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Kitz 3B Series Operation Manual

Pneumatic valve actuators
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Document No.: KE-4031-02
 
 
KITZ 3B Series Pneumatic Valve Actuators
Thank you for choosing KITZ products.
For safe and trouble-free function and performance of
the product, ensure to read and understand all items
of this manual before valve mounting and operation.
Keep this manual in a convenient place for your valve
operators' easy access.
Operation Manual
For

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Summary of Contents for Kitz 3B Series

  • Page 1   Document No.: KE-4031-02 Operation Manual KITZ 3B Series Pneumatic Valve Actuators Thank you for choosing KITZ products. For safe and trouble-free function and performance of the product, ensure to read and understand all items of this manual before valve mounting and operation.
  • Page 2 Document No.: KE-4031-02    This manual applies to the KITZ 3B Series Pneumatic Valve Actuators.  For actuators of automatically operated value, refer to the operation manual of relevant  actuators prepared by the manufacturers.  CAUTION AND WARNING  To ensure safe and trouble-free function and performance of the product, please read all  items of this manual before handling, mounting and operation of the units.    The items listed here are indicated to prevent personal injury and product damage.      Please follow the cautions described here.    The signal words “WARNING” and “CAUTION” are defined as follows:    Indicates an imminently hazardous situation which, if not avoided, will  result in death or serious injury.    Indicates a potentially hazardous situation which, if not avoided, could  result in minor or moderate injury and product damage.            Indicate to call attention of an action.    Indicate prohibition of an action.    Indicate mandatory implementation of an action      NOTES TO USERS  This manual is designed to show an appropriate usage of products for transportation, storage,  installation, operation and maintenance.  Be sure to read the manual before starting any of transportation, storage, installation, operation,  maintenance, and handling valves.     ...

  • Page 3: Table Of Contents

      C O N T E N T S Page 1. Attentions of user’s system design ........................1 2. Features of the 3B Series Actuators........................1 3. Product Type and Product Indication Configuration................2 4. External Shape/Major Dimensions........................2 5. Actuator Specifications ...............................3 6. Driving Mechanism................................4 7.

  • Page 4: Attentions Of User's System Design

      Features of the 3B Series Actuators The KITZ 3B Series actuators are pneumatic actuators which are capable of controlling the opening of the valve in three positions, namely fully open, half open and fully closed positions. Three types of actuators, the double-action, the spring-return, and the spring-return with manual override are provided as standard equipment.

  • Page 5: Product Type And Product Indication Configuration

    Document No.: KE-4031-02  Page: 2/34    Product Type and Product Indication Configuration Product type Actuator product indication Double-action type Spring-return type Spring-return type with manual operation equipment 3BSW 3 positions (fully open, half-open, fully closed) B Series actuator Operation category No mark ⇒ Double-action mechanism With S ⇒...

  • Page 6: Actuator Specifications

    Document No.: KE-4031-02  Page: 3/34    [Type <3BSW> spring-return with manual [Type <3BS> spring-return actuator] operation equipment actuator] Major dimensions Product BREATHING SUP.PORT type PORT 3BS(W)-1 Rc1/4 Rc1/8 3BS(W)-2 Rc1/4 Rc1/8 3BS(W)-3 Rc1/4 Rc1/4 3BS(W)-4 Rc1/2 Rc1/4 Note: The dimensions of W1/W2 include accessory devices such as solenoid valve, etc. Actuator Specifications Operation type Double-action...

  • Page 7: Driving Mechanism

    Document No.: KE-4031-02  Page: 4/34    Driving Mechanism [Type <3B> double-action actuator] The fully closed position The fully closed position When both solenoid valves 1 and 2 are de-energized, the air pressure passes through solenoid valve 1 and enters the cylinder chamber V2 and V4. The air pressure in the cylinder chamber V2 moves the small piston on the right to the right end, and the actuator output...
  • Page 8 Document No.: KE-4031-02  Page: 5/34    [Type <3BS/3BSW> spring-return actuator] (The figures show Type 3BS actuator.) The fully closed position Piston a  Piston b  The fully closed position When both solenoid valves 1 and 2 are de-energized, air pressure in the cylinder chambers V1 and V2 is exhausted from the solenoid valves 1 and 2, and then the disk moves to the fully closed position.

  • Page 9: Actuation Type (Time Chart)

    Document No.: KE-4031-02  Page: 6/34    7. Actuation Type (Time Chart) By switching the two solenoid valves, the actuator provides the following two types of actuation. SOV in the table of actuation pattern is an abbreviation for a solenoid valve. Open at the second stage/closed at the second stage Fully closed (1) ⇒...

  • Page 10: Characteristics Of The Output Torque

    Document No.: KE-4031-02  Page: 7/34    Open at the first stage/closed at the first stage Fully closed (1) ⇒ fully open (2) ⇒ fully closed Open Half- open [Actuation pattern] SOV1 SOV2 Valve position Time De-energized De-energized Fully closed Closed Energized De-energized Fully open t1-t2 De-energized De-energized...

