Koganei FRZB Series User manual

Catalog No.BK-E0011
FRZB Filter Regulator
Down sizing
Close side-by-side spacing
Improved operability
RoHS compliant
product
With water and fluids removal functions
NPT thread specifications
Improved knob operability and simple bowl
installation and removal
NEW VARIATION !!
NPT thread specifications PSI gauge

●❶CAUTION Read the safety precautions on page ❹ before using this product.
Improved knob operability and simple bowl installation and removal.
Improved operability and maintainability
Supports □1.181 in. integrated pressure gauges, other pressure
gauges, and pressure switches.
Pressure gauge, pressure switch
Specialized 30 series
for standalone application
FRZB30 FRZB50FRZB40
The 40 and 50 series
can be used in combination with the FRZ series
Easy-to-use water and fluids removal functions inside a compact design!
Ozone resistance specifications and NCU specifications (copper
free)Note are standard.
Supports a wide variety of environments
Improved flow rate characteristics allow a smaller configuration
(close side-by-side spacing is possible).
Down sizing
FRZB Filter Regulator
With water and fluids removal functions
Note: Excluding pressure switch and pressure gauge options.
1.378 1.575 1.969

●❷
The setting pressure range display can be changed as
desired by rotating the protrusions (two locations) clockwise
or counter clockwise.
270° swing angle
Pressure setting range
Protrusions (two places)
Pressure setting range
after change
Bowl guard (option)
□1.181 in. series integrated pressure gauge
Bowl guard option is available.
●Flexible change of the pressure setting range (the
green part) is possible. Freely changeable upper and
lower setting limits eliminate the need to remove the
front cover (the transparent plastic part) and to use
special tools.
●PSI gauge and NPT thread specifications are also
available now.
* Other pressure gauges and pressure switches
are available. See the next page for details.
●□1.181 in. integrated pressure gauge is compact with
almost nothing sticking out. Visibility is also improved
with an easy to see 270° swing angle display.
*Comparison of our FR600 and FRZB50 filter regulators.
Compact design
Improved flow rate characteristics enable a smaller
configuration.
Ｏ Ｐ Ｅ Ｎ
1.968
3.150
3.051
3.622
9.587
7.874
Regulator FRZB50
Regulator FR600
(existing product)
０
ｐ ｓ ｉ
１ ４ ５
１ ２ ０
９ ０
６ ０
３ ０
Improved knob operability
●The knob is ideally sized and shaped to turn smoothly
with a light touch for easy operation. Also, the knob
lock precision has been improved to reduce changes
in pressure settings when the knob is locked.
●
The status of the knob lock release can be checked
with the yellow caution ring.
Yellow caution ring
Shows the state of the
knob lock
Knob
Knob can be removed by
using the mounting ring.
This is effective when you
do not want the knob to be
operated.
Mounting ring
Drain cock specifications
Drain cock with fitting or auto drain types can be
selected for the drain cock specifications.
Auto drain type
NO (Normally open)
NC (Normally closed)
Drain cock with fitting

●❸
Pressure gauge, pressure switch Bracket
Panel mounting
Can select various types of pressure gauges and
pressure switches other than the □1.181 in. integrated
pressure gauge. PSI GAUGE NEW
φ1.575 in. pressure gauge
(145 psi specifications)
Pressure gauge with built-in
switches
(145 psi specifications)
φ1.575 in. stainless steel
Bourdon tube pressure gauge
(145 psi specifications)
Digital pressure switch
GS620-3W
(145 psi specifications)
φ1.575 in. stainless steel
Bourdon tube pressure gauge
(43.5 psi specifications)
φ1.575 in. pressure gauge
(43.5 psi specifications)
The brackets can be used with all sizes of the FRZB
filter regulators.
Brackets can also be used with the iB-Cyclone and
FRZ series.
A φ1.122 in. panel mounting hole can be used for all
sizes of the filter regulators.
Note: There are limitations to the mounting (installation)
orientation of the FRZB filter regulators.
Specialized
30 series
for standalone application
The 40 and 50 series
can be used in combinations
Guide to related products
Regulator
RZ30
Filter regulator
FRZ30
Regulator
RZ40
Filter regulator
FRZ50
Regulator
RZ50
Filter regulator
FRZ40
New-generation Filter Regulator
For details, see our homepage. http://www.koganei.co.jp
FRZ Series
Excellent for air lines with water and
uids already removed!
Order code G1-40-F11
G1S-40-F11
G3-40-F11
G3S-40-F11
GS1-50-F11-□-□

Safety precautions (FRZB filter regulators)
Always read these precautions carefully before use.
❹
Before selecting and using the products, please read all safety precautions carefully to ensure proper product use.
The safety precautions described below are to help you use the product safely and correctly, and to prevent injury or damage to you,
other people, and assets.
Always adhere to the following safety regulations: ISO4414 (Pneumatic fluid power - General rules and safety requirements for systems
and their components) and JIS B 8370 (General rules relating to systems).
■This product was designed and manufactured for use in general industrial machinery.
■When selecting and handling equipment, the system designer or another person with sufficient knowledge and experience should
always read the safety precautions, catalog, instruction manual and other literature before commencing operation. Improper handling
is dangerous.
■After reading the instruction manual, catalog, and other documentation, always store them in a location that allows easy availability
for reference to users of this product.
■Whenever transferring or lending the product to another person, always attach the catalog, instruction manual, and other information
to the product where they are easily visible in order to ensure that the new user can use the product safely and properly.
■The danger, warning and caution items listed under these safety precautions do not cover all possible contingencies. Read the
catalog and instruction manual carefully, and always keep safety first.
●Do not use the product for the purposes listed below:
1. Medical equipment related to maintenance or management
of human lives or bodies.
2. Machines or equipment designed for the purpose of moving
or transporting people.
3. Critical safety components in mechanical devices.
This product has not been planned or designed for purposes
that require high levels of safety. Using the product in any of
the ways described above creates the risk of loss of human
life.
●Do not use the product in locations with or near dangerous
substances such as flammable or ignitable substances.
This product is not explosion-proof. Doing so creates the risk of
ignition and fire.
●When mounting the product, always make sure they are firmly
supported and secured in place. Falling, dropping, or abnormal
operation of the product creates the risk of personal injury.
●Never attempt to modify the product. Doing so can cause
malfunctions and create the risk of personal injury, electric
shock, fire, etc.
●Never attempt inappropriate disassembly, assembly or repair
of the product relating to basic construction, or to its
performance or to functions. Doing so creates the risk of injury,
electric shock, fire, etc.
●Do not splash water on the product. Spraying it with water,
washing it, or using it under water could result in malfunction of
the product leading to injury, electric shocks, fire, etc.
●While the product is in operation, avoid touching it with your
hands or otherwise approaching too close. Also, do not attempt
to make any adjustments to internal or attached mechanisms,
or to perform any type of adjustment (disconnecting cable
connectors, adjusting pressure switches, disconnecting tubes
or sealed plugs, adjusting the product's mounting position, etc.)
while the product is in operation.
There is a risk of personal injury if the product falls or operates
abnormally.
●Because Koganei products are designed for use under a wide
variety of conditions, decisions concerning conformance with a
particular system should be made upon the careful evaluation
by the person in charge of system design.
Assurances concerning expected system performance and
safety are the responsibility of the designer who decides
system conformity. Be sure to use the latest catalogs and
technical materials to study and evaluate specification details,
to consider the possibility of machine breakdown, and to
configure a system that ensures fail-safe safety and reliability.
●Do not use the product in excess of its specification range.
Doing so creates the risk of product breakdown, loss of
function, or damage. It could also drastically reduce operating
life.
●Before supplying air or electricity to the device and before
starting operation, always conduct a safety check of the area of
machine operation. Unintentional supply of air or electricity
creates the risk of injury due to contact with moving parts.
●Do not touch terminals, switches, or other parts, while power is
turned on.
Doing so creates the risk of electric shock and malfunction.
●Do not allow the product to be thrown into fire. Doing so creates
the risk of explosion resulting in the release of toxic gases.
●Do not sit on the product, place your foot on it, or place other
objects on it.
Doing so creates the risk of injury due to tripping or the product
tipping over or falling, resulting in product damage and
abnormal, erratic, or runaway operation.
●Before conducting maintenance, inspection, repair,
replacement, or any other similar procedure, always completely
cut off the air supply and confirm that residual pressure inside
the product or in piping connected to the product is
atmospheric pressure. In particular, be aware that residual air
will still be in the compressor or storage tank.
The actuator may move abruptly if residual air pressure
remains inside the piping, causing injury.
●Use safety circuits or design a system that prevents damage to
machinery or injury to personnel when the machine is shut
down due to an emergency stop or electrical power failure.
●Before performing any kind of wiring work, be sure to turn off
power. Failure to do so creates the risk of electric shock.
●Do not allow lead wires and other cords to become damaged.
Allowing a cord to become cut, bent excessively, pulled, rolled
up, placed under heavy objects, or squeezed between two
objects creates the risk of current leaks or defective continuity
that can lead to fire, electric shock, or abnormal operation.
●Do not connect or disconnect connectors while power is turned
on.
Also, never apply unnecessary force to connectors. Doing so
creates the risk of personal injury, device damage, and electric
shock due to abnormal machine operation.
●Always check the catalog and other reference materials for
correct product wiring and piping. Improper wiring and piping
creates the risk of damage to and abnormal operation of the
actuator, etc.
●After completing wiring work, check to make sure that all
connections are correct before turning on power.
●Be careful when wiring, do not reverse the polarity of wires.
Incorrect polarity may damage the pressure switch.
●After completing piping work, check to make sure that the
circuit is correct before supplying air.
●Do not use any type of medium that is not specifically stipulated
in the specifications. Using a non-specified medium could lead
to loss of function in the short term, sudden degradation of
performance, and a reduced operating life.
●In initial operations after the equipment has been idle for 48
hours or more, or has been in storage, there is a possibility that
DANGER
Indicates situations that can be clearly predicted as dangerous.
Failure to avoid the situation creates the risk of death or serious injury.
It could also result in damage or destruction of assets.
WARNING
Indicates situations that, while not immediately dangerous, could become dangerous.
Failure to avoid the situation creates the risk of death or serious injury.
It could also result in damage or destruction of assets.
CAUTION
Indicates situations that, while not immediately dangerous, could become dangerous.
Failure to avoid the situation creates the risk of minor or semi-serious injury.
It could also result in damage or destruction of assets.
ATTENTION While there is little chance of injury, this content refers to points that should be observed for
appropriate use of the product.
The directions are ranked according to degree of potential danger or damage: "DANGER", "WARNING!", "CAUTION!", and "ATTENTION!".
DANGER
WARNING

