Flowserve Valtek Valdisk User Instructions
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Flowserve Valtek Valdisk User Instructions

High-performance butterfly control valve
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USER INSTRUCTIONS
Valtek Valdisk
High-Performance Butterfly
Control Valve
These instructions must be read prior to installing, operating and
maintaining this equipment.

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Summary of Contents for Flowserve Valtek Valdisk

  • Page 1 USER INSTRUCTIONS Valtek Valdisk High-Performance Butterfly Control Valve These instructions must be read prior to installing, operating and maintaining this equipment.
  • Page 2 Valtek Valdisk High Performance Butterfly Control Valves The Valtek Valdisk, double offset, high performance butterfly control valve is a rugged, compact, lightweight valve used in a wide range of applications plant-wide. It provides high-capacity flow at a low pressure drop. ANSI/FCI Class IV and VI shut off are achievable with metal and polymer seats respectively.
  • Page 3 Valtek Valdisk High-Performance Butterfly Control Valves Copyright All rights reserved. No part of these instructions may be reproduced, stored in a retrieval system, or transmitted in any form or by any means without prior permission of Flowserve Corporation. Document Version...

  • Page 4: Table Of Contents

    Valtek Valdisk High-Performance Butterfly Control Valves CONTENTS Scope of manual ..........................................5 Disclaimer ........................................... 5 Intended Use ........................................... 5 Product Identification ........................................5 Valtek Valdisk Modification ......................................5 Safety .............................................. 6 General Hazard Sources ......................................6 Responsibility of the Operating Company .................................. 6 Qualified Personnel ........................................

  • Page 5: Scope Of Manual

    Valtek Valdisk High-Performance Butterfly Control Valves 1 Scope of manual The Valtek Valdisk handles a wide variety of applications, while offering high flow capacity. It consists of the body, bonnet, trim, transfer case and actuator. The following user information covers Flowserve Valtek Valdisk,...

  • Page 6: Safety

    Valtek Valdisk High-Performance Butterfly Control Valves 5 Safety  Loads exceeding of 23kg (50 lb.) should only be lifted by appropriate mechanical means and in accordance with Safety terms – DANGER, WARNING, CAUTION and NOTICE - current local legislation or with the assistance of additional are used to highlight specific dangers and / or provide additional personnel.

  • Page 7: Design

    Packing The Valtek Valdisk packing boxes are designed to permit a wide 6 Design verity of packing configurations, including twin seal packing. Packing configurations are, Body The body may be lug style, wafer or integral (double) flange.

  • Page 8: Packaging, Transportation And Storage

    Selecting the proper fastener material is the responsibility of the lifting straps or hook through the yoke legs and outer end customer. Flowserve ‘s standard body bolting material is B7/2H. of the body. B8/8 (stainless steel) is optional for applications more than 800°...

  • Page 9: Commissioning

    Valtek Valdisk High-Performance Butterfly Control Valves Figure 4: Cross-Sections of Seat Retainer Configurations  Install valve in line by tightening opposite line bolts together  Fully close the valve before and during the installation in a minimum of 25% increments of the total recommended...

  • Page 10: Operation Test

    Check all air connections for leaks. 10.3 Ordering Spare Parts and Accessories 9.3 Start-up Use only Flowserve original spare parts. Flowserve cannot accept responsibility for any damages that occur from using Prior to start-up, check the control valve by following these spare parts or fastening materials from other manufactures.

  • Page 11: Recommended Maintenance Actions

    10.4 Recommended Maintenance Actions 11 Disassembly and Reassembly Look for signs of gasket leakage through body and line The Valtek Valdisk control valve is allowed to be disassembled and reassembled only by qualified staff - gaskets. Tighten flange bolting if necessary.
  • Page 12 Valtek Valdisk High-Performance Butterfly Control Valves Control valves are pressure vessels. Improper opening of the valve or actuator can result in bodily injury. Prior to disassemble and reassemble, we require, that you check the following conditions to reduce the risk of malfunction and safety-related incidents.

  • Page 13: Reassembly

    Damaged or dirty seat surfaces can On Valtek Valdisk valves supplied with seat retainer clips, cause excessive seat wear and high remove the seat retainer screws and retainer clips. Lift the torque requirements. Damaged disks should be replaced.
  • Page 14 Valtek Valdisk High-Performance Butterfly Control Valves Table 2: Lug style split shaft with dual seat parts list Item 117 Item Description Item 86 Item 109 Body (Lug Style Shown) * Item 80 Metal Seat Item 87 Soft Seatº Item 94...
  • Page 15 Valtek Valdisk High-Performance Butterfly Control Valves Table 3: Wafer style metal seat parts list Item 117 Item 109 Item Description Item 80 Item 86 Body (Wafer Style Shown) * Item 87 Item 51 Item 94 Metal Seat Item 88 Diskº...
  • Page 16 Valtek Valdisk High-Performance Butterfly Control Valves Position the disk in the body, making sure it will rotate in Typical packing configurations are shown in Figure 3. In the the proper direction with respect to the body’s internal disk uncompressed state, the packing spacer above the packing stop.
  • Page 17 Valtek Valdisk High-Performance Butterfly Control Valves position, secure the retainer or metal seat in place by 13. On large Valtek Valdisk valves supplied with seat retainer tightening the retainer clips and screws. This allows the screws, install the insert and retainer into the body with the seat to align with the disk, permitting tight shutoff.

  • Page 18: Troubleshooting Guide

    Valtek Valdisk High-Performance Butterfly Control Valves 12 Troubleshooting Guide Scenario Causes Remedies Failure of actuator O-ring Replace actuator stem O-ring Valve moves to failure position excessive air bleeding from transfer case Failure of sliding seal assembly Repair or replace sliding seal assembly...

  • Page 19: Returns And Disposal

    Contact your local Flowserve representative to obtain return authorization. 13.2 Disposal and Recycling Up to 95 % of the Valtek Valdisk control valve is metal. The remaining materials are synthetic rubber, polymers, elastomers, polytetrafluoroethylene (PTFE), graphite, paint, and lubricants.
  • Page 20 Valtek Valdisk High-Performance Butterfly Control Valves Annex A: Line Flange Bolting Specification Body Style Line Valve Pressure Bolt Integral Flange Wafer Size Class Size Length Length Length (in) (in) (in) (in) (in) 0.63 3.88 2.88 5.75 3.25 6.38 0.75 3.38 3.62...
  • Page 21 Valtek Valdisk User Instruction – VAIOM000286 EN Body Style Valve Line Bolt Pressure Integral Flange Wafer Size Size Class Length Length Length (in) (in) (in) (in) (in) 1.00 5.62 4.38 4.75 5.25 1.13 7.38 4.88 6.25 9.62 1.38 5.88 6.38 4.25...
  • Page 22 Flowserve Corporation has established industry leadership in the design and manufacture of its products. When properly selected, this Flowserve product is designed to perform its intended function safely during its useful life. However, the purchaser or user of Flowserve products should be aware that Flowserve product might be used in numerous application under a wide variety of industrial service conditions.

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