  • Page 11: Air Consumption

    Document No.: KE-4031-02  Page: 8/34    9. Air Consumption ①  Supply the actuator clean and dry air that has been filtered to remove dust and moisture. Air with high moisture content is liable to cause malfunctions, such as corrosion to the inside of the cylinder. ② ...

  • Page 12: Transportation And Storage

    Document No.: KE-4031-02  Page: 9/34    10. Transportation and Storage     ①  Don't store actuators in corrosive atmospheres such as sulfur dioxide gas or  chloric gas. Actuators may rust in the corrosive atmospheres.    ②  Overloading actuators and valves must be always prevented. Don't place any    other objects on them, or don't step on them.    ③  Actuators and valves are prodded with dust-free protectors. Don't remove  these protectors until you are ready for mounting them on pipes.    ④  Store actuators and valves in cool and dry. Corrosion-free environment to  keep them and valves rust-free and prevent their malfunction,  although  surfaces are appropriately finished for primary protection.    ⑤  For transportation handling or mounting of actuator-valve units, use ropes or  straps as illustrated below. This is particularly important for handling Size 3  and larger actuators.        ⑥  Handle the units with extreme care to prevent damage. This caution is  important when actuators are equipped with solenoid valves and other  accessories, or provided with copper tubes for air supply.     ...

  • Page 13: Mounting Valves On Pipe

    Document No.: KE-4031-02  Page: 10/34    11. Mounting Valves on Pipe For information on the handling of valves with the 3B Series actuator mounted, please refer to our catalog “KITZ Ball Valve No. J-201” and “KITZ Butterfly Valve No. J-230.”   ①  Check valves and actuators to detect possible damage, bolt loosening or ...
  • Page 14 Document No.: KE-4031-02  Page: 11/34    ⑨  If an exhaust hole of the actuator installed outdoors is positioned  horizontally facing the open air, fit an elbow and nipple or install a flexible  fitting into the exhaust hole to protect intrusion of rainwater.    Nipple Elbow   ⑩  If you have received KITZ factory-mounted valve-actuator units, which  were assembled according to the predetermined orientation for valve  open or close position, don't change such an orientation. It may cause    incorrespondence between the actual valve operating position and the  external position indication.   ...

  • Page 15: Air Piping And Electric Wiring For Actuators

    Document No.: KE-4031-02  Page: 12/34    12. Air Piping and Electric Wiring for Actuators ①  Be sure to turn off the power when you connect the electric wiring. If this work is conducted while the power is on, you may become electrocuted. ②  After you have completed the electric wiring, be sure to close the lid of the terminal box and secure it with screws as it was before.

  • Page 16: Optional Accessories For Actuators

    Document No.: KE-4031-02  Page: 13/34    13. Optional Accessories for Actuators Filter regulator: 1 pc Standard specification: CKD manufactured 7019 type/ SMC manufactured AW type Manufacturer standard type (relief type) Product type B7019-2C-GB AW30-02BG Actuator size common with 2 to 4 3B/3BS/3BSW Max. operating 1.0 MPa 1.0 MPa pressure...
  • Page 17 Document No.: KE-4031-02  Page: 14/34    Silencer: 3 pcs Standard specification: Koganei Corp. manufactured KM type (compact type) Common to the entire 3B Series Product type KM-22 Stress area 21 mm Operating pressure 0 to 0.9 MPa range Sound deadening 18db effect Ambient environment ＋5 to ＋60°C...

  • Page 18: Automatic Operation

    The standard operating pressure is 0.39 Mpa in the default setting while the operating pressure range of the 3B Series actuators is 0.39 to 0.69 MPa. If you specified the operating pressure when you placed the order, you need to operate the product at the specified pressure.

  • Page 19: Manual Operation

    Document No.: KE-4031-02  Page: 16/34    15. Manual Operation   Be sure to remove the lever handle and suchlike used for manual operation of Type 3B actuators from the shaft before starting automatic operation. If automatic operation is performed while a lever handle or suchlike remains mounted, it may fly off and cause a serious injury.

  • Page 20: Adjustment Of The Openings

    Adjustment before shipping from the factory (1) 3B Series actuators shipped from the company have been adjusted at the fully open, fully closed, and approx. 30° open positions. (2) If you adjust the opening by yourself after the product is delivered, follow the procedures given below.
  • Page 21 Note 3 Note 3: Please contact the company if you require information on valves with a nominal diameter of 250 and 300 for class 16/20 of KITZ DJ Series. [Adjustment of adjuster bolt when fully open] (1) Supply air pressure of 0.39 MPaG to air port O at the open side to move the piston rod until it contacts the adjuster bolt at the cylinder side.
  • Page 22 Document No.: KE-4031-02  Page: 19/34    Spring-return actuators (3BS-1 – 4)/Spring-return with manual operation equipment (3BSW-1 – 4) [Adjustment of stopper bolt at fully closed position] (1) Loosen the locknut <133A> without supplying operation air. (2) Measure the amount of overlap ℓ between the seat and ball in the case of a ball valve, and measure the difference between A and B in the case of a butterfly valve, and make adjustments to comply with the values in Table 1 and Table 2.
  • Page 23 Document No.: KE-4031-02  Page: 20/34    [Adjustment of stopper bolt for the half-open position] When you adjust the half-open position of spring-return actuators (Type 3BS-1 – 4 and Type 3BSW-1 – 4), be sure to perform adjustments without supplying any operation air. If the adjuster bolt is loose while operation air is supplied, internal parts might become loose and come off.