Safety precautions (FRZB filter regulators)
❺
●Always observe the following items.
1. When using this product in pneumatic systems, always use
genuine Koganei parts or compatible parts (recommended
parts).
When conducting maintenance and repairs, always use genuine
Koganei parts or equivalent parts (recommended parts).
Always observe the prescribed methods and procedures.
2. Never attempt inappropriate disassembly or assembly of the
product relating to basic configurations, or its performance or
functions.
3. The sales of pressure gauges with PSI indications in Japan
are prohibited by the Japanese law.
Koganei shall not be held responsible for any problems that
occur as a result of these items not being properly observed.
●When considering the possibility of using this product in
situations or environments not specifically noted in the catalog
or instruction manual, or in applications where safety is an
●When mounting the product, leave room for adequate working
space around it. Failure to do so will make it more difficult to
conduct daily inspections or maintenance, which could
eventually lead to system shutdown or damage to the product.
●Whenever transporting or installing a heavy product, use a lift
or supports to securely support it, and use several people to
help lift it and take other precautions to ensure personal safety.
●Do not scratch, dent, or deform the product by climbing on it,
using it as a step, or placing objects on top of it. Doing so
creates the risk of damage to or breakage of the product,
resulting in operational shutdown or degraded performance.
●Always post an operations in progress sign for installations,
adjustments, or other operations, to avoid unintentional
supplying of air or electrical power, etc. Unintentional supplying
of air or electricity can cause electric shock or sudden
operation and may result in injury.
●While handling the product, do not subject it to extreme shocks
by hitting, dropping, or bumping it. Doing so may damage the
inside of the product, even though the outside is not damaged,
and cause it to malfunction.
●Do not short circuit the load to the pressure switch.
The pressure switch may be damaged by over-current if the
comparative output is turned on while the load is short circuited.
Example of short circuited load: The output lead wire of the
comparative output is connected directly to the power source.
●Do not bring any magnetic media or memory within one meter
[3.28 ft] of the product. There is a strong magnet inside the
product and the magnetic field of this magnet may damage the
data on the magnetic media.
●If an electric leakage occurs on the control circuit, it may cause
the product to operate unexpectedly. Protect the control circuit
from electricity leaks so that electricity leaks do not exceed the
allowance in the product specifications.
●Use the specified lubricant to lubricate sliding parts. Not doing
so leads to changes in the physical properties, deterioration of
the materials used, or reduced functionality.
●Do not block the product's vent holes. The pressure will
fluctuate if the air volume changes during operations. If the
vents are blocked the pressure balance will be disrupted,
operations will no longer be as expected resulting in injury or
damage to equipment.
●Use in extremely dry air under temperatures lower than -20°C
[-4°F] may affect the quality of the lubricating oil used. This
creates the risk of degraded performance, loss of function, or
other problems.
contacting parts may have become stuck, resulting in
equipment operation delays or in sudden movements. Before
these initial operations, always run a test to check that
operating performance is normal.
●Do not use the product in locations that are subject to direct
sunlight (ultraviolet rays); locations with high humidity and
temperature, dust, salt, or iron powder. Do not use fluids in the
product or use the product in an environment that includes
corrosive fluids such as organic solvents, phosphate ester type
hydraulic oil, sulfur dioxide, chlorine gas, freon gas, ozone,
acids, alkaline, etc. It could lead to early shutdown of some
functions, a sudden degradation of performance, and a
reduced operating life. For information about materials, see
Major Parts and Materials.
●When the device is not used for long periods (over 30 days), it
is possible that the contacting parts may have become stuck
leading to delayed operation or sudden movements, resulting in
injury. Check for proper operation a minimum of once every 30
days.
●Do not expose the main unit to an external magnetic field when
the pressure switch is operating.
It could cause erratic operation resulting in injury or damage to
the machine.
●Do not wire parallel to power lines or high-voltage lines, or
inside the same wiring conduit. The noise could cause the
pressure switch to malfunction.
●Do not use the product near the sea, in direct sunlight, near
mercury vapor lamps, or near equipment that generates ozone.
Ozone causes rubber components to deteriorate resulting in
reduced performance, or degradation or stop of functions.
●Do not use in locations where there is a heat source nearby or
that are subject to radiated heat.
Warranty and General Disclaimer
1. Warranty Period
Koganei warrants this product for a period of no more
than 180 days from the date of delivery.
2. Scope of Warranty and General Disclaimer
(1) The Koganei product warranty covers individual
products. When a product purchased from Koganei or
from an authorized Koganei distributor malfunctions
during the warranty period in a way that is attributable
to Koganei responsibility, Koganei will repair or replace
the product free of charge. Even if a product is still
within the warranty period, its operating life is
determined by its operation cycles and other factors.
Contact your nearest Koganei sales office or the
Koganei overseas department for details.
(2) Koganei shall not be held responsible for any losses or
for any damage to other machinery caused by
breakdown, loss of function, or loss of performance of
Koganei products.
(3) Koganei shall not be held responsible for any losses
due to use or storage of the product in a way that is
outside of the product specifications prescribed in
Koganei catalogs and the instruction manual, and/or
due to actions that violate the mounting, installation,
adjustment, maintenance and other safety precautions.
(4) Koganei shall not be held responsible for any losses
caused by breakdown of the product due to factors
outside the responsibility of Koganei, including but not
limited to fire, natural disaster, the actions of third
parties, and intentional actions or errors by you.
ATTENTION
CAUTION
important requirement such as in aircraft equipment,
combustion equipment, leisure equipment, safety equipment,
and other places where human life or assets may be greatly
affected, take adequate safety precautions such as allowing
plenty of margin for ratings and performance, or fail-safe
measures.
Always contact the sales department at Koganei regarding use
in such applications.
●Use a protective cover and other means to ensure that the
operating parts of mechanical devices are isolated and do not
come into direct contact with human bodies.
●Do not configure control of the actuator in a way that could
cause workpieces to fall due to power failure.
Configure control of the system to prevent workpieces and
other items from falling due to power failure or by emergency
stops of mechanical devices.
●Attach a muffler to the exhaust port.
It will reduce the noise during exhaust.
●Lock the pressure regulation knob after regulating the pressure.
●When handling the product, wear protective gloves, safety
glasses, safety shoes, and other protective clothing.
●When the product can no longer be used or is no longer
necessary, dispose of it appropriately as industrial waste.
●Pneumatic equipment can exhibit degraded performance and
function over its operating life. Always conduct daily inspections
of the pneumatic equipment, and confirm that all requisite system
functions are satisfied, to prevent accidents from happening.
●For inquiries about the product, consult your nearest Koganei
sales office or Koganei Overseas Department. The addresses
and telephone numbers are shown on the back cover of this
catalog.
Other precautions

