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TLV CT20 Instruction Manual

Electro-pneumatic control valve
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172-65742MA-01 (CT20/CT20D) 7 October 2021
Electro-Pneumatic Control Valve
CT20/CT20D
(for Valve Unit)
Copyright © 2021 by TLV CO., LTD.
All rights reserved

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Summary of Contents for TLV CT20

  • Page 1 172-65742MA-01 (CT20/CT20D) 7 October 2021 Electro-Pneumatic Control Valve CT20/CT20D (for Valve Unit) Copyright © 2021 by TLV CO., LTD. All rights reserved...

  • Page 2: Table Of Contents

    TLV EXPRESS LIMITED WARRANTY ......21 Service ................23 Introduction Thank you for purchasing the TLV electro-pneumatic control valve CT20/CT20D. This product has been thoroughly inspected before being shipped from the factory. When the product is delivered, before doing anything else, check the specifications and external appearance to make sure nothing is out of the ordinary.

  • Page 3: Safety Considerations

    The three types of cautionary items above are very important for safety: be sure to observe all of them as they relate to installation, use, maintenance and repair. Furthermore, TLV accepts no responsibility for any accidents or damage occurring as a result of failure to observe these precautions.
  • Page 4 When using this product, NEVER stand close to, or leave tools anywhere near, moving parts, such as the shaft. Contact with moving parts or objects becoming caught in moving parts could lead to injury or damage or other accidents. 172-65742MA-01 (CT20/CT20D) 7 Oct 2021...

  • Page 5: Specifications

    *Maximum allowable pressure (PMA) and maximum allowable temperature (TMA) are PRESSURE SHELL DESIGN CONDITIONS, NOT OPERATING CONDITIONS. **Valve No. is displayed for products with options. This item is omitted from the nameplate when there are no options. 172-65742MA-01 (CT20/CT20D) 7 Oct 2021...

  • Page 6: Configuration

    Nameplate (Valve Section: front / Actuator Section: back) Travel Indicator Scale Stem Bracket Clamps Drain Plug Actuator Stem Fixing Nut *Replacement parts are available only in the following kits: M = Maintenance Kit R = Repair Kit 172-65742MA-01 (CT20/CT20D) 7 Oct 2021...
  • Page 7 Nameplate (Valve Section: front / Actuator Section: back) Travel Indicator Scale Stem Bracket Clamps Drain Plug Actuator Stem Fixing Nut *Replacement parts are available only in the following kits: M = Maintenance Kit R = Repair Kit 172-65742MA-01 (CT20/CT20D) 7 Oct 2021...

  • Page 8: Installation

    4. Removing protective caps and seals Before installation, be sure to remove all protective seals and caps. (Found in two locations, on the product inlet and outlet.) Fig. 2 Hoisting the control valve ① ② ① ② CT20 CT20D 172-65742MA-01 (CT20/CT20D) 7 Oct 2021...
  • Page 9 If there is a problem in operation, determine the cause using the “Troubleshooting” section in this manual. 172-65742MA-01 (CT20/CT20D) 7 Oct 2021...

  • Page 10: Maintenance

    Gasket(s): Check for warping and damage (Graphite gaskets MUST be replaced if disassembled) Stuffing Box V-ring Packing: Check for warping or damage Valve Plug & Stem, Valve Seat: Check for damage or scratches Body, Valve Bonnet: Check for damages or corrosion 172-65742MA-01 (CT20/CT20D) 7 Oct 2021...

