Figure 1. Fisher EZ Valve with 657 Actuator and
DVC6000 Digital Valve Controller
W8120A-1
Introduction
Scope of Manual
This instruction manual includes installation, maintenance, and parts information for NPS 1/2 through 4 Fisher EZ
valves through CL600 ratings. Refer to separate manuals for instructions covering the actuator and accessories.
Do not install, operate, or maintain an EZ 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 Process Management sales office before
proceeding.
Description
EZ valves (figure 1) are globe-style with integral end connections, post guiding, and quick-change trim. These valves
are used in chemical or hydrocarbon processing applications or in applications that require control of nonlubricating,
viscous, or other hard-to-handle fluids.
www.Fisher.com
EZ Valve
June 2014
Table 1. Specifications
Instruction Manual
D100401X012
End Connection Styles
Cast Iron Valves
Flanged: CL125 flat-face or 250 raised-face flanges per
ASME B16.1
Steel and Stainless Steel Valves
Flanged: CL150, 300, and 600 raised-face or ring-type
joint flanges per ASME B16.5
Screwed or Socket Welding: Consistent with ASME
B16.11
Buttwelding: All available ASME B16.25 schedules that
are consistent with ASME B16.34
Maximum Inlet Pressure
Cast Iron Valves
Flanged: Consistent with CL125B or 250B per ASME
B16.1
Steel and Stainless Steel Valves
Flanged: Consistent with CL150, 300, or 600 per ASME
B16.34
Screwed or Welding: Consistent with CL600 per ASME
B16.34
1. The pressure/temperaturelimits in this manual and any applicable standardor code limitation forvalve should not beex ceeded.
(1)
Shutoff Classifications per ANSI/FCI 70-2
and IEC 60534-4
Metal Seats: ClassIVisstandard,ClassVisoptional
PTFE Composition Seats: Class VI
Flow Characteristics
J Equal percentage, J quick opening, and J linear
Flow Direction
Up through the seat ring
Approximate Weights
NPS 1/2 and 3/4 Valves: 9.1 kg (20 pounds)
NPS 1 Valve: 11 kg (25 pounds)
NPS 1-1/2 Valve: 18 kg (40 pounds)
NPS 2 Valve: 36 kg (80 pounds)
NPS 3 Valve: 54 kg (120 pounds)
NPS 4 Valve: 75 kg (165 pounds)
Specifications
Typical specifications for these valves are shown in table 1.
Educational Services
For information on available courses for the Fisher EZ valve, as well as a variety of other products, contact:
Emerson Process Management
Educational Services - Registration
Phone: 1-641-754-3771 or 1-800-338-8158
E-mail: education@emerson.com
http://www.emersonprocess.com/education
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 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.
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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.
EZ Valve
June 2014
Figure 2. Optional Packing Lubricator and Lubricator/Isolating Valve
LUBRICATOR
10A9421-A
AJ5428-D
A0832-2
LUBRICATOR/ISOLATING VALVE
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 Process Management sales office.
1. Before installing the valve, inspect it and any associated equipment for damage and any foreign material. Make
certain the valve interior is clean, that pipelines are free of foreign material, and that the valve is oriented so that
pipelineflowisinthesamedirectionasthearrowonthesideofthevalve.
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
seat ring retainer wear, and 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.
3. Use accepted piping and welding practices when installing the valve in the line. Internal elastomeric parts may stay
in place during the welding procedure. For flanged valves, use a suitable gasket between the valve body flange 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. Shrunk-fit pieces and threaded connections may also loosen. In
general, if post weld heat treating is to be performed, all trim parts should be removed. Contact your Emerson Process
Management sales office for additional information.
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4. With a leak-off bonnet construction, remove the pipe plugs (key 14) 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.
5. 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 Heavy-Duty live-loaded packing will not require this initial
re-adjustment. See the Fisher instruction manuals titled ENVIRO-SEAL Packing System for Sliding-Stem Valves or
Heavy-Duty Live-Loaded Packing System (as appropriate) for packing instructions. If you wish to convert your present
packing arrangement to ENVIRO-SEAL packing, refer to the retrofit kits listed inthePartsKitssub-sectionneartheend
of this manual.
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, and ENVIRO-SEAL bellows seal 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 or bursting 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 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.
Note
Whenever a gasket seal is disturbed by removing or shifting gasketed parts, a new gasket should be installed upon reassembly.
This is necessary to ensure a good gasket seal since the used gasket may not seal properly.
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Note
If the valve has ENVIRO-SEAL or HIGH-SEAL live-loaded packing installed, refer to instruction manuals ENVIRO-SEAL Packing
System for Sliding Stem Valves, D101642X012, or HIGH-SEAL Live Loaded Packing System, D101453X012, for packing
instructions. Figure 6 shows a typical HIGH-SEAL packing system. Figures 7 and 8 show typical ENVIRO-SEAL systems.
Figure 3. PTFE V-Ring Packing Arrangements for Plain and Extension Bonnets
UPPER WIPER
(KEY 12)
PACKING
FOLLOWER
(KEY 13)
WASHER
(KEY 10)
SPRING
(KEY 8)
PACKING BOX
RING (KEY 11)
METAL PACKING BOX PARTS
PART OF PACKING SET
(KEY 6) (SEE PARTS LIST)
12A37837-A
B1429-5*
FOR 316 SST
FEMALE
ADAPTOR
PACKING RING
MALE
ADAPTOR
LOWER WIPER
SINGLE ARRANGEMENTS
FEMALE
ADAPTOR
PACKING RING
MALE
ADAPTOR
LOWER
WIPER
FOR N04400/N05500
PACKING BOX PART MATERIALS
UPPER WIPER
(KEY 12)
PACKING
FOLLOWER
(KEY 13)
SPACER (KEY 8)
PACKING BOX
RING (KEY 11)
UPPER WIPER
(KEY 12)
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)
9.5 mm (3/8 INCH) STEM12.7 mm (1/2 INCH) STEM19.1 mm (3/4 INCH) STEM
B1428-5*
DOUBLE ARRANGEMENTS
ASSEMBLY 3
(POSITIVE
PRESSURES &
VACUUM)
PACKING FOLLOWER
(KEY 13)
MALE ADAPTOR
(KEY 31)
PACKING RING
(KEY 7)
FEMALE ADAPTOR
(KEY 32)
LANTERN RING
(KEY 8)
PACKING BOX
RING (KEY 11)
LOWER WIPER
(KEY 30)
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Instruction Manual
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Packing Lubrication
Note
ENVIRO-SEAL or HIGH-SEAL packing does not require lubrication.
If an optional lubricator or lubricator/isolating valve (figure 2) is provided for PTFE/composition or other packings that
require lubrication, it will be installed in an optional tapped hole in the bonnet. Use a good quality silicon-base
lubricant. Packing used in oxygen service or in processes with temperatures over 260_C (500_F) should not be
lubricated. To operate the lubricator, simply turn the cap screw clockwise to force the lubricant into the packing box.
The lubricator/isolating valve must first be opened and then closed after lubrication is completed.
Figure 4. PTFE/Composition Packing Arrangements for Plain and Extension Bonnets
UPPER WIPER
(KEY 12)
PACKING FOLLOWER
(KEY 13)
PACKING RING
(KEY 7)
LANTERN RING
(KEY 8)
PACKING BOX
RING (KEY 11)
12A8188-A12A7815-A
9.5 mm (3/8 INCH) STEM12.7 mm (1/2 INCH) STEM19.1 mm (3/4 INCH) STEM
B0968-1*
PTFE/COMPOSITION PACKING
12A8173-A
Packing Maintenance
This section covers PTFE V-ring, PTFE/composition, and graphite/ribbon packing as used in plain and extension
bonnets. Unless otherwise indicated, key numbers refer to figure 3 for PTFE V-ring packing, figure 4 for
PTFE/composition packing, and figure 5 for graphite ribbon/filament packing.