SUP
OPEN
psi
14.5
29
43.5
58
SUP
OPEN
０
ｐ ｓ ｉ
１ ４ ５
１ ２ ０
９ ０
６ ０
３ ０
０
ｐ ｓ ｉ
１ ４ ５
１ ２ ０
９ ０
６ ０
３ ０
psi
14.5
29
43.5
58
Handling instructions and Precautions (FRZB Filter Regulators)
❻
For all FRZB Filter Regulators
●Selection
Look at the Handling Instructions and Precautions,
Specifications, Various Characteristics, Dimensions, and other
technical materials for each product to make the correct deci-
sion.
●Mounting (installation) direction, support, and securing
1. The products cannot be mounted (installed) if a bending
moment or twisting moment is applied to the product or piping.
●Preventing contamination by foreign matter
1. Remove all foreign matter, such as metal chips, cutting oil, or
dirt, from inside pipes with compressed air blow (flushing) and
thorough washing before fitting the pipes.
2. Do not allow foreign matter, such as metal chips, or sealing
tape from the piping threads, to get into the pipes when install-
ing the pipes and fittings.
●Maintenance space requirements
Assure there is sufficient space for maintenance inspections and
maintenance work.
See the dimension diagrams for each of the products regarding
the maintenance space.
●Attaching steel pipes and fittings
If steel pipes and fittings are attached to the threaded sections of
the aluminum die-cast parts of the product, tighten them to the
torque recommended in our standards.
2. Do not attach piping so that just one side is fixed as shown in
the following diagram. Support external piping separately.
Design and selection
Mounting (installation) and piping
Note
Applying bending moment or twisting moment may
damage the product.
Note
The muffler must be prepared by the user.
Note
If a product is not securely fixed in place, it may fall over, be
dropped, or operate abnormally and cause an injury.
Note
Operating the knob and the moment caused by the
OUT (secondary) side pipes may damage the product's
piping connections.
Note
It there is not enough allowance for maintenance space, it
is impossible to remove the bowl assembly and replace the
filter.
Also, it is impossible to do maintenance inspections so the
equipment may stop or the product may be damaged.
Note
Tightening with excessive torque may damage the product
or injure workers or operators.
Note
Use a tightening torque of 2.21 to 3.69 ft•lbf if the various
pressure gauges are mounted on the NPT1/8 or NPT1/4
pressure port plate.
Note
Foreign matter entering the piping may damage the product
or reduce its performance and service life.
SUP
OPEN
psi
14.5
29
43.5
58
SUP
OPEN
０
ｐ ｓ ｉ
１ ４ ５
１ ２ ０
９ ０
６ ０
３ ０
０
ｐ ｓ ｉ
１ ４ ５
１ ２ ０
９ ０
６ ０
３ ０
psi
14.5
29
43.5
58
3. Use the brackets to install the products.
4. When mounting (installing) products, always make sure they
are secured and sufficiently supported.
ft・lbf
Recommended tightening torque
SUP
OPEN
０
ｐ ｓ ｉ
１ ４ ５
１ ２ ０
９ ０
６ ０
３ ０
psi
14.5
29
43.5
58
Connecting
thread M5 1/8 1/4 3/8 1/2
Torque 0.7 to 1.1 5.2 to 6.6 8.9 to 10.3 16.2 to 17.7 20.7 to 22.1

Handling instructions and Precautions (FRZB Filter Regulators)
❼
Note
If liquid sealant gets on the polycarbonate parts, it may
damage them.
4. If you are using liquid sealant, do not get it on the polycarbon-
ate parts (the bowl of the filter regulator and the front cover of
the pressure gauge).
4. Avoid piping that is rigid, such as steel piping, if vibrations are
transmitted. Use flexible tubes so that the product is not sub-
ject to the vibrations.
●Usable medium
1. Use clean air (filtered to below 40 μm) for the medium. Contact
the nearest Koganei sales office or overseas department if you
are considering using something other than clean air.
2. Avoid using air that contains too much water and/or fluids.
3. If air that contains water and/or fluids is used, or if it is possible
that they may be mixed in with the air being used, we recom-
mend using the iB-Cyclone to reliably remove water and fluids.
4. Do not use the product if the medium being used is prone to
extreme pulsating or surging.
●Medium and operating environment
1. The temperature of the medium and the ambient environment
must be within the range in the specifications.
●Operating environment
1. Do not use the product in locations that are subject to direct
sunlight (ultraviolet rays); locations with high humidity and tem-
perature, dust, salt, or iron powder.
2. Cover the unit when using it in locations where it might be sub-
ject to excessive dust, dripping water, dripping oil, etc.
3. Do not use the product in environments subject to external
vibration or impact.
2. Use a device, such as a freeze-type air dryer or after cooler, to
lower the dew-point temperature of the medium to below the
ambient temperature so condensation or frost does not occur
in the secondary pipes.
3. Do not use medium in the product or use the product in an
environment that includes corrosive components such as
organic solvents, phosphate ester type hydraulic oil, sulfur diox-
ide, chlorine gas, freon gas, ozone, acids, alkaline, etc.
4. The bowl and the front cover of the pressure gauge of the filter
regulator are polycarbonate. This product cannot be used in
environments with the gases and fluids in item 3, nor thread-
locking adhesive, leak detection fluid, hot water or where it may
be exposed to them. This product also cannot be used in direct
ultra-violet light. See page 󱢹for details.
Medium and operating environment
Note
Using the product in an environment that is outside the
specified temperature or with medium that is outside the
specified temperature will cause the product's functions to
stop after a short period and will reduce the product
performance and service life.
Note
Contact a Koganei sales office or overseas department if
you are considering using something other than air.
Note
Using air that contains too much water and/or fluids will
cause the product's functions to stop after a short period
and will reduce the product performance and service life.
Note
If you use an iB-Cyclone, install an FRZ series filter
regulator (without water and fluids removal functions) on
the secondary side.
Note
Medium prone to extreme pulsating or surges will cause the
product's functions to stop after a short period and will
reduce the product performance and service life.
Note
If condensation or frost forms in the product, it may get into
the secondary side.
Note
Using the product in an environment or with medium that is
specified in the above item 3 will cause the product's
functions to stop after a short period and will reduce the
product performance and service life.
Note
External vibrations or shocks may result in damage to
component parts.
●Method of use
Read the Handling Instructions and Precautions for each product
for instructions on correct usage (Filter regulator page ❽to 󱢷,
and □1.181 in. integrated pressure gauge page 󱢷).
●Maintenance (maintenance inspection)
1. Performance and functions may decrease as the pneumatic
equipment ages. Always conduct daily inspections of the pneu-
matic equipment, and confirm that all requisite system functions
are satisfied, to prevent accidents from happening.
2. Read the Handling Instructions and Precautions for instructions
on maintenance and replacing maintenance parts (Filter regu-
lator page 󱢶to 󱢷).
3. The product must be disassembled and reassembled to use
the seal kit.
Operation and maintenance inspections
Note
The product is no longer under warranty if it is disassembled
and reassembled.
3. Wrap the sealing tape in the direction as shown in the diagram
below leaving 1.5 to 2 threads uncovered. When using liquid
sealant, apply a suitable amount and in the same way leave 1.5
to 2 threads uncovered.
Leave 2 threads open Leave 2 threads open
Direction of
wrapping
Sealing tape
Liquid
sealant
Note
If the sealing tape or sealant gets on the lip of pipes or
fittings, bits of it may get into the pipes and cause air leaks.

