Download
Share
Print this page
  1. Manuals
  2. Brands
  3. AVK Manuals
  4. Control Unit
  5. 764 Series
  6. Field maintenance and instruction manual

AVK 764 Series Field Maintenance And Instruction Manual

Eccentric plug valve
Hide thumbs

Advertisement

Quick Links

Download this manual
AVK SERIES 764 - ECCENTRIC PLUG VALVE
FIELD MAINTENANCE AND
INSTRUCTION MANUAL

TABLE OF CONTENTS

EXPLODED ASSEMBLY / PARTS LIST
RECEIVING AND STORAGE
- INSTALLATION
- TESTING
- TOOLS
- MAINTENANCE PROCEDURES
WARRANTY
American AVK Company
An ISO 9001 registered company
- INSPECTION
- DISASSEMBLY FOR INSPECTION
- REASSEMBLY AFTER INSPECTION
Maintenance Manual Series 764
*Subject to change without notice. (rev. 01/19 A)

Advertisement

loading
Need help?

Need help?

Do you have a question about the 764 Series and is the answer not in the manual?

Questions and answers

Related Manuals for AVK 764 Series

Summary of Contents for AVK 764 Series

  • Page 1: Table Of Contents

    AVK SERIES 764 - ECCENTRIC PLUG VALVE FIELD MAINTENANCE AND INSTRUCTION MANUAL TABLE OF CONTENTS EXPLODED ASSEMBLY / PARTS LIST SAFETY INTRODUCTION / DESCRIPTION RECEIVING AND STORAGE INSTALLATION AND TESTING - INSTALLATION - TESTING OPERATION AND MAINTENANCE - TOOLS - OPERATION...
  • Page 2 page 1...
  • Page 3 Item No. Description Material ISO Flange Grey iron, ASTM A126, "B" Bolts Bonnet 304 Stainless steel Chain Set Zinc Plated steel Bonnet Gasket Body Grey iron, ASTM A126, "B" Hex Nut Zinc Plate, 304,316 Stainless steel Gland Ductile Iron, ASTM A536 V-Pack Plug Core Copper Alloy...

  • Page 4: Safety

    AVK’s products are designed to be fit for purpose and to a high reliability standard. This provides a safe, low risk product when used correctly for the purpose for which it was designed. However, this assumes that the equipment is used and maintained in accordance with this manual, and the user is advised to study it and to make it available to all staff that may need to refer to it.

  • Page 5: Introduction / Description

    INTRODUCTION / DESCRIPTION AVK eccentric plug valves are designed with built-in safety in every detail. Plug valves are used for isolation purposes in water and wastewater installations, for pump control shut-off and flow control applications. The plug is fully vulcanized with AVK’s own rubber compound (either EPDM or NBR) which, due to its sturdy design and double bonding vulcanization,...
  • Page 6 Typical Eccentric Plug Valve Installations When eccentric plug valves are mounted in a horizontal line, the recommended installation is with the plug rotating 90° upward to open. This orientation reduces the chance of solids preventing plug operation. Eccentric plug valves may be installed vertically;...

  • Page 7: Installation And Testing

    INSTALLATION AND TESTING NOTE: Consult local codes and standards for valve placement and spacing WARNING: All water lines must be isolated or depressurized and drained before installing or maintaining valves. Failure to do so may cause pressure to be released resulting in severe injury or death. INSPECTION PRIOR TO INSTALLATION: 1.
  • Page 8 INSTALLATION: ( cont. ) INSTALLATION: - Liquids without Suspended Solids and Clean Gases For liquids without suspended solids and clean gas application, the plug valve can be installed for both horizontal and vertical pipe orientations. LIQUIDS AND GASES: 1. Before installation, remove foreign material such as weld spatter, oil, grease, and dirt from the valve and pipeline. 2.
  • Page 9 LEVER OPERATED VALVES: A wrench head and lever (Figure 4) are also available for use for direct quarter-turn operation. Various lever lengths are available for specific pressure conditions as shown in the Table below. All lengths are in accordance with EN12570 Wrench Head Handle Fig.
  • Page 10 APPLICATION HAZARDS: 1. AVK eccentric plug valves should not be installed in lines where service pressure will exceed the rated working pressure of the valve. 2. The valve should not be used in applications that are exposed to freezing temperatures unless sufficient flow is maintained through the valve or other protection is provided to prevent freezing.

  • Page 11: Operation And Maintenance

    1. Do not operate the valves in a system that exceed the valves rated working pressure of 250 PSI. 2. AVK Eccentric Plug Valves are "Open Left" or counter-clockwise to open, quarter turn or 90 degrees to open or close.

  • Page 12: Repair Procedures

    REPAIR PROCEDURES Leakage, broken parts, hard operation, and other major defects should be corrected by a repair crew as soon as possible after the defect has been reported. If repairs are to be performed in the field, the repair crews should take a full complement of spare parts to the jobsite.
  • Page 13 REPLACE BONNET GASKET: (FIGURE 6) 1. Isolate valve and ensure there is no pressure in pipeline 2. Remove hot melt (1) to expose bonnet bolts (2) 3. Remove actuator 4. Disassembly ISO flange (3) , gland (8) & gland nuts (4) and packing (9) 5.

  • Page 14: Troubleshooting Guide

    Hydrant or supply vale is not fully open. Corrective action: Verify that the hydrant is fully open. The AVK Series 24 hydrant valve discs are fully opened in approximately 9-14 turns. Also locate and verify that the supply valve is fully open.

  • Page 15: Parts And Service

    PARTS AND SERVICE For information on parts and service for your area contact American AVK. Make a note of the hydrant model number and size located on the hydrant and contact: American AVK Company 2155 N. Meridian Blvd. Minden, NV 89423...