Emerson Fisher YD Manuel utilisateur

www.Fisher.com

Fisher™YD and YS 3‐Way Valves

Contents

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

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

Specifications 2...............................

Educational Services 2.........................

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

Maintenance 4.................................

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

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

Packing Replacement 6.....................

Trim Maintenance 7...........................

Disassembly 7.............................

Assembly 12..............................

ENVIRO‐SEALtBellows Seal Bonnet 16...........

Replacing a Plain or Extension Bonnet with an

ENVIRO‐SEAL Bellows Seal Bonnet

(Stem/Bellows Assembly) 16..............

Replacement of an Installed

ENVIRO‐SEAL Bellows Seal Bonnet

(Stem/Bellows Assembly) 18..............

Purging the ENVIRO‐SEAL

Bellows Seal Bonnet 19...................

Parts Ordering 24...............................

Parts Kits 24...................................

Gasket Kits 25.................................

Parts List 26...................................

YD and YS Valve 26............................

Bonnet for YD and YS 26........................

Figure 1. Fisher YD Valve with 667 Actuator

W2081

Introduction

Scope of Manual

This instruction manual includes installation, maintenance, and parts information for NPS 1/2 through 8 YD and NPS

1/2 through 6 YS control valves. Refer to separate manuals for instructions covering the actuators and accessories.

Do not install, operate, or maintain YD or YS 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 or Local Business Partner before

proceeding.

Instruction Manual

D100425X012

YD and YS Valves

July 2017

Instruction Manual

D100425X012

YD and YS Valves

July 2017

Table 1. Specifications

Valve Sizes, Ratings, and End Connections (1,2)

Cast Iron Valves

Flanged: NPS 1‐1/2 through 6 CL125 flat‐face or

CL250 raised‐face flanges per ASME B16.1

Screwed: NPS 1‐1/2 and 2 consistent with ASME B16.4

Steel and Stainless Steel Valves

Flanged: NPS 1 through 8 CL150, 300, and 600

raised‐face or ring‐type joint flanges per ASME B16.5

Screwed or Socket Welding: NPS 1/2 through 2

consistent with ASME B16.11

Buttwelding: NPS 1 through 8. All available

ASME B16.25 schedules that are consistent with

ASME B16.34

Also see table 2

Maximum Inlet Pressure(1)

Cast Iron Valves

Flanged: Consistent with CL125B or 250B per ASME

B16.1

Screwed: Consistent with CL250 per ASME B16.4

WCC and Stainless Steel Valves

Flanged: Consistent with CL150, 300, and 600(3) per

ASME B16.34

Screwed or Welding: Consistent with flanged CL600

per ASME B16.34

Do not exceed the pressure, temperature, and

pressure drop conditions specified when the valve

was ordered. See the Installation section for

additional information.

Shutoff Classifications per ANSI/FCI 70‐2

and IEC 60534‐4

Standard Design: Class IV

High‐Temperature Design: Class II

Standard Class: Class IV

Optional Class: Class V

Flow Characteristic

Linear

Approximate Shipping Weights

NPS 1/2, 3/4 Valves: 14 kg (30 pounds)

NPS 1 Valves: 18 kg (40 pounds)

NPS 1‐1/2 Valves: 27 kg (60 pounds)

NPS 2 Valves: 39 kg (85 pounds)

NPS 2‐1/2 Valves: 50 kg (110 pounds)

NPS 3 Valves: 68 kg (150 pounds)

NPS 4 Valves: 109 kg (240 pounds)

NPS 6 Valves: 227 kg (500 pounds)

NPS 8 Valves: 447 kg (985 pounds)

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

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

3. Certain bonnet bolting material selections may require a CL600 easy‐e valve assembly to be derated. Contact your Emerson sales office or Local Business Partner.

Description

The YD and YS valves are three‐way valves for throttling or on‐off (flow switching) service with converging (flow

mixing) or diverging (flow splitting) flow patterns. YS valves, when used in diverging service, are recommended for

on‐off applications only. These valves are generally shipped as part of a control valve assembly, having a diaphragm,

piston, or manual actuator mounted on them. A typical construction is shown in figure 1.

Specifications

Specifications for the YD and YS valves are shown in table 1. Some specifications appear on the actuator nameplate if

the valve is part of a complete control valve assembly.

