Kitz B Series User manual

Document No.:KE-4025-06
Operation Manual
For
KITZ B Series
Pneumatic Valve Actuators
Thank you for choosing KITZ products.
For safe and trouble-free function and performance of the product, make sure to
read and understand all items in this manual before handling the product.
Keep this manual accessible to all valve operating personnel

Document No.:KE-4025-06
This manual applies to the KITZ B Series Pneumatic Valve Actuators.
For actuators of automatically operated value, refer to the operation manual of relevant actuators
prepared by the manufacturers.
NOTES TO USERS
 This manual is designed to show an appropriate usage of the products for transportation, storage,
installation, operation and maintenance. Be sure to read through this manual before handling the
products.
 This manual does not cover the whole scope of conceivable usage of the products for transportation,
storage, installation, operation and maintenance. If technical assistance beyond the scope of this manual
is required, contact KITZ Corporation or its distributor.
 The specifications for transportation, storage, installation, operation and maintenance described in this
manual have been determined with valve maintenance taken into consideration. DO NOT use products
beyond the specifications.
 The illustrations given in this manual do not show all the details. If more detailed information is required,
refer to the relevant approved drawings.
*Any information provided in this operation manual is subject to change without prior notice.
CAUTION AND WARNING
For the safe use of the product, read all of the safety precautions listed in this manual before
handling the product.
The safety precautions in this manual are determined to ensure safe and proper use of the product
and to prevent personal injury and property damage. This manual uses two terms, Warning and
Caution, according to the hazard level, to clearly indicate the extent and severity of the risk.
Both Warning and Caution indicate important safety instructions. Please be sure to follow them.
Indicates an imminently hazardous situation that, if not avoided,
may result in serious injury or death.
Indicates a potentially hazardous situation that, if not avoided,
may result in minor to moderate injuries or product damage.
Indicates a caution .to alert the users.
Indicates a prohibited action that must not be carried out.
Indicates a mandatory action that must be followed.

Document No.:KE-4025-06
Contents
Page
1 Note for Users System Design ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 1
2 Storage and Handling ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 2
3 Product Type and Code ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 3
4 Driving Mechanism ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 4
5 Standard Technical Specifications ・・・・・・・・・・・・・・・・・・・・・・・・・・・ 6
6 Cylinder Volume and Air Supply Requirement ・・・・・・・・・・・・・・・・・・ 7
7 Air Tubing and Electric Wiring ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 9
8 KITZ Optional Accessories ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 11
9 Mounting Valve-Actuator Units on Pipe ・・・・・・・・・・・・・・・・・・・・・・・ 12
10 Automated Operation ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 13
11 Manual Operation ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 14
12 Periodic Inspections and Maintenance ・・・・・・・・・・・・・・・・・・・・・・・・・ 19
13 Troubleshooting ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 21
14 Disassembly and Reassembly ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 22
15 Adjustment of Valve Operating Positions ・・・・・・・・・・・・・・・・・・・・・・ 46
16 Product Warranty ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 47
17 Consumables ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 48
18 Contact for Technical Assistance ・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 50

Document No.:KE-4025-06 1/50
1 Note for Users System Design
 Holding valve position
KITZ pneumatic actuators do not assure non-leakage. The actuator does not keep
the valve in the predetermined open position for a long time without continuous air
supply. When connecting the actuator to the air tank, it may become impossible to
hold the valve opening position due to leakage from the actuator.Please periodically
perform an inspection to detect leakage from the seal washer, retighten the valve
and check the pressure drop in the air tank when a actuator is connected to the air
tank. If you need to keep the valve in the predetermined position for a long time,
please contact KITZ.
 Residual pressure in the cylinder of the spring return type actuator
Output torque of the spring return type actuator indicates the value without internal
air residue remains inside the cylinders. Please design the circuit system to be able
to exhaust the internal pressure from the cylinder during the spring return action. If
internal pressure remains in the cylinder, the output torque will be dropped and the
valve may not be closed.
 The actuator may move to the opening direction if pressure is applied to the
both sides of the cylinder port of the double action type actuator. If manual
operation is needed, the circuit system shall be designed to equalize the cylinder
internal pressure and the atmospheric pressure.
 DO NOT pressurize the breathing port of the spring return type actuator.
 Prevent dust, rainwater or waste from entering into the actuator through the
breathing port.