For spring-loaded single PTFE V-ring packing, the spring (key 8, figure 3) maintains a sealing force on the packing. If
leakage is noted around the packing follower (key 13, figure 3), 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 11),
until the shoulder is against the bonnet. If leakage cannot be stopped in this manner, proceed to the Replacing
Packing procedure.
If there is unacceptable 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.
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June 2014
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 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.
An illustration of a HIGH-SEAL live-loaded packing system is shown in figure 6. Illustrations of ENVIRO-SEAL live-loaded
packing systems are shown in figures 7, 8, and 9.
Figure 5. Graphite Ribbon/Filament Packing Arrangements for Plain and Extension Bonnets
3. For other materials, contact your Emerson Process Management sales office for torques.
Figure 6. Typical HIGH-SEAL Graphite ULF
Packing System
(1, 3)
Bolt Material
(2)
Figure 7. Typical ENVIRO-SEAL Packing System with
PTFE Packing
HEX NUT
(KEY 212)
PACKING
FLANGE
(KEY 201)
ANTIEXTRUSION
WASHERS
1
STUD
(KEY 200)
SPRING
PACK
ASSEMBLY
(KEY 217)
LANTERN
RINGS
(KEY 216)
39B4153-A
1. Find number 219 not required with 3/8-inch stem
PACKING
SET
(KEY 215)
LOWER WIPER
(KEY 218)
A6297
Note:
For PTFE packing,tighten thepacking box hexnuts until the top of the flangeis even
1
with the top of thesleeve on the follower (spring pack assembly).
PACKING
BOX RING
(KEY 211)
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June 2014
Figure 8. Typical ENVIRO-SEAL Packing System with
Graphite ULF Packing
STUD
(KEY 200)
HEX NUT
(KEY 212)
PACKING
FLANGE
(KEY 201)
PACKING
RING
(KEY 209)
PACKING
RING
(KEY 210)
PACKING
BOX RING
(KEY 211)
39B4612/A
SPRING
ASSEMBLY
(KEY 217)
BUSHING
(KEY 207)
PACKING
WASHERS
(KEY 214)
BUSHING
(KEY 208)
PACK
GUIDE
GUIDE
Figure 9. Typical ENVIRO-SEAL Packing System with
Duplex Packing
200
212
201
215
216
207
209
211
24B9310
A6722/IL
213
217
207
207
214
207
Replacing Packing
WARNING
Observe the warning at the start of the Maintenance section.
This section covers replacing packing used in plain and extension bonnets. PTFE V-ring packing is shown in figure 3,
PTFE/composition packing is shown in figure 4, and graphite/ribbon packing is shown in figure 5.
1. Isolatethecontrolvalvefromthelinepressure,releasepressure from both sides of the valve body, and drain the
process media from both sides of the valve. If using a power actuator, also shut off all pressure lines to the power
actuator,andreleaseallpressurefromtheactuator.Uselock-outprocedurestobesurethattheabovemeasures
stay in effect while you work on the equipment.
2. Disconnect the operating lines from the actuator and any leak-off piping from the bonnet. Disconnect the stem
connector and then remove the actuator from the valve by unscrewing the yoke locknut (key 15, figure 11).
WARNING
To avoid personal injury or property damage caused by uncontrolled movement of the bonnet, loosen the bonnet by
following the instructions in the next step. Do not remove a stuck bonnet by pulling on it with equipment that can stretch
or store energy in any other manner. The sudden release of stored energy can cause uncontrolled movement of the bonnet.
If the seat ring retainer sticks to the bonnet, proceed carefully with bonnet removal.
Note
The following step also provides additional assurance that the valve body f luid pressure has been relieved.
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3. Hex nuts (key 16, figure 11) attach the bonnet to the valve. Loosen these nuts or cap screws approximately 3 mm
(1/8-inch). Then loosen the body-to-bonnet g asketed joint by either rocking the bonnet or prying between the
bonnet and valve body. Work the prying tool around the bonnet until the bonnet loosens.
4. Loosen the packing flange nuts (key 5, figure 11) so that the packing is not tight on the valve stem. Remove any
travel indicator parts and stem locknuts from the valve stem threads.
CAUTION
Avoid damaging the seating surface caused by the valve plug and stem assembly dropping from the bonnet after being
lifted part way out. When lifting the bonnet, temporarily install a valve stem locknut on the valve stem. This locknut will
prevent the valve plug and stem assembly from dropping out of the bonnet.
5. Completely remove the cap screws (not shown) or hex nuts (key 16, figure 12) that bolt the bonnet and valve body
together and carefully lift the bonnet off.
6. Remove the locknut and separate the valve plug and stem from the bonnet. Set the parts on a protective surface to
prevent damage to gasket or seating surfaces.
7. Remove the bonnet gasket (key 10, figure 12) and cover the opening in the valve to protect the gasket surface and
to prevent foreign material from getting into the valve body cavity.
8. Remove the packing flange nuts, packing flange, upper wiper, and packing follower (keys 5, 3, 12, and 13, figure
11). Carefully push out all the remaining packing parts from the valve side of the bonnet using a rounded rod or
other tool that will not scratch the packing box wall. Clean the packing box and the metal packing parts.
9. Inspect the valve stem threads and the packing box surfaces for any sharp edges which might cut the packing.
Scratches or burrs could cause packing box leakage or damage to the new packing. If the surface condition cannot
be improved by light sanding, replace the damaged parts.
10. Remove the covering protecting the valve cavity and install a new bonnet gasket (key 10,figure12),makingsure
the gasket seating surfaces are clean and smooth. Then slide the bonnet over the stem and onto the stud bolts (key
15,figure12),orontothevalvecavityifcapscrews(notshown)areusedinstead.
Note
Proper performance of the tightening procedures in step 11 compresses the spiral wound gasket (key 12, figure 12) enough to
both load and seal the seat ring gasket (key 13, figure 12). The tightening procedures also compresses the outer edge of the
bonnet gasket (key 10, figure 12) enough to seal the body-to-bonnet joint.
The accepted bolting procedures referred to in step 11 include--but are not limited to--ensuring that bolting threads are clean, and
evenly tightening the cap screws, or the nuts onto the studs, in a crisscross pattern. Because of the boltup characteristics of spiral
wound gaskets, tightening one cap screw or nut may loosen an adjacent cap screw or nut. Repeat the crisscross tightening pattern
several times until each cap screw or nut is tight and the body-to-bonnet seal is made. When the operating temperature has been
reached, perform this torquing procedure once again.
Note
Stud(s) and nut(s) should be installed such that the manufacturer's trademark and material grade marking is visible, allowing easy
comparison to the materials selected and documented in the Emerson/Fisher serial card provided with this product.
WARNING
Personal injury or damage to equipment could occur if improper stud and nut materials or parts are used. Do not operate or
assemble this product with stud(s) and nut(s) that are not approved by Emerson/Fisher engineering and/or listed on the
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serial card provided with this product. Use of unapproved materials and parts could lead to stresses exceeding the design
or code limits intended for this particular service. Install studs with the material grade and manufacturer's identification
mark visible. Contact your Emerson Process Management representative immediately if a discrepancy between actual
parts and approved parts is suspected.
EZ Valve
June 2014
11. Install bolting, using accepted bolting procedures during tightening so that the body-to-bonnet joint can
withstand test pressures and application service conditions. The bolt torques in table 2 may be used as guidelines
unless accepted bolting procedures dictate otherwise.
12. Install new packing and the metal packing box parts according to the appropriate arrangement in figure 3, 4, or 5.
If split-ring packing is being added, alternatethepositionofthesplitstoavoidaleakpath.Placeasmooth-edged
pipe over the valve stem and gently tap each soft packing part into the packing box, being sure that air is not
trapped between adjacent soft parts.
Installation of graphite ribbon packing requires special care to avoid trapping air between the rings. Start with only one
ring at a time without forcing the top of the packing ring below the bottom of the entrance chamfer of the packing
box. Thus, when a ring is added, the stack should not be pushed into the cavity more than the thickness of the added
ring.