Educational Services

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

Emerson Automation Solutions

Educational Services - Registration

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

E-mail: [email protected]

emerson.com/fishervalvetraining

Instruction Manual

D100425X012

YD and YS Valves

July 2017

Installation

WARNING

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

injury.

Personal injury or equipment damage caused by sudden release of pressure might 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.

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

media.

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

instruction manual.

CAUTION

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

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

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

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

contacting your Emerson sales office or Local Business Partner.

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

product damage.

1. Before installing the valve, inspect it for any shipping damage and for any foreign material in the valve body cavity.

2. Clean out all pipelines to remove pipe scale, chips, welding slag, and other foreign materials.

3. Use accepted piping and welding practices when installing the valve. For flanged valves, use suitable gaskets

between the valve and the pipeline flanges.

4. Do not install the valve in a system where the working pressures exceed those specified in the ASME

pressure/temperature ratings or those specified by Emerson Automation Solutions.

5. If continuous operation is required during maintenance and inspection, install a conventional three‐valve bypass

around the valve so that the valve can be isolated.

6. Orient the valve so that flow will be in the direction indicated by the flow arrows.

Note

The common port for the YD is the bottom port as shown on the flow direction plates (key 17) in figure 10. The common port for

the YS is the left‐hand port as shown on the flow direction plates in figure 9.

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. Threaded connections may also loosen. In general, if post weld

Instruction Manual

D100425X012

YD and YS Valves

July 2017

heat treating is to be performed, all trim parts should be removed. Contact your Emerson sales office or Local Business

Partner for additional information.

7. YD or YS control valves can be installed in any position, although the recommended position is with the actuator

vertical above the valve. For NPS 4 and 6 YS valves, size 80 or larger actuators mounted between 45 degrees above

and 45 degrees below horizontal should be supported. If forces other than normal gravitational forces are

experienced, such as vibrational forces, smaller size actuators might also need to be supported when they are not in

a vertical position. For further information, consult your Emerson sales office or Local Business Partner.

Table 2. Valve Body Sizes and End Connections

VALVES SIZE, NPS CAST IRON VALVES STEEL OR STAINLESS STEEL VALVES

1/2, 3/4 ‐ ‐ ‐ NPT screwed or socket weld

1‐ ‐ ‐ NPT screwed; CL150, 300, or 600 raised‐face or ring‐type

joint flanged; buttwelding; or socket weld

1‐1/2, 2 NPT screwed; CL125 flat‐face flanged; or CL250 raised‐face flanged NPT screwed; CL150, 300, or 600 raised‐face or ring‐type

joint flanged; buttwelding; or socket weld

2‐1/2, 3, 4, 6 CL125 flat‐face or CL250 raised‐face flanged CL150, 300, or 600 raised face or ring‐type joint flanged;

or buttwelding

8‐ ‐ ‐ CL150, 300, or 600 raised face, ring-type joint, or

buttwelding

WARNING

Personal injury could result from packing leakage. Valve packing was tightened before shipment; however, the packing

might require some readjustment to meet specific service conditions. Check with your process or safety engineer for any

additional measures that must be taken to protect against process media.

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

re‐adjustment. See the Fisher instruction manuals titled ENVIRO‐SEAL Packing System for Sliding‐Stem Valves or

HIGH‐SEAL 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 in the parts kit subsection near the end 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 trim maintenance,

packing maintenance, and ENVIRO‐SEAL bellows seal bonnet replacement. All maintenance operations may be

performed with the valve in the line.

WARNING

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

Instruction Manual

D100425X012

YD and YS Valves

July 2017

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 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.

CAUTION

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

Packing Lubrication

Figure 2. Lubricator and Lubricator/Isolating Valve (Optional)

LUBRICATOR LUBRICATOR/ISOLATING VALVE

10A9421‐A

AJ5428‐D

A0832‐2

Note

ENVIRO‐SEAL and HIGH‐SEAL packing do not require lubrication.

WARNING

To avoid personal injury or property damage resulting from fire or explosion, do not lubricate packing used in oxygen

service or in processes with temperatures over 260_C (500_F).

If a lubricator or lubricator/isolating valve (figure 2) is provided for PTFE/composition or other packings that require

lubrication, it will be installed in place of the pipe plug (key 14, figure 13). Use a good quality silicon‐base lubricant. Do

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

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

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

valve after lubrication is completed.

Instruction Manual

D100425X012

YD and YS Valves

July 2017

Packing Maintenance

Note

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

packing instructions.