  • Page 11: Disassembly/Reassembly

    Remove the fixing nut connecting Consult the table of tightening the actuator and the valve bonnet torques and tighten to the proper while keeping the actuator stem in torque the raised position Fixing Nut Valve Bonnet Stem Bracket Clamps 172-65742MA-01 (CT20/CT20D) 7 Oct 2021...
  • Page 12 If the instructions given are not followed when reassembly is carried out, malfunctions such as insufficient lift (insufficient flow capacity) and/or insufficient closing force (valve leakage) may result: give the proper attention to the adjustment procedure Stem Connector Nut Locknut 172-65742MA-01 (CT20/CT20D) 7 Oct 2021...
  • Page 13 Fig. 4 Actuator Stem descends Stem Connector Nut NOTE: Be careful not to pinch Locknut your fingers Fig. 5 Travel Indicator Scale Mounting Bolt Stem Bracket Clamps Travel Indicator Scale Travel Indicator Scale Mounting Bolt 172-65742MA-01 (CT20/CT20D) 7 Oct 2021...
  • Page 14 Be careful Pull up the stem not to pinch connector nut and your fingers the valve stem Fig. 5 Travel Indicator Scale Stem Bracket Mounting Bolt Clamps Travel Indicator Scale Travel Indicator Scale Mounting Bolt 172-65742MA-01 (CT20/CT20D) 7 Oct 2021...
  • Page 15 Reinsert Stuffing Box Washer/ Pull up and out Stuffing Box Spring Guide Bushing Stuffing Box V-ring Packing Stuffing Box Washer Stuffing Box Spring Cut view of Stuffing Box V-ring Packing 172-65742MA-01 (CT20/CT20D) 7 Oct 2021...
  • Page 16 Replace with a new gasket; make sure that the Gasket clean sealing surfaces gasket does not protrude from the housing in the body; DO NOT coat with anti-seize Valve Bonnet Section Valve Bonnet Valve Plug Gasket Body Section 172-65742MA-01 (CT20/CT20D) 7 Oct 2021...
  • Page 17 This procedure requires a special Over-tightening could result in tool; contact TLV for details damage to the valve seat and body; consult the table of tightening torques and tighten to the proper torque Valve Seat 172-65742MA-01 (CT20/CT20D) 7 Oct 2021...
  • Page 18 , other standards available. Torque values with sealing tape wrapped 3 to 3.5 turns around the threads NOTE: -Coat all threaded portions with anti-seize. -If drawings or other special documentation were supplied for the product, any torque given there takes precedence over values shown here. 172-65742MA-01 (CT20/CT20D) 7 Oct 2021...
  • Page 19 (The shape of the plug Back: Spring range, Cv value, etc. differs depend on the size and the Cv value) Valve Bonnet Gasket Valve Seat (A special tool is required for disassembly/ reassembly) Bolt Body Drain Plug 172-65742MA-01 (CT20/CT20D) 7 Oct 2021...

  • Page 20: Troubleshooting

    Check the valve plug Replace the valve plug and surfaces of the valve and valve seat valve seat. plug and valve seat Consider replacing with a valve plug and valve seat of a more durable material. 172-65742MA-01 (CT20/CT20D) 7 Oct 2021...

  • Page 21: Tlv Express Limited Warranty

    Subject to the limitations set forth below, TLV CO., LTD., a Japanese corporation (“TLV”), warrants that products which are sold by it, TLV International Inc. (“TII”) or one of its group companies excluding TLV Corporation (a corporation of the United States of America), (hereinafter the “Products”) are designed and manufactured by...
  • Page 22 WARRANTY NOT NEGATED HEREBY, AND ANY IMPLIED WARRANTY NOT NEGATED HEREBY, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, DO NOT COVER, AND NEITHER TLV, TII NOR ITS TLV GROUP COMPANIES WILL IN ANY EVENT BE LIABLE FOR, INCIDENTAL OR...

  • Page 23: Service

    Service For Service or Technical Assistance: Contact your TLV representative or your regional TLV office. In Europe: Tel: [49]-(0)7263-9150-0 Daimler-Benz-Straße 16-18, 74915 Waibstadt, Germany Fax: [49]-(0)7263-9150-50 Tel: [44]-(0)1242-227223 Units 7 & 8, Furlong Business Park, Bishops Cleeve, Gloucestershire GL52 8TW, U.K.

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Ct20d

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