13. Slide the packing follower, upper wiper, and packing flange (keys 13, 12, and 3, figure 11) into position. Lubricate
the packing flange studs (key 4, figure 11) and the faces of the packing flange nuts (key 5, figure 11). Install the
packing flange nuts.
Note
The torque values discussed in step 14 and shown in table 3 are recommended guidelines only and are presented as a starting
point for this procedure. Tightening the packing flange nuts to a torque value that exceeds the table guidelines, in order to obtain
a seal, may indicate other problems.
14. For spring-load ed PTFE V-ring packing, tighten the packing flange nuts until the shoulder on the packing follower
(key 13, figure 11) contacts the bonnet.
For graphite packing, tighten the packing flange nuts to the maximum recommended torque shown in table 3. Then,
loosen the packing flange nuts, and retighten them to the recommended minimumtorqueshownintable3.
For other packing types, tighten the packing flange nuts alternately in small equal increments until one of the nuts
reaches the minimum recommended torque shown in table 3. Then, tighten the remaining flange nuts until the
packing flange is level and at a 90-degree angle to the valve stem.
For ENVIRO-SEAL or HIGH-SEAL live-loaded packing, refer to the note at the beginning of the Maintenance section on
page 5 of this manual.
15. Mounttheactuatoronthevalvebodyandreconnecttheactuatorandvalvestemaccordingtotheprocedurein
the appropriate actuator instruction manual.
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Table 3. Recommended Torque for Packing Flange Nuts (Not for Spring-Loaded Packing)
Observe the warning at the start of the Maintenance section.
This procedure describes how the valve trim can be completely disassembled. When inspection or repairs are required,
perform only those steps necessary to accomplish the task.
Disassembly
Except where indicated, key numbers referenced in the following steps are found in figure 12.
1. Remove the actuator and the bonnet according to steps 1 through 6 of the Replacing Packing procedure of the
Maintenance section.
WARNING
Avoid personal injury or property damage from valve or packing leakage.
Any damage to the gasket sealing surfaces could cause the valve to leak.
The surface finish of the valve stem (key 7) is critical for making a good packing seal. The inside surface of the seat ring
retainer is critical for smooth operation of the valve plug.
The seating surfaces of the valve plug and seat ring (keys 2 and 9) are critical for proper shutoff.
Protect these parts accordingly while disassembling the trim. Gasket selection criteria is provided on page 38 of this
instruction manual.
2. Packing parts can be removed if desired. Replace these parts as described in the Replacing Packing procedure.
Valves with Plain or Extension Bonnets
Perform the following steps to remove the valve trim.
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1. Lift the valve plug and stem assembly [or the plug guide, disk retainer, and disk (keys 27, 28, and 29, figure 13) if
used], out of the valve body and set it on a protective surface.
Note
With some valve plug sizes and configurations, the seat ring retainer and bushing assembly (keys 3 and 26, figures 12 and 13) will
come out of the valve body with the valve plug and stem assembly, and in other valve plug sizes and configurations, the valve plug
or tip will slide through the seat ring retainer and bushing assembly, leaving the retainer and bushing assembly in the valve body.
2. With the valve plug and stem assembly out of the valve, either slide the seat ring retainer and bushing assembly
(keys 3 and 26), and gaskets and shim (keys 10, 12, and 25) up over the valve plug and stem or lift the seat ring
retainer and bushing assembly and associated gaskets and shim out of the valve body. If the valve plug is to be
reused, protect the valve plug seating surface to prevent scratches.
3. For valves with metal seats, driveoutthepin(key8)andunscrewthevalve stem (key 7) from the valve plug (key 2).
4. For valves with 0.25 and 0.375-inch ports and composition seats, refertofigure13.Driveoutthepin(key8)and
unscrewthevalvestem(key7)fromthevalveplugguide(key27).Unscrewthediskretainer(key28)fromthevalve
plug guide. Remove the disk (key 29) from the valve plug tip (key 30).
Forvalveswith0.5through2-inchportsandcompositionseats,refertofigure13.Driveoutthepin(key8)and
unscrew the valve stem (key 7) from the valve plug guide (key 27). Drive out pin (key 31) and unscrew the tip (key 30)
from the valve plug guide. Remove the disk (key 29) from the valve plug guide.
For valves with 3 and 4-inch ports and composition seats, refertofigure13.Driveoutthepin(key8)andunscrewthe
valve stem from the valve plug guide (key 27). Remove the cap screw (key 32) to remove the tip (key 30) from the
valveplugguide.Removethedisk(key29).
5. Remove the seat ring and seat ring gasket (keys 9 and 13).
6. Inspect parts for wear or damage that would prevent proper operation of the valve. Replace or repair trim parts
according to the following Lapping Metal Seats or Assembly procedure as appropriate.
Valves with Overtravel (EZ-OVT) Trim
Perform the following steps to remove the valve trim.
1. Lift the bonnet flat sheet gasket, gasket shim, and spiral wound gasket (keys 10, 25, and 12) from the valve body.
Discardtheoldgaskets.
2. Lift the valve plug and stem assembly (key 30, figure 13) out of the valve body and set it on a protective surface.
Note
The seat ring retainer and bushing assembly (keys 3 and 26) will come out of the valve body with the valve plug and stem
assembly.
3. Lift the seat ring (key 9) out of the valve body. There will be a flat sheet gasket located between the seat ring and
valve body shelf (key 13). If the gasket does not come out of the valve body with the seat ring, be sure to remove
the gasket from the valve body. Discard the gasket and tape or otherwise protect the seating surface of the seat
ring to prevent damage.
4. Inspect all parts for wear and damage which would prevent proper operation of the valve. All gasket surfaces on the
trim parts and in the valve body must be cleaned of any graphite residue and must be free from nicks and scratches.
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The seating surfaces of the valve plug post and seat ring must be free from nicks, scratches, or any other damage
which could affect the proper shutoff. Replace or repair trim parts as appropriate.
Note
If the soft seat disk is damaged, the entire plug assembly must be replaced.
Valves with ENVIRO-SEAL Bellows Seal Bonnets
Perform the following steps to remove the valve trim.
1. Lift the stem/bellows assembly with valve plug attached [or the plug guide, disk retainer, and disk (keys 27, 28, and
29, figure 13) if used], seat ring retainer and gaskets out of the valve body and set them on a protective surface.
Note
With some valve plug sizes and configurations, the seat ring retainer and bushing assembly (keys 3 and 26, figures 12 and 13) will
come out of the valve body with the stem/bellows, and in other valve plug sizes and configurations, the valve plug or tip will slide
through the seat ring retainer and bushing assembly, leaving the retainer and bushing assembly in the valve body.
2. If the seat ring retainer and bushing assembly (keys 3 and 26) stayed in the valve, lift them out along with gaskets
and shim (keys 10, 12, and 25).
3. If the seat ring retainer and bushing assembly (keys 3 and 26) came out of the valve with the stem/bellows
assembly, move the seat ring retainer and bushing assembly against the shoulder of the valve plug (key 2) or valve
plug guide (key 27, figure 13) to provide access to the pin (key 36, figure 11).
VALVE STEMBOLT TORQUE
mmInchNSmLbfSftmmInch
9.5
12.7
19.0
3/8
1/2
3/4
40-47
81-115
237-339
25-35
60-85
175-250
DRILL SIZE,
INCH
3/32
1/8
3/16
16
19
25
DDIMENSION
0.625
0.75
1
Figure 10. Bolt Torque for Plug/Stem Connection and Plug/Adaptor Connection and Pin Replacement
D
D
GROOVE PIN
CU8376-C
35A5717-C
A2415-2
MICRO-FLUTE
FULL SIZE AND RESTRICTED
4. Place the stem/bellows assembly and valve plug or valve plug guide in a soft-jaw chuck or other type of vise so that
thejawsgripaportionofthevalveplugorvalveplugguidethatisnotaseatingorguidingsurface.Driveoutthepin
(key 36, figure 11).
