PISCO Air preparation Series User manual

http://www.pisco.co.jphttp://www.pisco.co.jp
176
ACTUATOR
PLARAILCHAIN
HARMO
ROBOT PARTS
In-line Filter Dry Unit
Filter and Regulator Unit
Small Type Dryer
AIR
PREPARATION
In-line Filter of Easy Maintenance
Positive-NegativePressureUnionFilter
●Keeping the same usability with vacuum filter “VFU Series”
and usable with positive pressure.
●Suitable as pre-filter in positive pressure system.
●
Element can be replaced without any tool, easy maintenance
●Positive-Negative Pressure Union Filter of Copper alloy free
specification is available for the field requiring "No copper
alloy" and "Low level ozone resistance".
Copper
alloyfree
Available

Positive-Negative Pressure Union Filter
177
MPa
0
0.5
1 Air preparation Series
In-line FilterDry Unit
Filter and Regulator Unit
Small Type Dryer SOLENOID
VALVE
AIR
PREPALATION
■ Model Designation (Example)
SFU 1 44
Positive-Negative Pressure Union Filter
①
Filter Size ②
IN & OUT Tube Dia.
① Filter Size
■ Specifi cations
Type SFU1 SFU2 SFU3
Fluid Medium Air
Max. Operating Pressure 1MPa (at 20℃) ( ※1)
Vacuum Operating Pressure -100kPa
Pressure Resistance 1.5MPa
Filtering Accuracy 5µm
Operating Temp. Range 0～50℃(No freezing)
Filter Area 4.7cm27.5cm212.7cm2
*1. Max. operating pressure represents the value at 20℃. When the product is used in other temperature range, refer to “Chart of
Operationg Temperature & Max. Operationg Pressure”below.
*2. When the filter is operated under a high temperature due to an adiabatic compression, refer to “Chart of Operationg
Temperature & Max. Operationg Pressure”and use the producut under the condition where the environmental and product
temperature shall not be exceeded operating temperature.
③
Holder
③ Holder
No Code：With Holder
NH：Without Holder
Code 123
Filter Area(cm
2
) 4.7 7. 5 12.7
② IN & OUT Tube Dia.
Code 44 66 88 1010
Tube O.D.(mm)
ø4 ø6 ø8 ø10
Applied Filter Size 1, 2 3
■ Chart of Operationg Temperature & Max. Operationg Pressure
Max. Operating Pressure (MPa)
Operating Temp. (℃)
0
0
0.2
0.4
0.6
0.8
1.0
1.2
10 20 30 40 50
④
Material Option
④ Material Option
No Code：Standard specification
-S3：Copper alloy free specification

http://www.pisco.co.jphttp://www.pisco.co.jp
178
ACTUATOR
PLARAILCHAIN
HARMO
ROBOT PARTS
In-line Filter Dry Unit
Filter and Regulator Unit
Small Type Dryer
AIR
PREPARATION
■ Construction
Guide Ring ( ①Nickel-plated brass)
( ②Special stainless steel *)
* Corrosion resistance equivalent to SUS303
Plastic Body B (PBT)
Filter Element (PVF)
Filter Cover (PCTG)
Release Ring (POM)
Plastic Body A (PBT)
O-ring ( ①NBR)
( ②HNBR)
Elastic Sleeve (①NBR)
( ②HNBR)
Detailed Safety Instructions
Before using PISCO products, be sure to read “Safety Instructions” and “Safety Instruction
Manual” on page 17-21 and Common Safety Instructions for In-line Filter” on page 175.
Lock Claws (Stainless Steel)
Tube
Fixing Holder (POM)
Slide Lock (POM)
Warning
1. Implement periodic maintenances for the filter element. There is a risk of impairing the performance or
causing troubles by the clogging. Thoroughly read and understand the instructions of replacing elements
or removing dust in this catalog. Make sure to release the residual pressure completely in the system
before the maintenance.
2. Avoid a tensile strength, twisting, bending, falling and an excessive force on products. Otherwise, there is
a risk of damaging to products.
3. The filter's clear cover is made of PCTG. Avoid using the product under the einvironment where the
following chemical substance is contained in the ambient air, or either felt in the air or the chemical
substance can attach to the filter itself.
●Table Chemical list
Chemical Name
Thinner Cyclohexane
Carbon tetrachloride Trichloroethylene
Chloroform Sulfuric acid
Acetate ester Lactic acid
Aniline Soluble cutting oil (alkaline)
* There can be other chemicals that cannot be used in the same environment. For specific applications and/or chemical(s),
it is recommended to contact our sales representative.
4. Make sure the slide lock is in the lock position before operation. If a fitting part is rotated or an excessive
force is applied on the slide lock during the lock is on, there is a risk to damage the slide lock which may
result in separating the fitting part and the filter cover and causing injuries.
5. The max. operation pressure of the filter differs according to the operating temperature (operating ambient
temprature). Make sure to check “Chart of Operationg Temperature & Max. Operationg Pressure”and
operate the product within the limits.
①Standard specification ②Copper alloy free specification.

