Emerson A81- User Manual

Emerson A81

Emerson A81– User Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.

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Table of Contents:

  • Page 2 – Instruction Manual; Table 1. Fisher A81 Valve Specifications; Description
  • Page 3 – Table 3. Material Temperature Capabilities; Table 4. Maximum Allowable Inlet Pressure for CW2M and M35‐2 Valves
  • Page 4 – Installation; WARNING; inspection and maintenance of the valve body.; CAUTION
  • Page 5 – Select and install two pipeline gaskets.; Note
  • Page 6 – Table 5. Stud Bolt Data
  • Page 7 – Figure 3. Optional Shaft‐to‐Valve Body Bonding Strap Assembly
  • Page 8 – Figure 4. Packing Arrangement Details; Maintenance
  • Page 9 – actuator cannot suddenly open or close the valve.; packing box pipe plug.; Packing Maintenance; Stopping Leakage; For valves with PTFE or graphite packing:
  • Page 10 – For valves with the ENVIRO‐SEAL packing system:; Replacing the Packing
  • Page 11 – Use the appropriate procedures below for installing packing.
  • Page 12 – Figure 5. Orientation of Bearing Tabs; Install the new packing system components as described in the; Replacing the Seal Ring Assembly
  • Page 13 – lines from the power actuator.; Unscrew the flange bolts, and remove the valve from the pipeline.
  • Page 14 – Table 7. Recommended Blind Flange Bolt Torque; Disassembly; section on page 12 of this
  • Page 15 – Figure 6. Taper / Expansion Pin Installation
  • Page 16 – Figure 7. Sectional of Typical Valve Body; Figure 8. Follower Spring/Spring Seat Assembly
  • Page 17 – Table 8. Recommended Actuator‐Mounting Bolt Torque; For the metal seal ring assembly,
  • Page 18 – Actuator Mounting; Parts Ordering
  • Page 19 – Parts Kits; Retrofit Kits for ENVIRO‐SEAL Packing; ENVIRO‐SEAL Packing System Retrofit Kits; Repair Kits for ENVIRO‐SEAL Packing; ENVIRO‐SEAL Packing System Repair Kits
  • Page 20 – Parts List
  • Page 21 – Figure 9. Fisher A81 Valve Assembly; SOFT
  • Page 22 – Figure 10. Fisher A81 Seal Assembly Detail
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Fisher

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POSI‐SEAL™ A81 Rotary Valve

Contents

Introduction

1

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Scope of Manual

1

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Specifications 2

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Description 2

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installation

4

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maintenance

8

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Packing Maintenance

9

. . . . . . . . . . . . . . . . . . . . . . . .

Replacing the Seal Ring Assembly

12

. . . . . . . . . . . . . .

Replacing the Disk, Shafts, or Bearings

13

. . . . . . . . . .

Actuator Mounting

18

. . . . . . . . . . . . . . . . . . . . . . . . .

Parts Ordering

18

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts Kits

19

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts List

20

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Figure 1. Fisher A81 Valve with FieldQ™ Actuator

W9479

Introduction

Scope of Manual

This instruction manual includes installation, maintenance, and parts information for the Fisher POSI‐SEAL A81 valve,
DN50 through DN300 or NPS 2 through NPS 12 (figure 1). Refer to separate instruction manuals for information
covering the power on‐off actuator and accessories.

Do not install, operate, or maintain an A81 valve without being fully trained and qualified in valve, actuator, and
accessory installation, operation, and maintenance. To avoid personal injury or property damage, it is important to
carefully read, understand, and follow all the contents of this manual, including all safety cautions and warnings. If you
have any questions about these instructions, contact your Emerson Process Management sales office before
proceeding.

Instruction Manual

D103302X012

A81 Valve

May 2011

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Summary

Page 2 - Instruction Manual; Table 1. Fisher A81 Valve Specifications; Description

Instruction Manual D103302X012 A81 Valve May 2011 2 Table 1. Fisher A81 Valve Specifications Specifications EN ASME Valve Body Size DN 50, 80, 100, 150, 200, 250, and 300 NPS 2, 3, 4, 6, 8, 10, and 12 Pressure Rating PN 10 to 40 per EN 12516‐1 CL150 and 300 per ASME B16.34 Valve Body Materials EN 1....

Page 3 - Table 3. Material Temperature Capabilities; Table 4. Maximum Allowable Inlet Pressure for CW2M and M35‐2 Valves

Instruction Manual D103302X012 A81 Valve May 2011 3 The A81 rotary valve features an eccentrically‐mounted disk with either soft or metal seal, providing capability forenhanced shutoff. The interchangeable sealing technology allows for the same valve body to accept both soft andmetal seals. Table 3....

Page 4 - Installation; WARNING; inspection and maintenance of the valve body.; CAUTION

Instruction Manual D103302X012 A81 Valve May 2011 4 Installation Key numbers in this procedure are shown in figure 9 unless otherwise indicated. WARNING Always wear protective gloves, clothing and eyewear when performing any installation operations to avoid personal injury. To avoid personal injury ...

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