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EZ Valve
June 2014
5. Remove the stem/bellows assembly from the soft-jaw chuck or vise. Place a wrench on the flat areas on the valve
stem just below the threads for the actuator/stem connection to keep the stem from turning. Then, unscrew the
adaptor (key 24, figure 11), which also includes the valve plug (key 2) or valve plug guide (key 27, figure 13), from
the stem/bellows assembly (key 20, figure 11).
6. Remove the seat ring retainer and bushing assembly (keys 3 and 26) by sliding it over the adaptor. If the valve plug
is to be reused, protect the valve plug seating surface to prevent scratches.
7. For valves with metal seats, driveoutthepin(key8)andunscrewtheadaptor(key24,figure11)fromthevalve
plug (key 2).
8. For valves with 0.25 and 0.375-inch ports and composition seats, refer to figure 13. Drive out the pin (key 8) and
unscrew the adaptor (key 24, figure 11) from the valve plug guide (key 27). Unscrew the disk retainer (key 28) from
thevalveplugguide.Removethedisk(key29)fromthevalveplugtip(key30).
Forvalveswith0.5through2-inchportsandcompositionseats,refertofigure13.Driveoutthepin(key8)and
unscrew the adaptor (key 24, figure 11) from the valve plug guide (key 27). Drive out the pin (key 31) and unscrew the
tip (key 30) from the valve plug guide. Remove thedisk(key29)fromthevalveplugguide.
For valves with 3 and 4-inch ports and composition seats, refer to figure 13. Drive out the pin (key 8) and unscrew the
adaptor (key 24, figure 11) from the valve plug guide (key 27). Remove the cap screw (key 32) to remove the tip (key
30)fromthevalveplugguide.Removethedisk(key29).
9. Remove the seat ring and seat ring gasket (keys 9 and 13).
10. Inspect parts for wear or damage that would prevent proper operation of the valve. Replace or repair trim parts
according to the following Assembly procedure as appropriate.
Lapping Metal Seats on Valves with Plain and Extension Bonnets
CAUTION
To avoid damaging the ENVIRO-SEAL Bellows Seal Bonnet assembly, do not attempt to lap the metal seating surfaces on
valves with ENVIRO-SEAL bellows seal bonnets. The design of the bonnet assembly prevents rotation of the stem and any
forced lapping rotation will damage internal components of the ENVIRO-SEAL Bellows Seal bonnet.
With metal-seat constructions, seating surfaces of the valve plug and seat ring (key 2, figure 12) can be lapped for
improved shutoff. (Deep nicks should be machined out rather than ground out.) Use a good quality lapping compound
of a mixture of 280 to 600-grit. Apply the compound to the bottom of the valve plug.
Assemble the valve to the extent that the seat ring retainer is in place and the bonnet is bolted to the valve body. A
simplehandlecanbemadefromapieceofstrapironlockedtothevalveplugstemwithnuts.Rotatethehandle
alternately in each direction to lap the seats. After lapping, remove the bonnet and clean the seat surfaces. Completely
assemble as described in the assembly portion of the Trim Maintenance procedure and test the valve for shutoff.
Repeat the lapping procedure if leakage is still excessive.
Note
EZ valves with Overtravel (EZ-OVT) trim should not be lapped.
Assembly
This procedure assumes that all the trim and associated gaskets were removed from the valve body. If these parts were
not all removed, start the assembly procedure at the appropriate step. Except where indicated, key numbers
referenced in the following steps are found in figure 12.
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Valves with Plain or Extension Bonnets
Perform the following steps to assemble and install the trim.
CAUTION
To avoid weakening the stem that may cause failure in service, 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,which will weaken the stem. However, a used valve plug
may be reused with a new stem.
1. For valves with metal seats, screwthevalvestem(key7)intothevalveplug(key2).Tightentothetorquevalue
given in figure 10. Refer to figure 10 to select the proper drill size. Drill through the stem using the hole in the valve
plug as a guide. Remove any chips or burrs and drive in a new pin (key 8) to lock the assembly.
2. For valves with 0.25 and 0.375-inch ports and composition seats, refer to figure 13. Place the disk (key 29) on the
valve plug tip (key 30). Place the disk retainer (key 28) over the disk, and then thread the disk retainer onto the valve
plug guide (key 27).
CAUTION
To avoid failure in service for valves with 0.5 through 1-inch ports and composition seats, never reuse an old valve plug
guide with a new valve plug tip. Using an old valve plug guide with a new plug tip requires drilling a new pin hole in the
valve plug guide, which will weaken the guide. However, a used valve plug tip may be reused with a new valve plug guide.
Forvalveswith0.5through1-inchportsandcompositionseats,refertofigure13.Insert the disk (key 29) in the valve
plugguide(key27).Screwthetip(key30)ontothevalveplugguidetoclampthediskinplace.Usinga3/32-inchbit,
drill through the valve plug guide using the hole in the tip as a drilling guide. Remove any chips or burrs and drive in a
new pin (key 31).
CAUTION
To avoid failure in service for valves with 1.5 and 2-inch ports and composition seats, never reuse an old valve plug tip with
a new valve plug guide. Using an old valve plug tip with a new valve plug guide requires drilling a new pin hole in the valve
plug tip which will weaken the tip. However, a used valve plug guide may be reused with a new valve plug tip.
For valves with 1.5 and 2-inch p orts and composition seats, refer to figure 13. Insertthedisk(key29)inthevalveplug
guide (key 27). Screw the tip (key 30) into the valve plug guide to clamp the disk in place. Using a 3/32-inch bit, drill
through the valve plug tip using the hole in the valve plug guide as a drilling guide. Remove any chips or burrs and
drive in a new pin (key 31).
For valves with 3 and 4-inch ports and composition seats, refer to figure 13. Insertthedisk(key29)inthevalveplug
guide(key27).Placethetip(key30)againstthevalveplugguidetoclampthediskinplace.Insertthecapscrew(key
To avoid failure in service, never reuse an old stem with a new valve plug guide. Using an old stem with a new valve plug
guide requires drilling a new pin hole in the stem, which will weaken the stem. However, a used valve plug guide may be
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Instruction Manual
D100401X012
reused with a new stem except for valves with 0.5 through 1-inch ports and composition seats (see to figure 13). For these
constructions, a used valve plug guide should only be used if the tip is reused.
EZ Valve
June 2014
3. For all valves with composition seats, screw the valve stem (key 7) into the valve plug guide (key 27, figure 13).
Tighten to the torque value given in figure 10. Refer to figure 10 to select the proper drill size. Drill through the
stem, using the hole in the valve plug guide as a drilling guide. Remove any chips or burrs and drive in a new pin (key
8) to lock the assembly.
4. Install the seat ring gasket (key 13), and replace the seat ring (key 9).
Note
With some valve plug sizes and configurations, the valve plug or tip will slide through the seat ring retainer and bushing assembly
(keys 3 and 26), and in other configurations it won't.
5. If the valve plug (key 2) or valve plug tip (key 30, figure 13) will not slide through the seat ring retainer and bushing
assembly (keys 3 and 26), proceed as follows:
a. Place the seat ring retainer and bushing assembly (keys 3 and 26) over the stem of valve plug and stem assembly
oroverthestemofthevalveplugguideandstemassembly.
b. Install the seat ring retainer and bushing assembly, which also includes the valve plug and stem assembly or
valve plug guide and stem assembly, on the top of the seat ring, ensuring that the seat ring retainer slips onto
the seat ring properly. Any rotation orientation of the seat ring retainer with respect to the valve body is
acceptable.
c. Place the spiral wound gasket, shim, and bonnet gasket (keys 12, 25, and 10) on the shoulder of the seat ring
retainer.