Positive-Negative Pressure Union Filter
179
MPa
0
0.5
1 Air preparation Series
In-line FilterDry Unit
Filter and Regulator Unit
Small Type Dryer SOLENOID
VALVE
AIR
PREPALATION
■ How to insert and disconnect
1. How to insert and disconnect tubes
①Tube installation
For Positive-Negative Pressure Union Filter (Filter with a built-in tube fitting
inside), insert a Push-In Fitting until it touches to the tube end which makes the
lock-claws bite the tube to fix and the elastic sleeve seal around the tube.
Refer to “2. Instructions for Tube Installation”under “Common Safety
Instructions for Fittings”when installing a tube fitting.
②Tube disconnection
The tube is disconnected by pushing the release-ring which releases the lock-
claws.
Make sure to stop air supply before the tube disconnection.
2. How to tighten screw
①Tightening screw
Use two fixing holes on the holder and the following screws to fix the product.
(Refer to the dimensional drawings of the hole pitch)
Fixing screws for SFU1: M3 countersunk screw and for
▲
M4 screw
(Figure in case of SFU2&3)
Caution
1. Before connecting the tubes and installing the filter, make sure of the air flow direction. The specified
performance cannot be attained if the filter is placed in the wrong direction.
2. Make sure that the casing is properly fixed and there is no leak after the dust is removed and/or the
element is replaced.
3. When used in a circuit where the vacuum and the vacuum breaking air is interchangeably applied, extra
attention is required since the dust removed by the filter element can be discharged by the vacuum
breaking air.
4. Make sure that the O-ring is not damaged at each overhauling or reassembly. Using a damaged O-ring
can cause leak and/or other function failure.