❽
2. Filter regulators cannot remove oil mist.
2. Install a separate exhaust mechanism on the OUT port (sec-
ondary) side if an external force applied to an actuator or
something on the OUT port (secondary) side of the filter regu-
lator generates a sudden pressure increase.
4. The OUT port (secondary) side pressure may vary if air is not
consumed for a long time or if a sealed circuit or balance circuit
is used. Contact a Koganei sales office or overseas depart-
ment.
5. Contact a Koganei sales office or overseas department if you
are using a circuit that needs highly precise pressure regula-
tion.
3. It is not possible to install a valve on the IN port (primary) side
of the internal pilot type filter regulator (such as models
FRZB4□, FRZB5□) to repeatedly switch the pressure on the
IN port (primary) side.
Filter regulator
(With water and fluids removal functions)
●Direct installation on compressor
Do not install the product directly on a compressor. Use sufficient
countermeasures for temperature control, and removing oils and
solids before use.
●Pressure setting
1. A safety device must be installed for equipment/devices
installed on the OUT port (secondary) side of the filter regula-
tor, when the equipment/device will be damaged or malfunction
due to the pressure if the set pressure value is exceeded.
2. We recommend setting the pressure on the OUT port (second-
ary) side to less than 85% of the supply pressure setting on the
IN port (primary) side.
●Water and fluids removal functions
1. The FRZB Filter Regulator's built-in water and fluids removal
functions are simplified ones. Water and fluids removal efficien-
cy varies according to conditions.
2. See page 󱢹"Principles of water and fluids removal" regarding
the water and fluids removal principles for the FRZB filter regu-
lator series.
●Humidity and oil mist removal
1. Filter regulators cannot remove humidity.
●OUT port (secondary) side pressure exhaust and vent hole
1. When the knob on the filter regulator is turned to reduce the
OUT port (secondary) side pressure or when the OUT port
(secondary) side pressure is higher than the set pressure and
is exhausted, air is exhausted to the outside through the vent
hole shown in the diagram.
Design and selection
Note
Not using countermeasures may cause the product's
functions to stop after a short period and may reduce the
product performance and service life.
Note
If the pressure is set above 85%, the effect of the
fluctuations in the IN port (primary) side pressure and flow
rate are more prone to affect the OUT port (secondary)
side pressure, and it becomes unstable.
Note
Changing the pressure of the IN port (primary) side may
cause fluctuation in the OUT port (secondary) side set
pressure.
Note
Install a membrane type air dryer or something on the
secondary side if dehumidifying is needed.
Note
There may be some vibration and noise caused by the
exhaust.
Note
Install a mist filter or something on the secondary side if oil
mist removal is needed.
Note
The relief port is smaller than the diameter of the pipe and
may not be able to adapt to the sudden rise in pressure of the
OUT port (secondary) side.
Vent hole
Vent hole
For FRZB3□For FRZB4□ and FRZB5□
Excessive oil or solids not
allowed
Operation in environment
or with medium exceeding
operating temperature range
not allowed
FRZB Filter Regulator
Screw compressor
Reciprocating compressor
Compressor
Note
Note
Use an iB-Cyclone to completely remove water and fluids.

Handling instructions and Precautions (FRZB Filter Regulators)
❾
●Mounting (installation) direction
Mount (install) FRZB filter regulators vertically so the knob is up
and the drain port is down.
●Direction of flow
1. Connect the filter regulators so that the medium flows in the IN
port (primary) side and flows out the OUT port (secondary)
side.
2. Use the flow marks on the products to identify the primary port
and secondary port of the filter regulator.
●Piping work
When connecting steel pipes and/or fittings to the filter regulator
IN ports and/or OUT ports, install them so the weight and torque
of the pipes do not affect the product. When tightening the piping,
grip the main unit and tighten it to the torque recommended on
page ❻.
●Flow mark
The following diagram shows the relationship of the direction of
flow of the medium and the flow mark on the filter regulator.
●Installing brackets
To install brackets, do it in the following order.
①Remove the knob.
(For how to remove the knob see "Removing the knob" on
page 󱢴.)
②Attach the bracket.
③Screw on the mounting ring.
④Attach the knob.
(For how to attach the knob see "Attaching the knob" on
page 󱢴.)
Filter regulator
(With water and fluids removal functions)
2. The internal pilot type filter regulators (such as models
FRZB4□and FRZB5□) use the relief port on the OUT port
(secondary) side to reduce residual pressure when the IN port
(primary) side pressure is released.
3. When using a built-in check mechanism specification filter reg-
ulator (such as model FRZB32) that is installed after the valve
to adjust the thrust of the actuator, set the pressure on the OUT
port (secondary) side of the built-in check mechanism specifi-
cation filter regulator not to rise above the set pressure, which
may be caused by the back pressure of the actuator. (As a
guideline, the difference in pressure for the push side and the
pull side of the actuator should be 43.5 psi or less.)
●Reverse flow from the OUT port (secondary) side to the IN
port (primary) side (residual pressure exhaust)
1. Select a filter regulator (such as model FRZB32) with built in
check valve specifications for releasing residual pressure on
the IN port (primary) side to reduce pressure on the OUT port
(secondary) side of a direct operation type filter regulator (such
as models FRZB30 and FRZB31).
●Air consumption
1. The internal pilot type filter regulators (such as models
FRZB4□and FRZB5□) consume air while regulating pressure
on the OUT port (secondary) side.
2. Air consumption varies depending on the relationship of the IN
port (primary) side pressure and the OUT port (secondary)
side pressure.
3. The internal pilot type filter regulators (such as models
FRZB4□and FRZB5□) reduce pressure by consuming air
when the IN port (primary) side and OUT port (secondary) side
are cut off and sealed.
Note
Reducing residual pressure on the secondary side with the
standard specifications and low-pressure specifications
may not be possible depending on the operating
conditions.
Note
Install a residual pressure exhaust valve on the OUT port
(secondary) side because exhausting air requires some
time if the volume of the flow path of the OUT port
(secondary) side is large.
Note
Reversing the IN port (primary) side and the OUT port
(secondary) side connections damages the product and
causes it to stop functioning.
Note
Applying unnecessary force or impact to the knob, bowl
assembly, or pressure gauge may damage component parts.
Built-in check mechanism
filter regulator
Tank
Closed Closed Closed Closed
Tank
Pressure in tank decreases
due to air consumption.
OPEN
OPEN
０
ｐ ｓｉ
１４５
１２０
９０
６０
３０
０
ｐ ｓｉ
１４５
１２０
９０
６０
３０
IN port OUT port
Flow mark
IN port OUT port
For FRZB3□For FRZB4□and FRZB5□
Direction of flow of medium used Direction of flow of medium used
Mounting (installation) and piping
Note
Tighten the mounting ring to less than 3.69 ft•lbf.

