Fisher HPA, HP, HP series, HPA series Instruction Manual

Instruction Manual

D101634X012

Fisher™ HP and HPA Control Valves

HP and HPA Valves

July 2017

Contents

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

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

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

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

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

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

Maintenance 6.................................

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

Packing Maintenance 8.........................

Adding Packing Rings 8.....................

Replacing Packing 9........................

Trim Removal 14..............................

Valve Plug Maintenance 15.....................

Lapping Seats 17..............................

Trim Replacement 20..........................

Retrofit: Installing C‐seal Trim 24................

Replacement of Installed C‐seal Trim 26...........

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

Lapping Metal Seats (C‐seal Constructions) 27..

Remachining Metal Seats

(C‐seal Constructions) 27.................

Trim Replacement (C‐seal Constructions) 28...

Parts Ordering 30...............................

Parts Kits 30...................................

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

Figure 1. HP Valve with 667 Actuator and
FIELDVUE™ DVC6200 Digital Valve Controller

X0183-1

Introduction

Scope of Manual

This instruction manual includes installation, maintenance, and parts information for NPS 1 through 6 HP valves with
CL900 and CL1500 ratings; NPS 1 through 2 HP with CL2500 ratings; NPS 1 through 8 HPA valves with CL900 and
CL1500 ratings; and NPS 1 through 2 HPA valves with CL2500 ratings. Refer to separate manuals for instructions
covering the actuator, positioner, and accessories.

Do not install, operate, or maintain HP series valves 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
proceeding.

Unless otherwise noted, all NACE references are to NACE MR0175‐2002 and MR0103.

or Local Business Partner before

www.Fisher.com

HP and HPA Valves

July 2017

Table 1. Specifications

Instruction Manual

D101634X012

End Connection Styles and Ratings

(1,2,3,4)

Flanged: Consistent with CL900, CL1500, and CL2500
per ASME B16.34

Socket Welding: Consistent with CL900, CL1500, and
CL2500 per ASME B16.34

Buttwelding: Consistent with CL900, CL1500, and
CL2500 per ASME B16.34

Also see table 2

Standard Cage with Micro‐Flat Valve Plug: (HPAS
only): J Linear

Cavitrol

™ III, Whisper Trim™ III, or WhisperFlo™

Cage: J Linear
Special cages: Special characterized flow cages are

available. Consult your local Emerson sales office
Local Business Partner.

Flow Direction

Standard Cage

Shutoff Classifications

See table 3

C‐seal trim: High‐temperature, Class V.
See table 4

TSO (Tight Shutoff) trim: See tables 5 and 6

Flow Characteristic

Standard Cage: J Equal percentage, J Modified
equal percentage, or J Linear

Standard Cage with Micro‐Form Valve Plug: (HPS and

J HPD and HPAD: Normally flow down
J HPS and HPAS: Normally flow up
J HPAS Micro‐Flat: Flow down
J HPT and HPAT: Normally flow down
J HPS and HPAS Micro‐Form: Flow up only

Cavitrol III Cage: Flow down
Whisper Trim III or WhisperFlo Cage: Flow up

Approximate Weights (valve body and bonnet
assemblies)

See table 2

HPAS only): J Equal percentage or J Modified equal
percentage

Standard Cage with Micro‐Flute Valve Plug: (HPS and
HPAS only): J Equal percentage or J Modified equal

percentage

1. EN (or other) ratings and end connections can usually be supplied; consult your Emerson sales office.

2. CL900 and CL1500 globe valves are identical for NPS 1 and 2 valves. CL900 and CL1500 globe valves for NPS 3, 4, and 6 valves, however, are not identical.

3. The centerline‐to‐face dimension for CL2500 NPS 1 and 2 HPA valves does not conform to ANSI/ISA S75.12.

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

5. HPS and HPAS valves may be used flow down for on‐off service only or where further limited by trim design. HPAS valves may be used flow down for erosive service.

Additional Specifications

For specifications such as materials, valve plug
travels, and port, yoke boss, and stem diameters, see
the Parts List section

or

(5)

Description

HP Series high‐pressure globe and angle valves (figure 1) have metal seats, cage guiding, quick change trim, and
push‐down‐to‐close valve plug action. HPD, HPAD, HPT, and HPAT valves use balanced valve plugs. HPS and HPAS
valves use an unbalanced valve plug. To provide a seal between the cage and a balanced valve plug, the HPD and HPAD
valve plugs use piston rings; the HPT and HPAT valve plugs use a pressure‐assisted seal ring. A Whisper Trim or
WhisperFlo cage can be used with an HPD, HPAD, HPS, HPAS, HPT, or HPAT valve plug. A Cavitrol III cage can be used
with an HPS, HPAS, HPT, or HPAT valve plug.

