Brochure
Table Of Contents
- AC, Modular F.R.L. Units- Features
- How to Order: AC20-A to AC40-A, Air Filter+Regulator+Lubricator
- How to Order: AC20A-A to AC40A-A, Filter Regulator+Lubricator
- How to Order: AC20B-A to AC40B-A, Air Filter+Regulator
- How to Order: AC20C-A to AC40C-A, Air Filter+Mist Separator+Regulator
- How to Order: AC20D-A to AC40D-A, Filter Regulator+Mist Separator
- Options/Attachments
- Accessories
 
- AF/AFM/AFD, Modular Type Air Filters
- AR, Modular Type Regulators
- AL, Modular Type Lubricators
- AW, Modular Type Filter Regulators
- Safety Instructions
Specific Product Precautions
Lock 
button
1.  Although  exhaust  of  the  residual  pressure  to  the  inlet 
side is possible when eliminating the inlet pressure, ex-
haust is not possible when the set pressure is 0.15 MPa 
or less. Use the regulator with backflow function.
2. The  standard bowl  for the  air  filter, filter  regulator, 
and lubricator, as well as the sight dome for the lu-
bricator and bowl guard are made of polycarbonate. 
Do not use in an environment where they are exposed 
to or come in contact with organic solvents, chemi-
cals, cutting oil, synthetic oil, alkali, and thread lock 
solutions.
Maintenance
1. Replace the element every 2 years or when the pressure 
drop  becomes  0.1 MPa,  whichever comes  first, to  pre-
vent damage to the element.
Warning
Mounting and Adjustment
1. Set the regulator while verifying the displayed values of 
the inlet and outlet pressure gauges. Turning the regula-
tor knob excessively can  cause  damage to the internal 
parts.
2. Do not use tools on the pressure regulator knob as this 
may cause damage. It must be operated manually.
Warning
Orange 
mark
Mounting and Adjustment
1. Be sure to unlock the knob before 
adjusting  the  pressure  and  lock  it 
after  setting  the  pressure.  Failure 
to follow this procedure can cause 
damage to the knob and the outlet 
pressure may fluctuate.
•Pullthepressureregulatorknob
to unlock. (You can visually verify 
this  with  the  “orange  mark”  that 
appears in the gap.)
•Push the pressure regulator knob 
to  lock.  When  the  knob  is  not 
easily locked, turn it left and right 
a little and then push it (when the 
knob is locked, the “orange mark”, 
i.e., the gap will disappear).
2.  Pulsation  will  be  generated  when 
the  difference  between  the  inlet 
and the outlet pressure is large. In 
this case, reduce the pressure dif-
ference between the inlet and the 
outlet.  Consult  SMC  if  the  pulsa-
tion problem is not resolved.
3. When the bowl is  installed,  install 
them so  that  the lock button  lines 
up to the groove of the front (or the 
back) of the body to avoid drop or 
damage of the bowl.
Caution
Warning
Design / Selection
Acid
Alkaline
Inorganic 
salts
Chlorine 
solvents
Aromatic 
series
Ketone
Alcohol
Oil
Ester
Ether
Amino
Other
Chemical nameType
Application examples
Material
Polycarbonate
Acid washing liquid 
for metals
Degreasing of metals 
Industrial salts
Water-soluble cutting oil
Cleansing liquid 
for metals 
Printing ink Dilution
Coatings 
Dry cleaning
Photographic film 
Dry cleaning 
Textile industries
Antifreeze
Adhesives
Synthetic oil
Anti-rust additives
Brake oil additives
Cutting oil
Brake oil additives
Rubber accelerato
Hydrochloric acid
Sulfuric acid, Phosphoric acid
Chromic acid
Sodium hydroxide (Caustic soda)
Potash
Calcium hydroxide (Slack lime)
Ammonia water
Carbonate of soda
Sodium sulfide
Sulfate of potash
Sulfate of soda
Carbon tetrachloride
Chloroform
Ethylene chloride
Methylene chloride
Benzene
Toluene
Paint thinner
Acetone
Methyl ethyl ketone
Cyclohexane
Ethyl alcohol
IPA
Methyl alcohol
Gasoline
Kerosene
Phthalic acid dimethyl
Phthalic acid dimethyl
Acetic acid
Methyl ether
Ethyl ether
Methyl amino
Thread-lock fluid
Seawater
Leak tester
 : Some effects may occur  : Effects will occur
—
—
—
Effects of atmosphere of organic solvents and chemicals, and 
where these elements are likely to adhere to the equipment.
Chemical data for substances causing degradation (Reference)
Filter Regulator Series AW20-A to AW40-A
Be sure to read before handling. Refer to back cover for Safety Instructions, “Handling Precautions for SMC 
Products” (M-E03-3) and the Operation Manual for F.R.L. Precautions. 
Please download it via our website, http://www.smcworld.com
62
AC
AF+AR+ALAW+ALAF+ARAF+AFM+ARAW+AFM
AF
AFM / AFD
ARALAW Attachment










