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Kitz B Series Operation Manual

Pneumatic valve actuators
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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

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Summary of Contents for Kitz B Series

  • Page 1 Operation Manual 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...
  • Page 2 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. CAUTION AND WARNING For the safe use of the product, read all of the safety precautions listed in this manual before handling the product.

  • Page 3: Table Of Contents

    Driving Mechanism ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ Standard Technical Specifications ・・・・・・・・・・・・・・・・・・・・・・・・・・・ Cylinder Volume and Air Supply Requirement ・・・・・・・・・・・・・・・・・・ Air Tubing and Electric Wiring ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ KITZ Optional Accessories ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ Mounting Valve-Actuator Units on Pipe ・・・・・・・・・・・・・・・・・・・・・・・ Automated Operation ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ Manual Operation ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ Periodic Inspections and Maintenance ・・・・・・・・・・・・・・・・・・・・・・・・・...

  • Page 4: Note For User's System Design

    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.

  • Page 5: Storage And Handling

    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.

  • Page 6: Product Type And Code

    Document No.:KE-4025-06 3/50 3. Product Type and Code Ｂ Ｓ Ｗ Ｄ ① ② ③ ④ ① Driving Mechanism ④ Size Non ・・・ Double action type Ｓ ・・・ Spring return type ② Manual Override Non ・・・ No manual override Ｗ ・・・...

  • Page 7: Driving Mechanism

    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.
  • Page 8 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.

  • Page 9: Standard Technical Specifications

    Operating media Compressed instrumentation air Standard operating pressure 0.4MPa; factory preset pressure 0.3MPa to 0.7MPa Pressure supply range 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°)

  • Page 10: Cylinder Volume And Air Supply Requirement

    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 Fig. 6 Cylinder Type-size 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...
  • Page 11 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”...

  • Page 12: Air Tubing And Electric Wiring

    Document No.:KE-4025-06 9/50 7. Air Tubing and Electric Wiring 7.1 Air Tubing for Actuators Solenoid valve energized to close valve Type B-0 to 7 Solenoid valve energized to open valve Fig. 8 Pressure Pressure equalizing valve equalizing valve Air supply Air supply 4-way solenoid valve 4-way solenoid valve...
  • Page 13 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.

  • Page 14: Kitz Optional Accessories

    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 Limit Switch 10A/125V 10A/250V 10A/480V For initiating electric signals to check open or Weather-proof 0.8A/115V 0.4A/230V...

  • Page 15: 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.

  • Page 16: Automated Operation

    Support 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.

  • Page 17: Manual Operation

    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.
  • Page 18 Document No.:KE-4025-06 15/50 Parts Construction of B-5 to B-7 Actuators Manual Operation Unit Gear case Gear cover Shaft 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...
  • Page 19 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.
  • Page 20 Document No.:KE-4025-06 17/50 Troubleshooting of the manual operation unit Trouble Possible Causes Remedial Measures ① Operate the valve with ① Remove the pin from the pin hole and the pin is inserted into insert a plug into it. the pin hole. ②...
  • Page 21 Document No.:KE-4025-06 18/50 Spring Return Type 11.2 Type BS-0 to BS-7 Type BS actuators cannot be manually operated due to the spring in the actuator. If a manual operation is required, select Type BSW actuators. 11.3 Type BSW-0 to BSW-7 Turning the handwheel counterclockwise opens the valve and turning the handwheel clockwise closes the valve (Fig.

  • Page 22: Periodic Inspections And Maintenance

    (4) Many pieces of O rings are used for the critical sealing areas of the B Series actuators. O rings are subject to frictions with moving parts such as pistons, which reduce the life of O rings and the consumables.
  • Page 23 (Fig. 12). For Type BSW actuators, lubricate the threaded parts of the spindle periodically with KITZ standard grease “Shell Alvania EP2” to prevent fixing of the spindle to the stopper. Check the expiration date for use of the partial stroke test device. Replace it before the expiration date.

  • Page 24: Troubleshooting

    Document No.:KE-4025-06 21/50 13 Troubleshooting Detected Trouble Causes Remedial Measures Failure of compressor or lack of Air pressure Inspect and repair the compressor capacity lower than the compressor as appropriate. specified. Air leakage from tubing. Inspect and repair the Failure of compressor compressor as appropriate.