6. If the valve plug (key 2) or the valve plug tip (key 30, figure 13) will slide through the seat ring retainer and bushing
assembly (keys 3 and 26), proceed as follows:
a. Install the seat ring retainer and bushing assembly on the top of the seat ring, ensuring that the seat ring retainer
slips onto the seat ring properly. Any rotation orientation of the seat ring retainer with respect to the valve body
is acceptable.
b. Place the spiral wound gasket, shim, and bonnet gasket (keys 12, 25, and 10) on the shoulder of the seat ring
retainer.
c. Slide the valve plug and stem assembly or the valve plug guide and stem assembly into the seat ring retainer and
bushing assembly (keys 3 and 26).
7. Mount the bonnet on the valve body and complete the assembly according to steps 10 through 15 of the Replacing
Packingprocedure,omittingsteps12and13ifnewpackingisnotbeinginstalled,andbeingsuretoobservethe
note prior to step 11.
Valves with Overtravel (EZ-OVT) Trim
Perform the following steps to assemble and install the trim
1. Install the seat ring gasket (key 13) and replace the seat ring (key 9).
2. Place the seat ring retainer and bushing assembly (key 3) over the stem of the valve plug and stem assembly (key
30, figure 13).
3. Install the seat ring retainer and bushing assembly, which also includes the valve plug and stem assembly, on top of
the seat ring. Ensure that the seat ring retainer slips onto the seat ring properly. Any rotation orientation of the seat
ring retainer with respect to the valve body is acceptable.
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4. Place the spiral wound gasket, shim, and bonnet gasket (keys 12, 25, 10) on the shoulder of the seat ring retainer.
5. Mount the bonnet on the valve body and complete the assembly according to steps 10 through 15 of the Replacing
Packingprocedure,omittingsteps12and13ifnewpackingisnotbeinginstalled.Besuretoobservethenoteprior
to step 11.
Note
When connecting the valve stem to the stem connecting block on the actuator, extra stem force is required on the valve plug to
ensure proper seating of the plug to the seat ring. This is required to deform the soft seat disk ensuring a backup metaltometal
mating surface between the valve plug guide post and the seat ring.
Valves with ENVIRO-SEAL Bellows Seal Bonnets
Perform the following steps to assemble and install the trim.
1. For valves with 0.25 and 0.375-inch ports and composition seats, refer to figure 13. Place the disk (key 29) on the
valve plug tip (key 30). Place the disk retainer (key 28) over the disk, and then thread the disk retainer onto the valve
plug guide (key 27).
CAUTION
To avoid failure in service of valves with 0.5 through 1-inch ports and composition seats, never reuse an old valve plug
guide with a new valve plug tip. Using an old valve plug guide with a new plug tip requires drilling a new pin hole in the
valve plug guide, which will weaken the guide. However, a used valve plug tip may be reused with a new valve plug guide.
Forvalveswith0.5through1-inchportsandcompositionseats,refertofigure13.Insert the disk (key 29) in the valve
plugguide(key27).Screwthetip(key30)ontothevalveplugguidetoclampthediskinplace.Usinga3/32-inchbit,
drill through the valve plug guide using the hole in the tip as a drilling guide. Remove any chips or burrs and drive in a
new pin (key 31).
CAUTION
To avoid failure in s ervice of valves with 1.5 and 2-inch ports and composition seats, never reuse an old valve plug tip with a
new valve plug guide. Using an old valve plug tip with a new valve plug guide requires drilling a new pin hole in the valve
plug tip, which will weaken the tip. However, a used valve plug guide may be reused with a new valve plug tip.
For valves with 1.5 and 2-inch p orts and composition seats, refer to figure 13. Insertthedisk(key29)inthevalveplug
guide (key 27). Screw the tip (key 30) into the valve plug guide to clamp the disk in place. Using a 3/32-inch bit, drill
through the valve plug tip using the hole in the valve plug guide as a drilling guide. Remove any chips or burrs and
drive in a new pin (key 31).
For valves with 3 and 4-inch ports and composition seats, refer to figure 13. Insertthedisk(key29)inthevalveplug
guide(key27).Placethetip(key30)againstthevalveplugguidetoclampthediskinplace.Insertthecapscrew(key
To avoid weakening the adaptor that may cause failure in service, never reuse an old adaptor with a new valve plug or valve
plug guide. Using an old adaptor with a new valve plug or valve plug guide requires drilling a new pin hole in the adaptor,
which will weaken the adaptor. However, a used valve plug or valve plug guide may be reused with a new adaptor.
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2. Threadthevalveplug(key2)or,thevalveplugguide(key27,figure13)ifthevalvehascompositionseats,ontothe
adaptor (key 24, figure 11). Tighten to the torque valve given in figure 10.
Note
Valve plugs may not be pre-drilled. Follow the procedure in the following step.
3. If the valve plug is not pre-drilled, drill a hole according to figure 10. Otherwise, select the proper drill size (figure
10) and drill through the adaptor using the hole in the valve plug as a guide. Remove any chips or burrs and drive in
anewpin(key8)tolocktheassembly.
Note
With some valve plug sizes and configurations, the valve plug or tip will slide through the seat ring retainer and bushing assembly,
and in other configurations it won't.
4. If the valve plug (key 2) or valve plug tip (key 30, figure 13) will not slide through the seat ring retainer and bushing
assembly (keys 3 and 26), proceed as follows:
a. Slide the seat ring retainer and bushing assembly (keys 3 and 26) over the adaptor (key 24, figure 11) so that the
bushing rests on the shoulder of the valve plug or valve plug guide.
b. Place the spiral wound gasket, shim, and bonnet gasket (keys 12, 25, and 10) on the shoulder of the seat ring
retainer.
c. Placeawrenchontheflatareasofthestemjustbelowthe threads for the actuator/stem c onnection to keep the
stem from turning.
d. Screw the adaptor (key 24, figure 11), which also includes the valve plug or valve plug guide and seat ring
retainer and bushing assembly and gaskets, onto the stem/bellows assembly (key 20, figure 11). Tighten the
adaptor until it is snug. Then, turn the adaptor until the valve stem hole lines up with the next adaptor pin hole.
Drive in a new pin (key 36) to lock the assembly.
e. Install the seat ring gasket (key 13), and replace the seat ring (key 9).
f. Install the seat ring retainer and bushing assembly, which also contains the valve plug/adaptor assembly or valve
plug guide/adaptor assembly, on the top of the seat ring, ensuring that the seat ring retainer slips onto the seat
ring properly. Any rotation orientation of the seat ring retainer with respect to the valve body is acceptable.
g. Place a new gasket (key 22, figure 11) over the stem and bellows assembly.
5. If the valve plug (key 2) or the valve plug tip (key 30, figure 13) will slide through the seat ring retainer and bushing
assembly (keys 3 and 26), proceed as follows:
a. Place a wrench on the flat areas of the stem just below the threads for the actuator/stem connection to keep the
stem from turning.
b. Screw the adaptor (key 24, figure 11), which also includes the valve plug or valve plug guide onto the
stem/bellows assembly (key 20, figure 11). Tighten the adaptor until it is snug. Then, turn the adaptor until the
valvestemholelinesupwiththenextadaptorpinhole.Driveinanewpin(key36)tolocktheassembly.
c. Install the seat ring gasket (key 13), and replace the seat ring (key 9).
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d. Install the seat ring retainer and bushing assembly on the top of the seat ring, ensuring that the seat ring retainer
slips onto the seat ring properly. Any rotation orientation of the seat ring retainer with respect to the valve body
is acceptable.
e. Place the spiral wound gasket, shim, and bonnet gasket (keys 12, 25, and 10) on the shoulder of the seat ring
retainer.
f. Slide the valve plug/adaptor assembly or the valve plug guide/adaptor assembly and the connected stem and
bellows assembly into the seat ring retainer and bushing assembly (keys 3 and 26).
g. Place a new gasket (key 22, figure 11) over the stem and bellows assembly.
6. Mount the bonnet on the valve body and complete the assembly according to steps 10 through 15 of the Replacing
Packingprocedure,omittingsteps12and13ifnewpackingisnotbeinginstalled,andbeingsuretoobservethe
note prior to step 11.
