Emerson Fisher EWD User manual

www.Fisher.com

Fisher™EWD, EWS, and EWT Valves

through NPS 12x8

Contents

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

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

Description 3.................................

Specifications 3...............................

Educational Services 4.........................

Installation 4

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

Inverted Globe Valve Applications

(Actuator below valve) 6.....................

Maintenance 7

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

Packing Lubrication 8..........................

Packing Maintenance 10........................

Replacing Packing 11.......................

Trim Maintenance 14..........................

Trim Removal 15..........................

Lapping Metal Seats 16.....................

Valve Plug Maintenance 17..................

Trim Replacement 19......................

Retrofit: Installing C‐seal Trim 20................

Replacement of Installed C‐seal Trim 24...........

Trim Removal (C‐seal Constructions) 24.......

Lapping Metal Seats (C‐seal Constructions) 25..

Remachining Metal Seats

(C‐seal Constructions) 25.................

Trim Replacement (C‐seal Constructions) 26...

ENVIRO‐SEALtBellows Seal Bonnet 27...........

Parts Ordering 32

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

Parts Kits 33.....................................

Parts List 36.....................................

Figure 1. Fisher NPS 12x6 EW Series Valve With

667 Actuator

W2777‐2*

Introduction

Scope of Manual

This instruction manual includes installation, maintenance, and parts information for Fisher NPS 4x2 through 12x8

EWD, EWS, and EWT valves (figure 1). Refer to separate manuals for instructions covering the actuator and

accessories.

Do not install, operate, or maintain an EW 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 sales office or Local Business Partner before

proceeding.

Instruction Manual

D100399X012

EW Valve

July 2017

Instruction Manual

D100399X012

EW Valve

July 2017

Table 1. Specifications

End Connection Styles

Flanged Ends: CL300, CL600, or CL900 Raised‐face or

ring‐type joint flanges per ASME B16.5

Buttwelding Ends: Styles per ASME B16.25 schedules

consistent with ASME B16.34 are: Schedules J40 or

J80 for all CL300 and CL600 valves, Schedule J80

or JXXS for NPS 8x6 CL900 valves, or Schedule

J80, J100, or J120 for NPS 12x8 CL900 valves.

Maximum Inlet Pressures, Temperatures, and

Pressure Drops(1)

Consistent with applicable JCL300, JCL600(2), or

JCL900(3) pressure/temperature ratings per ASME

B16.34, but do not exceed the pressure,

temperature, and pressure drop conditions specified

when the valve was ordered. Also see the Installation

section.

Also see Bulletin 80.3:010 WhisperFlotAerodynamic

Attenuation Trims, D102362X012

Shutoff Classifications

See table 2

C‐seal trim: High‐temperature, Class V per ANSI/FCI

70‐2 and IEC 60534‐4

See table 3

WhisperFlo Trim:

JClass IV per ANSI/FCI 70‐2 and IEC 60534‐4

JOthers per application

Flow Characteristics

Standard Cages: JLinear, Jquick opening, or

Jequal percentage

Whisper Trimtand CavitroltCages: Linear

WhisperFlo Trim: Linear (restricted linear cages and

special, characterized cages are available--consult

your Emerson sales office or Local Business Partner)

Flow Directions

EWS and Standard Cage: Normally up

EWD or EWT with Standard Cage: Normally down

Whisper Trim Cages: Always up

Cavitrol Cages: Always down

WhisperFlo Trim: Flow up (standard)—through the

seat ring and out through the cage orifices

Approximate Weights

See table 4

WhisperFlo Trim Material and Selection

J410 Stainless Steel

JOthers per application

See appropriate valve body bulletin

WhisperFlo Pressure/Temperature Capability

J-29 to 427_C (-20 to 800_F)

JOthers per application

See appropriate valve body bulletin for

complementary information

WhisperFlo Aerodynamic Trim Pressure Ratings(1,2)

Up to 1500 psi drop

WhisperFlo Velocity Limits

WhisperFlo trim is designed for 0.3 MACH as an

inherent outlet velocity limit. Variations higher and

lower may be applied per special applications

WhisperFlo Rangeability

100:1

WhisperFlo Noise Attenuation

Approximately -40 dBA maximum depending on the

nP/P1ratio per IEC 534‐8‐3 calculation procedure

See Fisher Specification Manager

Additional Specifications

For specifications such as materials, port diameters,

valve plug travels, yoke boss diameters, and stem

diameters, refer to the Parts List

1. The pressure or temperature limits in this manual and any applicable standard limitations should not be exceeded.

2. Certain bonnet bolting material selections may require a CL600 easy‐e valve assembly to be derated. Contact your Emerson sales office.