http://www.pisco.co.jphttp://www.pisco.co.jp
180
ACTUATOR
PLARAILCHAIN
HARMO
ROBOT PARTS
In-line Filter Dry Unit
Filter and Regulator Unit
Small Type Dryer
AIR
PREPARATION
CAD data is available at PISCO website.
CAD
3D CAD data is available at PISCO website.
CAD
3D
■ Chart of Pressure Loss Characteristics
Unit：mm
Model Code
Tube O.D.
øD C B1 B2 L1 L2 L3 L4 L5 L6 L7 L8 L9
øP1 øP2
X Y T
Filter Area
(cm²)
Weight
(g)
SFU1-44 ③④ 411
60.1 13.5 17.9 9 22.65 27.45 10 26.6 11 8.2 6.2 13 ‒ 7.8 9.8 2 4.7 8
SFU1-66 ③④ 6
11.6 64.4 13.5 17.9 9 25.05 29.35 10 26.6 11 10.1 6.2 13 ‒ 9.8 11.8 2 8.5
SFU2-44 ③④ 4
14.9 61.1 24.3 33 20 20.2 30.9 10 33 18.2 9.2 5 20 9.9 ‒ ‒ 3 7.5 20.5
SFU2-66 ③④ 616
65.3 24.3 33 20 23.95 31.35 10 33 18.2 9.7 5 20 11.8 ‒ ‒ 3 21.5
SFU3-66 ③④ 617
71.9 28.3 39.5 24 19.5 38.4 14 39.5 20.2 11.8 8.5 25 11.8 ‒ ‒ 3
12.7
34.5
SFU3-88 ③④ 8
17.9 71.1 28.3 39.5 24 20.75 36.35 14 39.5 20.2 9.7 8.5 25 13.8 ‒ ‒ 3 33.5
SFU3-1010 ③④ 10
19.2 77.3 28.3 39.5 24 26.65 36.65 14 39.5 20.2 10 8.5 25 16.8 ‒ ‒ 3 39
*1. Fill in Code③with “NH”for “Without Holder”.
*2. Fill in Code ④with “-S3”for “Copper alloy free specification”.
*3. CAD file name is the same as the model code.
Positive-NegativePressureUnionFilter
SFU
compliant
2-C
4-L9
OUT IN
L8
L7
B2
L6
L5
B1
L3 L4
2-Y øP1 2-øD
2-X
TL1
L2
Fixing holes for M3 countersunk screw
OUT IN
2-C
L6
L5 L4
4-L9 L8
L3
L7
B2
B1
øP1
L2
L1
T
2-øP2
2-øD
2-ø4.5
SFU1 SFU2&3
CAD
CAD
3D
0
0
0.02
0.04
0.06
0.08
0.10
0.12
40 6020 80 100 120140 160180 200
SFU1-44
Pressure Drop Amount (MPa)
Flow Rate (l/min(ANR))
0
0
0.02
0.04
0.06
0.08
0.10
0.12
50 100 150 200 300250
SFU1-66
Pressure Drop Amount (MPa)
Flow Rate (l/min(ANR))
0
0
0.02
0.04
0.06
0.08
0.10
0.12
40 6020 80 100120 140160180 200
SFU2-44
Pressure Drop Amount (MPa)
Flow Rate (l/min(ANR))
0
0
0.02
0.04
0.06
0.08
0.10
0.12
50 100 150 200 400250 300 350
SFU2-66
Pressure Drop Amount (MPa)
Flow Rate (l/min(ANR))
SFU3-66
Pressure Drop Amount (MPa)
Flow Rate (l/min(ANR))
0
0
0.02
0.04
0.06
0.08
0.10
0.12
200 400 600 800
12001000
SFU3-1010
Pressure Drop Amount (MPa)
Flow Rate (l/min(ANR))
0
0
0.02
0.04
0.06
0.08
0.10
0.12
100 50 150 200 250 300 350 400 500450 0 200100 300 400 500 600 700 800 1000900
SFU3-88
Pressure Drop Amount (MPa)
Flow Rate (l/min(ANR))
0
0.02
0.04
0.06
0.08
0.10
0.12
0.1MPa
0.3MPa
0.5MPa
0.7MPa
0.9MPa
0.1MPa
0.3MPa
0.5MPa
0.7MPa
0.9MPa
0.1MPa
0.3MPa
0.5MPa
0.7MPa
0.9MPa
0.1MPa
0.3MPa
0.5MPa
0.7MPa
0.9MPa
0.1MPa
0.3MPa
0.5MPa
0.7MPa
0.9MPa
0.1MPa
0.3MPa
0.5MPa
0.7MPa
0.9MPa
0.1MPa
0.3MPa
0.5MPa
0.7MPa
0.9MPa
Copper alloy free
Selectable

Positive-Negative Pressure Union Filter
181
MPa
0
0.5
1 Air preparation Series
In-line FilterDry Unit
Filter and Regulator Unit
Small Type Dryer SOLENOID
VALVE
AIR
PREPALATION
■ Replacement of Filter Element
①Release the residual pressure inside the filter and make the inside pressure at the atmospheric pressure
level.
②Unlock the red slide lock by moving it to the opposite direction of the lock arrow mark.
③Turn the fitting part 180°counteclockwise.
④Take off the fitting part from the filter cover and replace elements.
⑤Remove dust inside of the filter cover by air blowing.
⑥Place a filter on the joint part of filter element. Insert the fitting part and turn it clockwise until it stops.
⑦Make sure the lock position arrow on the fitting part and that on the filter cover meet face to face, then push
up the slide lock to the arrowed direction. Check if the fitting part is fixed on the filter cover properly.
Joint Part of Filter Element
Filter Element
Lock Position Arrow
Lock Position Arrow
Slide Lock
②
③④
④、⑥
Holder
⑦
⑥
Model designation of Replacement Parts
■Filter Element
Code of Positive-Negative
Pressure Union Filter
Code of Filter Element
SFU1-□□-□VFE025B01
SFU2-□□-□SFE2
SFU3-□□-□SFE3
■Holder
Code of Positive-Negative
Pressure Union Filter
Code of Holder
SFU1-□□-□SFUH010P01
SFU2-□□-□VFUH2
SFU3-□□-□VFUH3

