Emerson A31A- User Manual
Emerson A31A– 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.
Table of Contents:
- Page 2 – Instruction Manual; End Connection Styles
- Page 4 – Installation; WARNING; Always wear protective gloves,
- Page 5 – Use pressure-relieving devices as; CAUTION
- Page 8 – See figure 5 for recommended valve orientation.
- Page 9 – Packing Adjustment and Shaft Bonding; For PTFE or graphite packing:; Warning; Note
- Page 10 – Maintenance; even when the valve has; Removing and Replacing the Actuator
- Page 11 – The packing is now accessible.
- Page 13 – PTFE Seals
- Page 15 – actuator travel stop or by the actuator; Remove the
- Page 16 – Remove the packing from around the upper shaft.; Installing the Two-Piece Shaft
- Page 18 – Gasket Retainer; Refer to table 6 for proper torque values.; Parts Ordering; Typical parts are shown in figure 9.; Retrofit Kits; See table 8 for retrofit kit part numbers.
- Page 19 – Repair Kits; Parts List
- Page 20 – Packing System
www.Fisher.com
D500194X012
Type A31A High Performance Butterfly Valve
(NPS 14 through 24)
Contents
Introduction
1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Scope of Manual
1
. . . . . . . . . . . . . . . . . . . . . . . . . .
Description
1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications Table
2
. . . . . . . . . . . . . . . . . . . . . . .
Installation
4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Valve Orientation
5
. . . . . . . . . . . . . . . . . . . . . . . . .
Before Installing the Valve
5
. . . . . . . . . . . . . . . . . .
Adjusting the Actuator Travel Stops or Travel
8
.
Installing the Valve
8
. . . . . . . . . . . . . . . . . . . . . . . .
Packing Adjustment and Shaft Bonding
9
. . . . . .
Maintenance
10
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing and Replacing the Actuator
10
. . . . . .
Packing Maintenance
10
. . . . . . . . . . . . . . . . . . . . .
Removing the Valve
11
. . . . . . . . . . . . . . . . . . . . . .
Seal Maintenance
11
. . . . . . . . . . . . . . . . . . . . . . . .
PTFE Seals
11
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
NOVEX, Phoenix III and/or
Phoenix III Fire-Tested Seals
14
. . . . . . . . . .
Anti-Blowout Design, Packing, Valve Shaft,
Disc, and Bearing Maintenance
15
. . . . . . . . . .
Installing the Two-Piece Shaft
16
. . . . . . . . . . . .
Gasket Retainer
18
. . . . . . . . . . . . . . . . . . . . . . . . .
Parts Ordering
18
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts List
19
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction
Scope of Manual
This instruction manual includes installation,
maintenance, and parts ordering information for NPS
14 through 24, Type A31A High-Performance
Butterfly Valves (see figure 1). Refer to separate
instruction manuals for information covering the
actuator and accessories.
Do not install, operate, or maintain a Type A31A
High-Performance Butterfly Valve without first
D
being fully trained and qualified in valve, actuator,
and accessory installation, operation, and
maintenance, and
D
carefully reading and
understanding the contents of this manual. If you
have any questions about these instructions, contact
Figure 1. Type A31A Valve with Bettis
r
Actuator and
DVC6020 Digital Valve Controller
W9134-1
your Emerson Process Management
t
sales office
before proceeding.
Description
The valve is available in either a flangeless wafer
body or a single-flange (lugged) body design, with a
variety of seals and internal components. The
pressure-assisted seal provides tight shutoff against
the full class pressure range for the specific type.
The keyed shaft combines with a variety of
handlevers, handwheels, pneumatic piston or
spring-and-diaphragm actuators. Maximum inlet
pressure/temperature ratings are consistent with
CL150 and 300.
Note
Neither Emerson, Emerson Process
Management, nor any of their affiliated
entities assumes responsibility for the
selection, use and maintenance of any
product. Responsibility for the
selection, use, and maintenance of any
product remains with the purchaser
and end-user.
Instruction Manual
Form 5291
March 2008
A31A Valve
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Summary
A31A Valve Instruction Manual Form 5291 March 2008 2 Table 1. Specifications Valve Size and End Connection Styles NPS J 14, J 16, J 18, J 20, and J 24 valves, and in J wafer-style (flangeless) or J single-flange (lugged) with raised-face flanges, CL150 or 300 Maximum Pressure Drop (1) Consistent wit...
A31A Valve Instruction Manual Form 5291 March 2008 4 Table 2. Material Temperature Ratings COMPONENT AND MATERIAL OF CONSTRUCTION (1) TEMPERATURE RANGE _ C _ F Valve Body Carbon Steel (WCC or SA 516-70) (5) CF8M (316 SST) CL150CF8M FMS 20B16 (0.04% min. carbon) CL300 29 to 427198 to 538198 to 816 20...
A31A Valve Instruction Manual Form 5291March 2008 5 the limits given in this manual or onthe nameplates. D Use pressure-relieving devices as required by government or acceptedindustry codes and good engineeringpractices to protect fromover-pressurizing the system. D Check with your process or safety...