3. There are two different CL900 NPS 8x6 valve bodies, one for use only with Cavitrol III cages and the other for use with all other constructions. A CL900 valve with Cavitrol III cage can take full

CL900 pressure drops. For information on other NPS 8x6 constructions that can take full CL900 pressure drops, contact your Emerson sales office. All other trim constructions are limited to

CL600 pressure/temperature limits even though installed in a CL900 valve.

Instruction Manual

D100399X012

EW Valve

July 2017

Figure 2. Cutaway Detail of the Fisher WhisperFlo Trim, Valve Body Typical

W6825‐1

Description

These single‐port globe‐style valves have cage guiding, clamped seat rings, and push‐down‐to‐close valve plug action.

Valve configurations are as follows:

EWD: Balanced valve plug with metal‐to‐metal seating for all general applications over a wide range of pressure drops

and temperatures.

C‐seal trim is available for EWD valves, CL300 and CL600, in sizes NPS 6x4x2‐1/2, 6x4, 8x4, 8x6, 12x6, 10x8, and 12x8.

With C‐seal trim, a balanced valve can achieve high‐temperature, Class V shutoff. Because the C‐seal plug seal is

formed from metal (N07718 nickel alloy) rather than an elastomer, a valve equipped with the C‐seal trim can be

applied in processes with a fluid temperature of up to 593_C (1100_F), provided other material limits are not

exceeded.

EWS: Unbalanced valve plug with metal‐to‐metal or optional metal‐to‐PTFE seating for all general applications

requiring better shutoff capabilities than can be obtained with the EWD valve.

EWT: Balanced valve plug with either metal‐to‐PTFE seating (standard for all except Cavitrol III cages) for stringent

shutoff requirements or metal‐to‐metal seating (standard for Cavitrol III cages, optional for all others) for higher

temperatures.

Control valves with WhisperFlo cages (figure 2) provide additional attenuation for aerodynamic noise in very

demanding vapor or gas applications with high‐pressure drops. A WhisperFlo cage with an appropriately sized valve

body is designed to reduce the noise level up to -40 dBA. For special applications, -50 dBA attenuation can be

achieved.

Specifications

Typical specifications for these valves are shown in table 1.

Instruction Manual

D100399X012

EW Valve

July 2017

Table 2. Shutoff Classification Per ANSI/FCI 70‐2 and IEC 60534‐4

Valve Seating Shutoff Class

EWD Metal II (standard)

III (optional for NPS 6x4 through 12x6 valves with optional single graphite piston ring or for

NPS 10x8 and 12x8 valves with optional double piston rings)

IV (optional for NPS 6x4 through 12x8 valves with optional multiple graphite piston rings)

EWS Metal IV (standard)

V (optional, consult your Emerson sales office or Local Business Partner)

EWS PTFE VI

EWT with all except

Cavitrol III cages

PTFE Standard Air Test (maximum leakage is 0.05 mL/min/psid/inch port diameter)

V (optional)

Metal IV (standard)

Metal V (optional)(1)

EWT with

1‐stage Cavitrol III cage

Metal IV (standard)

V (optional)

EWT with 2‐stage Cavitrol III cage Metal V

1. Class V shutoff for EWT requires spring loaded seal ring, radius‐seat plug, wide‐bevel seat ring, and seat lapping. Not available with 8‐inch port, quick‐opening cage. Not available with

S31600 (316 SST) valve plug and seat ring.