17
Safety Instructions
SAFETY Instructions
Warning
This safety instructions aim to prevent personal injury and damage to
properties by requiring proper use of PISCO products.
Be certain to follow ISO 4414 and JIS B 8370
ISO 4414：Pneumatic fluid power…Recomendations for the application of equipment
to transmission and control systems.
JIS B 8370：
General rules and safety requirements for systems and their components.
This safety instructions is classified into “Danger”, “Warning” and “Caution” depending on
the degree of danger or damages caused by improper use of PISCO products.
1. Selection of pneumatic products
① A user who is a pneumatic system designer or has sufficient experience
and technical expertise should select PISCO products.
② Due to wide variety of operating conditions and applications for PISCO
products, carry out the analysis and evaluation on PISCO products.
The pneumatic system designer is solely responsible for assuring that
the user's requirements are met and that the application presents no
health or safety hazards. All designers are required to fully understand
the specifications of PISCO products and constitute all systems based
on the latest catalog or information, considering any malfunctions.
2. Handle the pneumatic equipment with enough knowledge and experience
① Improper use of compressed air is dangerous. Assembly, operation
and maintenance of machines using pneumatic equipment should be
conducted by a person with enough knowledge and experience.
3. Do not operate machine / equipment or remove pneumatic equipment until
safety is confirmed.
① Make sure that preventive measures against falling work-pieces or
sudden movements of machine are completed before inspection or
maintenance of these machine.
② Make sure the above preventive measures are completed. A
compressed air supply and the power supply to the machine must be
off, and also the compressed air in the systems must be exhausted.
③ Restart the machines with care after ensuring to take all preventive
measures against sudden movements.
Danger
Hazardous conditions. It can cause death or serious
personal injury.
Warning
Hazardous conditions depending on usages. Improper use of
PISCO products can cause death or serious personal injury.
Caution
Hazardous conditions depending on usages. Improper use of PISCO
products can cause personal injury or damages to properties.
※. This safety instructions are subject to change without notice.

http://www.pisco.co.jp
http://www.pisco.co.jp
18
Disclaimer
1. PISCO does not take any responsibility for any incidental or indirect
loss, such as production line stop, interruption of business, loss
of benefits, personal injury, etc., caused by any failure on use or
application of PISCO products.
2. PISCO does not take any responsibility for any loss caused by natural
disasters, res not related to PISCO products, acts by third parties, and
intentional or accidental damages of PISCO products due to incorrect
usage.
3. PISCO does not take any responsibility for any loss caused by improper
usage of PISCO products such as exceeding the specication limit or not
following the usage the published instructions and catalog allow.
4. PISCO does not take any responsibility for any loss caused by remodeling
of PISCO products, or by combinational use with non-PISCO products and
other software systems.
5. The damages caused by the defect of Pisco products shall be covered but
limited to the full amount of the PISCO products paid by the customer.