For valves with HIGH‐SEAL packing, see the Fisher instruction manual HIGH‐SEAL Live‐Loaded Packing System for packing

instructions.

Packing Replacement

WARNING

Observe the warning at the start of the Maintenance section.

Table 3. Recommended Torque for Packing Flange Nuts

VALVE STEM

DIAMETER PRESSURE

RATING

GRAPHITE TYPE PACKING PTFE TYPE PACKING

Minimum Torque Maximum Torque Minimum Torque Maximum Torque

mm Inches NSm LbfSin NSm LbfSin NSm LbfSin NSm LbfSin

9.5 3/8

CL125,

150 3 27 5 40 1 13 2 19

CL250,

300 4 36 6 53 2 17 3 26

CL600 6 49 8 73 3 23 4 35

12.7 1/2

CL125,

150 5 44 8 66 2 21 4 31

CL250,

300 7 59 10 88 3 28 5 42

CL600 9 81 14 122 4 39 7 58

19.1 3/4

CL125,

150 11 99 17 149 5 47 8 70

CL250,

300 15 133 23 199 7 64 11 95

CL600 21 182 31 274 10 87 15 131

25.4 1 CL300 26 226 38 339 12 108 18 162

CL600 35 310 53 466 17 149 25 223

31.8 1‐1/4 CL300 36 318 54 477 17 152 26 228

CL600 49 437 74 655 24 209 36 314

The following procedure covers PTFE V‐ring packing. A similar procedure can be followed for PTFE/composition

packing. However, because PTFE/composition packing comes in split rings, it is possible to replace the rings without

removing the actuator from the valve.

Installation of graphite ribbon/filament packing requires special care to avoid trapping air between the rings. Start 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.

The arrangement of packing box parts is shown in figures 3, 4, 5, 6, and 7. Key numbers used in the following steps are

shown in figures 13 and 14.

Instruction Manual

D100425X012

YD and YS Valves

July 2017

1. Remove the actuator and bonnet according to steps 1 through 4 of the Disassembly procedure in the Maintenance

section on page 7.

2. With the stem and valve plug assembly removed from the bonnet, remove the packing nuts (key 5), packing flange

(key 3), wiper ring (key 12), and packing follower (key 13) from the bonnet. The old packing can then be pulled out

with a packing hook (take care to avoid scratching the packing box wall) or pushed out using a rod inserted through

the bottom of the bonnet.

3. Clean the packing box and all metal parts.

4. Complete maintenance necessary on other parts and install the bonnet on the valve as indicated in the Assembly

section (starting on page 12).

5. Install the new packing and associated parts in the sequence shown in figures 3, 4, 5, 6, and 7. Be careful not to

damage the packing during installation.

6. Replace the packing flange and packing flange nuts.

For spring‐loaded PTFE V‐ring packing, tighten the packing flange nuts until the shoulder on the packing follower

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 minimum torque shown in table 3.

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 nut 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 Packing Maintenance

section.

7. Mount the actuator on the bonnet and make up the stem connection according to the procedure given in the

appropriate actuator instruction manual.

Trim Maintenance

WARNING

Observe the warning at the start of the Maintenance section.

CAUTION

To avoid damaging parts, 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.

Key numbers in the following procedures are shown in figure 10 for standard YD, in figure 11 for high‐temperature YD,

and in figure 9 for YS, except where indicated.

Disassembly

1. Isolate the control valve from the line pressure, release pressure from both sides of the valve, and drain the process

media from both sides of the valve. Remove actuator supply pressure, and use lock‐out procedures to be sure that

the above measures stay in effect while you work on the equipment.

Instruction Manual

D100425X012

YD and YS Valves

July 2017

WARNING

See the WARNING at the beginning of the Maintenance section for more information.

2. Disconnect the actuator stem connector and remove the locknut (key 15, figure 13) that holds the actuator to the

valve. (Valves with a 127 mm (5‐inch) yoke boss use cap screws and nuts to secure the actuator on the valve). Then

lift the actuator from the valve.

