Fisher™ easy-e™ Control Valve NPS 12 through 24x20

Management of Change GuideMay 2016

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Table of ContentsManagement of Change ..................................2

Background ....................................................2

Question & Answer Checklist ..........................2

Comparison of EU/EW to easy-e Valves ...........6Nomenclature .................................................................... 6

Materials of Construction and Features .............................. 6

Conclusion ......................................................9

Additional Resources .....................................10

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Management of ChangeManagement of Change (MOC) is a procedure used to proactively manage changes that have the potential to impact safety or the process within a plant. Evaluating new techniques for improving MOC approval procedures can have an impact on plant efficiency. Historically, upgrading obsolete products or replacing existing process control equipment had been delayed or abandoned due to the extensive paperwork involved in completing a complex MOC approval sheet.

BackgroundFisher™ easy-e™ brand control valves are found in almost every industry and have 40-plus years of service history. Fisher easy-e ED/EWD and ET/EWT valves are available in sizes ranging from NPS 1 through 12x8, while larger sizes of NPS 12 through 24x20 are available in the EU/EW family of valves. Emerson Process Management has moved these larger size valves under the easy-e brand and has adjusted the offering to better suit customers’ needs. The larger sizes will now be known as “easy-e valves.” The purpose of this guide is to simplify the transition from existing EU/EW valves to new easy-e valves.

Contained in this guide are two sections, the first contains questions and answers and the second compares easy-e valves to EU/EW valves. The first section helps users complete management of change (MOC) approval documents when upgrading to easy-e valves. The second section helps users better understand the differences and similarities between the EU/EW valves and easy-e valves. This section also demonstrates how it is much easier to work with easy-e valves and how they have been optimized to fit more applications.

Question & Answer Checklist1 Q: Does the proposed modification cause any changes to the piping and

instrumentation diagram (P&ID)?

A: Yes. The NPS 20x16 short neck easy-e valve is 58.7 mm (2.31 inches) taller in height when compared to currently installed NPS 20x16 short neck EU/EW valves. The term ‘short neck’ refers to the height of the neck of the valve and is dictated by valve travel. For the NPS 20x16 valve, short neck includes valve travels up to and including 203 mm (8 inches).

2 Q: Does the proposed modification change process chemistry, technology, or operating and control philosophies?

A: No.

3 Q: Does the proposed modification change how the existing plant is operated?

A: No.

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4 Q: Does the proposed modification change process flows?

A: No.

5 Q: Does the proposed modification change existing pressure relief cases?

A: Yes. Flow capacities have been increased and lowered for some valve constructions which may impact pressure relief systems depending on plant/process design. Flow capacities for easy-e valves are published by Emerson Process Management in Fisher Catalog 12 Section 1, which is available from your local Emerson Process Management sales office.

6 Q: Does the proposed modification change the process description?

A: No.

7 Q: Have the codes and standards to which the new equipment was designed changed?

A: No.

8 Q: Does the proposed modification change the materials of construction, such as a change in material form (cast, forged, or alloy)?

A: Yes. Valve trim (plug, seat ring, cage, and other process wetted parts) materials have been changed and assigned new trim designations. Trim materials for easy-e valves are published by Emerson Process Management in the Fisher Large ED/EWD and ET/EWT Valves Product Bulletin (D103554X012).

In addition, the availability of valve-to-bonnet bolting materials for CF8M valve body material constructions has been changed. Both SA-193-B7 stud and SA-194-2H nut body-to-bonnet bolting and SA-193-B8M stud and SA-194-8M nut valve-to-bonnet bolting were previously available for all EU/EW valve constructions having CF8M valve body material. For easy-e valves having CF8M valve body material SA-193-B7 stud and SA-194-2H nut bolting is not available. For easy-e valves having CF8M valve body material SA-193-B8M stud and SA-194-8M nut bolting is not available in CL600 NPS 16, 20x16 and 24x16 valves, and all NPS 20 and 24x20 valves. Fisher easy-e valves offer an additional bolting material to fill this gap, which is SA-453 Gr 660A studs and nuts.

9 Q: Does the proposed modification introduce new equipment items that require periodic predictive maintenance?

A: No. The new equipment items will require the same periodic maintenance as required by the previous equipment items.

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10 Q: Does the proposed modification change existing operator training requirements?

A: No.

11 Q: Does the proposed modification introduce new equipment items that require spare parts, training manuals, maintenance procedures or training to teach the maintenance department how to maintain them?

A: No. Maintenance procedures will be the same as those for EU/EW valves and no additional training or training materials will be necessary. Documentation for training/maintenance can be obtained by contacting your Emerson Process Management local business partner or sales office.

12 Q: Does the proposed modification introduce new equipment items that require spares or obsolete spares for existing equipment?

A: New spares will be introduced for easy-e valves. These new spares, may or may not be compatible with existing EU/EW valves. Please contact your Emerson Process Management sales office for further investigation into compatibility of spares across equipment. Spares for existing EU/EW valves will be available for a period of 10 years from the date of manufacture of the original valve. After this period, spares will no longer be available.

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13 Q: Does the proposed modification permanently remove the spares for existing pieces of equipment?