Document No.:KE-4025-06 2/50
2. Storage and Handling
 DO NOT store actuators in corrosive atmospheres such as sulfur dioxide gas or
chloric gas. Actuators may rust in the corrosive atmospheres.
 DO NOT overload actuators and valves, place any object or step on them.
 DO NOT remove the dust protectors from the product before installation.
 Anti-rust coating is applied the product, but store the product in a cool and dry
place to prevent rusting and malfunction.
 When transportation or handling or mounting a actuator-valve unit in size 3 or
above, use a rope or a strap as illustrated in Fig. 1.
 Handle the product with extreme care to prevent damage to the solenoid valves,
accessories or copper tubes equipped to the product.
Fig. 1

Document No.:KE-4025-06 3/50
3. Product Type and Code
Ｂ Ｓ Ｗ - Ｄ 6
①② ③④
① Driving Mechanism ④ Size
Non ・・・ Double action type
Ｓ ・・・ Spring return type
② Manual Override
Non ・・・ No manual override
Ｗ ・・・ Manual override ( Spring return type only)
③ Cylinder Structure
Non ・・・ Single piston
D ・・・ Double piston (type B-6, B-7 only)
0
1
2
3
4
5
6
7

Document No.:KE-4025-06 4/50
4 Driving Mechanism
4.1 Type B Double-Action Actuator (Single Piston Type Cylinder)
The air pressure supplied into the port〈A〉pushes the piston to the left and energizes its movement to rotate
the scotch-yoke counterclockwise. The scotch-yoke converts linear movement of the piston rod to
counterclockwise rotational movement of the shaft to open or close the valve, following the preset mode.
Reverse supply of the air pressure into the port〈B〉activates the reverse valve operation. Air failure will cause
the valve stay at the position.
4.2 Type BD Double-Action and Double Cylinder Actuator (Double Piston Type Cylinder)
The air pressure supplied into the port〈A〉and〈A〉 pushes the piston to the left and energizes its movement
to rotate the scotch-yoke counterclockwise. The scotch-yoke converts linear movement of the piston rod to
counterclockwise rotational movement of the shaft to open or close the valve, following the preset mode.
Reverse supply of the air pressure into the port〈B〉and〈B〉 activates the reverse valve operation. Air failure
will cause the valve stay at the position.
Pin
Roller
Scotch yoke Shaft Piston rod
Piston
A
B
A
B
A
’
B’
Fig. 2
Fig. 3

Document No.:KE-4025-06 5/50
4.3 Type BS or BSW Spring-Return Actuator
The air pressure supplied into the port〈A〉pushes the piston to the left and energizes its movement to rotate
the scotch-yoke counterclockwise, compressing the spring. The scotch-yoke converts linear movement of the
piston rod to counterclockwise rotational movement of the shaft, to open or close the valve, following the
preset made.
At the moment the air is discharged to the atmosphere through the solenoid valve, the spring force pushes the
piston to the right direction, and the scotch-yoke activates clockwise rotation of the shaft to reversely
operate the valve. Air failure will cause the valve return to the original open or closed position automatically,
following the preset mode, unlike the value driven by Type B actuator.
Type BSW actuator is combination of Type BS actuator and a hand wheel for manual operation, and its driving
mechanism is exactly same as that of Type BS actuator
4.4 Type BS-7 or BSW-7 Spring-Return with Manual Operation Equipment
The air pressure supplied into the port〈A〉and〈A〉pushes the piston to the left and energizes its movement to
rotate the scotch-yoke counterclockwise, compressing the spring. The scotch-yoke converts linear movement
of the piston rod to counterclockwise rotational movement of the shaft, to open or close the valve, following
the preset made.
At the moment the air is discharged to the atmosphere through the solenoid valve, the spring force pushes the
piston to the reverse direction, and the scotch-yoke activates clockwise rotation of the shaft to reversely
operate the valve. Air failure will cause the valve return to the original open or closed position automatically,
following the preset mode, unlike the value driven by Type B actuator.
Type BSW actuator is combination of Type BS actuator and a hand wheel for manual operation, and its driving
mechanism is exactly same as that of Type BS actuator.
Pin
Roller
Scotch yoke Shaft Piston rod
Piston
A
Fig. 4
Fig. 5
A
A
’

