Emerson Fisher EZ easy-e User manual

www.Fisher.com

Maintenance Packing System for Fisher™

Sliding-Stem Valves in Power Plant Applications

Contents

Introduction 1.................................

Scope of Manual 1.............................

Description 2.................................

Installation 3..................................

Tightening Procedures 4.......................

Other Considerations 5..........................

Parts Ordering 5................................

Figure 1. Fisher easy-e Valve Bonnet with

Maintenance Packing System

VALVE

BONNET

BELLEVILLE

SPRINGS

VALVE

STEM

PACKING

FLANGE

PACKING

FOLLOWER

W5814-1*

Introduction

Scope of Manual

This instruction manual includes installation and parts information for a Maintenance Packing System that uses

ENVIRO-SEAL™ live-loaded components (see figure 1). This system can be installed in Fisher Sliding-Stem valves with

12.7, 19.1, 25.4, 31.8 mm, and 50.8 mm (1/2, 3/4, 1, 1-1/4, and 2-inch) diameter stems as shown in table 2. Refer to

appropriate valve and actuator instruction manuals for necessary information relating to the disassembly and

assembly of the valve and actuator.

Do not install, operate, or maintain Maintenance Packing Systems 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 sales office before proceeding.

Instruction Manual

D104566X012

Maintenance Packing System for Sliding-Stem Valves

October 2020

Instruction Manual

D104566X012

Maintenance Packing System for Sliding-Stem Valves

October 2020

Table 1. Specifications

Applicable Product Types and Stem Diameters

See table 2

Pressure Limit (1)

Maximum Pressure: 310 bar (4500 psi)

Temperature Limits(2)

Minimum: -40°C (-40°F)

Maximum: 524°C (975°F)

1. The pressure/temperature limits in this manual, in the valve literature, and any applicable code or standard limitation, should not be exceeded.

2. The valves shown are only guidelines. These guidelines can be exceeded, but shortened packing life or increased leakage might result. The temperature ratings apply to the actual packing

temperature, not to the process temperature.

Description

This Maintenance Packing System is available only for field Installation in Fisher valves. It is intended for use in Steam

Service in conventional (non-nuclear) power plants that exceed the pressure and temperature limits of ENVIRO-SEAL

packing offerings.

This system is intended for use only in non-environmental applications and has not been tested for fugitive emission

service. The external live-loading provides elevated packing stress and compensates for packing wear and

consolidation. Periodic adjustment of the packing nuts may be required until the packing nut torque stabilizes.

Maintenance Packing System systems utilize Belleville (coned-disk) springs located on a PTFE lined follower. If the

piping and valve are insulated, do not allow insulation to extend above the yoke boss surface. Insure the packing

follower is exposed to ambient air conditions to provide adequate cooling. For applications that exceed the

temperature capability of the standard PTFE lined follower, a PEEK lined follower is available. Contact your Emerson

sales office for details.

Table 2. Fisher Sliding-Stem Product Availability for Maintenance Packing System

VALVE TYPE(1)

STEM DIAMETER, mm (INCHES)

12.7

(1/2)

19.1

(3/4)

25.4

(1)

31.8

(1-1/4)

50.8

(2)

A X X X X ---

CAV4 ---X X X X

DBQ X X X X ---

easy-e

(ED, ES, ET, EW, EZ) X X X X ---

EH X X X X X

ENA --- - -- - --X X

FB --- - --X X X

HP X X X X ---

YD X X X X ---

YS X X X X ---

1. Contact your Emerson sales office for valves not listed.

Instruction Manual

D104566X012

Maintenance Packing System for Sliding-Stem Valves

October 2020

Installation

If you are changing the packing system, it is good practice to review actuator sizing, as packing friction will change.

See tables 3 and 4 for information on packing friction.

WARNING

Avoid personal injury from sudden release of process pressure or uncontrolled movement of parts. Before performing any

maintenance operations:

D Do not remove the actuator from the valve while the valve is still pressurized.

D Always wear protective gloves, clothing, and eyewear when performing any maintenance operations to avoid personal

injury.

D Disconnect any operating lines providing air pressure, electric power, or a control signal to the actuator. Be sure the

actuator cannot suddenly open or close the valve.

D Use bypass valves or completely shut off the process to isolate the valve from process pressure. Relieve process pressure

from both sides of the valve. Drain the process media from both sides of the valve.

D Vent the power actuator loading pressure and relieve any actuator spring precompression.

D Use lock-out procedures to be sure that the above measures stay in effect while you work on the equipment.