A: Yes. Valve trim (plug, seat ring, cage, and other process wetted parts) materials have been changed and assigned new trim designations. These material changes have resulted in changes in operating temperature limits in some constructions. Trim materials and temperature limits for easy-e valves are published by Emerson Process Management in the Fisher Large ED/EWD and ET/EWT Valves Product Bulletin (D103554X012). Flanged end connection valve body maximum temperature limits have been reduced for WCC, WC9, and CF8M materials as described in the table below.

Body Material

End Connection

Maximum Design Temperature

EU/EW Valve easy-e Valve

°C °F °C °F

WCCRaised Face (RF)

orRing Type Joint (RTJ)

427 800 354 700

WC9 593 1100 482 900

CF8M 593 1100 538 1000

When comparing easy-e to EU/EW valves the SA-193-B8M Class 2 stud and SA-194-8M nut valve-to-bonnet bolting temperature limit for CL150 and CL300 NPS 16, 20x16, and 24x16 valves has been reduced to a maximum design temperature of 121°C (250°F). EU/EW valves previously utilized this bolting material up to a maximum design temperature of 427°C (800°F) in CF8M material valves. Fisher easy-e valves offer an additional bolting material to fill this gap, which is SA-453 Gr 660A studs and nuts.

Flow capacities have been increased and lowered for some valve constructions. Flow capacities for easy-e valves are published by Emerson Process Management in Fisher Catalog 12 Section 1, which is available from your local Emerson Process Management sales office.

14 Q: Does the proposed modification change the inspection scope or inspection interval?

A: No.

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Comparison of EU/EW to easy-e Valves Fisher easy-e valves are essentially the same as EU/EW valves, but with a few enhancements and additions. Travels and features were consolidated so that inventories could be effectively created and managed for these valves and their spare parts. This will help to lower lead times in ordering replacements. In addition, the maximum temperature limit was increased in the ET/EWT easy-e valve (previously EUT-2/EWT-2) from 232°C (450°F) to 316°C (600°F) to cover a broader range of temperatures. The following subsections will compare the two types of product lines in the three major areas of nomenclature, materials of construction, and features..

NomenclatureThe goal of introducing easy-e valves is to reduce complexity and make ordering easier, when compared to EU/EW valves. The official name of EU/EW valves is now the “easy-e”. A summary of nomenclature changes is listed below.

Previous Name (EU/EW) New Name (easy-e)

EUD ED

EWD EWD

EUT ET

EUT-2 ET

EUT-C ET-C

EWT EWT

EWT-2 EWT

EWT-C EWT-C

Table 1. New Naming Conventions

Materials of Construction and Features Materials of construction for easy-e valves are published by Emerson Process Management in the Fisher Large ED/EWD and ET/EWT Valves Product Bulletin (D103554X012). Some materials have been added and some removed to better suit customers’ needs when compared to EU/EW valves. The following table provides a comparison of materials for each part between the EU/EW and easy-e valves.

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PartMaterial

EU/EW Valve easy-e Valve

Valve Body and Bonnet

WCCWC9CF8M

LCC

WCCWC9CF8M

LCCC12A

CD3MNCD3MWCuN

Valve PlugCA6NM HT

WC9 with Co-Cr-ACF8M with CoCr-A

CA6NM HTWC9 with CoCr-ACF8M with CoCr-A

F91 with CoCr-A2205 Duplex with R31233

2507 Super-Duplex with R31233

Seat Ring CB7CU-1 H1075CF8M with CoCr-A

17-4 SST H1075316 SST with CoCr-A

316 SST2.25 Cr - 1 Mo with CoCr-A9 Cr - 1 Mo - V with CoCr-A2205 Duplex with CoCr-A

2507 Super-Duplex with CoCr-A

Seat Ring Cap Screws

S17400N07718

N07718

Cage

CB7CU-1 H1075WC9 Nitrided

CF8M ENCCF8M Chrome CoatedS41000 ENC/R31233

316L ENC/R31233

17-4 SST H10752.25 Cr - 1 Mo Nitrided

316 SST Chrome-CoatedS41000 ENC/R31233

S31603 ENC/R31233316 SST Chrome-Plated9 Cr - 1 Mo - V Nitrided

17-4 SST DBL H11502205 Duplex Chrome-Plated

2507 Super-Duplex Chrome-Plated

Piston Ring Graphite (Fisher Designation FMS17F27)Graphite (Fisher Designation FMS17F39)

Graphite (Fisher Designation FMS17F39)

Bore Seal N07718 N07718

Seal RingGlass and Moly-Filled PTFE with N10276

springPTFE/graphite with N10276 spring

Glass and Moly-Filled PTFE with N10276 springPTFE/graphite with R30003 spring

Backup Ring S41000S31600

S41000S31600

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PartMaterial

EU/EW Valve easy-e Valve

Retaining Ring 18-8 Stainless Steel18-8 Stainless Steel

N07750

Anti-extrusion Ring PEEK (poly ether ether ketone) PEEK (poly ether ether ketone)