Document No.:KE-4025-06 6/50
5. Standard Technical Specifications
Output Torque
Unit:N-m Unit:N-m
Operating media Compressed instrumentation air
Standard operating pressure 0.4MPa; factory preset pressure
Pressure supply range 0.3MPa to 0.7MPa Contact KITZ when other than the standard operating
pressure is required.
Standard durability 100,000 cycles under moderate service conditions
Housing test pressure 0.97MPa
Shaft rotation 90°(±5°)
Service temperature range -20℃ to +60℃
(No freezing of supply air)
Operating Pressure
0.4MPa
Type-
Size 0° 45° 90°
B-0 14.0 6.9 14.0
B-1 36.4 18.2 36.4
B-2 94.5 47.2 94.5
B-3 238 119 238
B-4 606 303 606
B-5 1517 758 1517
B-6 3680 1840 3680
B-D6 7365 3683 7365
B-7 9215 4607 9215
B-D7 18444 9222 18444
Operating Pressure
0.4MPa
Type-
Size Operation 0° 45° 90°
Air 16.7 6.8 10.7
BS-0 Spring 10.5 6.7 16.5
Air 39.1 16.2 25.9
BS-1 Spring 25.8 16.1 38.9
Air 100 41.7 66.3
BS-2 Spring 66.8 41.9 101
Air 265 110 177
BS-3 Spring 178 111 266
Air 685 285 455
BS-4 Spring 452 283 682
Air 1730 720 1151
BS-5 Spring 1150 720 1730
Air 4151 1729 2768
BS-6 Spring 2873 1733 4158
Air 10974 4580 7357
BS-7 Spring 7016 4410 10624

Document No.:KE-4025-06 7/50
6 Cylinder Volume and Air Supply Requirement
■ Cylinder Volume
6.1 Type B Actuator [Double Action Type]
Unit: liter
Double Cylinder Actuator (Double Piston Type Cylinder)
6.2 Type BS or BSW [Spring Return Type]
Cylinder volume of Type BS or BSW actuators
BS-7, BSW-7
Cylinder
Type-size V1 V2
B‐0 0.05 0.07
B‐1 0.17 0.17
B‐2 0.43 0.43
B‐3 1.04 1.09
B‐4 2.69 2.75
B‐5 6.53 6.80
B‐6 15.90 14.20
B‐D6 30.10 30.10
B‐7 38.30 39.00
B‐D7 77.30 77.30
Cylinder
Type-size V
BS‐0 / BSW‐0 0.17
BS‐1 / BSW‐1 0.33
BS‐2 / BSW‐2 0.82
BS‐3 / BSW‐3 2.23
BS‐4 / BSW‐4 5.39
BS‐5 / BSW‐5 13.70
BS‐6 / BSW‐6 30.20
BS‐7 / BSW‐7 70.90
Air
Air
Air Air
Air Air
Air
Air
bb1
a1a
b2b
Fig. 6
Fig. 7
a1+a=V1
b1+b=V2
Air
b1+b=V
Unit: liter
BS and BSW have the same cylinder volumes.

