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.