Table 3. Additional Shutoff Classification for C‐seal Trim Per ANSI/FCI 70‐2 and IEC 60534‐4

Valve Valve Size, NPS Port Diameter, Inches Cage Style Leakage Class

EWD

(CL300, CL600)

6x4x2‐1/2 2.875 Equal Percentage, Linear, Whisper I,

Cavitrol III (2‐stage)

V (for port

diameters from 2.875

through 8‐inch with

optional C‐seal trim)

6x4

8x4 4.375 Equal Percentage, Linear, Whisper I,

Cavitrol III (1‐stage)

8x6 and 12x6 5.375 Whisper III (A3, B3, D3, D3), Cavitrol III (2‐stage)

8x6

12x6 7Equal Percentage, Linear, Whisper I,

Cavitrol III (1‐stage)

10x8

12x8 8Equal Percentage, Linear, Whisper I,

Cavitrol III (1‐stage)

Educational Services

For information on available courses for the Fisher EW valve, as well as a variety of other products, contact:

Emerson Automation Solutions

Educational Services - Registration

Phone: 1-641-754-3771 or 1-800-338-8158

E-mail: [email protected]

emerson.com/fishervalvetraining

Installation

WARNING

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

injury.

Personal injury or equipment damage caused by sudden release of pressure or bursting of parts may result if the valve

assembly is installed where service conditions could exceed the limits given in table 1 or on the appropriate nameplates. To

avoid such injury or damage, provide a relief valve for overpressure protection as required by government or accepted

industry codes and good engineering practices.

Instruction Manual

D100399X012

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July 2017

Check with your process or safety engineer for any additional measures that must be taken to protect against process

media.

If installing into an existing application, also refer to the WARNING at the beginning of the Maintenance section in this

instruction manual.

CAUTION

When ordered, the valve configuration and construction materials were selected to meet particular pressure, temperature,

pressure drop and controlled fluid conditions. Responsibility for the safety of process media and compatibility of valve

materials with process media rests solely with the purchaser and end‐user. Since some body/trim material combinations

are limited in their pressure drop and temperature ranges, do not apply any other conditions to the valve without first

contacting your Emerson sales office or Local Business Partner.

Before installing the valve, inspect the valve and pipelines for any damage and any foreign material which may cause

product damage.

Table 4. Approximate Weights

END CONNECTION

VALVE SIZE, NPS

4X2 6X4 8X4 8X6 10X8 12X6 12X8

Kg Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg Lb

CL300 (flanged only) 84 185 150 330 234 515 284 625 567 1250 500 1102 653 1440

CL600 Flanged 100 220 195 430 272 600 308 680 744 1640 721 1590 857 1890

Buttwelding 61 135 122 270 177 390 272 600 512 1130 526 1160 658 1450

CL900 Flanged ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ 612 1350 ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ 1361 3000

Buttwelding ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ 454 1000 ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ 1293 2850

CAUTION

If hoisting the valve, use a nylon sling to protect the surfaces. Carefully position the sling to prevent damage to the actuator

tubing and any accessories. Also, take care to prevent people from being injured in case the hoist or rigging slips

unexpectedly. Refer to table 4 for valve assembly weights. Be sure to use adequately sized hoists and chains or slings to

handle the valve.

1. Before installing the valve, inspect the valve body cavity and associated equipment for any damage and any foreign

material.

2. Make certain the valve body interior is clean, that pipelines are free of foreign material, and that the valve is

oriented so that pipeline flow is in the same direction as the arrow on the side of the valve.

3. Install the control valve assembly 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 sales office or Local Business Partner.

Note

If installing a valve with small internal flow passages, such as with WhisperFlo, Whisper Trim, or Cavitrol cages, consider installing

an upstream strainer to prevent the lodging of particles in these passages. This is especially important if the pipeline cannot be

thoroughly cleaned or if the flowing medium is not clean.

Instruction Manual

D100399X012

EW Valve

July 2017

4. Use accepted piping and welding practices when installing the valve in the line. For flanged valve bodies, use a

suitable gasket between the valve body and pipeline flanges.

CAUTION

Depending on valve body materials used, post weld heat treating may be required. If so, damage to internal elastomeric

and plastic parts, as well as internal metal parts is possible. Shrink‐fit pieces and threaded connections may also loosen. In

general, if post weld heat treating is to be performed, remove all trim parts. Contact your Emerson sales office or Local

Business Partner for additional information.

5. With a leak‐off bonnet construction, remove the pipe plugs (keys 14 and 16, figure 21) from the bonnet to hook up

the leak‐off piping. If continuous operation is required during inspection or maintenance, install a three‐valve

bypass around the control valve assembly.

6. If the actuator and valve are shipped separately, refer to the actuator mounting procedure in the appropriate

actuator instruction manual.

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.