C‐seal trim is available for HPD valves, CL900 and CL1500, in sizes NPS 3, 4, and 6; and for HPAD valves, CL900 and
CL1500 in sizes NPS 4, 6, and 8.

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.

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Instruction Manual

D101634X012

Specifications

Specifications for the HP Series valves are shown in table 1.

Table 2. Approximate Weights (Valve and Bonnet Assemblies)

VALVE SIZE,

NPS

1

1‐1/2 x 1 CL2500 ‐ ‐ ‐ 34 ‐ ‐ ‐ 76

2

3

4

6

1

2

3 CL1500 123 78 278 173

4 CL1500 181 117 399 258

6 CL1500 357 202 788 445

8 CL1500 648 405 1428 893

1. Only SWE is available for CL2500.

PRESSURE RATING

CL900 & CL1500 42 38 93 85

CL2500 45 34 100 76

CL900 & CL1500 72 52 158 115

CL2500 104 74 229 164

CL900 125 ‐ ‐ ‐ 276 ‐ ‐ ‐

CL1500 129 97 284 213

CL900 230 ‐ ‐ ‐ 507 ‐ ‐ ‐

CL1500 249 201 548 444

CL900 511 ‐ ‐ ‐ 1127 ‐ ‐ ‐

CL1500 557 455 1228 1003

CL900 & CL1500 40 36 88 80

CL2500 ‐ ‐ ‐ 72

CL900 & CL1500 69 50 153 110

CL2500 ‐ ‐ ‐ 109

KILOGRAMS POUNDS

Flg SWE & BWE Flg SWE & BWE

Globe Valves

Angle Valves

(1)

(1)

‐ ‐ ‐ 160

‐ ‐ ‐ 240

HP and HPA Valves

July 2017

(1)

(1)

Educational Services

For information on available courses for Fisher HP and HPA valves, as well as a variety of other products, contact:

Emerson Automation Solutions
Educational Services - Registration
Phone: [phone] or 1-800-338-8158
E-mail: [e-mail]
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 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

3

HP and HPA Valves

July 2017

Instruction Manual

D101634X012

damage, provide a relief valve for over‐pressure protection as required by government or accepted industry codes and
good engineering practices.

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.

WARNING

Some bonnet flanges have a tapped hole that was used to handle the bonnet during manufacture. Do not use this tapped
hole to lift the valve assembly or personal injury may result.

WARNING

When ordered, the valve configuration and construction materials were selected to meet particular pressure, temperature,
pressure drop, and controlled fluid conditions indicated when the valve was ordered. 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.

1. Before installing the valve, inspect it to ensure that the valve body cavity is free of foreign material.

2. Clean out all pipelines to remove scale, welding slag, and other foreign materials before installing the valve.

Note

If the valve body being installed has small internal flow passages, such as with Whisper Trim III, WhisperFlo, or Cavitrol III cages,
consideration should be given to 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.

3. Flow through the valve must be in the direction indicated by the flow arrow, which is stamped on or attached to the
valve body.

Table 3. Shutoff Classifications per ANSI/FCI 70‐2 and IEC 60534‐4

VALVE DESIGN PORT DIAMETER, mm (INCHES) LEAKAGE CLASS

47.6 (1.875) and smaller II

HPD, HPAD

HPS, HPAS w/ Cavitrol III, or

HPT, HPAT w/ Cavitrol III, or HPAS w/Micro‐Flat

HPS, HPAS, HPT, HPAT, HPS, HPAS w/ Micro‐Form,

or HPS, HPAS w/ Micro‐Flute

HPT w/ PEEK anti‐extrusion rings 47.6 (1.875) to 136.5 (5.375) V ‐ Standard

58.7 (2.3125) to 92.1 (3.625)

111.1 (4.375) and larger

All V

All

II ‐ Standard

III ‐ Optional
III ‐ Standard
IV ‐ Optional

IV‐Standard

V‐Optional

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D101634X012

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

Valve Design

HPD, HPAD

with optional

C‐seal trim

Valve Size, NPS Port Diameter

HPD HPAD mm Inches

Equal Percentage, Modified Equal Percentage,

3 4 73.0 2.875

4 6 73.0 2.875 Linear (Whisper III, D3) V

Equal Percentage, Modified Equal Percentage,

4 6 92.1 3.625

Linear (Whisper III, A1, B3, C3)