Document No.:KE-4025-06 8/50
6.3 Air Supply Requirement (Flow Rate)
Actuators should be supplied with air sufficient to operate the valve through one full stroke from the open to
closed position or vice versa in t seconds, as converted into flow rates per minute.
The required air volume Q is expressed with the following equation.
Q=V ((P+0.1013)/0.1013)×60
t(Nl/min.)
where
Q=Air volume requirement per minute (Nl/min.)
V=Cylinder Volume (liters)
V1 or V2, whichever larger, for double-action actuators
P=Supply pressure (MPa in gauge)
t =Time required per stroke (seconds)
6.4 Air Consumption
Air consumption means the volume of air discharged into the atmosphere from an actuator operating n times
forward and backward per hour as converted into volumes per minute. The valve is calculated with the following
equation,
Type B actuator [Double action type]
Q=(V1+V2)((P+0.1013)/0.1013)n× 1
60 (Nl/min.)
Type BS or BSW actuator [Spring return type]
Q=V ((P+0.1013)/0.1013)n× 1
60 (Nl/min.)
 Use clear, dry air filtered to remove dusts and moisture which will
deteriorate the housing interior and cause malfunction of the actuator.
 Ensure to correctly calculate the required amount of air in advance and
prepare compressors and reservoirs with sufficient capacity.
 Select solenoid valves, air filter-regulators and air supply tubes which have
a sufficient capacity to accommodate the airflow rate calculated in advance.
 To determine the practical capacity of a compressor or air tank, addition of
extra 30% to the calculated air consumption volume is recommended
considering a possible air loss caused by connecting to the accessories and
tubes. Insufficient air supply will cause a pulsy stroke and malfunction.
Nl: Volume of standard air
Condition of standard air
Air temperature: 20℃
Absolute pressure: 760mmHg
Relative humidity: 65%

Document No.:KE-4025-06 9/50
7. Air Tubing and Electric Wiring
7.1 Air Tubing for Actuators
4-way solenoid valve
Solenoid valve energized to open valve
Pressure equalizing valve
Air supply
Filter regulator
Solenoid valve energized to close valve
Pressure
equalizing valve
4-way solenoid valve
Filter regulator
Air supply
Solenoid valve energized to open valve Solenoid valve ener
g
ized to close valve
Pressure
equalizing valve Pressure
equalizing valve
4-way solenoid valve 4-way solenoid valve
Filter regulator Filter regulator
Air supply Air supply
Solenoid valve ener
g
ized to o
p
en valve
Solenoid valve ener
g
ized to o
p
en valve
4-way or 3way solenoid valve
Filter regulator Filter regulator
Filter regulator Filter regulator
4-way or 3way solenoid
valve
4-way or 3way solenoid valve 4-way or 3way
solenoid valve
Solenoid valve ener
g
ized to close valve
Solenoid valve ener
g
ized to close valve
Air supply Air supply
Air supply Air supply
Type B-0 to 7
Type B-D6, D7
Type BS-0 to 6, BSW-0 to 6
Type BS-7, BSW-7
Fig. 8
Fig. 9
Fig. 10
Fig. 11

Document No.:KE-4025-06 10/50
7.2 Air Supply Port
Select copper tubes (covered or uncovered) for air supply and exhaust ports according to the following table:
Nominal size of piping threads (Rc)
7.3 Tubing
7.4 Specification of Solenoid Valves
Type B actuators need 4-way solenoid valves. 4-way solenoid valves with one OUT port plugged or 3-way
solenoid valves can energize Type BS or Type BSW actuators. Electric wiring should be made as shown in Fig.
8 to Fig. 11, depending on the planned mode of operation.
KITZ B Series actuators assembled with solenoid valves at the manufacturer have been complete with copper
tubing for air supply and exhaust pens. Users should make air supply tubing between air compressors and
solenoid valves.
7.5 Pressure Equalizing Valves (By-Pass Valves)
Manual operation of Type B actuators needs a pressure equalizing valve between the cylinder and the solenoid
valve.
7.6 Speed Controllers
Mount a speed controller between the cylinder and the solenoid valve.
7.7 Silencers
Install a silencer directly in the exhaust port of the solenoid valve
Actuator size 0 1 2 3 4 5 6 7
Type B 1/8 1/4 1/4 1/4 1/4 1/2 1/2 1/2
Type BS/BSW 1/8 1/4 1/4 1/4 1/2 1/2 1/2 1/2
Actuator size 0 1 2 3 4 5 6 7
Tube (Outer diameter×Inner diameter) φ8×φ6 φ10×φ8
 For manual operation of Type B actuators, the air residue in the cylinder
must be discharged to the atmosphere. Ensure to install a pressure
equalizing valve between the solenoid valve and the cylinder.
 Connect copper tubes (covered or uncovered) of a suitable diameter and
wall thickness between actuators and pressure sources to maintain
sufficient air pressure during valve operation.
 Securely seal all of the tubing joints to avoid air leakage through the
connections, accessories or tubes. Ensure that loose sealing tape ends do
not extend into the tube. It may block the ports and affect the air supply to
the actuator.