  • Page 24: Inspection

    (See “11. Mounting Valves on Pipe” in this manual.) ⑧ For Type 3BSW actuators, regularly apply grease to the threaded part of the spindle <123> to prevent it from seizing with the nut <49>. (KITZ standard: Shell Alvania EP2) ● ...

  • Page 25: Disassembly And Reassembly

    (KITZ standard: LOCTITE No. 262) When replacing an O-ring, use an appropriate O-ring by referring to “19. Replacement O-Rings for the 3B Series” in this manual. When mounting sealing parts, be careful not to scratch the surface of the sealing parts.
  • Page 26 Document No.: KE-4031-02  Page: 23/34    Disassembly For safety purposes, disassemble the actuator where there is a lot of space and where there is no dirt or dust. When you remove an air pipe or suchlike from the cylinder, cover the air supply opening of the cylinder and air pipe openings with a cloth, etc.
  • Page 27 When assembling the nuts <13A, 13B>, be sure to remove oil from the threads of the piston rod <103> and nuts <13A, 13B> and apply bonding agent to prevent the screws from loosening. (KITZ standard: LOCTITE No. 262) A key <60> is provided to fasten the scotch yoke at the center of the shaft. Be careful not to lose it. ...
  • Page 28 Document No.: KE-4031-02  Page: 25/34    Type 3B-1 – 4 Actuator  ...
  • Page 29 <103>, stopper bolt <132A>, and nuts <13A>, <13B> and <13C>, and then apply bonding agent to prevent the screws from loosening. (KITZ standard: LOCTITE No. 262) A key <60> is provided to fix the scotch yoke at the center of the shaft. Be careful not to lose it. ...
  • Page 30 (3) Apply high-quality lubricant equivalent to NBR and PTFE coating to the O-ring grooves, cylinder internal surface, and all sliding parts and areas. (KITZ standard: Shell Alvania EP2) (4) Apply liquid gasket to the contact faces between the housing <1>, housing...
  • Page 31 Document No.: KE-4031-02  Page: 28/34    Type 3BS-1 – 4 Actuator  ...
  • Page 32 <103>, stopper bolt <132A> and nuts <13A>, <13B> and <13C>, and then apply bonding agent to prevent the screws from becoming loose. (KITZ standard: LOCTITE No. 262) A key <60> is provided to fix the scotch yoke at the center of the shaft. Be careful not to lose it. ...
  • Page 33 (3) Apply high-quality lubricant equivalent to NBR and PTFE coating to the O-ring grooves, cylinder internal surface and all sliding parts and areas. (KITZ standard: Shell Alvania EP2) (4) Apply liquid gasket to the contact faces between the housing <1>, housing cover, rod guide and cylinder.
  • Page 34 Document No.: KE-4031-02  Page: 31/34    Type 3BSW-1 – 4 Actuator  ...

  • Page 35: Replacement O-Rings For The 3B Series

    Document No.: KE-4031-02  Page: 32/34    19. Replacement O-Rings for the 3B Series Actuator type 3B-1 3B-2 3B-3 3B-4 Q’ty Part Part O-ring Product O-ring Product O-ring Product O-ring Product description size code size code size code size code 8710- 8710- 8710- 8710-...

  • Page 36: Troubleshooting

    Document No.: KE-4031-02  Page: 33/34    20. Troubleshooting Problem Cause Remedy The supply air (1) Compressor malfunction or Check the compressor and repair the pressure does insufficient capacity. piping system. not reach the (2) Air leakage from the pipe connecting Repair the piping system. specified from the compressor to the actuator.

  • Page 37: Emergency Call For Technical Assistance

    Document No.: KE-4031-02  Page: 34/34    22. Emergency Call for Technical Assistance When requesting repair, etc. of the product concerned, confirm the following matters, and  then, contact your dealer or nearest business office of our company.     ◆ Date of purchase / installation      ◆ Name of store from which the product is purchased      ◆ Product name (Product symbol / bore)      ◆ Fluid type / pressure / temperature      ◆ Frequency of use / operation conditions      ◆ Environment in the piping portion    ◆ Details of failure, repair request, etc.      Company name, address of installation place, phone number, division in charge and name  of person in charge     ...

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