terminals of the manifold solenoid valve are integrated.
Note: For details of manifold configuration, refer to page 46 and the following pages.
⑪
⑫
⑬

[SM-P00045-A/2] －11－
SI UNIT
2
2. INTERNATIONAL SYSTEM OF UNITS (SI) AND PORT INDICATION
2.1 Port Indication
Each piping port is marked with ISO and JIS conformable piping port indication codes like 1P
and 3R.
Application ISO JIS
Supply port 1 P
Output port 2 (A) (Note 1)
Exhaust port 3 R
Note 1: The output ports of this solenoid valve are indicated
“2a” for a side and “2b” for b side.
2.2 Conversion between International System of Units (SI) and Conventional Units
In this manual, values are expressed using the International System of Units (SI).
Use the table below to convert them into values expressed in conventional units.
Table of conversion between SI units and conventional units
(The values printed in Bolds fonts are values given in the International System of Units (SI)):
zForce
N Dyn kgf
1 1×1051.01972×10-1
1×10-5 1 1.01972×10-6
9.80665 9.80665×1051
zStress
Pa or N/m2MPa or /mm2kgf/mm2kgf/cm2
1 1×10-6 1.01972×10-7 1.01972×10-5
1×1061 1.01972×10-1 1.01972×10
9.80665×1069.80665 1 1×102
9.80665×1049.80665×10-2 1×10-2 1
Note: 1Pa=1N/m2, 1MPa=1N/mm2
zPressure
Pa kPa MPa bar kgf/cm2atm mmH2O mmHg or Torr
1 1×10-3 1×10-6 1×10-5 1.01972×10-5 9.86923×10-6 1.01972×10-1 7.50062×10-3
1×1031 1×10-3 1×10-2 1.01972×10-2 9.86923×10-3 1.01972×1027.50062
1×1061×1031 1×10 1.01972×10 9.86923 1.01972×1057.50062×103
1×1051×1021×10-1 1 1.01972 9.86923×10-1 1.01972×1047.50062×102
9.80665×1049.80665×10 9.80665×10-2 9.80665×10-1 1 9.67841×10-1 1×1047.35559×102
1.01325×1051.01325×1021.01325×10-1 1.01325 1.01323 1 1.03323×1047.60000×102
9.80665 9.80665×10-3 9.80665×10-6 9.80665×10-5 1×10-4 9.67841×10-5 1 7.35559×10-2
1.33322×1021.33322×10-1 1.33322×10-4 1.33322×10-3 1.35951×10-3 1.31579×10-3 1.35951×10 1
Note: 1Pa=1N/m2
Example (converting a pressure value):
1kgf/cm2→ 0.980665MPa 1MPa → 1.01972×10kgf/cm2

[SM-P00045-A/2]
－12－
UNPACKING
3
3. UNPACKING
Bags containing solenoid valves should be opened only when you
are ready to connect the valves to the pipes immediately afterward.
yIf bags are opened before the valves are ready to be connected to
the pipes, the entry of foreign matter from the piping ports could
cause the solenoid valves to fail or malfunction.
a) Check the model number imprinted on the product to make sure that the product you
received is exactly the product you ordered.
b) Check the exterior of the product for any damage.
c) Before using the product, read the supplied documentation.
！
CAUTION :

[SM-P00045-A/2] －13－
INSTALLATION
4
4. INSTALLATION
If you have to use the product under conditions that are different
from the specified conditions or if you intend to use the product for
a special application, be sure to consult us about the product
specifications before using the product.
4.1 Environment
a) In a dusty environment, foreign matter may enter even through
the exhaust port.
yForeign matter may go into the inside of a solenoid valve by the
direction of an exhaust port, which may cause inhalation of foreign
matter near the exhaust port. Attach a silencer to the exhaust port
or have the exhaust port face downward.
b) Keep the solenoid valve system dry. Take care to avoid direct
contact with dripping water or splashes of cutting oil.
yIf the solenoid valve system is wet by a direct contact with water or
cutting oil, an electrical leak or burnt solenoid coils may result.
Protect the solenoid valve system by using a cover or by installing
it inside a paneled casing. If the cylinder rod is splashed with
cutting oil, the oil may penetrate through the cylinder into the
secondary side piping of the solenoid valve. This must be
prevented to avoid malfunctions.
c) The coils will produce heat.
yParticularly if the solenoid valve system is installed in a control
board or if the solenoid coils need to be energized for a long time,
consider providing sufficient ventilation to release the heat. The
coils can get very hot.
d) Do not use the solenoid valve system in an atmosphere that
includes a corrosive gas or solvent vapors.
yDo not use the solenoid valve system in an atmosphere that
includes a corrosive gas such as the sulfur dioxide gas or in an
atmosphere that includes solvent vapors.
e) Vibration resistance and shock resistance
yDo not subject the solenoid valve system to vibrations 50m/s2or
stronger or shocks 300m/s2or stronger.
f) Avoid using the solenoid valve system in a humid environment
because the humidity is likely to cause condensation with a
change in the temperature.
g) Do not use the normal type solenoid valves for an application
that requires conformity with explosion-proof specifications.
Choose explosion-proof solenoid valves instead.
h) The packing and gaskets may deteriorate sooner than usual if
used in an atmosphere with a higher than normal density of
ozone (for example, the atmosphere near a beach or in an area
with frequent thunderstorms).
i）There is no resistance to surges caused by overvoltage from
switching and lightning transients(CE Marking :IEC61000-4-5).
Please take measures against surges on the equipment side.
！
WARNING :
！
CAUTION :

