Instruction Manual

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Fisherr EWN Series and EW-1 Series Valves

Contents

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

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

Description 1.................................

Specifications 1...............................

Educational Services 3.........................

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

Maintenance 5.................................

Packing Lubrication 5..........................

Packing Maintenance 6.........................

Trim Removal 10..............................

Lapping Seating Surfaces 11....................

Valve Plug Maintenance 12.....................

Parts Ordering 14...............................

Parts List 14...................................

Figure1.FisherEWNT-2NPS12x8EWNT-2Valve

with Typical Actuator

W3310

Introduction

Scope of Manual

This instruction manual includes installation, maintenance, and parts information for Fisher NPS 8 x 6 and 12 x 8 EWN

Series and EW-1 Series valves (figure 1). Refer to separate manuals for instructions covering the actuator and

accessories.

Do not install, operate, or maintain an EWN or EW-1 Series valve without being fully trained and qualified in valve,

actuator, and accessory installation, operation, and maintenance. To avoid personal i njury 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.

Description

Thesesingle-portglobe-stylevalveshavecageguiding, threaded seat rings, metal-to-metal seating, and

push-down-to-close valve plug action. Additional details are given in tables 1 and 2.

Specifications

Typical specifications for these valves are shown in table 1. Some of the specifications for a given valve assembly as it

was shipped from the factory appear on the actuator nameplate if the valve is part of a complete control valve

assembly.

Instruction Manual

D100400X012

EWN and EW-1 Valves

July 2014

Summary of content (24 pages)