Valve Stem S20910 S20910

Gaskets N06600/Graphite N06600/Graphite

Valve-to-Bonnet Bolting

WCC Valve

SA-193-B7 Studs, SA-194-2H NutsSA-193-B7 Studs, SA-194-2H Nuts

SA-193-B7M Studs, SA-194-2HM Nuts

LCC Valve

SA-193-B7 Studs, SA-194-2H NutsSA-193-B7 Studs, SA-194-2H Nuts

SA-193-B7M Studs, SA-194-2HM Nuts

WC9 Valve

SA-193-B7 Studs, SA-194-2H Nuts

SA-193-B7 Studs, SA-194-2H NutsSA-193-B16 Studs, SA-194-7 Nuts

N07718 HT Studs, N07718 HT Chrome Coat Nuts

CF8M Valve

SA-193-B7 Studs, SA-194-2H NutsSA-193-B8M Class 2 Studs, SA-194-8M

NutsSA-479 S20910 Chrome Coat Studs,

SA-479 S20910 Nuts

SA-193-B8M Class 2 Studs1, SA-194-8M Nuts1

SA-479 S20910 Chrome Coat Studs,SA-479 S20910 Nuts

SA-453 Gr 660A Studs, SA-453 Gr 660A Nuts

Packing FlangeSteel

S31600S31600

Packing Flange Bolting

SA-193-B7 Studs, SA-194-2H NutsSA-193-B8M Studs, SA-194-8M Nuts

SA-193-B8M Studs, SA-194-8M Nuts

Packing Follower, Spring, and Lantern

RingS31600 S31600

Packing Box RingS17400S31600

S31600

The previous higher temperature limit that came standard with the EUT/EWT is now an option in the easy-e ET/EWT valve. In more detail, the EUT/EWT construction used a seat ring that is bolted into the valve body to extend the service temperature limit above 232°C (450°F). The new easy-e construction is able to utilize the same threaded-to-cage seat ring as the ET/EWT with a new High Temperature Seal (HTS1) option featuring PEEK anti-extrusion rings to extend the service temperature limit above 232°C (450°F).

1. Available for CL150-600 NPS 12 and 16x12 valves and CL150-300 NPS 16, 20x16, and 24x16 valves. Not available for CL600 NPS 16, 20x16, and 24x16 valves, and all NPS 20 and 24x20 valves.

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The following table provides a list of major features that were available with EU/EW valves, but not available with easy-e valves. Also included in this table is a suggested alternative to each feature.

EU/EW Feature Affected Size(s), NPS Alternative easy-e Feature

Whisper Trim™ III level D1 trim All Whisper Trim III level D3 trim

5’’ travel standard cages used for linear and equal percentage trims

All 4’’ or 5-1/2’’ travel

Drilled-window cages used for linear and equal percentage trims

All Cast-window cages

8 7/8’’ travel 16x12 8’’ travel

14’’ port diameter16

20x1624x16

14.75’’ port diameter

17’’ port diameter20

24x2018.25’’ port diameter

10 7/8’’ and 14 7/8’’ travel standard cages used for linear and equal

percentage trims20 8’’ travel

14 7/8’’ and 16 7/8’’ travel standard cages used for linear and equal

percentage trims24x20 8’’ travel

12 7/8 and 13 7/8’’ travelWhisper Trim III cages

20 14 7/8’’ travel

8’’ travel WhisperFlo™ cages20

24x2010 7/8’’ travel

16 7/8’’ travel Cavitrol™ III cages 24x20 14-7/8’’ travel

ConclusionThe elimination of EU/EW valves and the introduction of easy-e valves will not affect EU/EW valves currently installed in plants, with the exception of ordering spare parts. Spares for existing EU/EW valves will be available for a period of 10 years from the date of manufacture; however, some spares for easy-e valves will be compatible with EU/EW valves, while some will not. Fisher easy-e valves are available in several new sizes, features, and materials, in addition to the previous EU/EW valve offerings to cover a wide range of customer application needs. In summary, easy-e valves are easier to order and cover a wider range of applications.

© 2016 Fisher Controls International LLC. All rights reserved.

Fisher and FIELDVUE are marks owned by one of the companies in the Emerson Process Management business unit of Emerson Electric Co. Emerson Process Management, Emerson, and the Emerson logo are trademarks and service marks of Emerson Electric Co. All other marks are the property of their respective owners.

The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, nothing herein is to be construed as a warranty or guarantee, express or implied, regarding the products or services described herein or their use, performance, merchantability or fitness for a particular purpose. Individual results may vary. 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 our products at any time without notice. Responsibility for proper selection, use and maintenance of any product or service remains solely with the purchaser and end user.

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MOC: easy-e Valve NPS 12 through 24x20May 2016

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Additional Resources

Product Bulletin (D103554X012)

http://www.documentation.emersonprocess.com/groups/public/documents/bulletins/d103554x012.pdf

Instruction Manual (D103553X012)

http://www.documentation.emersonprocess.com/groups/public/documents/instruction_manuals/d103553x012.pdf

easy-e Sliding-Stem Control Valves Brochure (D350365X012)

http://www.documentation.emersonprocess.com/groups/public/documents/brochures/d350365x012.pdf