6 8 111.1 4.375 Linear (Whisper III, D3) V

Equal Percentage, Modified Equal Percentage,

6 8 136.5 5.375

Linear (Whisper III, A1, B3, C3)

Cage Style Leakage Class

Linear (std. cage),

Linear (Whisper III, A1, B1)

Linear (std. cage),

Linear (std. cage),

Table 5. TSO (Tight Shutoff) Leakage Class per ANSI/FCI 70‐2 and IEC 60534‐4

Leakage Class Maximum Leakage Test Medium Test Pressure Leakage Class

Valves with TSO trim are factory

TSO (Tight Shutoff)

tested to a more stringent Emerson

requirement of no leakage at time of

1. Specify service ΔP when ordering.

Automation Solutions test

shipment.

Water Service ΔP

(1)

July 2017

V

V

V

V

Table 6. TSO Shutoff Availability

VALVE DESIGN CONSTRUCTION LEAKAGE CLASS

HPS, HPT Std or Cavitrol III trim. Replaceable, protected soft seat TSO - Standard

Table 7. Recommended Torque for Packing Flange Nuts (Non Live‐loaded Graphite Packing)

STEM

DIAMETER

mm Inches Min Max Min Max

12.7 1/2 CL900 12 18 9 13

12.7 1/2 CL1500 15 22 11 16

12.7 1/2 CL2500 18 24 13 18

19.1 3/4 CL900 27 41 20 30

19.1 3/4 CL1500 34 50 25 37

19.1 3/4 CL2500 41 61 30 45

25.4 1 CL900 42 62 31 46

25.4 1 CL1500 52 77 38 57

25.4 1 CL2500 61 91 45 67

31.8 1‐1/4 CL900 56 83 41 61

31.8 1‐1/4 CL1500 68 102 50 75

1. For intermediate class ratings, use the same torque as the next lower standard class.

VALVE BODY

RATING(1)

NSm lbfSft

TORQUE

CAUTION

Depending on valve body materials used, post‐weld heat treating might be needed. Post‐weld heat treatment can damage
internal elastomeric, plastic, and metal parts. Shrink‐fit pieces and threaded connections might also loosen. In general, if
post‐weld heat treating is needed, remove all trim parts. Contact your Emerson sales office
additional information.

or Local Business Partner for

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HP and HPA Valves

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Instruction Manual

D101634X012

4. Use accepted piping and welding practices when installing the valve in the pipeline. For flanged valve bodies, use a
suitable gasket between the body and pipeline flanges.

5. Install a three‐valve bypass around the valve if continuous operation is required during maintenance.

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

7. If the valve body was shipped without packing installed in the packing box, install the packing before putting the
valve body into service. Refer to instructions given in the Packing Maintenance procedure.

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.

Valves with ENVIRO‐SEAL™ live‐loaded packing or HIGH‐SEAL ULF live‐loaded packing will not require this initial
re‐adjustment. See the instruction manuals titled ENVIRO‐SEAL Packing System for Sliding‐Stem Valves
(D101642X012
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.

) or HIGH‐SEAL ULF Live‐Loaded Packing System (D101453X012) (as appropriate) for packing

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, and trim maintenance. All maintenance operations may be performed with the valve in the line.

WARNING

Avoid personal injury or damage to property from sudden release of pressure or uncontrolled process fluid. Before starting
disassembly:

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 power actuator loading pressure and relieve any actuator spring precompression.
D Use lock‐out procedures to be sure that the above measures stay in effect while you work on the equipment.
D The valve packing box may contain process fluids that are pressurized, even when the valve has been removed from the

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

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

media.

Note

The HP series valve uses spiral‐wound gaskets which are crushed to provide their seal. A spiral‐wound gasket should never be
reused. Whenever a gasket seal is disturbed by removing or shifting gasketed parts, a new gasket must be installed upon
reassembly. This is necessary to ensure a good gasket seal, since the used gasket will not seal properly.

6

Instruction Manual

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HP and HPA Valves

July 2017

Table 8. Torque for Body‐to‐Bonnet Bolting Using Anti‐Seize Lubricant

VALVE

RATING

CL900 & CL1500

CL2500

1. For other materials, contact your Emerson sales office or Local Business Partner for torques.

VALVE SIZE,

NPS

HP HPA B7, B16, B8M CL2, BD, S20910, and 660 Studs B7, B16, B8M CL2, BD, S20910, and 660 Studs

1 1 260 190
2 2, 3 370 275
3 4 710 525
4 6 940 695
6 8 1650 1220
1 1 370 275
2 2 710 525

NSm lbfSft

(1)

TORQUE

CAUTION

The spiral‐wound gaskets are of special design. Failure to use Fisher replacement parts may result in valve damage.