19
Safety Instructions
SAFETY INSTRUCTION MANUAL
Danger
1. Do not use PISCO products for the following applications.
① Equipment used for maintaining / handling human life and body.
② Equipment used for moving / transporting human.
③ Equipment specifically used for safety purposes.
Warning
1. Do not use PISCO products under the following conditions.
① Beyond the specifications or conditions stated in the catalog, or the instructions.
② Under the direct sunlight or outdoors.
③ Excessive vibrations and impacts.
④ Exposure / adhere to corrosive gas, inflammable gas, chemicals, seawater, water and vapor. *
＊ Some products can be used under the condition above( ④), refer to
the details of specification and condition of each product.
2. Do not disassemble or modify PISCO products, which affect the
performance, function, and basic structure of the product.
3. Turn off the power supply, stop the air supply to PISCO products, and make sure
there is no residual air pressure in the pipes before maintenance and inspection.
4. Do not touch the release-ring of push-in fitting when there is a working pressure.
The lock may be released by the physical contact, and tube may fly out or slip out.
5. Frequent switchover of compressed air may generate heat, and there is a
risk of causing burn injury.
6. Avoid any load on PISCO products, such as a tensile strength, twisting
and bending. Otherwise, there is a risk of causing damage to the products.
7. As for applications where threads or tubes swing / rotate, use Rotary
Joints, High Rotary Joints or Multi-Circuit Rotary Block only. The other
PISCO products can be damaged in these applications.
8. Use only Die Temperature Control Fitting Series, Tube Fitting Stainless SUS316
Series, Tube Fitting Stainless SUS316 Compression Fitting Series or Tube Fitting
Brass Series under the condition of over 60℃ (140°F) water or thermal oil. Other
PISCO products can be damaged by heat and hydrolysis under the condition above.
9. As for the condition required to dissipate static electricity or provide an antistatic
performance, use EG series fitting and antistatic products only, and do not use other PISCO
products. There is a risk that static electricity can cause system defects or failures.
10. Use only Fittings with a characteristic of spatter-proof such as Anti-
spatter or Brass series in a place where flame and weld spatter is
produced. There is a risk of causing fire by sparks.
11. Turn off the power supply to PISCO products, and make sure there is
no residual air pressure in the pipes and equipment before maintenance.
Follow the instructions below in order to ensure safety.
① Make sure the safety of all systems related to PISCO products before maintenance.
② Restart of operation after maintenance shall be proceeded with care after
ensuring safety of the system by preventive measures against unexpected
movements of machines and devices where pneumatic equipment is used.
③ Keep enough space for maintenance when designing a circuit.
12. Take safety measures such as providing a protection cover if there is a
risk of causing damages or fires on machine / facilities by a fluid leakage.
PISCO products are designed and manufactured for use in general industrial
machines. Be sure to read and follow the instructions below.

http://www.pisco.co.jp
http://www.pisco.co.jp
20
Caution
1. Remove dusts or drain before piping. They may get into the peripheral
machine / facilities and cause malfunction.
2. When inserting an ultra-soft tube into push-in fitting, make sure to place
an Insert Ring into the tube edge. There is a risk of causing the escape of
tube and a fluid leakage without using an Insert Ring.
3. The product incorporating NBR as seal rubber material has a risk of
malfunction caused by ozone crack. Ozone exists in high concentrations
in static elimination air, clean-room, and near the high-voltage motors,
etc. As a countermeasure, material change from NBR to HNBR or FKM is
necessary. Consult with PISCO for more information.
4. Special option “Oil-free” products may cause a very small amount of a fluid
leakage. When a fluid medium is liquid or the products are required to be
used in harsh environments, contact us for further information.
5. In case of using non-PISCO brand tubes, make sure the tolerance of the
outer tube diameter is within the limits of Table 1.
●Table 1. Tube O.D. Tolerance
mm size Nylon tube Polyurethane tube inch size Nylon tube Polyurethane tube
ø1.8mm ─ ±0.05mm ø1/8 ±0.1mm ±0.15mm
ø3mm ─ ±0.15mm ø5/32 ±0.1mm ±0.15mm
ø4mm ±0.1mm ±0.15mm ø3/16 ±0.1mm ±0.15mm
ø6mm ±0.1mm ±0.15mm ø1/4 ±0.1mm ±0.15mm
ø8mm ±0.1mm ±0.15mm ø5/16 ±0.1mm ±0.15mm
ø10mm ±0.1mm ±0.15mm ø3/8 ±0.1mm ±0.15mm
ø12mm ±0.1mm ±0.15mm ø1/2 ±0.1mm ±0.15mm
ø16mm ±0.1mm ±0.15mm ø5/8 ±0.1mm ±0.15mm
6. Instructions for Tube Insertion
① Make sure that the cut end surface of the tube is at right angle without
a scratch on the surface and deformations.
② When inserting a tube, the tube needs to be inserted fully into the push-
in fitting until the tubing edge touches the tube end of the fitting as
shown in the figure below. Otherwise, there is a risk of leakage.
Tube end
Sealing
Tube is not fully inserted up to tube end.
③ After inserting the tube, make sure it is inserted properly and not to be
disconnected by pulling it moderately.
※. When inserting tubes, Lock-claws may be hardly visible in the hole, observed
from the front face of the release-ring. But it does not mean the tube will
surely escape. Major causes of the tube escape are the followings;
①Shear drop of the lock-claws edge
②The problem of tube diameter (usually small)
Therefore, follow the above instructions from ① to ③ , even lock-claws
is hardly visible.

