Flowserve Edward 3902Y Manuals

Manuals and User Guides for Flowserve Edward 3902Y. We have 1 Flowserve Edward 3902Y manual available for free PDF download: Maintenance Manual

Flowserve Edward 3902Y Maintenance Manual (51 pages)

Pressure-Seal Valves

Brand: Flowserve | Category: Control Unit | Size: 0 MB

Table of Contents
2
Key to Illustrations

3
Pressure-Seal Valve Figure Numbers

3
Introduction

3
- Type I
  4
- Type II
  5
- Type III
  6
- Type IV
  7
Valve Bonnet Types

4
Description of Pressure-Seal

4
Service Problems

8
- Packing Chamber Leak
  8
- Packing Recommendations
  8
- Pressure-Seal Gasket Leaks
  10
- Pressure-Seal Leak
  10
- Seat and Disk Joint Leaks
  10
- Body Wall Leaks
  12
- Objectionable Vibration, Noise or Excessive Pressure Drop
  12
- Valve Lubrication
  12
Repair Procedures

13
- Valve Body Repairs
  13
  - Body Bore Gasket Seal Area Repair
    13
  - Body Bore Guide Rib Repair
    13
  - Seat and Disk Repair
    14
  - Body Wall Repair
    15
- Valve Component Repair
  15
  - Disk-Piston Assembly Repair
    15
  - Bonnet or Cover Repair
    16
- Welding Rod Recommendations
  16
- Field Repair Equipment
  17
Disassembly Procedures for Pressure-Seal Valves

18
- Introduction
  18
- First Determine the Area of Failure
  18
Disassembly Procedures for Impactor Handles and Handwheels

20
Procedures for Removing Limitorque Operators from Valve Yokes

22
- Revolving Stem Valves or Non-Revolving Stem Valves with Torque-Only Units
  22
- Non-Revolving Stem Valves with Torque and Thrust Units
  23
Procedures for Setting Actuator Torque and Limit Switches

24
- Limitorque Limit Switch and Torque Switch Setting Procedures
  24
  - Geared Limit Switch
    24
  - Torque Switch
    25
  - Single Torque Switch
    25
  - Double Torque Switch
    25
  - Torque Switch Setting
    26
Disassembly Procedures for Yoke Assemblies

27
Procedures for Removing Operator and Yoke Assembly as a Unit

29
Disassembly Procedures for Bonnet Types

31
Assembly of Composite Pressure-Seal Gaskets

42
Reassembly Procedures for Metal Pressure-Seal Valves

43
- Introduction
  43
General Information

48
Supplementary Repair Information

50
Ordering Parts

50

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Flowserve Edward 3902Y Manuals

Flowserve Edward 3902Y Maintenance Manual (51 pages)

Table of Contents

Key to Illustrations

Pressure-Seal Valve Figure Numbers

Introduction

Valve Bonnet Types

Description of Pressure-Seal

Service Problems

Repair Procedures

Disassembly Procedures for Pressure-Seal Valves

Disassembly Procedures for Impactor Handles and Handwheels

Procedures for Removing Limitorque Operators from Valve Yokes

Procedures for Setting Actuator Torque and Limit Switches

Disassembly Procedures for Yoke Assemblies

Procedures for Removing Operator and Yoke Assembly as a Unit

Disassembly Procedures for Bonnet Types

Assembly of Composite Pressure-Seal Gaskets

Reassembly Procedures for Metal Pressure-Seal Valves

General Information

Supplementary Repair Information

Ordering Parts

Related Products

Flowserve Categories