[SM-P00045-A/2]
－14－
INSTALLATION
4
4.2 Installation
a) When installing a solenoid valve unit, never attempt to hold it in
position by means of the pipes connected to it.
yMount the solenoid valve by applying the mounting screws and/or
mounting plate to the solenoid valve.
b) Tighten the screws with proper torque. If the assembly or
tightening is not conducted properly, it may cause some air
leakage, falling-off of products, screw damaging or deform of
DIN rail.
If the manifold weights more than 1 kg, or when using in an envi-
ronment with vibration or shock, fix the DIN rail onto the surface at
50 to 100mm spacing.
4.2.1 A work space for installation, removal, wiring, and piping operations should be pro-
vided around the installed solenoid valve system.
4.2.2 Installation using
Note, however, that if the system is not properly mounted it may fall and break the manifold. If
the manifold is to be used in an environment where it can be subjected to vibrations and
shocks, secure the DIN rail to the mounting surface by applying screws at intervals of 50 to
100mm, and check that it is securely mounted before using the manifold.
●DIN rail mounting (MN3Q0 Series)
1. Set the jaw of the retainer on DIN rail
in the order of ①and ②.
2. Push the retainer in ③direction.
3. Hold it down so there is no gap
between the blocks and tighten the
DIN rail set screw.
(Tightening torque 1.4±0.2N･m)
①
②
set screw
+screwdriver
！
CAUTION :
！
WARNING :
③
Retainer

[SM-P00045-A/2] －15－
INSTALLATION
4
●Direct mounting (MT3Q0 Series)
Tighten these screws through the
attaching holes (2 locations).
Attaching holes
(Φ5.2)

[SM-P00045-A/2]
－16－
INSTALLATION
4
4.3 Piping
a) Observe the recommended tightening torque when connecting
pipes.
yObserving the recommended tightening torque prevents air
leakage and damage to the screw threads. To prevent damage to
the screw threads, first use your hand to lightly tighten the screw
and then use a tool to tighten the screw to the recommended
torque.
b) Make sure that the pipes will not be disconnected at the joints
by mechanical movements, vibrations or tension.
yIf the exhaust piping of the pneumatic circuit is disconnected, the
actuator speed control is disabled.
yIf the above happens to a chuck holding mechanism, the chuck
will open. The inadvertent opening of the chuck may cause a
serious accident.
c) When supplying the compressed air for the first time after
completing the piping, be sure to check every joint in the piping
for air leakage.
d) When supplying the compressed air for the first time after
completing the piping, increase the air pressure gradually but
never introduce a highly-pressurized air suddenly.
yA sudden introduction of a highly-pressurized air may disconnect
pipes at joints and/or cause the tubes to jump around, any of
which may cause an injury.
e) Do not decrease the inside diameter of the piping from any of
the solenoid valve exhaust ports to a diameter less than the
exhaust pipe connecting port size.
yNormal operation of the actuator depends on the smoothness of
the exhaust flow. With a manifold system, a restriction to the
exhaust flow may prevent normal operation of other solenoid
valves.
f) Removal of foreign matter
yRust and other foreign matter in the pneumatic circuit may cause a
malfunction or leakage from the valve seat. Insert a filter
(maximum allowable particle size 5 μm or less) immediately
upstream of the solenoid valve.
g) Air supply
yDo not restrict the flow of air through the air supply piping. With a
manifold system with multiple stations, a drop in the air supply
pressure may cause trouble through a delay in the operation
timing.
Tightening torque
Joint screw Tightening torque N･m
M3 0.3 to 0.6
M5 1.0 to 1.5
Rc1/8 3 to 5
！
CAUTION :