󱢳
●Panel mount
1. All the mounting holes for the filter regulator for the panel mount
installation are φ1.12 2 in.
2. See the following table for the thickness of panels.
3. Use the following procedure to install with a panel mount.
① Remove the knob.
(For how to remove the knob see "Removing the knob" on
page 󱢴.)
② Attach the filter regulator to the panel.
③ Screw on the mounting ring.
④ Attach the knob.
(For how to attach the knob see "Attaching the knob" on
page 󱢴.)
2. Always release the knob lock when regulating the pressure.
3. Lock the knob after regulating the pressure.
Note
Using a panel that is thicker than specified may make it
impossible to secure the mounting ring or decrease the
visibility of the yellow caution ring.
Note
Tighten the mounting ring to less than 3.69 ft•lbf.
Note
Turning the knob while it is locked may damage component
parts.
Knob
Mounting ring
Various panels
●Mounting ring
1. Tighten the mounting ring to less than 3.69 ft•lbf.
2. If you use a tool to tighten the mounting ring, be sure to firmly
grip the opposite flats of the mounting ring.
●Locking and releasing the knob
1. The knobs on the filter regulators use a push lock mechanism.
Use the procedure shown in the diagram below to lock and
release the knob.
Operation and maintenance inspections
Yellow caution
ring
Shows the state of
the knob lock
Lock releaseLock
Knob
in.
●Pressure regulation
1. Pressure regulation is done as shown in the following diagram
by turning the knob in the +direction to increase pressure and
in the – direction to reduce it, as shown at the top of the knob.
3. Use a pressure gauge to check the pressure on the IN port
(primary) side and OUT port (secondary) side while regulating
the pressure.
4. It is possible to increase the regulating pressure to exceed the
upper limit of the operating pressure range by turning the knob
to the upper limit of the +side, but keep the regulated pressure
within the operating pressure setting range.
2. Start at a low pressure and match it to the desired set pressure
when regulating the pressure. If you exceed the desired pres-
sure, lower the pressure again and start from a low pressure
again to set the pressure.
Note
Starting from a high pressure to set the desired pressure
causes unstable pressure on the OUT port (secondary)
side.
Note
If the mounting ring is not firmly gripped or too much torque is
applied to it, component parts may be damaged.
Note
Turning the knob farther than necessary may damage
component parts.
Increase pressure Reduce pressure
Model FRZB3□FRZB4□FRZB5□
Thickness 0.12 or less 0.28 or less

Handling instructions and Precautions (FRZB Filter Regulators)
󱢴
Filter regulator
(With water and fluids removal functions)
●Removing the knob
Use the following procedure to remove the knob.
① Release the knob lock.
(For how to release the knob lock see "Locking and releasing
the knob" on page 󱢳.)
② Turn the mounting ring counterclockwise (in the direction of
the arrow in the diagram below).
③ Pull the mounting ring over in the direction of the knob.
④ Pull off the knob and the mounting ring together.
●Attaching the knob
1. Use the following procedure to attach the knob.
① Release the pressure of the IN port (primary) side to the
atmosphere.
② Screw on the mounting ring.
③ Press the knob in until the yellow caution ring is not visible.
Note
Turn the mounting ring until it comes off the threads.
Note
Installing the knob before screwing on the mounting ring
makes it impossible to attach the mounting ring and makes
the knob difficult to remove.
Note
The release sleeve of the mounting ring must be pulled up
until it spreads the hooks (3 places) on the knob.
Mounting ring
Mounting ring
Release sleeve
Hooks on knob
(Three places)
Knob
3. If it is impossible to release the pressure on the IN port (prima-
ry) side to the atmosphere, the pressure on the OUT port (sec-
ondary) side will rise temporarily, check for any effect it may
have had on downstream equipment and devices, and then
attach the knob.
2. Attaching the knob while the filter regulator IN port (primary)
side pressure is being applied, may cause a temporary rise in
pressure on the OUT port (secondary) side pressure.
Before attaching the knob, always release pressure on the IN
port (primary) side to the atmosphere, because a temporary
increase in pressure on the OUT port (secondary) side may
occur which may damage equipment or devices on the OUT
port (secondary) side or cause a malfunction.
Note
It may damage the equipment or devices or injure workers
or operators.
Note
Before pressing on the knob, align the square part of the
adjusting assembly (refer to the exploded view on page 󱢷)
and the square indented portion of the inside of the base of
the knob before pressing the knob on, so the knob is easier
to press on.
Pressure port plate
Groove
O-ring
(no port)
(NPT1/4)
(NPT1/8)
Pressure port plate

□1.181 in. integrated
pressure gauge
Tongue on main unit
●Replacing the □1.181 in. integrated pressure gauge and
pressure port plate
1. Be sure to release any pressure in the system before replacing
the □1.181 in. integrated pressure gauge or pressure port plate.
2. Use the following procedure to change the □1.181 in. integrated
pressure gauge or pressure port plate.
① Remove the two small screws.
② Remove any metal chips from the female thread hole with
compressed air blow.
③ Put the O-ring on the □1.181 in. integrated pressure gauge
or pressure port plate.
④ Align the groove on the □1.181 in. integrated pressure gauge
or pressure port plate with the tongue on the main unit and
attach it.
⑤ Tighten the two mounting screws to 0.66 to 0.81 ft•lbf.
Note
If there are any metal chips left, they may break the threads
or get on the o-ring and cause an air leak.
Note
If torque exceeding the specifications is applied, the head of
the screw or threads may be damaged and cause damage to
component parts. Also, if torque below the specifications is
used, the screw may come loose and cause an air leak.
●Drain cock operation
1. Turn the drain cock with your hand.
2. Use the following procedure to operate the drain cock.
① Turn the drain cock in the direction of [O].
② After the moisture (water) and fluid (sediment) has drained
out, turn the drain cock in the direction of [S] until it clicks
and locks.
3. Do not turn the drain cock more than 100° from the closed
position, when you open it.
Water removal Stopping
ClosedOpen
Drain cock
Note
Not using an o-ring will result in air leaks.
Note
Turning the drain cock more than 100° may damage it.

󱢵
Note
Lateral force may damage the barbed fitting.
●Water and fluids removal
1. If the regulator you are using has no auto drain (-N), be sure to
drain the water and fluids before their volume reaches the level
shown in the left side diagram below.
●Attaching and removing the bowl guard
1. Be sure to release any pressure in the system before attaching
or removing the bowl guard.
2. Use the procedure shown in the diagram below to remove (or
attach) the bowl guard.
4. When attaching or removing the bowl assembly, move it verti-
cally so you do not touch the internal component parts.
3. Use the reverse of the procedure shown in the diagram above
to attach the bowl guard.
2. If the regulator you are using has an auto drain (-A or -C), the
water and fluids that collects on the primary side is flushed all
at once, do not let it exceed the maximum level as shown in the
right side diagram below.
3. See page 󱢸"Explanation of operation of auto drain system"
regarding the auto drain operation principles.
4. A tube with an inner diameter of φ0.157 in. [4mm] can be
attached to the barbed fitting of the drain cock. Make sure the
drain cock is closed (locked) before attaching the tube.
5. Cut the end of the tube to be connected to the barbed fitting of
the drain cock straight across, and the barbed fitting must be
inserted completely as shown in the diagram.
Also, after installing the tube, lightly pull on it to confirm that it
does not come off.
6. Do not allow the tube on the barbed fitting of the drain cock to
become severely bent or twisted close to the fitting.
Note
If the volume of water and fluids is greater than that shown in
the left side diagram below, the water and fluids removal
function of the product is greatly reduced.
Note
The auto drain may malfunction if the volume of water and
fluids exceeds the maximum level as shown in the left side
diagram below.
Tube
Tube cannot
point upward
Maximum level of
water and fluids
For -Aand-C
Maximum level of
water and fluids
For -N
Lower
1
2
Turn to left
Bowl Turn to right to
screw in
Guard button
Rotate until the
guard button
clicks and
locks to the
upper side.
Hooking part
Bowl guard
Groove
Hooking part
Turn the bowl guard 90° to the
right to align the hooking part
with the groove.
Move the bowl guard downward
to remove it.
●Attaching and removing the bowl assembly
1. Be sure to release any pressure in the system before attaching
(or removing) the bowl assembly.
2. Use the procedure shown in the upper right diagram to attach
(or remove) the bowl assembly.
3. Squeeze the guard button to attach (or remove) the bowl
assembly.
Note
If there is a bowl guard, it may fall off when you squeeze it.