ENVIRO-SEAL Bellows Seal and Bonnet
Replacing a Plain or Extension Bonnet with an ENVIRO-SEAL Bellows Seal (Stem/Bellows
Assembly) and Bonnet
Instructions are provided for replacing a plain or extension bonnet with an ENVIRO-SEAL bellows seal bonnet when the
existing valve has a metal seat. If the valve has a composition seat, refer to figure 13 and to composition seat
information in the Valves with ENVIRO-SEAL Bellows Seal Bonnet procedure of the Trim Maintenance section.
1. Remove the actuator and bonnet according to steps 1 through 6 of the Replacing Packing procedure of the
Maintenance section.
Note
With some valve plug sizes and configurations, the valve plug will slide through the seat ring retainer and bushing assembly, and in
other configurations it won't. If the valve plug will not slide through the seat ring retainer and bushing assembly, then the valve
plug and stem assembly and the seat ring retainer and bushing assembly must be removed together.
2. Using care, remove the valve plug and stem assembly, and, if necessary, the seat ring retainer and bushing
assembly from the valve body.
3. Remove and discard the existing bonnet gasket (key 10, figure 12). Cover the valve body opening to protect sealing
surfaces and to prevent foreign material from entering the valve body cavity.
Note
The ENVIRO-SEAL stem/bellows assembly for easy-e valves is available only with a threaded and drilled plug/adaptor connection.
The existing valve plug can be reused with the new stem/bellows assembly or a new plug can be installed.
4. Inspect the existing valve plug. If the plug is in good condition, it can be reused with the new ENVIRO-SEAL
stem/bellows assembly. To remove the existing valve plug from the stem, first, place the existing plug stem
assembly in a soft-jaw chuck or other type of vise so that the jaws grip a portion of the valve plug that is not a
seating surface. Drive out or drill out the pin (key 8, figure 12).
When installing a valve plug on the ENVIRO-SEAL stem/bellows assembly, the valve stem must not be rotated. Damage to
the bellows may result.
Do not grip the bellows shroud or other parts of the stem/bellows assembly. Grip only the flat areas on the stem where it
extends out of the top of the bellows shroud.
Note
The ENVIRO-SEAL stem/bellows assembly has a one-piece stem.
Table 4. Recommended Torque for ENVIRO-SEAL Bellows Seal Packing Flange Nuts
VALVE SIZE, NPS
1/2 - 21/2222433
3-41544867
VALVE STEM DIAMETER
THROUGH PACKING
6. To attach the valve plug to the stem of the new ENVIRO-SEAL stem/bellows assembly, it is necessary to first attach
the valve plug to the adaptor (key 24, figure 11). Locate the adaptor. Notice that a hole has not been drilled in the
adaptor threads where the valve plug screws onto the adaptor.
MINIMUM TORQUEMAXIMUM TORQUE
NSmLbfSinNSmLbfSin
Secure the valve plug in a soft-jaw chuck or other type of vise. Do not grip the plug on any seating surface. Position the
plug in the chuck or vise for easy threading of the adaptor. Thread the adaptor into the valve plug and tighten to the
torque value given in figure 10.
Note
Valve plugs may not be pre-drilled. Follow the procedure in the following step.
7. If the valve plug is not pre-drilled, drill a hole according to figure 10. Otherwise, select the proper size of drill bit
(figure 10) and drill through the adaptor using the hole in the valve plug as a guide. Remove any metal chips or burrs
and drive in a new pin (key 8, figure 12) to lock the valve plug/adaptor assembly together.
Note
For some valve plug configurations, you must place the valve plug/adaptor assembly inside the seat ring retainer and bushing
assembly before attaching the adaptor to the stem extending from the bottom of the ENVIRO-SEAL stem/bellows assembly. If this
task is necessary, then place the spiral wound gasket, shim, and bonnet gasket (keys 12, 25, and 10, figure 12) on the shoulder of
the seat ring retainer. Check the existing seat ring retainer and bushing assembly for clearances. If necessary, use appropriate
procedures to support the seat ring retainer while screwing the valve plug/adaptor assembly onto the valve stem extending from
the ENVIRO-SEAL stem/bellows assembly.
8. Place a wrench on the flat areas of the valve stem just below the threads for the actuator/stem connection to keep
the stem from turning.
9. Screw the adaptor (key 24, figure 11), which also includes the valve plug or valve plug guide and may include the
seat ring retainer and bushing assembly and gaskets, onto the valve stem. Tighten the adaptor until it is
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finger-tight. Then, tighten the adaptor with a wrench until the valve stem hole lines up with the next adaptor pin
hole. Drive in a new pin (key 36, figure 11) to lock the assembly. Make certain the spiral wound gasket, shim, and
bonnet gasket (keys 12, 25, and 10, figure 12) are located on the shoulder of the seat ring retainer.
10. Inspect the seat ring. Replace, if necessary.
11. Install the new stem/bellows assembly with valve plug/adaptor by placing it into the valve body.
12. Place a new gasket (key 22, figure 11) over the stem/bellows assembly. Place the new ENVIRO-SEAL bonnet over
the stem/bellows assembly.
Note
Stud(s) and nut(s) should be installed such that the manufacturer's trademark and material grade marking is visible, allowing easy
comparison to the materials selected and documented in the Emerson/Fisher serial card provided with this product.
WARNING
Personal injury or damage to equipment could occur if improper stud and nut materials or parts are used. Do not operate or
assemble this product with stud(s) and nut(s) that are not approved by Emerson/Fisher engineering and/or listed on the
serial card provided with this product. Use of unapproved materials and parts could lead to stresses exceeding the design
or code limits intended for this particular service. Install studs with the material grade and manufacturer's identification
mark visible. Contact your Emerson Process Management representative immediately if a discrepancy between actual
parts and approved parts is suspected.
13. Properly lubricate the bonnet stud bolts. Install and tighten the bonnet hex nuts to the proper torque.
14. Install new packing and the metal packing box parts according to the appropriate arrangement in figure 14 or 15.
15. Install the packing flange. Properly lubricate the packing flange stud bolts and the faces of the packing flange nuts.
For graphite packing, tighten the packing flange nuts to the maximum recommended torque shown in table 4. Then,
loosen the packing flange nuts, and retighten them to the recommended minimumtorqueshownintable4.
For other packing types, tighten the packing flange nuts alternately in small equal increments until one of the nuts
reaches the minimum recommended torque shown in table 4. Then, tighten the remaining flange nuts until the
packing flange is level and at a 90-degree angle to the valve stem.
16. Install travel indicator parts, stem locknuts, and mount the actuator on the valve body according to the procedure
in the appropriate actuator instruction manual.
Replacing an Installed ENVIRO-SEAL Bellows Seal (Stem/Bellows Assembly)
Instructions are provided for replacing an ENVIRO-SEAL bellows seal (stem/bellows assembly) when the existing valve
has a metal seat. If the valve has a composition seat, refer to figure 13 and to composition seat information in the
Valves with ENVIRO-SEAL Bellows Seal Bonnet procedure of the Trim Maintenance section.
1. Remove the actuator and bonnet according to steps 1 through 5 of the Replacing Packing procedure of the
Maintenance section.
Note
With some valve plug sizes and configurations, the valve plug will slide through the seat ring retainer and bushing assembly, and in
other configurations it won't. If the valve plug will not slide through the seat ring retainer and bushing assembly, then the valve
plug and stem assembly and the seat ring retainer and bushing assembly must be removed together.
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2. Using care, remove the valve plug and stem assembly, and, if necessary, the seat ring retainer and bushing
assembly from the valve body. Remove and discard the existing bonnet gasket (key 10, figure 12) and gasket (key
22,figure11).Coverthevalvebodyopeningtoprotectsealing surfaces and to prevent foreign material from
entering the valve body cavity.