Figure 2. Lubricator and Lubricator/Isolating Valve

31

LUBRICATOR

31

10A9421‐A
AJ5428‐D
A0832‐2

LUBRICATOR/ISOLATING VALVE

Note

If the valve has ENVIRO‐SEAL live‐loaded packing installed (figure 4), see the instruction manual entitled ENVIRO‐SEAL Packing
System for Sliding‐Stem Valves (D101642X012

) for packing instructions.

If the valve has HIGH‐SEAL ULF live‐loaded packing installed (figure 4), see the instruction manual entitledHIGH‐SEAL ULF
Live‐Loaded Packing System

(D101453X012) for packing instructions.

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HP and HPA Valves

July 2017

Instruction Manual

D101634X012

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

To avoid lubricants breaking down at elevated temperatures, do not lubricate packing used in processes with temperatures over
260_C (500_F).

WARNING

Do not lubricate parts when used in oxygen service, or where the lubrication is incompatible with the process media. Any
use of lubricant can lead to the sudden explosion of media due to the oil/oxygen mixture, causing personal injury or
property damage.

If a lubricator or lubricator/isolating valve (figure 2) is provided for PTFE/composition or other packings that require
lubrication, it will be installed in place of the pipe plug (key 31, figure 17, 18, or 19). 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, turn the cap screw clockwise to force the lubricant into the packing box. The
lubricator/isolating valve operates the same way except the isolating valve must first be opened and then closed after
lubrication is completed.

Packing Maintenance

If there is undesirable packing leakage in the spring‐loaded PTFE V‐ring packing shown in figure 3, tighten the packing
flange nuts (key 21, figure 17, 18, or 19) until the shoulder on the packing follower (key 28, figure 17, 18, or 19)
contacts the bonnet (key 18, figure 17, 18, or 19). If leakage continues, replace the packing by following the
numbered steps presented in the replacing packing procedure.

If there is undesirable packing leakage with other than spring‐loaded PTFE V‐ring packing, first try to limit the leakage
and establish a stem seal by tightening the packing flange nuts (key 21, figure 17, 18, or 19) to at least the minimum
recommended torque in table 7. However, do not exceed the maximum recommended torque in table 7 or excessive
friction may result. If leakage continues, replace the packing by following the numbered steps presented in the
Replacing Packing procedure.

If the packing is relatively new and tight on the valve plug stem, and if tightening the packing flange nuts does not stop
the leakage, it is possible that the stem is worn or nicked so that a seal cannot be made. The surface finish of a new
stem is critical for making a good packing seal. If the leakage comes from the outside diameter of the packing, it is
possible that the leakage is caused by nicks or scratches around the packing box wall. While replacing the packing
according to the Replacing Packing procedure, inspect the valve plug stem and packing box wall for nicks or scratches.

Adding Packing Rings

Key numbers referred to in this procedure are shown in figure 17, 18, or 19, unless otherwise indicated.

8

Instruction Manual

D101634X012

HP and HPA Valves

July 2017

When using packing with a lantern ring (key 24) it may be possible to add packing rings above the lantern ring as a
temporary measure without removing the actuator from the valve body.

1. Isolate the control valve from the line pressure, release pressure 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, release all pressure from the actuator. Use lock‐out procedures to be sure that the above measures stay in
effect while you work on the equipment.

2. Remove the packing flange nuts (key 21) and lift the packing flange, upper wiper, and packing follower (keys 19, 27,
and 28) away from the valve body.

3. It may be possible to dig out the old packing rings on top of the lantern ring, but use care to avoid scratching the
valve plug stem or packing box wall. Clean all metal parts to remove particles that would prevent the packing from
sealing.

4. Remove the stem connector and slip the packing rings over the end of the valve plug stem.

5. Reassemble the packing follower, upper wiper, packing flange, and packing flange nuts (keys 28, 27, 19, and 21).

6. Reconnect the body‐actuator stem connection according to the appropriate actuator instruction manual.

7. Tighten the packing flange nuts only far enough to stop leakage under operating conditions. Check for leakage
around the packing follower when the valve is being put into service. Retighten the packing flange nuts as required
(see table 7).

Replacing Packing

WARNING

Refer to the WARNING at the beginning of the Maintenance section in this instruction manual.