21
7. Instructions for Tube Disconnection
①
Make sure there is no air pressure inside of the tube, before disconnecting it.
② Push the release-ring of the push-in fitting evenly and deeply enough to
pull out the tube toward oneself. By insufficient pushing of the release-
ring, the tube may not be pulled out or damaged by scratch, and tube
shavings may remain inside of the fitting, which may cause the leakage
later.
8. Instructions for Installing a fitting
① When installing a fitting, use proper tools to tighten a hexagonal-column
or an inner hexagonal socket. When inserting a hex key into the inner
hexagonal socket of the fitting, be careful so that the tool does not
touch lock-claws. The deformation of lock-claws may result in a poor
performance of systems or an escape of the tube.
② Refer to Table 2 which shows the recommended tightening torque. Do
not exceed these limits to tighten a thread. Excessive tightening may
break the thread part or deform the gasket and cause a fluid leakage.
Tightening thread with tightening torque lower than these limits may
cause a loosened thread or a fluid leakage.
③ Adjust the tube direction while tightening thread within these limits,
since some PISCO products are not rotatable after the installation.
●Table 2: Recommended tightening torque / Sealock color / Gasket
materials
Thread type Thread size Tightening torque Sealock color Gasket materials
Metric thread
M3 ×0.5 0.7N·m
─
SUS304
NBR
M5 ×0.8 1.0 ~ 1.5N·m
M6 ×1 2 ~ 2.7N·m
M3 ×0.5 0.5 ~ 0.6N·m
POM
M5 ×0.8 1 ~ 1.5N·m
M6 ×0.75 0.8 ~ 1N·m
M8 ×0.75 1 ~ 2N·m
Taper pipe thread
R1/8 7 ~ 9N·m
White ─
R1/4 12 ~ 14N·m
R3/8 22 ~ 24N·m
R1/2 28 ~ 30N·m
Unified thread No.10-32UNF 1.0 ~ 1.5N·m─SUS304、NBR
National pipe
thread taper
1/16-27NPT 7 ~ 9N·m
White ─
1/8-27NPT 7 ~ 9N·m
1/4-18NPT 12 ~ 14N·m
3/8-18NPT 22 ~ 24N·m
1/2-14NPT 28 ~ 30N·m
※ These values may differ for some products. Refer to each specification as well.
9. Instructions for removing a fitting
① When removing a fitting, use proper tools to loosen a hexagonal-column
or an inner hex bolt.
② Remove the sealant stuck on the mating equipment. The remained
sealant may get into the peripheral equipment and cause malfunctions.
10. Arrange piping avoiding any load on fittings and tubes such as twist,
tensile, moment load, shaking and physical impact. These may cause
damages to fittings, tube deformations, bursting and the escape of tubes.
Safety Instructions

MPa
0
0.5
1 Air preparation Series
175
AIR
PREPALATION
SOLENOID
VALVE
Warning
Before selecting or using PISCO products, read the following instructions. Read
the detailed instructions for individual series.
1. Each device has its control direction. Check it in this caltalog and the mark
indicated on the product before using. Wrong control direction may cause
injuries on the operator or damage to the equipment.
2. Avoid any load such as a tensile strength, twisting, bending, falling and
an excessive force on products. Otherwise, there is a risk of damaging to
products.
3. Implement periodic maintenances for the filter element. There is a risk of
impairing the performance or causing troubles by the clogging. Thoroughly read
and understand the instructions of replacing elements or removing dust in this
catalog. Make sure to release the residual pressure completely in the system
before the maintenance.
Caution
1. Refer to “Common Safety Instructions for Fittings” for handling of fittings.
2. Make sure the direction of “IN” and “OUT” in this manual or the indication on
products when piping. Wrong direction of installation may impair the filtering
function.
3. Make sure to place the filter case properly and that there is no leakage after
removing dust or replacing elements.
Common Safety Instructions for In-line Filter