Document No.:KE-4025-06 11/50
8. KITZ Optional Accessories
The following are recommended standard accessories for KITZ B Series actuators.
For other accessories, please contact KITZ.
Accessories & Code Specifications Remarks
LS
LS-F
AC:
DC:
AC:
DC:
10A/125V 10A/250V 10A/480V
0.8A/115V 0.4A/230V
5A/125V 5A/250V
0.8A/125V 0.4A/250V
Limit Switch
LS Weather-proof
LS-F Explosion-proof Contact circuit: 2-Circurt double break
For initiating electric signals to check open or
close position of the valve;
A separate limit switch is recommended for each
of open and close indication.
Solenoid Valve
SOV Weather-proof
SOV-F Explosion-proof
Connecting pipe
thread:
Working pressure:
Orifice diameter:
Electric source:
Rc 1/4
0〜0.97MPa
6mm
100V/50Hz 100V60Hz
110V/60Hz 200V50Hz
200V60HZ 220V/60Hz
Flow switching over air flow by electric signal
4-way solenoid valves for double-action actuators,
4-way solenoid values for spring-return actuators,
with one OUT port plugged, or 3-way solenoid
valves used.
Air Filter-Regulator
F+R
(Complete with pressure gauge)
Connecting pipe
thread:
Working pressure:
Rc 1/4,1/2
Max. inlet pressure;
0.97MPa
Max. outlet pressure;
0.04MPa〜0.83MPa
(8〜120psi)
For removing moisture, water and other foreign
objects form operating air and for regulating air
pressure at a desire level.
Speed Controller
SP Connecting pipe thread:
Operation pressure:
Rc 1/8,1/4,1/2
0.97MPa max. For reducing actuator operating speeds.
Quick Exhaust Valve
QE Connecting pipe thread:
Working pressure:
Rc 1/4,1/2
0.97MPa max
For increasing actuator operation speeds; With
spring-return actuators, speed increase is possible
only in spring-return direction.(Usable only for
actuators without positioners.)
Valve Positioner
P
(Complete with pressure gauge)
Connecting pipe
thread:
Supply pressure:
Signal pressure:
Signal Current
Air consumption:
Rc 1/4
(pressure gauge: Rc 1/8)
0.3˜0.7MPa (43˜100psi)
0.02˜0.1MPa (3˜15psi)
4˜20mA
20Nl/min. max.
(at supply pressure
0.5MPa)
For operating actuators at any desired position,
with the flow rate controlled by a valve: Valve
positioner may be mounted on both double-action
and spring-return actuator. With use of valve
positioners, flow rate may be stably controlled.
Both air-to-open and air-to-close actuation
modes can be obtained by simply reversing air.
Silencer
K Connecting pipe thread:
Working pressure:
Rc 1/8,1/4,1/2
0.90MPa max. For reducing air exhaust noise in solenoid valve: To be installed in the exhaust port of a solenoid valve.
Air Filter
F Connecting pipe thread:
Working pressure:
Rc 1/4,1/2
0.97MPa max. For removing moisture, water and other foreign objects from operating air.
Lubricator
L Connecting pipe thread:
Working pressure:
Recommended oil:
Rc 1/4,1/2
0.97MPa max.
Turbine oil ISO VG32
equivalent
Although KITZ B Series actuators and their
standard solenoid valves are designed for no need
of lubrication, when other solenoid valves are used,
or when actuators are subjected to high operating
frequency for long periods of time, lubrication is
recommended.
Pressure Equalizing
Valve
C
Connecting pipe
thread:
Working pressure:
Rc 1/4
1.37MPa max. For equalizing internal air pressure to atmospheric pressure to manually operate actuators.