Valves with ENVIRO‐SEAL live‐loaded packing or HIGH‐SEAL live‐loaded packing will not require this initial

re‐adjustment. See Fisher instruction manuals, ENVIRO‐SEAL Packing System for Sliding‐Stem Valves, D101642X012,

or HIGH‐SEAL Live‐Loaded Packing System, D101453X012, (as appropriate), for packing instructions. If you wish to

convert your present packing arrangement to ENVIRO‐SEAL packing, refer to the retrofit kits listed in the parts kit

sub‐section near the end of this manual.

Inverted Globe Valve Applications (Actuator below valve)

Due to space restrictions in your application, you may be required to mount the valve/actuator assembly in an inverted

orientation, with the actuator positioned below the valve. If so, the following procedures will help you with

disassembly and assembly techniques.

WARNING

Avoid personal injury or property damage caused by components dropping.

With the valve/actuator upside down, components may drop during disassembly or assembly. Be careful not to position

yourself below the valve in the path of falling parts.

As the bonnet/plug/cage is lowered from the valve body, the center of gravity will be above the lifting points. Take care to

prevent the assembly from tipping over as it is lowered. Either leave the actuator attached to the plug and bonnet, attach

straps to the stem, or provide other means to prevent tipping.

Disassembly

1. Provide adequate support to the actuator while removing it from the bonnet.

Instruction Manual

D100399X012

EW Valve

July 2017

2. Provide adequate support to the bonnet while removing the bonnet nuts.

3. Be aware that the bonnet/plug/cage may tip over as they are lowered from the valve body. Make provision to

prevent tipping.

4. Be aware that the cage and seat ring may not come out with the bonnet and plug/stem assembly. If this occurs,

make provision to support these parts, as they may fall out unexpectedly.

Assembly

1. Start this assembly procedure with the plug/stem assembly already installed in the bonnet.

2. Put the gaskets and cage onto the bonnet and plug.

3. Place the seat ring with the seat ring gasket onto the cage, if applicable with the valve design.

4. Raise this bonnet/plug/cage assembly up into the valve body. Make provision to prevent tipping of these parts as

they are being raised into the valve body.

5. Torque the bonnet nuts.

6. Mount the actuator.

Maintenance

Valve parts are subject to normal wear and must be inspected and replaced as necessary. Inspection and maintenance

frequency depends on the severity of service conditions. This section includes instructions for packing lubrication,

packing maintenance, trim maintenance, lapping metal seats, and ENVIRO‐SEAL bellows seal bonnet replacement. All

maintenance operations may be performed with the valve in the line.

WARNING

Avoid personal injury or property damage from sudden release of process pressure. 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

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

D Vent the pneumatic 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 additional measures that must be taken to protect against process

media.

CAUTION

Follow instructions carefully to avoid damaging the product surfaces, which could result in damage to the product.

Instruction Manual

D100399X012

EW Valve

July 2017

Note

Whenever a gasket seal is disturbed by removing or shifting gasketed parts, install a new gasket upon reassembly. This is necessary

to ensure a good gasket seal because the used gasket may not seal properly.

Figure 3. Lubricator and Lubricator/Isolating Valve (optional)

LUBRICATOR

LUBRICATOR/ISOLATING VALVE

10A9421‐A

AJ5428‐D

A0832‐2

Packing Lubrication

CAUTION

Do not lubricate graphite packing. Graphite packing is self-lubricated. Additional lubrication may result in slip-stick

movement of the valve.

Note

ENVIRO‐SEAL or HIGH‐SEAL packing does not require lubrication.

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 3) is provided for PTFE/composition or other packings that require

lubrication, it will be installed in place of the pipe plug (key 14, figure 21). Use a good quality silicon‐base lubricant. Do

not lubricate packing used in oxygen service or in processes with temperatures over 260_C (500_F). To operate the

lubricator, simply turn the cap screw clockwise to force the lubricant into the packing box. The lubricator/isolating

valve operates the same way, except open the isolating valve before turning the cap screw and then close the isolating

valve after lubrication is completed.