Handling instructions and Precautions (FRZB Filter Regulators)
󱢶
Filter regulator
(With water and fluids removal functions)
●Installing provided options
1. Be sure to release any pressure in the system before attaching
(or removing) the various pressure gauges.
2. When installing the various types of pressure gauges, always
apply the wrench on the square or hexagonal part of the piping
connections.
3. Use a tightening torque of 2.21 to 3.69 ft•lbf if the various pres-
sure gauges are mounted on the NPT1/8 or NPT1/4 pressure
port plate.
4. There is a stopper on the female thread of the NPT1/4 and the
NPT1/8 pressure port plates.
Note
Gripping the body of the various pressure gauges to tighten
them may damage component parts.
Note
If torque exceeding the specifications is applied, it may dam-
age component parts. Also, if torque below the specifications
is used, the screw may come loose and cause an air leak.
Note
Further tightening after the stopper has been reached may
damage component parts.
Note
The service life of the element varies depending on the
quality of air supplied to the IN port (primary) side. If there
is a lot of foreign matter in the air supply to the IN port (pri-
mary) side, install a pre-filter on the IN port (primary) side
or change the element more often. As a guideline, change
the element after a year of use.
取付ブラケット
GS6-B（別売）
M3×0.5（長さ6mm）
セムスビス
（GS6-Bに付属）
Cable with connector
前面カバー
パ ネ ル マ ウ ント 用 パ ー ツ
前面カバー
P8注意事項図一式
●Replacing the pressure port plate, knob, and mounting ring
1. When replacing the pressure port plate, refer to "Replacing the
□1.181 in. integrated pressure gauge and pressure port plate"
on page 󱢴.
2. When replacing the knob and mounting ring, refer to
"Removing the knob" and "Attaching the knob" on page 󱢴.
●Replacing the seal kit, element, and bowl assembly
1. To replace the seal kit, element, and bowl assembly, remove
the filter regulator and do the work on a work table.
2. The o-rings and other sealing materials (except for the dia-
phragm) of the filter regulator are coated with grease.
3. Contact your nearest Koganei sales office or overseas depart-
ment if you are considering re-coating the o-rings and other
parts with grease.
Recommended grease: Lithium Soap based No. 2 or equivalent
4. Periodically replace the element in the filter regulator.
Note
They have different internal component parts, so their
specifications do not match.
Note
Cracks, scratches, or other deterioration can cause the
bowl to break.
Note
Always assemble the component parts correctly.
5. It is not possible to combine a bowl assembly for an FRZB filter
regulator (with water and fluids removal function) with FRZ
series filter regulators (without water and fluids removal func-
tion).
6. Do periodic inspections to look for cracks, scratches, or other
deterioration in the clear plastic part of the bowl assembly. If
you detect any cracks, scratches, or other deterioration, stop
using the regulator and replace the bowl assembly with a new
one.
7. Replace the bowl assembly with a new one if it becomes dirty
or the transparency is significantly reduced. To wash the bowl,
use diluted household neutral cleaner to wash it and then rinse
it off with water.
See page 󱢹for details about the chemical resistance of the
bowl material.
8. When replacing the seal kit, element, and bowl assembly, be
careful not to lose component parts.
9. Refer to page 󱢷when replacing the seal kit, element, and bowl
assembly.
FRZ Series
Filter Regulator
（FRZ3□・FRZ4□・FRZ5□）
FRZB
Filter Regulator
（FRZB3□・FRZB4□・FRZB5□）
(assemblies
cannot be
changed)
×

󱢷
Filter regulator (with moisture removal function) bowl side
●Adjusting the range of the set pressure
1. Use the procedure below to adjust the range of the set pres-
sure (the green portion).
① Adjust the lower limit of the range of the set pressure by
rotating the protrusions (2 places) clockwise with your hand.
② Adjust the upper limit of the range of the set pressure by
rotating the protrusions (2 places) counter clockwise with
your hand.
●Surging, vibration, and shock
The □1.181 in. integrated pressure gauge is a precision device. It
cannot be used if the medium surges, or external vibration or
shock is applied.
Operation and maintenance inspections
Medium and operating environment
□ 1.181 in. series integrated pressure gauge
MPa
1.0
0.8
0.60.4
0.2
0
MPa
●Mounting (installation)
Read the Handling Instructions and Precautions for the filter regu-
lator when installing the □1.181 in. integrated pressure gauge to
the filter regulator.
Mounting (installation) and piping
Note
Adjusting the range of the set pressure with a tool may
damage component parts.
Note
Surges in the medium, external vibrations or shocks may
result in damage to component parts.
Protrusions (two places)
Pressure setting range (green) Upper limit
Lower
limit
Note
The product is no longer under warranty if it is disassembled
and reassembled.
O-ring large*
O-ring small*
Valve assembly*
Valve guide baffles
Element
Bowl assembly
Stem
Spring
①
①
②
②①
②
①
②
FRZB3□FRZB4□・FRZB5□
*Parts in seal kit.
Assembled
position
Assembled
position
Assembled
position
FRZB3□FRZB4□・FRZB5□
Diaphragm assembly*
Spring
Bonnet
4 small screws
(tightening torque
9.56 to 11.68 in•lbf)
4 small screws
(tightening torque
8.0 to 9.7 in•lbf)
Knob
*Parts in seal kit.
Adjusting assembly
Mounting ring
Filter regulator knob side
Note
・ The product is no longer under warranty if it is disassembled
and reassembled.
・ Regarding the O-rings in the seal kit: FRZB3□can only
use the large and small O-ring, the FRZB4□and
FRZB5□can only use the large O-ring, the remaining
O-rings are not used.