Document No.:KE-4025-06 12/50
9. Mounting Valve-Actuator Units on Pipe
 Check the valve and actuator for possible damage, bolt loosening or other
failures caused during transportation or storage.
 KITZ B Series actuators assembled with KITZ valves can be mounted on the
horizontal or vertical piping, or at any angle, depending on the piping or
operational convenience. However, the air filter-regulator must be always
horizontally positioned against the ground.
 To use an automated valve with a positioner for control services, specify
the piping positions when ordering the product. If the piping position is
changed, the control position of the valve should be re-adjusted. Contact
KITZ for the operation manual for adjustment.
 When a positioner is used for piping which vibrates, controllability may be
impaired due to the resonance of the inside parts. Use supporters and
support stands to firmly hold the valve and actuator, especially in size 5 or
above of BS/BSW actuators, and minimize the influence of vibration (See
Fig. 12).
 Allow sufficient space around the unit mounted on the pipe for convenience
of subsequent maintenance or servicing work. A space of 300 mm upward,
500 mm downward and 300 mm each for the right and left is recommended.
 ‐20℃ to +60℃ is the recommended range of applicable atmospheric
temperature. Take appropriate insulating or cooling measures for installation
in low or high temperatures.
 Take appropriate measures when the unit is installed in a corrosive
(sulfurous acid gas, chlorine gas, etc.) or dusty environment.
 Ensure that valves are free from rust. Particularly when cast iron or cast
steel valves are used for water supply line, rust may be generated and get
stuck to the seat surfaces of the valve.
 BS and BSW actuators have breathing ports to discharge the internal
residual air to the atmosphere. A dust cap is installed on the breathing port.
Remove the dust cap before running the automated operation. If the dust
cap is not removed, actuator speed may become slow. If an exhaust port of
the actuator which is installed outdoors is positioned horizontally to the
ground, fit an elbow and a nipple to the exhaust port to prevent the
intrusion of rainwater (See Fig.13).
 The delivered KITZ B Series actuators and valves are properly assembled in
the predetermined open and close positions. Do not disassemble and
change the valve open and close positions. It may cause an inconsistency
between the actual valve operating position and the valve position indicator.

Document No.:KE-4025-06 13/50
10 Automated Operation
KITZ B Series actuators are designed for operating at the pressure ranging from 0.3MPa (40psi) to 0.7MPa
(100psi) and the standard operating pressure is set to 0.4MPa (60psi) for trouble-free operation, or use the
product within the pressure range specified at the time of order placement. Operating media must be
compressed air or Nitrogen gas.
 Be sure to use filtered and clean operating media for trouble-free operation. This is
particularly important if the product is used in cold and freezing climates.
 Full open the valve and air-blow the valve after installation is completed to thoroughly
remove the internal residues.
 DO NOT operate the valve during air-blow.
 Operate actuators manually a few times before starting automated operation and
check that the system has no failure or malfunction.
 Before starting a normal operation, check the following:
-No leakage from the air tubing (Use soap solution.)
-Adequate line voltage of the solenoid valve
-Sufficient air supply (Use air filter-regulator)
-Adequate operating pressure
-Adequate operating speed, which may be adjusted with a speed controller.
-Check the specified valve operating position according to the change of the
specific signal, when a positioner is provided. (Contact KITZ for adjustment of
positioner.)
-If the actuator has not been operated for 3 months or longer, or when the
actuator is operated for the first time, the operation torque may exceed the
specified torque. In this case, manually operate the valve a few times as a
preparatory operation.
(Type BS actuators cannot be manually operated. Please specify Type BSW
actuators.)
Support
Supporter
Supporter
Breathing port Nipple
Elbow
Fig. 12 Fig. 13

Document No.:KE-4025-06 14/50
11. Manual Operation
11.1 Type B (Double Action Type)
Type B-0 to B-4 actuators can be manually opened or closed by turning an operating device such as a spanner
wrench or lever handle properly fitted to the top of the shaft (Fig. 14). Turn the shaft clockwise to close the
valve and counterclockwise to open the valve.
 Before energizing Type B actuators, make sure to remove the spanner wrench or lever
handle used for manual operation. Starting the operation without removing such a
manual operating device is extremely dangerous
● Before operating a Type B actuator manually, open the pressure equalizing valve to
discharge the residual air from the actuator housing to the atmosphere. Residual air will
disturb the manual operation of the actuator.
● Ensure to securely fit the operating device to the top of the shaft of Type B actuator
for manual operation.
Manual operation with a spanner wrench or a lever handle is not available for Type B-5 to B-7 actuators.
Please order an actuator with manual operation unit if you need manual operation for these actuators.
Top of the shaft
Fig. 14
Actuator
Manual operation unit
Valve