  • Page 25: Disassembly And Reassembly

    Document No.:KE-4025-06 22/50 14. Disassembly and Reassembly Disassembly and reassembly method of the actuators differs depending on the actuator type. When disassembly of the actuator is required for maintenance or repair, follow the procedures described for each actuator type. DO NOT use compressed air when disassembling the cylinder. The cylinder may be suddenly ejected.
  • Page 26 O rings in acetone or other liquid cleaner longer than 10 minutes. Make them completely dust-free. Apply adequate amount of lubricant (KITZ standard Shell Alvania EP2) to the sliding parts, O ring grooves and internal surface of the cylinder.
  • Page 27 Document No.:KE-4025-06 24/50 Construction Details of Type B (Double Acting Type) Screw Fig. 16 Indicator Bolt Snap ring Adjust screw Thrust washer Packing Cylinder Washer Bolt Indicator plate Housing cover O ring O ring Bearing Piston Snap ring Thrust bearing O ring O ring Shaft...
  • Page 28 2. It is recommended to replace the piston O rings〈45A〉and rod guide O rings〈45E〉because they contact with sliding parts repeatedly. 3. Apply some lubricant (KITZ standard: Shell Alvania EP2) to O ring grooves, cylinder internal surface and all sliding parts.
  • Page 29 Document No.:KE-4025-06 26/50 ■Position Adjustment 1. According to the instructions in Chapter15, set the valve opening and closing positions correctly by adjusting the hexagon socket head cap screw〈132〉. 2. See Chapter 15 for details of adjustment. Assembly Diagram of Type B-0 Fig.
  • Page 30 Document No.:KE-4025-06 27/50 Type B-1 to 7 ,D6 and D7 ■Disassembly 1. Reduce the internal pressure to the atmospheric level and remove the tubing. 2. Remove the hexagonal bolts〈94> and disassemble the actuator from the bracket〈93〉. 3. Fit a lever handle or a wrench on the top of the shaft〈3〉and rotate it counterclockwise to draw the piston 〈177〉towards the housing〈1〉.
  • Page 31 2. It is recommended to replace the piston O rings〈45A〉and the rod guide O rings〈45E〉because they contact with sliding parts repeatedly. 3. Apply some lubricant (KITZ standard: Shell Alvania EP2) to O ring grooves, cylinder internal surface and sliding parts.
  • Page 32 Document No.:KE-4025-06 29/50 Assembly Diagram of Type B-1 to B-6 Fig. 18 Parts Parts Housing Bearing Cylinder 67C Bearing Shaft 67D Bearing Bolt Plate Connector Washer Bracket Bolt Bolt Indicator Bolt Indicator plate Bolt Piston rod Screw Cap Screw O ring O ring Rod guide 45D O ring...
  • Page 33 Document No.:KE-4025-06 30/50 B-7 Actuator Shaft Portion Fig. 19 Parts Shaft Bolt Bolt Bolt Thrust bearing 48A Snap ring Eye bolt 85B Plug Scotch yoke Housing cover Seal washer B-D6 Actuator Shaft Portion Fig. 20 Parts Shaft Bolt Bolt Thrust bearing 48A Snap ring Scotch yoke Housing cover...
  • Page 34 Document No.:KE-4025-06 31/50 Construction Detail of Type BS Screw Fig. 22 Snap ring Indicator Adjust screw Thrust washer Washer Bolt Indicator plate Packing Cylinder Housing cover Bolt Rod guide (A) O ring Bolt Bearing O ring Snap ring Piston O ring Shaft Snap ring Thrust bearing...
  • Page 35 Document No.:KE-4025-06 32/50 Type BS-0 A compressed heavy-duty spring is packed within the spring case of the Type BS actuators. The spring cover may be pushed out and cause personal injury if the tie rod used for fixing the spring case is loosened and removed. When disassembling the spring case, make sure to follow the instructions given in this manual.
  • Page 36 2. It is recommended to replace the piston O ring 〈45A〉because it contacts with the sliding parts repeatedly. 3. Apply some lubricant (KITZ standard: Shell Alvania EP2) to the O ring grooves, cylinder internal surface and sliding parts. 4. Apply some liquid gasket (KITZ standard: Three Bond 1206E) to the contact faces of the housing〈1〉, rod guide A <136A>, rod guide B <136B>, spring case <100>, spring cover <158>...
  • Page 37 Document No.:KE-4025-06 34/50 Assembly Diagram of Type BS-0 Fig. 24 Parts Parts Parts Parts Parts Housing Screw Tie rod Indicator plate 136B Rod guide Cylinder O ring Spring case 140A Cap screw Shaft O ring Bearing Piston rod 140B Cap screw O ring Bearing Spring...
  • Page 38 35/50 Type BS-1 to BS-6 For disassembly of Type BS-7 actuators, contact KITZ before disassembly. A compressed heavy-duty spring is packed within the spring case of the Type BS actuators. The spring cover may be pushed out and cause personal injury if the tie rod used for fixing the spring case is loosened and removed.
  • Page 39 1. For reassembly of actuators, reverse the disassembly procedures. Before attaching the piston nut〈13a〉, degrease the threaded portion of the piston rod <103> and the nut <13a> and apply some locking liquid (KITZ standard: LOCTITE No. 263) to prevent loosening.
  • Page 40 37/50 2. It is recommended to replace piston O ring〈45A〉because it contacts with the sliding parts repeatedly. 3. Apply some lubricant (KITZ standard: Shell Alvania EP2) to the O ring grooves, cylinder internal surface and sliding parts. 4. Apply some liquid gasket (KITZ standard: Three Bond 1206E) to the contact faces of the housing〈1〉, rod guide A <136A>, rod guide B <136B>, spring case <100>, spring cover <158>, housing cover <144>...
  • Page 41 Document No.:KE-4025-06 38/50 Assembly Diagram of Type BS - 1 to BS - 6 Parts Parts Fig. 26 Housing Bracket Cylinder Bolt Shaft Indicator Indicator plate Spring case Plate Piston rod Washer Spring Caution plate Bolt 132A Adjust screw Bolt 132B Adjust screw Screw...
  • Page 42 Document No.:KE-4025-06 39/50 Type BSW-0 A compressed heavy-duty spring is packed within the spring case of the Type BSW actuators. The spring cover may be pushed out and cause personal injury if the tie rod used for fixing the spring case is loosened and removed.
  • Page 43 2. It is recommended to replace piston O rings〈45A〉, which are subject to repeated contacts with sliding parts. 3. Apply some lubricant (KITZ standard: Shell Alvania EP2) to O ring grooves, cylinder internal surface and all sliding parts and areas.
  • Page 44 Document No.:KE-4025-06 41/50 4. Apply some liquid gasket (KITZ standard: Three Bond 1206E) to the contact faces of the housing〈1〉, rod guide A <136A>, rod guide B <136B>, spring case <100>, spring cover <158> and cylinder <2>. 5. After completion of actuator assembly, check the valve opening and closing positions and attached position indicator and mount the bracket〈93〉.
  • Page 45 Document No.:KE-4025-06 42/50 Type BSW-1 to BSW-6 For disassembly of Type BSW-7 actuator, contact KITZ before disassembly. A compressed heavy-duty spring is packed within the spring case of the Type BSW actuators. The spring cover may be pushed out and cause personal injury if the tie rod used for fixing the spring case is loosened and removed.
  • Page 46 Document No.:KE-4025-06 43/50 12. Remove the hexagonal cap screw〈35〉and carefully disassemble the cylinder〈2〉from the housing〈1〉not to scratch the internal surface coating. 13. Remove the hexagonal cap screw〈140C〉and disassemble the sub-assembly of guide〈108〉, guide cap〈78〉, bearing〈76〉and spindle〈123〉. 14. Remove the hexagonal nut〈13b〉and the spring retainer〈150〉. 15.
  • Page 47 3. Apply some lubricant (KITZ standard: Shell Alvania EP2) to O ring grooves, cylinder internal surface and sliding parts. 4. Apply some liquid gasket (KITZ standard: Three Bond 1206E) to the contact faces of the housing 〈1>, rod guide A <136A>, rod guide B <136B>, spring case <100>, spring cover <158>, housing cover〈144〉 and cylinder〈2〉.
  • Page 48 Document No.:KE-4025-06 45/50 Assembly Diagram of Type BSW - 1 to BSW - 6 Fig. 30 Parts Parts Housing Bolt Cylinder Connector Shaft Bracket Handwheel Bolt Cap screw Indicator Indicator plate Spring case Plate Piston rod Washer Guide Spring Bolt Caution plate Bolt Spindle...