D The valve packing box may contain process fluids that are pressurized, even when the valve has been removed from the

pipeline. Process fluids may spray out under pressure when removing the packing hardware or packing rings, or when

loosening the packing box pipe plug.

D Check with your process or safety engineer for any other hazards that may be present from exposure to process media.

If you are installing the system in a valve that is still connected to an actuator, remove the actuator from the valve to

provide sufficient space to install the packing assembly. If a spring-return actuator is used, it is possible that

disconnecting the stem connector will allow the spring to force the actuator to the end of its travel. Be sure the

actuator spring is resting on its travel stop. Refer to the appropriate valve and actuator instruction manuals to remove

the actuator.

Remove old packing parts from the packing box by using the valve instruction manual procedures. Both the valve stem

surface condition and the packing bore are critical in obtaining a good seal. If the valve stem surface is scratched,

nicked, or worn, replace the valve stem before installing the Maintenance Packing System. Check the condition of the

packing bore and clean or hone it out, as necessary. Refer to the appropriate valve instruction manual to replace the

valve stem.

Then proceed as follows:

1. The original packing flange studs used for standard packing arrangements should be long enough to accommodate

the retrofit kit parts. If you determine that the existing studs and nuts should be replaced however, due to their

condition, replace them with the studs and nuts (keys 200 and 212) specified in the parts section of this manual.

2. Carefully remove the old packing parts from the packing box. If the valve stem or packing box wall is scratched or

damaged, it can cause excessive leakage. If the valve stem needs to be replaced, or any other valve part, refer to the

appropriate valve instruction manual for replacement procedures. Complete all valve maintenance before installing

the Maintenance Packing System into the bonnet.

Table 3. Packing Friction at Ambient Temperature

VALVE STEM DIAMETER MAINTENANCE PACKING

mm Inches Newtons Pounds (Force)

12.7

19.1

25.4

31.8

1/2

3/4

1-1/4

1980

4580

7250

9470

445

1030

1630

2130

Instruction Manual

D104566X012

Maintenance Packing System for Sliding-Stem Valves

October 2020

Table 4. Packing Friction at Elevated Temperature 3155C (6005F)

VALVE STEM DIAMETER MAINTENANCE PACKING

mm Inches Newtons Pounds (Force)

12.7

19.1

25.4

31.8

1/2

3/4

1-1/4

760

1730

2740

3560

170

390

615

800

Note

Ensure the Belleville springs are stacked properly and packing box parts are assembled in the correct order (see figure 2). Packing

parts cannot function properly if the Belleville springs or other packing parts are not stacked correctly.

3. Use figure 2 to ensure that the packing parts and spring pack are assembled in the correct order. Install the packing

parts into the packing box.

4. Install the spring pack assembly (key 217), with the attached springs, onto the stem. Remove the O-Ring and

discard it.

5. Install the packing flange (key 201) with the chamfer away from the springs as shown in figure 2. Install the packing

box nuts (key 212). Hand tighten them.

Note

Lubrication (key 213) is required for the packing studs and nuts.

Although it is important to properly lubricate the stud threads and internal nut threads, it is also important to properly lubricate

the contacting face of the nut. See figure 2 for lubrication locations.

Tightening Procedures

1. The intended packing stress for this system is approximately 6000 psi which requires the Belleville springs to be

compressed 85% of their maximum deflection. The torque values in table 5 can be used as a guideline for 85%

spring compression. These values are based on generous lubrication of the packing studs and nuts with a nickel

anti-seize lubricant.

2. Refer to the appropriate valve and actuator instruction manuals when connecting the valve to the actuator. The

braided components in this packing system require significant consolidation before the nut torque will stabilize.

Stroke the valve and retorque until the consolidation process is complete and the specified packing nut torque is

maintained.

Table 5. Packing Nut Torque for 414 bar (6000 psi) Packing Stress

(1)

STEM SIZE TORQUE

mm Inch NSm lbfSin lbfSft

12.7 1/2 11.4 100 8.4

19.1 3/4 28.5 250 21

25.4 1 64 560 47

31.8 1-1/4 75 660 55

1. For A, DBQ, easy-e, EH, FB, HP, YD, and YS valves.

Instruction Manual

D104566X012

Maintenance Packing System for Sliding-Stem Valves

October 2020

Other Considerations

Check the condition of the packing bore after you have removed the packing. An easy method for cleaning debris and

minor imperfections from the bore is to use a brake cylinder hone attached to an electric drill. This method often does

a good job of cleaning the packing bore without changing the dimension of the bore. Inspect the packing bore for

damage. Damaged packing bores must be repaired or replaced.