Instruction Manual

D100399X012

EW Valve

July 2017

Figure 4. PTFE V‐Ring Packing Arrangements

UPPER WIPER

(KEY 12)

PACKING

FOLLOWER

(KEY 13)

WASHER

(KEY 10)

SPRING

(KEY 8)

PACKING BOX

RING (KEY 11)

FEMALE

ADAPTOR

PACKING RING

MALE

ADAPTOR

LOWER WIPER

FEMALE

ADAPTOR

PACKING RING

MALE

ADAPTOR

LOWER WIPER

UPPER WIPER

(KEY 12)

PACKING

FOLLOWER

(KEY 13)

SPACER

(KEY 8)

PACKING BOX

RING (KEY 11)

FOR S31600 (316 SST) OR

S17400 (17‐4PH SST)

METAL PACKING BOX PARTS

FOR ALL OTHER METAL PACKING

BOX PART MATERIALS

SINGLE ARRANGEMENTS

NOTE:

PACKING SET (KEY 6) (2 REQ'D FOR DOUBLE ARRANGEMENTS).

12A7837−A/IL

B2398

UPPER WIPER

(KEY 12)

PACKING

FOLLOWER (KEY 13)

LANTERN RING

(KEY 8)

PACKING BOX

RING (KEY 11)

MALE ADAPTOR

PACKING RING

FEMALE ADAPTOR

LOWER WIPER

ASSEMBLY 1

(POSITIVE

PRESSURES)

ASSEMBLY 2

(VACUUM) ASSEMBLY 3

(POSITIVE

PRESSURES

& VACUUM)

ASSEMBLY 1

(POSITIVE

PRESSURES)

ASSEMBLY 2

(VACUUM) ASSEMBLY 3

(POSITIVE

PRESSURES

& VACUUM)

ASSEMBLY 1

(POSITIVE

PRESSURES)

ASSEMBLY 2

(VACUUM) ASSEMBLY 3

(POSITIVE

PRESSURES

& VACUUM)

9.5 mm (3/8 INCH) STEM 12.7 mm (1/2 INCH) STEM 19.1, 25.4, OR 31.8 mm

(3/4, 1, OR 1‐1/4 INCH) STEM

DOUBLE ARRANGEMENTS

12A8187-C 12A7814-C 12A7839-A

B1428‐2

Instruction Manual

D100399X012

EW Valve

July 2017

Packing Maintenance

Note

For valves with ENVIRO‐SEAL live‐loaded packing, see the Fisher instruction manual, ENVIRO‐SEAL Packing System for Sliding‐Stem

Valves, D101642X012, for packing instructions. For valves with HIGH‐SEAL live‐loaded packing, see the Fisher instruction manual,

HIGH‐SEAL Live‐Loaded Packing System, D101453X012, for packing instructions.

Key numbers refer to figure 4 for PTFE V‐ring packing and to figure 5 for PTFE/composition packing, unless otherwise

indicated.

For spring‐loaded single PTFE V‐ring packing, the spring (key 8, figure 4) maintains a sealing force on the packing. If

leakage is noted around the packing follower (key 13, figure 4), check to be sure the shoulder on the packing follower

is touching the bonnet. If the shoulder is not touching the bonnet, tighten the packing flange nuts (key 5, figure 21)

until the shoulder is against the bonnet. If leakage cannot be stopped in this manner, go to the Replacing Packing

procedure.

Figure 5. Detail of PTFE/Composition Packing Arrangements

UPPER WIPER

(KEY 12)

PACKING

FOLLOWER

(KEY 13)

LANTERN RING

(KEY 8)

PACKING BOX

RING (KEY 11)

PACKING RING

(KEY 7)

9.5 mm

(3/8 INCH)

STEM

12.7 mm

(1/2 INCH)

STEM

19.1, 25.4, OR

31.8 mm

(3/4, 1, OR

1‐1/4 INCH) STEM

TYPICAL (DOUBLE) ARRANGEMENTS

12A8188‐A

12A7815‐A

12A8173‐A

A2619‐1

If there is undesirable packing leakage with other than spring‐loaded packing, first try to limit the leakage and

establish a stem seal by tightening the packing flange nuts.

If the packing is relatively new and tight on the stem and if tightening the packing flange nuts does not stop the

leakage, the valve stem may be worn or nicked so that a seal cannot be made. The surface finish of a new valve stem is

critical for making a good packing seal. If the leakage comes from the outside diameter of the packing, the leakage

may be caused by nicks or scratches around the packing box wall. If performing any of the following procedures,

inspect the valve stem and packing box wall for nicks and scratches.

Replacing Packing

WARNING

Avoid personal injury or property damage from sudden release of process pressure. Before performing any maintenance

operations:

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