Handling instructions and Precautions (FRZB Filter Regulators)
󱢸
NO type NC type
When unpressurized, the liquid
outlet opens and the liquid drains
naturally.
When unpressurized, the liquid
outlet closes and the liquid
cannot drain.
Caution: The liquid does not drain
when unpressurized,
if there is a lot of liquid
even in an unpressurized
(low pressure) condition,
it may be necessary to
drain the liquid by hand.
Air and liquid will be discharged
from the liquid outlet until the
pressure exceeds the minimum
operating pressure (22 psi). The
air and liquid will stop after stored
pressure exceeds the minimum
operating pressure.
Caution: A compr e s s or with a
small output may not
reach full pressure, and
there may be exhaust
air until the minimum
operating pressure is
exceeded.
In the same way, when
unpressurized, the liquid outlet
closes and the liquid cannot drain.
When the level of liquid in the
bowl reaches a specified level,
the float lifts and the liquid
automatically drains.
Caution: The liquid can be drained
manually by turning the
drain knob to the left. See
page 󱢴for details.
When the level of liquid in the bowl
reaches a specified level, the float
lifts and the liquid automatically
drains.
Note 1: Supply pressure is needed
to operate the auto drain.
A minimum of 22 psi is
needed for the supply
pressure.
2: The liquid can be drained
manually by turning the
drain knob to the left. See
page 󱢴for details.
When the liquid drains, the
float lowers and the liquid outlet
closes, and the liquid stops
draining.
When the liquid drains, the
float lowers and the liquid outlet
closes, and the liquid stops
draining.
Float
Float
Bowl
Bowl
Drain knob
Drain knob
Typ e
State
●Explanation of operation of auto drain system
Open
Open
Closed
Closed
Open
Closed
Closed
Not pressurizedDraining the liquid completed Draining the liquid Pressurized
Closed

Handling instructions and Precautions
Reference data
󱢹
●About the chemical resistance of polycarbonate
The chemicals in the following table degrade polycarbonate. Because of this, they may damage the bowl of the filter regulator or the
front cover of the pressure gauge and cause an accident. The products cannot be used in locations where the chemicals in the
following table are present in the compressed air, ambient air, or on surfaces. This does not mean that polycarbonate is chemically
resistant to all chemicals not listed below.
Type Classification Chemical name Application example
Inorganic
compound
Acid Hydrochloric acid, sulfuric acid, nitric acid, fluorine,
phosphoric acid, chromic acid
Acid cleaning for metals, acid degreasing, and
coating processing
Alkali Caustic soda, caustic potash, hydrated lime,
ammonia water, sodium carbonate Alkaline degreasing of metals
Inorganic salt Sodium sulfide, potassium nitrate, potassium
dichromate, sodium nitrate Dyes, rust inhibitor
Organic
compounds
Aromatic
hydrocarbons Benzene, toluene, xylene, ethyl benzene, styrene Paint thinner
(Benzene, toluene, xylene)
Chlorinated
aliphatic
hydrocarbons
Methyl chloride, ethylene chloride, methylene
chloride, acetylene dichloride, chloroform, trichlene,
tetrachloroethylene, carbon tetrachloride
Organic solvents for metal cleaning
(trichlene, tetrachloroethylene, carbon
tetrachloride)
Chlorinated
aromatic
hydrocarbons
Chlorobenzene, dichlorobenzene, hexachloride
(BHC) Agricultural chemicals
Petroleum
components Solvent, naphtha, gasoline Fuel
Alcohol Methyl alcohol, ethyl alcohol, cyclohexanol,
benzyl alcohol Anti-freezing agents
Phenol Carbolic acid, cresol, naphthol Antiseptic solutions
Ether Methyl ether, methyl ethyl ether, ethyl ether Brake fluid additive, detergent
Ketones Acetone, methyl ethyl ketone, cyclohexane,
acetophenone Cleaning solutions
Carboxylic acid Formic acid, acetic acid, butyl acid, acrylic acid,
oxalic acid, phthalic acid
Dyes, aluminum processing solution (oxalic
acid), paint medium (phthalic acid)
Phthalic acid
ester
Dimethyl phthalate (DMP), diethyl phthalate (DEP),
dibutyl phthalate (DBP), dioctyl phthalate (DOP)
Lubricants, synthetic hydraulic fluids, corrosion
resistant additives, synthetic resin plasticizer
Oxyacid Glycolic acid, lactic acid, malic acid, citric acid,
tartaric acid Food preservatives, acidulant
Nitro compounds Nitromethane, nitroethane, nitroethylene,
nitrobenzene Paint solvent, explosives
Amine Methylamine, dioctylamine, ethylamine, aniline,
acetanilide Brake fluid additive
Nitrile Acetonitrile, acrylonitrile, benzonitrile Nitrile rubber materials
●Principles of water and fluids removal
Filter element
Valve guide baffles
Bowl
Louvers
OUT
(secondary) side
IN
(primary) side
①Louvers create a swirling current in the air that enters through the
IN port (primary) to separate the water and fluids from the air.
②The separated water and fluids passes through the gaps in the
valve guide baffles and collects in the bowl.
③The air, from which the water and fluids have been separated,
passes through the filter element to the OUT port (secondary).

Order codes
FRZB F11
FRZB Filter Regulator
Model Port size
of body M5
NPT 1/8 1/4 3/8 1/2
30 M5 01 02
40 01 02 03
50 02 03 04
31 M5 01 02
41 01 02 03
51 02 03 04
32 M5 01 02
Standard
Low
pressure
Built-in
check
mechanism
Bracket
Blank No bracket
BWith bracket
Pressure gauge specifications
Blank No pressure gauge (pressure gauge connection port NPT1/4)
GP1 No pressure gauge (pressure gauge connection port NPT1/8)
GN No pressure gauge (No pressure gauge connection port)
G1C 145 psi specifications, □1.181 in. integrated pressure gauge
G4C 58 psi specifications, □1.181 in. integrated pressure gauge
G1 145 psi specifications, φ1.575 in. pressure gauge
G3 44 psi specifications, φ1.575 in. pressure gauge
G1S 145 psi specifications, φ1.575 in. stainless Bourdon tube pressure gauge
G3S 44 psi specifications, φ1.575 in. stainless Bourdon tube pressure gauge
GS6 145 psi specifications, digital pressure switch
GS1A 145 psi specifications, □1.969 in. pressure gauge with built-in switch
Lead wire for 24 VDC
GS1B 145 psi specifications, □1.969 in. pressure gauge with built-in switch
Lead wire for 100 VAC, 200 VAC
GS1C 145 psi specifications, □1.969 in. pressure gauge with built-in switch
With DIN type connector for 24 VDC
GS1D 145 psi specifications, □1.969 in. pressure gauge with built-in switch
With DIN type connector for 100 VAC, 200 VAC
Filter regulator
Symbol
Specifications
●Standard
●Low pressure
●Built-in check mechanism
FRZB30-F11•FRZB31-F11•FRZB32-F11
FRZB40-F11•FRZB41-F11
FRZB50-F11•FRZB51-F11
Note 1: Maximum value of specified range. Air consumption varies depending on the relationship of the primary pressure and the secondary pressure.
2: Supply pressure greater than 22 psi is needed to select the optional auto drain (supply pressure is needed to operate the auto drain).
3: Refer to the order codes and the specifications for each product starting on page 󱣀for details on the various types of options.
󱢺
Drain cock specifications
A Auto drain type, drain cock
NO type
C Auto drain type, drain cock
NC type
N Drain cock with fitting
Bowl guard specifications
Blank No bowl guard
PG With bowl guard
NPT thread
specifications
Body Die cast aluminum alloy
Bonnet and adapter Polyacetal
Diaphragm Base fabric + synthetic rubber
Bowl Polycarbonate
Filter element Non-woven fabric
Bracket Steel plate (electroless nickel plated)
Materials of major parts
Port size M5×0.8mm, NPT1/8, NPT1/4 NPT1/8, NPT1/4, NPT3/8 NPT1/4, NPT3/8, NPT1/2
Filtration μm 5
Relief start pressure psi Set pressure +7 or less
Regulation method
Direct operation type and relief type Internal pilot type and relief type
Medium Air
Maximum operating pressure psi 145
Proof pressure psi 218
Operating temperature range (atmosphere and medium) °F 41 to 140 (non-condensation)
Air consumptionNote 1 ft3/min (SCFM) — 0.18 or less
Water storage capacity (for -N) in30.79 0.98 1.65
Standard/built-in check mechanism 7 to 123
Low pressure 7 to 58
Pressure setting range psi
Model Standard FRZB30-F11 FRZB40-F11 FRZB50-F11
Low pressure FRZB31-F11 FRZB41-F11 FRZB51-F11
Item Built-in check mechanism FRZB32-F11
Mass (for standard specifications and largest port size) lbf 0.44 0.53 0.73
Standard equipment Mounting ring
OptionsNote 2, Note 3
Auto drain (NO or NC), bowl guard (plastic assembled), □1.181 in. integrated
pressure gauge (assembled), other pressure gauges (included parts), brackets (included parts)
Note: Refer to order codes and dimensions on page 󱣁to 󱣈for information
about the specifications for pressure gauges, digital pressure
switches, pressure gauges with built-in pressure switches, and
purchasing individual parts.