CAUTION
The ENVIRO-SEAL stem/bellows assembly for easy-e valves is available only with a threaded and pinned adaptor/stem
connection. The existing valve plug can be reused with the new stem/bellows assembly or a new plug can be installed. If
the existing valve plug is reused, and the adaptor is in good condition, it may be reused also. However, to avoid weakening
the adaptor that may cause failure in service, never reuse an old adaptor with a new valve plug. Using an old adaptor with a
new plug requires drilling a new pin hole in the adaptor, which will weaken the adaptor. However, a used valve plug may
be reused with a new adaptor.
3. Inspect the existing valve plug and adaptor. If they are in good condition, they can be reused with the new
stem/bellows assembly, and they do not need to be separated.
CAUTION
When removing/installing a valve plug on the ENVIRO-SEAL stem/bellows assembly, the valve stem must not be rotated.
Damage to the bellows may result.
Do not grip the bellows shroud or other parts of the stem/bellows assembly. Grip only the flat areas on the stem where it
extends out of the top of the bellows shroud.
Note
The ENVIRO-SEAL stem/bellows assembly has a one-piece stem.
4. If the existing valve plug and adaptor are not in good condition and must be replaced, first, place the existing
stem/bellows assembly and valve plug and adaptor assembly in a soft-jaw chuck or other type of vise so that the
jaws grip a portion of the valve plug that is not a seating surface. Drive out or drill out pin (key 8, figure 12). Drive
out pin (key 36, figure 11).
5. Useawrenchontheflatareasonthevalvestemjustbelowthethreadsfortheactuator/stemconnectionina
soft-jawchuckorvicetokeepthestemfromturning.Then,unscrewthevalveplugfromtheadaptorandthe
adaptor from the stem/bellows assembly.
6. To attach either the existing valve plug or a new one to the stem of the new ENVIRO-SEAL stem/bellows assembly, it
is necessary to first attach the valve plug to the adaptor (key 24, figure 11), if the valve plug was removed from the
adaptor. Locate the adaptor. Notice that a hole has not been drilled in the new adaptor threads where the valve plug
screws onto the adaptor.
If installing either a new valve plug and/or a new adaptor, secure the valve plug in a soft-jaw chuck or other type of vise.
Do not grip the plug on any seating surface. Position the plug in the chuck or vise for easy threading of the adaptor.
Thread the adaptor into the valve plug and tighten to the torque values given in figure 10.
7. Complete the installation by following steps 7 through 16 of the Replacing a Plain or Extension Bonnet with an
ENVIRO-SEAL Bellows Seal and Bonnet procedure provided in the previous section.
Purging the ENVIRO-SEAL Bellows Seal Bonnet
The ENVIRO-SEAL bellows seal bonnet has been designed so that it can be purged or leak tested. Refer to figure 11 for
an illustration of an ENVIRO-SEAL bellows seal bonnet, and perform the following steps for purging or leak testing.
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1. Remove the two diametrically opposed pipe plugs (key 16).
2. Connect a purging fluid to one of the pipe plug connections.
3. Install appropriate piping or tubing in the other pipe plug connection to pipe away the purging fluid or to make a
connection to an analyzer for leak testing.
4. When purging or leak testing has been completed, remove the piping or tubing and reinstall the pipe plugs (key
16).
Parts Ordering
Eachvalveisassignedaserialnumberwhichcanbefoundonthevalvebody.Thissamenumberalsoappearsonthe
actuatornameplatewhenthevalveisshippedfromthefactoryaspartofacontrolvalveassembly.Refertotheserial
number when contacting your Emerson Process Management sales office for technical assistance. When ordering
replacement parts, refer to the serial number and to the 11-character part number for each part required from the
following parts list.
Parts Kits
Gasketpartskitsareinkey10table.
Packing Kits (non-live-loaded)
Stem Diameter, mm (Inches)
Yoke Boss Diameter, mm (Inches)
PTFE (Contains keys 6, 8, 10, 11, and 12)RPACKX00012RPACKX00022RPACKX00032
Double PTFE (Contains k eys 6, 8, 11, and 12)RPACKX00042
PTFE/Composition (Contains keys 7, 8, 11, and 12)RPACKX00072RPACKX00082RPACKX00092
Use only genuine Fisher replacement parts. Components that are not supplied by Emerson Process Management 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.
24
Instruction Manual
D100401X012
EZ Valve
June 2014
Parts List
Bonnet
Note
Part numbers are shown for recommended spares only.For part
numbers not shown, contact your Emerson Process Management sales
office.
KeyDescriptionPart Number
1Bonnet/ENVIRO-SEAL bellows seal bonnet
If you need a bonnet or an ENVIRO-SEAL bellows seal
bonnet as a replacementpart, order by valve size and stem
diameter, serial number, and desired material.
2Baffle,(for extension bonnets only)
3Packing Flange, S31600 (316 SST)
3ENVIRO-SEAL Bellows Seal Packing Flange
4Packing Flange Stud, S31600 (2 req'd)
4ENVIRO-SEAL Bellows Seal Stud Bolt
5Packing Flange Nut, S31600 (2 req'd)
5ENVIRO-SEAL Bellows Seal Hex Nut
6* Packing Set, PTFE (2 req'd for double packing)
with 12.7 mm (1/2 inch) stem (4 req'd)14A0915X042
8Spring, S31600 (for singlePTFE packing only)
8Spacer, N04400 (for single PTFE packing only)
8Lantern Ring (for doublePTFE packing)
8ENVIRO-SEAL Bellows Seal Spring
8ENVIRO-SEAL Bellows Seal Spacer
10SpecialWasher, S31600 (for single PTFE packing)
11* PackingBox Ring
Single PTFE packing
9.5 mm (3/8-inch) stem
S31600 (std for S31600 and S41600 trims)1J873135072
N05500 (stdfor N05500 trim)1J873146222
12.7 mm (1/2-inch) stem
S31600 (std for S31600 and S41600 trims)1J873235072
N05500 (stdfor N05500 trim)1J873246222
19.1 mm (3/4-inch) stem
S31600 (std for S31600 and S41600 trims)1J873335072
N05500 (stdfor N05500 trim)1J873346222
Double PTFEpacking
9.5 mm (3/8-inch) stem
S31600 (std for S31600 and S41600 trims)1J873135072
Glass-filled PTFE (std forN05500 trim)17A6872X012
12.7 mm (1/2-inch) stem
S31600 (std for S31600 and S41600 trims)1J873235072
Glass-filled PTFE (std forN05500 trim)17A6873X012
Double PTFEpacking (cont'd)
19.1 mm (3/4-inch) stem
S31600 (std for S31600 and S41600 trims)1J873335072
Glass-filled PTFE (std forN05500 trim)17A6874X012
PTFE/composition packing
9.5 mm (3/8-inch) stem
S31600 (std for S31600 and S41600 trims)1J873135072
Glass-filled PTFE (std forN05500 trim)17A6872X012
12.7 mm (1/2-inch) stem
S31600 (std for S31600 and S41600 trims)1J873235072
N05500 (stdfor N05500 trim)1J873246222
19.1 mm (3/4-inch) stem
S31600 (std for S31600 and S41600 trims)1J873335072
Glass-filled PTFE (std forN05500 trim)17A6874X012
12* Upper Wiper, felt
9.5 mm (3/8-inch) stem1J872606332
12.7 mm (1/2-inch) stem1J872706332
19.1 mm (3/4-inch) stem1J872806332
12* ENVIRO-SEAL Bellows SealUpper Wiper
For9.5mm(3/8inch)andsize2with12.7mm
(1/2 inch)stem18A0868X012
For size3 & 4 with 12.7 mm (1/2 inch) stem18A0870X012
24ENVIRO-SEAL Bellows Seal Adaptor
27PipeNipple, for lub/isolating valve,steel
28ENVIRO-SEAL Bellows Seal Nameplate, Warning
29ENVIRO-SEAL Bellows Seal Drive Screw (2 req'd)
34Lubricant, anti-seize (not furnished with valve)
36* ENVIRO-SEAL Bellows SealPin12B3951X012
37ENVIRO-SEAL Bellows Seal Warning Tag
38ENVIRO-SEAL Bellows Seal Tie
19.1 mm (3/4-inch) stem12B6671X012
216Lantern Ring
217Spring Pack Assembly
218* Lower wiper
For ENVIRO-SEAL packing
PTFE
For PTFE packing
9.5 mm (3/8-inch) stem1J872106992
12.7 mm (1/2-inch) stem1J872206992
19.1 mm (3/4-inch) stem1J872306992
Valve Body
1ValveBody
If you need a valve body as a replacement part, order by
valve size, serial number, and desired material.