  • Page 49: Adjustment Of Valve Operating Positions

    3 to 4 3 to 4 4 to 5 4 to 5 (*1) Set the difference, [A minus B], to zero for KITZ UB Series and SHB Series 5 to 6 butterfly valves. 5 to 7 (*2) Contact KITZ for information on Size DN250 and DN300.

  • Page 50: Product Warranty

    Failures and damage which occur as a result of modification/addition carried out by persons other than KITZ employees and service engineers designated by KITZ. Failures and damage which occur as a result of aged deterioration (rusting, color fading, chemical change, etc.)

  • Page 51: Consumables

    Document No.:KE-4025-06 48/50 17. Consumables ●NBR O Rings for KITZ B Series Actuators Refer to the following tables for replacement of O rings. Shaft O ring dimensions were changed in November 1998. Refer to the table on the next page.
  • Page 52 Note) Piston O ring〈45D〉for B/BS/BSW-1 to 6 should not be replaced, unless it directly causes leakage. When replacement is required, degrease the threaded portion of the piston rod and the nut and apply some locking liquid (KITZ standard: LOCTITE No.263) to the threaded portion to prevent loosening.

  • Page 53: Contact For Technical Assistance

    18 Contact for Technical Assistance When requesting repair, etc. of the product, check the following items and contact your dealer or the nearest KITZ sales office. ◆ Date of purchase / installation ◆ Name of the store from which the product is purchased ◆...

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