PAGE 1
Instruction Manual EWN and EW-1 Valves D100400X012 July 2014 Fisherr EWN Series and EW-1 Series Valves Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Scope of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Educational Services . . . . . . . . . . . . . . . . . . . . . . . . .
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Instruction Manual EWN and EW-1 Valves D100400X012 July 2014 Table 1. Specifications Available Configurations and Valve Body Sizes See table 2 End Connection Styles Whisper Trim™ Cages: Linear, except equal percentage for first 38.1 mm (1.5 inch) of travel with level D cage for NPS 8 x 6 valve Flow Directions Flanged Ends: Styles per ASME B16.
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Instruction Manual EWN and EW-1 Valves D100400X012 July 2014 Table 3.
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Instruction Manual EWN and EW-1 Valves D100400X012 July 2014 2. The control valve assembly may be installed in any orientation unless limited by seismic criteria. However, the normal method is with the actuator vertical above the valve. Other positions may result in uneven valve plug and cage wear and in improper operation. With some valves, the actuator may also need to be supported when it is not vertical. For more information, consult your Emerson Process Management sales office. Figure 2.
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Instruction Manual EWN and EW-1 Valves D100400X012 July 2014 WARNING Personal injury could result from packing leakage. Valve packing was tightened before shipment; however, the packing might require some readjustment to meet specific service conditions. Check with your process or safety engineer for any additional measures that must be taken to protect against process media. Maintenance Valve parts are subject to normal wear and must be inspected and replaced as necessary.
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EWN and EW-1 Valves July 2014 Instruction Manual D100400X012 WARNING To avoid personal injury or property damage resulting from fire or explosion, do not lubricate packing used in oxygen service or in processes with temperatures over 260_C (500_F). If a lubricator or lubricator/isolating valve (figure 2) is provided for PTFE/composition or other packings that require lubrication, it will be installed in place of the 1/4 NPT pipe plug (key 14, figure 6). Use a silicon-base lubricant.
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Instruction Manual EWN and EW-1 Valves D100400X012 July 2014 Figure 3.
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Instruction Manual EWN and EW-1 Valves D100400X012 July 2014 Figure 4. Detail of PTFE/Composition Packing Arrangements UPPER WIPER (KEY 12) PACKING FOLLOWER (KEY 13) PACKING RING (KEY 7) LANTERN RING (KEY 8) PACKING BOX RING (KEY 11) 12A8173-A A2619 12A8180-A A1498-2 TYPICAL (DOUBLE) ARRANGEMENT 12A8165-A 19.1 OR 25.4 mm (3/4 OR 1 IN.) STEMS 31.8 mm (1-1/4 IN.) STEMS LEAK-OFF ARRANGEMENT 2. Loosen the packing flange nuts (key 5, figure 6) so that the packing is not tight on the valve stem.
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Instruction Manual EWN and EW-1 Valves D100400X012 July 2014 Table 4. Valve Body-to-Bonnet Bolt Torque Guidelines(1) BOLT TORQUES(2) FOR FIELD-LUBRICATED BOLTING VALVE SIZE, NPS 8 x 6 CL900 12 x 8 NSm LbfSFt 542 400 CL300 or 600 691 510 CL900 with steel or alloy steel bolting 2440 1800 CL900 with stainless steel bolting 2712 2000 1. For other materials, contact your Emerson Process Management sales office for torques. 2. Determined from laboratory tests.
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Instruction Manual EWN and EW-1 Valves D100400X012 July 2014 13. Mount the actuator on the valve body assembly, and reconnect the actuator and valve stem according to the procedure in the appropriate actuator instruction manual. Check for leakage around the packing follower when the valve is being put into service. Retighten the packing flange nuts as required. Trim Removal WARNING Observe the warning at the start of the Maintenance section.
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Instruction Manual EWN and EW-1 Valves D100400X012 July 2014 7. Inspect parts for wear or damage that would prevent proper operation of the valve. Replace or repair trim parts according to the following Lapping Seating Surfaces or Valve Plug Maintenance procedures as appropriate. Lapping Seating Surfaces Seating surfaces of the valve plug and seat ring (keys 2 and 9, figure 7 through 10) can be lapped for improved shutoff. (Deep nicks should be machined out rather than ground out.
PAGE 12
Instruction Manual EWN and EW-1 Valves D100400X012 July 2014 Table 6. Removal Tool Required for Seat Ring Threaded to Valve Body (For 136, 197, or 203 mm (5-3/8, 7-3/4, or 8-inch) Seat Rings) VALVE SIZE AND DESIGN A C Min D E H J Size, Inch Schedule mm Inch mm Inch mm Inch mm Inch mm Inch mm Inch 5 120 610 24.00 12.7 0.50 63.5 2.50 25.4 1.00 210 8.25 133 5.25 EW-1 Series 8 XXS 678 26.69 69.9 2.75 76.2 3.00 EWN-1 Series 8 XXS 825 32.50 69.9 2.75 88.9 3.
PAGE 13
Instruction Manual EWN and EW-1 Valves D100400X012 July 2014 CAUTION Never reuse an old stem with a new valve plug. Using an old stem with a new plug requires drilling a new pin hole in the stem. This weakens the stem and may cause it to fail in service. However, a used valve plug may be reused with a new stem. 2. To replace the valve stem (key 7) on all designs, drive out the pin (key 8) and unscrew the stem from the valve plug. 3.
PAGE 14
Instruction Manual EWN and EW-1 Valves D100400X012 July 2014 Parts Ordering Each valve body-bonnet assembly is assigned a serial number, which can be found on the valve body. This same number also appears on the actuator nameplate when the valve is shipped from the factory as part of a control valve assembly. Refer to the serial number when contacting your Emerson Process Management sales office for technical assistance.
PAGE 15
Instruction Manual EWN and EW-1 Valves D100400X012 July 2014 Figure 6. Typical Bonnet Assemblies 30A9425-A C0363 CL300 OR CL600 DOUBLE-TAPPED EXTENSION BONNET FOR 25.4 mm (1 IN.) STEM CU3911-C CL300 OR CL600 DOUBLE-TAPPED EXTENSION BONNET FOR 19.1 mm (3/4 IN.) STEM 35A3976-A DETAIL OF CL900 BONNET FOR 31.8 mm (1-1/4 IN.
PAGE 16
Instruction Manual EWN and EW-1 Valves D100400X012 July 2014 Figure 7. Typical NPS 8 x 6 CL900 EWN Series Valve Body Assemblies EWND-1 PLUG DETAIL 45A4115-A APPLY LUB 45A4111-A EWNT-1 VALVE WITH LEVEL D1 OR D3 CAGE Valve Body Assembly (figure 7-10) Key 1 2* 3 5* 16 Description Part Number Valve Body If you need a valve body as a replacement part, order by valve size, serial number, and desired material.
PAGE 17
Instruction Manual EWN and EW-1 Valves D100400X012 Key 5* 6* 7* Description July 2014 Part Number NPS 12 x 8 EWD-1 or EWND-1 (1 req'd) Steam or nonoxidizing service to 316_C (600_F) Std or Level A, B, or C Whisper Trim III cage 10A3262X012 Level D Whisper Trim III cage 15A9019X012 Steam or nonoxidizing service to 482_C (900_F) or air or oxidizing service to 427_C (800_F) Std or Level A, B, or C Whisper Trim III cage 10A3262X022 Level D Whisper Trim III cage 15A9019X022 Steam or nonoxidizing servic
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Instruction Manual EWN and EW-1 Valves D100400X012 July 2014 Figure 8.
PAGE 19
Instruction Manual EWN and EW-1 Valves D100400X012 July 2014 Figure 9.
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Instruction Manual EWN and EW-1 Valves D100400X012 July 2014 Figure 10.
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Instruction Manual EWN and EW-1 Valves D100400X012 July 2014 Keys 6*, 7*, 8, 10, 11, 12*, 13, 30*, 31*, and 32* Packing Box Parts DESCRIPTION Single packing set, PTFE Packing ring, PTFE 25.4 (1) 31.
PAGE 22
Instruction Manual EWN and EW-1 Valves D100400X012 July 2014 Key 2* EWND-1 Valve Plug STEM DIA VALVE SIZE, NPS. 8x6 12 x 8 CL300 or 600 12 x 8 CL900 mm Inches 19.1 25.4 31.8 3/4 1 1-1/4 19.1 3/4 25.4 1 31.8 1-1/4 31.
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Instruction Manual D100400X012 EWN and EW-1 Valves July 2014 23
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EWN and EW-1 Valves July 2014 Instruction Manual D100400X012 Neither Emerson, Emerson Process Management, 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. Fisher and Whisper Trim are marks owned by one of the companies in the Emerson Process Management business unit of Emerson Electric Co.