Document No.:KE-4025-06 15/50
Parts Construction of B-5 to B-7 Actuators Manual Operation Unit
1 Gear case
2 Gear cover
3 Shaft
9 Handle
35 Hexagon headed bolt
45A O ring
45B O ring
45C O ring
45D O ring
45E O ring
45F O ring
47 Thrust bearing
48A Snap ring
48B Snap ring
60A Key
60B Key
76 Thrust bearing
85 Plug
94 Hexagon headed bolt
97 Indicator
110 Pin assembly
116 Spindle
124A Spring pin
124B Spring pin
135A Worm wheel
135B Worm
183 Chain
888 Hook
Some parts are different depending on the type of the manual operation unit.
(Manual operation unit for B-5 is illustrated.)

Document No.:KE-4025-06 16/50
Manual Operation Method of B-5 to B-7 Actuators Manual Operation Unit
 DO NOT insert your finger in pin hole of the manual operation unit. A strong
force is applied to the internal parts.
 DO NOT operate the valve automatically while a pin is inserted into the pin
hole. It may damage the manual operation unit.
 Insert the pin into the pin hole completely for manual operation. The manual
operation unit will be damaged if the pin is inserted halfway.
 When the valve is operated automatically, make sure to insert a plug into the
pin hole. Without plug, rainwater, dust, etc will enter the manual operation
unit and corrode the interior.
(1) Manual Operation
① Stop supplying air to the actuator.
② Open the pressure equalizing valve.
③ Remove the plug.
④ Adjust the indicator position to the pin hole by rotating the handle.
⑤ Insert the pin into the pin hole completely.
⑥ Operate the valve with the handle.
(2) Automated Operation
① Remove the pin form the pin hole.
(If the pin is not easily removed, rotate the handle a little to free the pin.)
② Insert the plug into the pin hole.
③ Close the pressure equalizing valve.
④ Supply air to the actuator.

Document No.:KE-4025-06 17/50
Troubleshooting of the manual operation unit
Trouble Possible Causes Remedial Measures
Not
automatically
operated
① Operate the valve with
the pin is inserted into
the pin hole.
② The pressure equalizing
valve is opened.
③ No air is supplied.
① Remove the pin from the pin hole and
insert a plug into it.
② Close the pressure equalizing valve.
③ Supply air to the actuator.
Automated
operation
The operation
speed is slow.
① Malfunction of the valve
② Malfunction of the
actuator
③ Air pressure is low.
④ Excessive throttling of
speed controller
⑤ Corrosion of internal
parts
① Disassembly/check/cleaning the valve
and replacement of valve seats
② Disassembly/replacement of actuator
parts or replacement of the actuator
③ Readjustment of the filter regulator
④ Readjustment of the speed controller
⑤ Replacement of the manual operation unit
Not manually
operated
① The pin is not inserted
into the pin hole.
② Air is supplied to the
actuator.
③ A pressure equalizing v
alve is closed.
① Insert the pin into the pin hole completely.
② Stop supplying air to the actuator and
open the pressure equalizing valve.
③ Open the pressure equalizing valve.
The pin cannot
be inserted
into the pin
hole.
① Indicator is not adjusted
to the pin hole.
② A pin hole on a worm
wheel and a pin hole on a
shaft are not aligned.
③ Foreign objects are stuck
on the pin
④ The pin is deformed.
① Adjust the indicator to the pin hole
rotating handle.
② Adjust the pin hole on the worm wheel
and the pin hole on the shaft by rotating
the handle little by little.
③ Clean the pin.
④ Replace the pin.
Manual
operation
Impossible to
remove the pin
from the pin
hole.
① The pin is caught in the
internal part.
② Air pressure is supplied.
① Free the pin from the internal parts by
rotating the handle little by little.
② Stop supplying the air.