2* Valve PlugSee following table
3* Seat Ring Retainer (part numbers for the seat ring
retainer/bushing assy are provided in a following table)
NPS1/2,3/4,&1valve
CB7Cu-1 (17-4PH SST)25A6683X012
CF8M (316 SST)25A6683X022
M35-125A6683X052
NPS 1-1/2 valve
CB7Cu-125A6685X012
NPS 1-1/2 valve
CF8M25A6685X022
M35-125A6685X052
NPS 2 valve
CB7Cu-125A6687X012
CF8M25A6687X022
M35-125A6687X052
NPS 3 valve
CB7Cu-125A6689X012
CF8M25A6689X022
M35-125A6689X052
NPS 4 valve
CB7Cu-135A6691X012
CF8M35A6691X022
M35-135A6691X052
KeyDescriptionPart Number
7* StemSee following table
8* PinSee following table
9* Seat RingSee following table
10* Bonnet GasketSee following table
12* Spiral Wound GasketSee following table
13* Seat Ring GasketSee following table
15Cap Screw or Stud Bolt
16Nut
17Pipe Plug, for use in valve bodies with drain tapping only
18Flow Arrow, SST
19Drive Screw, SST (4 req'd)
25* ShimSee following table
26* BushingSee following table
(See additional table for part numbers of
assemblies that include both the seat ring
retainer and the bushing)
27* Valve Plug Guide (for composition seats
only)See following table
28* Disk Retainer, (composition seats only)
6.4 mm (0.25-inch) port diameter
S3160016A3441X012
N0550016A3441X042
S4160016A3441X052
9.5 mm (0.375-inch) port diameter
S3160016A5706X012
N0550016A5706X042
S4160016A5706X052
29* Disk, PTFE (composition seats only)
6.4 mm (0.25-inch) port diameter13A1226X062
9.5 mm (0.375-inch) port diameter13A5125X042
12.7 mm (0.5-inch) port diameter1P696806242
19.1 mm (0.75-inch) port diameter1P696106242
25.4 mm (1-inch) port diameter1P696906242
38.1 mm (1.5 inch) port diameter1U279606242
50.8 mm (2-inch) port diameter1U279906242
76.2 mm (3-inch) port diameter1F5653X0012
101.6 mm (4-inch) port diameter16A3462X012
30* Tip (composition seats only)See following table
31* Pin (composition seats only)
12.7 mm (0.5-inch) port diameter
S31600 and S416001B599038992
N055001B5990X0032
19.1 mm (0.75-inch) port diameter
S31600 and S416001P730438992
N055001P7304X0032
25.4 mm (1-inch) and 38.1 mm (1.5 inch)
port diameter
S31600 andS416001B599335072
N055001B5993X00B2
50.8 mm (2-inch) port diameter
S31600 and S416001B599538992
N055001B599540032
32Cap Screw (composition seat only)
33Nameplate, stainless steel
34Wire, lead
28
*Recommended spare parts
Instruction Manual
D100401X012
Figure 12. Fisher EZ Valve with Optional Drain Plug
EZ Valve
June 2014
16A1943- A
GASKET DETAIL
E0994
29
EZ Valve
June 2014
Figure 13. Composition Seats for Fisher EZ Valve
Instruction Manual
D100401X012
MICRO-FLUTE VALVE PLUG
6.4 mm (0.25 INCH) PORT DIAMETER
MICRO-FORM VALVE PLUG
12.7 mm THROUGH 25.4 mm (0.5 INCH THROUGH
1 INCH) PORT DIAMETER
6.4 AND 9.5 mm (0.25 AND 0.375 INCH) PORT DIAMETERS
MICRO-FORM VALVE PLUG
EQUAL PERCENTAGE VALVE PLUG
38.1 mm AND 50.8 mm (1.5 INCH AND 2 INCH)
PORT DIAMETER
30
EQUAL PERCENTAGE VALVE PL UG
76.2 mm AND 101.6 mm (3 INCH AND 4 INCH)
PORT DIAMETER
46A1842-B
GE70358-A
OVERTRAVEL (EZ-OVT) TRIM
VALVE PLUG
ALL SIZES
Instruction Manual
D100401X012
Figure 14. PTFE Packing Arrangements for ENVIRO-SEAL Bellows Seal Bonnets
THRUST RING
(KEY 39)
9.5 mm
(3/8 INCH)
STEM
A5885
SPRING
(KEY 8)
THRUST RING
(KEY 39)
FOR S31603 (316 SST)
PACKING BOX PARTS
12.7 mm
(1/2 INCH)
STEM, NPS 2
VALVES
9.5 mm
(3/8 INCH)
STEM
FOR ALL PACKING BOX
MATERIALS EXCEPT S31603
SINGLE ARRANGEMENTS
SPACER
(KEY 8)
12.7 mm
(1/2 INCH)
STEM, NPS2
VALVES
UPPER WIPER
(KEY 12)
BUSHING
(KEY 13)
FEMALE ADAPTOR
PACKING RING
MALE ADAPTOR
SPACER (KEY 8)
SPACER (KEY 8)
PACKING SET
(KEY 6)
EZ Valve
June 2014
9.5 mm
(3/8 INCH)
STEM
A5886-1
BUSHING
(KEY 13)
THRUST RING
(KEY 39)
12.7 mm
(1/2 INCH)
STEM, NPS 2
VALVES
BUSHING
(KEY 13)
SPACER
(KEY 8)
12.7 mm
(1/2 INCH)
STEM, NPS 3
AND 4 VALVES
DOUBLE ARRANGEMENTS
UPPER WIPER
(KEY 12)
BUSHING
(KEY 13)
FEMALE ADAPTOR
PACKING RINGPACKING SET
MALE ADAPTOR
SPACER (KEY 8)
(KEY 6)
31
EZ Valve
Instruction Manual
June 2014
Figure 15. Double Graphite Ribbon/Filament Arrangements for ENVIRO-SEAL Bellows Seal Bonnets
BUSHING (KEY13)
GRAPHITE FILAMENT
PACKING RING (KEY 7)
GRAPHITE RIBBON
PACKING RING (KEY 7)
SPACER (KEY8)
D100401X012
9.5 mm
(3/8 INCH)
A5887-1
Note:
0.102 mm (0.004 inch) thick sacrificial zinc washers:U se only one below each graphiteribbon ring.
1
STEM
12.7 mm
(1/2 INCH)
STEM, NPS 2
VALVES
Group 1 Actuators
(2-1/8, 2-13/16, & 3-9/16 Inch) Yoke Boss
472 & 473
585C & 585CR
1B
644 & 645
655
657 & 667--76 mm (3-inch) max travel
1008--except 90 mm (3-9/16 inch) yoke boss
with 51 mm (2-inch) travel
Neither Emerson, Emerson Process Management, nor any of their affiliated entities assumes responsibility for the selection,use or maintenance
of any product. Responsibilityfor proper selection, use, and maintenance of any productremains solely with the purchaser and end user.
Fisher, easy-e, and ENVIRO-SEAL 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, they arenot
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 termsand conditions,which are available upon request. We reserve the right to modifyor improve the designs or specifications of such
products at any time without notice.
Emerson Process Management
Marshalltown, Iowa 50158 USA
Sorocaba, 18087 Brazil
Chatham, Kent ME4 4QZ UK
Dubai, United Arab Emirates
Singapore 128461 Singapore
www.Fisher.com
40
E 1979, 2014 Fisher Controls International LLC.All rights reserved.
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