Key numbers referred to in this procedure are shown in figure 17, 18, or 19, unless otherwise indicated.

1. Isolate the control valve from the line pressure, release pressure 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, release all pressure from the actuator. Use lock‐out procedures to be sure that the above measures stay in
effect while you work on the equipment.

2. Remove the cap screws in the stem connector, and separate the two halves of the stem connector. Then exhaust all
actuator pressure, if any was applied, and disconnect the actuator supply and any leakoff piping.

3. Remove either the yoke locknut (key 32) or the hex nuts (key 30), and remove the actuator from the bonnet (key

18).

4. Loosen the packing flange nuts (key 21) so that the packing (keys 22, 23, 209, or 210, figure 3) is not tight on the
valve plug stem (key 6). Remove any travel indicator disk and stem locknuts from the valve plug stem threads.

CAUTION

When lifting the bonnet (key 18), be sure that the valve plug and stem assembly (keys 5 and 6) remains on the seat ring
(key 4). This avoids damage to the seating surfaces as a result of the assembly dropping from the bonnet after being lifted
part way out. The parts are also easier to handle separately.

Use care to avoid damaging gasket sealing surfaces.

The HPD and HPAD piston rings (key 8) are brittle and in two pieces. Avoid damaging the piston rings by dropping or rough
handling.

9

HP and HPA Valves

July 2017

Figure 3. Packing Arrangements

Instruction Manual

D101634X012

UPPER WIPER (KEY 27)

12A8160-A

PTFE V‐RING

SINGLE PACKING

UPPER WIPER (KEY 27)

PACKING FOLLOWER
(KEY 28)

FEMALE ADAPTOR
(KEY 35)

V-RING (KEY 23)
MALE ADAPTOR

(KEY 34)

LANTERN RING (KEY 24)

PACKING FOLLOWER
(KEY 28)

FEMALE ADAPTOR
(KEY 35)

V-RING (KEY 23)

MALE ADAPTOR
(KEY 34)

WASHER (KEY 25)

SPRING (KEY 24)

PACKING BOX RING
(KEY 26)

LOWER WIPER
(KEY 33)

KEY 22

}

1

KEY 22

}

1

14A3412-C

GRAPHITE RIBBON AND FILAMENT

SINGLE PACKING

PACKING FOLLOWER
(KEY 28)

GRAPHITE RIBBON
PACKING RING (KEY 23)

GRAPHITE FILAMENT
PACKING RING (KEY 23)

2

LANTERN RING
(KEY 24)

PACKING FOLLOWER
(KEY 28)

GRAPHITE RIBBON
PACKING RING (KEY 23)

GRAPHITE FILAMENT
PACKING RING (KEY 23)

2

LANTERN RING
(KEY 24)

PACKING BOX RING
(KEY 26)

UPPER WIPER
(KEY 27)

PACKING
FOLLOWER
(KEY 28)

PACKING RING
(KEY 23)

LANTERN RING
(KEY 24)

PACKING BOX RING
(KEY 26)

12A7839-A Sht 1

PTFE V‐RING

LOWER WIPER
(KEY 33)

DOUBLE PACKING

NOTES:

0.102 mm (0.004 INCH) THICK SACRIFICIAL ZINC WASHERS. USE ONLY ONE BELOW EACH GRAPHITE RIBBON RING.

1
2

HAS THE APPEARANCE OF A WOVEN OR BRAIDED RING.

C0747‐1

1

14A3414-C

GRAPHITE RIBBON AND FILAMENT

DOUBLE PACKING

PACKING BOX RING
(KEY 26)

12A8163-A

PTFE/COMPOSITION

DOUBLE PACKING

PACKING BOX RING
(KEY 26)

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 cage sticks to the bonnet, proceed carefully with bonnet removal and support the cage so that it will not fall
unexpectedly from the bonnet.

10

Instruction Manual

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Figure 4. Live‐Loaded Packing

HP and HPA Valves

July 2017

(KEY 214)

39B4153-A

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

Typical HIGH‐SEAL Graphite ULF

Packing System

SPRING

PACK

ASSEMBLY

(KEY 217)

GUIDE
BUSHING
(KEY 207)

PACKING

WASHERS

(KEY 214)

GUIDE
BUSHING
(KEY 208)

A6297-1

200

212

201

215

216

207

209
211

A6722

Typical ENVIRO‐SEAL Packing System

with PTFE Packing

213

217

207

207

214

207

Typical ENVIRO‐SEAL Packing System

with Graphite ULF Packing

Typical ENVIRO‐SEAL Packing System

with Duplex Packing

11