Parts Ordering

Each valve assembly is assigned a serial number that can be found on the valve body. Refer to this serial number when

contacting your Emerson sales office for technical assistance. When ordering replacement parts, refer to this serial

number and to the part description and part number from the following parts list. When ordering replacement parts,

refer to the serial number and the 11-character part number for each part required from the following parts list.

WARNING

Use only genuine Fisher replacement parts. Components that are not supplied by Emerson Automation Solutions should

not, under any circumstances, be used in any Fisher valve, because they may void your warranty, might adversely affect the

performance of the valve, and could cause personal injury and property damage.

Instruction Manual

D104566X012

Maintenance Packing System for Sliding-Stem Valves

October 2020

Parts List

Key Description

200 Stud See following table

201 Packing Flange See following table

207* Guide Bushing See following table

209* Packing Ring See following table

210* Packing Ring See following table

211 Packing Box Ring See following table

Key Description

212 Packing Nut See following table

213* Anti-Seize Lubricant See following table

214* Packing Washer See following table

217 Spring Pack Assembly See following table

220* Packing Ring See following table

221* Packing Washer See following table

Table 6. Maintenance Packing Components for Fisher easy-e Valves (see figure 2)

KEY

NUMBER

PACKING

COMPONENT

VALVE STEM SIZE, mm (INCHES)

12.7

(1/2) QTY 19.1

(3/4) QTY 25.4

(1) QTY 31.8

(1-1/4) QTY 50.8

(2) QTY

200 Stud 1E944435222 2 1E944935222 2 0V002535222 2 1N356535222 2 1C7725X0032 3

201 Packing Flange 12B6924X012 1 12B6925X012 1 12B6654X012 1 12B6680X012 1 GE26167X012 1

207* Guide Bushing 12B5782X012 6 12B5784X012 5 12B5786X012 5 12B5788X012 5 12B5790X012 5

209* Packing Ring 12B5799X012 2 12B5800X012 2 12B5801X012 2 12B5802X012 2 12B5803X012 2

210* Packing Ring 14B7498X012 2 14B7520X012 2 14B7521X012 2 14B7522X012 2 17B3077X012 2

211 Packing Box Ring 12B5775X012 1 12B5776X012 1 12B5777X012 1 12B5778X012 1 12B5779X012 1

212 Packing Nut 1E944535252 2 1E944635252 2 1A343335252 2 1A368135252 2 1A440935252 3

213* Anti-Seize

Lubricant Not provided with packing

214* Packing Washer 12B6937X012 3 12B6938X012 3 12B6939X012 3 12B6940X012 3 19B4144X012 3

217 Spring Pack

Assembly GH08641X012 1 GH08641X022 1 GH08641X032 1 GH08641X042 1 GH08641X052 1

220* Packing Ring 1E3190X0652 3 1E3191X0542 3 1D7518X0292 3 1D7520X0282 3 1N2600X0072 3

221* Packing Washer GH08637X012 4 GE63540X022 4 GH08638X012 4 GH08639X012 4 GH08640X012 4

*Recommended spare parts

Instruction Manual

D104566X012

Maintenance Packing System for Sliding-Stem Valves

October 2020

Figure 2. Maintenance Packing for Fisher easy-e Valves

GH07970-B

APPLY LUB

Instruction Manual

D104566X012

Maintenance Packing System for Sliding-Stem Valves

October 2020

Emerson Automation Solutions

Marshalltown, Iowa 50158 USA

Sorocaba, 18087 Brazil

Cernay 68700 France

Dubai, United Arab Emirates

Singapore 128461 Singapore

www.Fisher.com

The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not

to be construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability. All sales are

governed by our terms and conditions, which are available upon request. We reserve the right to modify or improve the designs or specifications of such

products at any time without notice.

Fisher, ENVIRO-SEAL, and easy-e are marks owned by one of the companies in the Emerson Automation Solutions business unit of Emerson Electric Co.

Emerson Automation Solutions, Emerson, and the Emerson logo are trademarks and service marks of Emerson Electric Co. All other marks are the property

of their respective owners.

Neither Emerson, Emerson Automation Solutions, nor any of their affiliated entities assumes responsibility for the selection, use or maintenance

of any product. Responsibility for proper selection, use, and maintenance of any product remains solely with the purchaser and end user.

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