[SM-P00045-A/2] －17－
INSTALLATION
4
4.3.1 Seal material
When using seal material, take care to avoid getting it in the pipes or overflowing on the
exterior surface of the pipes.
When applying fluororesin sealing tape to the screw threads, wind the tape two or three times
around the threads but leave the one or two threads at the pipe end uncovered. Firmly press
the tape against the threads using the tip of your fingernail. When applying liquid type seal
material, apply the material to all the threads except one or two threads at the pipe end and
take care not to apply too much of it.
Never apply the seal material to the female threads in the device side piping port.
4.3.2 Flushing
Before connecting pipes, flush the interiors of the tubes, solenoid valves, and connected
devices to remove foreign matter.
4.3.3 M3, M5 joint
M3 and M5 joints are sealed using a gasket (Model No. for the gasket only: FGS). Do not
retighten the joint screw when pressure is generated in the pneumatic circuit. Design and
construct the piping system in such a way that the valves may be removed and reinstalled if a
trouble should happen.
4.3.4 Exhaust port
Minimize the restriction to the flow of the exhaust air because such restriction may cause a
delay in the cylinder response. If such a delay happens, the speed needs to be adjusted
between the cylinder and solenoid valve.
(Correct) (Incorrect) (Correct) (Incorrect)
●Seal Tape ●Sealant (Paste or liquid)
Solid
liquid
sealan
t
Solid
liquid
sealant

[SM-P00045-A/2]
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INSTALLATION
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4.3.5 Pipe connections
(1) Tubes to be used
For use with solenoid valves with push-in fitting, select tubes of the type specified by us:
Soft nylon tubes (F-1500 Series)
Urethane tubes (U-9500 Series)
Note: For Ø1.8 push-in fitting (C18), use UP-9402 (urethane).
(2) For installation at a site that has spatters in the air, select incombustible tubes or metal
pipes.
(3) When combining a spiral tube with a standard push-in fitting, fix the tube origin using a hose
band. Otherwise the rotation of the tube will decrease the efficiency of the clamping.
For use in a high-temperature atmosphere, select fastener joints instead of push-in fitting.
(4) When selecting from tubes commercially available, carefully study the accuracy of the outside
diameter as well as the wall thickness and the hardness. The hardness of an urethane tube
should be 93°C or more (as measured by a rubber hardness meter).
With a tube that does not have a sufficient accuracy of the outside diameter or the specified
hardness, a decrease in the chucking force may cause disconnection or difficulty in inserting.
Tube dimensions
Inside diameter mm
Outside diameter
mm Nylon Urethane
φ1.8 - φ1.2
φ3 - φ2
φ4 φ2.5 φ2
φ6 φ4 φ4
φ8 φ5.7 φ5
φ10 φ7.2 φ6.5
(5) Minimum bending radius of tubes
Observe the minimum bending radius of tubes. Neglecting the minimum bending radius may
cause disconnection or leaks.
Minimum bending radius mm
Tube bore Nylon Urethane
φ1.8 - 4
φ3 - 8
φ4 10 10
φ6 20 20
φ8 30 30
φ10 40 40
(6) Cutting a tube
To cut a tube, use a tube cutter to cut the tube perpendicularly to the length of the tube.
Inserting an obliquely cut end of a tube may cause air leakage.
Outside diameter allowance
Soft or hard nylon ±0.1mm
Urethane φ1.8, φ3 ±0.1mm
Urethane φ4, φ6 +0.1mm
-0.15mm
Urethane φ8, φ10 +0.1mm
-0.2mm

[SM-P00045-A/2] －19－
INSTALLATION
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(7) Tube connections
Do not bend a tube immediately at where it is connected to the joint but lead it out straight
from the end of the joint for a length equal to or greater than the outside diameter of the tube.
The tension applied sideways through the tube should not exceed 40N (about 5N for C18,
CL18 and CLL18).
(8) Blank plug to be used
For use with a solenoid valve with push in fitting, select the blank plug specified by us:
Blank plug (PG-P2-B) : Ø1.8 push-in fitting
(N4E00-JOINT-PP3MW) : Ø3 push-in fitting
(GWP4-B) : Ø4 push-in fitting