Order codes
Inner construction
Body size
30 For FRZB3□
40 For FRZB4□
50 For FRZB5□
Bowl guard specifications
Blank No bowl guard
PG With bowl guard
Auto drain type
NO type
NC type
Drain cock
with fitting
With bowl
guard
Drain cock specifications
A Auto drain type, drain cock NO type
C Auto drain type, drain cock NC type
N Drain cock with fitting
●Parts for maintenance
●Bowl assembly
BA-FRZB□-F11-□-□
Body size
30 FR15□→FRZB3□compatible
40 FR30□→FRZB4□compatible
50 FR60□→FRZB5□compatible
8Z-BK□
󱢻
Body size
30 For FRZ3□
40 For FRZ4□
50 For FRZ5□
●Knob ●Mounting ring
●Seal kit (various O-rings, 1 valve assembly, and 1 diaphragm assembly)
H-FRZ R-FRZ
SRK-FRZ□
Refer to "Replacing the seal kit, element, and bowl assembly"
on page 󱢶for the component parts of the seal kit.
●Order codes for brackets only
8Z-BK * Interchangeable brackets (compatible with multi-series FR15□, FR30□, and FR60□
filter regulators)
Body size
30 For FRZB3□
40 For FRZB4□
50 For FRZB5□
●Element ●Pressure port plate
E-□ZB P-FRZ(without pressure gauge connection port) GP-FRZ□-F11(with pressure gauge connection port)
1 O-ring and 2
small screws
included
1 O-ring and 2
small screws
included
Port size
Blank NPT1/4
1NPT1/8
Drain knob
FRZB3□
Bonnet
Spring
Caution ring
Diaphragm
Stem
Valve
Spring
Guard button
Adjusting
assembly
Knob
(with lock)
Mounting ring
Body
Louvers
Filter element
Valve guide baffles
Baffle fin
Bowl
Built-in check
mechanism
For FRZB32
FRZB4□・FRZB5□
Adjusting
assembly
Diaphragm
Mounting ring
Knob
(with lock)
Filter element
Valve guide baffles
Drain knob
Bowl
Spring
Diaphragm
Body
Louvers
Baffle fin
Bonnet
Spring
Caution ring
Rubber ball
Adapter
Stem
Spring
Valve
Guard button

󱢼
Pressure characteristics
●Standard and built-in check mechanism
●Standard and built-in check mechanism
FRZB30-F11
FRZB32-F11 FRZB40-F11 FRZB50-F11
Setting point
Setting point Setting point
1 MPa=145 psi1 MPa=145 psi1 MPa=145 psi
Secondary side pressure
26.1
27.6
29
30.5
31.9
33.4
37.7
24.7
psi
0.18
0.19
0.2
0.21
0.22
0.23
0.26
36.30.25
34.80.24
0.17
MPa
29
Primary side pressure
43.5 58 72.5 87 101.5 116 130.5 145 psi
0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 MPa
Secondary side pressure
26.1
27.6
29
30.5
31.9
33.4
37.7
24.7
psi
0.18
0.19
0.2
0.21
0.22
0.23
0.26
36.30.25
34.80.24
0.17
MPa
29
Primary side pressure
43.5 58 72.5 87 101.5 116 130.5 145 psi
0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 MPa
Secondary side pressure
26.1
27.6
29
30.5
31.9
33.4
37.7
24.7
psi
0.18
0.19
0.2
0.21
0.22
0.23
0.26
36.30.25
34.80.24
0.17
MPa
29
Primary side pressure
43.5 58 72.5 87 101.5 116 130.5 145 psi
0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 MPa
FRZB30-F11-M5
FRZB32-F11-M5
FRZB30-F11-01
FRZB32-F11-01
FRZB30-F11-02
FRZB32-F11-02
FRZB40-F11-01
FRZB40-F11-02
FRZB40-F11-03
FRZB50-F11-02
FRZB50-F11-03
FRZB50-F11-04
1 MPa=145 psi
1
ℓ /min=0.0353 ft3/min
1 MPa=145 psi
1
ℓ /min=0.0353 ft3/min
1 MPa=145 psi
1
ℓ /min=0.0353 ft3/min
1 MPa=145 psi
1
ℓ /min=0.0353 ft3/min
1 MPa=145 psi
1
ℓ /min=0.0353 ft3/min
1 MPa=145 psi
1
ℓ /min=0.0353 ft3/min
1 MPa=145 psi
1
ℓ /min=0.0353 ft3/min
1 MPa=145 psi
1
ℓ /min=0.0353 ft3/min
1 MPa=145 psi
1
ℓ /min=0.0353 ft3/min
0
0
1.75 3.5 5.25 ft
3
/min (SCFM)
50 100 150
ℓ /min (ANR)
Flow rate
08.75 17.5 26.25 ft
3
/min (SCFM)
250 500 750
ℓ /min (ANR)
Flow rate
0
0
8.75 17.5 26.25 ft
3
/min (SCFM)
250 500 750
ℓ /min (ANR)
Flow rate
0
0
8.75 17.5 26.25 ft
3
/min (SCFM)
250 500 750
ℓ /min (ANR)
Flow rate
0
0
17.5 35 52.5 ft
3
/min (SCFM)
500 1000 1500
ℓ /min (ANR)
Flow rate
0
0
17.5 35 52.5 ft
3
/min (SCFM)
500 1000 1500
ℓ /min (ANR)
Flow rate
0
0
17.5 35 52.5 ft
3
/min (SCFM)
500 1000 1500
ℓ /min (ANR)
Flow rate
0
0
35 70 105 ft
3
/min (SCFM)
1000 2000 3000
ℓ /min (ANR)
Flow rate
0
0
35 70 105 ft
3
/min (SCFM)
1000 2000 3000
ℓ /min (ANR)
Flow rate
00
14.5
29
43.5
58
72.5
87
101.5
psi
Secondary side pressure
0.1
0.2
0.3
0.4
0.5
0.6
0.7
MPa
0
14.5
29
43.5
58
72.5
87
101.5
psi
Secondary side pressure
0.1
0.2
0.3
0.4
0.5
0.6
0.7
MPa
00
14.5
29
43.5
58
72.5
87
101.5
psi
Secondary side pressure
0.1
0.2
0.3
0.4
0.5
0.6
0.7
MPa
00
14.5
29
43.5
58
72.5
87
101.5
psi
Secondary side pressure
0.1
0.2
0.3
0.4
0.5
0.6
0.7
MPa
00
14.5
29
43.5
58
72.5
87
101.5
psi
Secondary side pressure
0.1
0.2
0.3
0.4
0.5
0.6
0.7
MPa
00
14.5
29
43.5
58
72.5
87
101.5
psi
Secondary side pressure
0.1
0.2
0.3
0.4
0.5
0.6
0.7
MPa
00
14.5
29
43.5
58
72.5
87
101.5
psi
Secondary side pressure
0.1
0.2
0.3
0.4
0.5
0.6
0.7
MPa
00
14.5
29
43.5
58
72.5
87
101.5
psi
Secondary side pressure
0.1
0.2
0.3
0.4
0.5
0.6
0.7
MPa
00
14.5
29
43.5
58
72.5
87
101.5
psi
Secondary side pressure
0.1
0.2
0.3
0.4
0.5
0.6
0.7
MPa
0
0
Flow rate characteristics
Remarks: Graphs show flow rate characteristics
at 102 psi constant pressure on the
primary side.