Figure 3. Fisher PTFE V‐Ring Packing Arrangements

UPPER WIPER

(KEY 12)

PACKING

FOLLOWER (KEY 13)

LANTERN RING

(KEY 8)

PACKING BOX

RING (KEY 11)

MALE ADAPTOR

PACKING RING

FEMALE ADAPTOR

LOWER WIPER

ASSEMBLY 1

(POSITIVE

PRESSURES)

ASSEMBLY 2

(VACUUM) ASSEMBLY 3

(POSITIVE

PRESSURES

& VACUUM)

ASSEMBLY 1

(POSITIVE

PRESSURES)

ASSEMBLY 2

(VACUUM) ASSEMBLY 3

(POSITIVE

PRESSURES

& VACUUM)

ASSEMBLY 1

(POSITIVE

PRESSURES)

ASSEMBLY 2

(VACUUM) ASSEMBLY 3

(POSITIVE

PRESSURES

& VACUUM)

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

(3/4, 1, OR 1‐1/4 INCH) STEM

DOUBLE ARRANGEMENTS

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

B1428‐2

UPPER WIPER

(KEY 12)

PACKING

FOLLOWER (KEY 13)

PACKING BOX

RING (KEY 11)

FOR 316 OR 17‐4PH SST

METAL PACKING BOX PARTS

SINGLE ARRANGEMENT

12A7837-A

B1429-2

FOR ALL OTHER METAL PACKING

BOX PART MATERIALS

SPACER (KEY 8)

UPPER WIPER

(KEY 12)

PACKING

FOLLOWER

(KEY 13)

PACKING BOX

RING (KEY 11)

FEMALE

ADAPTOR

FEMALE

ADAPTOR

MALE

ADAPTOR

PACKING

RING MALE

ADAPTOR

PACKING

RING

WASHER

(KEY 10)

SPRING

(KEY 8)

PACKING

SET

(KEY 6)

LOWER

WIPER

LOWER

WIPER

Instruction Manual

D100425X012

YD and YS Valves

July 2017

Figure 4. Detail of Fisher PTFE/Composition Packing Arrangements

UPPER WIPER

(KEY 12)

PACKING

FOLLOWER (KEY 13)

LANTERN RING

(KEY 8)

PACKING BOX

RING (KEY 11)

PACKING RING

(KEY 7)

9.5 mm

(3/8 INCH)

STEM

12.7 mm

(1/2 INCH)

STEM

19.1, 25.4, OR 31.8 mm

(3/4, 1, OR 1‐1/4 INCH)

STEM

TYPICAL (DOUBLE) ARRANGEMENTS

12A8188‐A

12A7815‐A

12A8173‐A

A2619‐1

Figure 5. Fisher Graphite Ribbon/Filament Packing Arrangements

PACKING

FOLLOWER

PACKING BOX

RING

GRAPHITE

RIBBON

PACKING RING

GRAPHITE

FILAMENT

PACKING RING

14A1780-B

14A1849-B

14A2153-B

12.7 mm

(1/2‐INCH)

STEM

9.5 mm

(3/8‐INCH)

STEM

19.1 OR 25.4 mm

(3/4 OR 1‐INCH)

STEM

NOTE:

0.102 mm (0.004 INCH) THICK SACRIFICIAL ZINC WASHERS.

USE ONLY ONE BELOW EACH GRAPHITE RIBBON RING.

HAS THE APPEARANCE OF A WOVEN OR BRAIDED RING.

A2438‐2

LANTERN RING

PACKING

FOLLOWER

PACKING BOX

RING

GRAPHITE

RIBBON

PACKING RING

GRAPHITE

FILAMENT

PACKING RING

13A9776-B

13A9775-B

14A3411-A

12.7 mm

(1/2‐INCH)

STEM

9.5 mm

(3/8‐INCH)

STEM

19.1 OR 25.4 mm

(3/4 OR 1‐INCH)

STEM

SINGLE PACKING ARRANGEMENT DOUBLE PACKING ARRANGEMENT

LANTERN RING

Instruction Manual

D100425X012

YD and YS Valves

July 2017

Figure 6. PTFE Packing Arrangements for Use in Fisher ENVIRO‐SEAL Bellows Seal Bonnets

UPPER WIPER

(KEY 12)

PACKING SET: (KEY 6)

FEMALE ADAPTOR

PACKING RING

MALE ADAPTOR

BUSHING (KEY 13)

9.5 mm

(3/8 INCH)

STEM

12.7 mm

(1/2 INCH)

STEM

DOUBLE ARRANGEMENTS

9.5 mm

(3/8 INCH)

STEM

9.5 mm

(3/8 INCH)

STEM

12.7 mm

(1/2 INCH)

STEM FOR

NPS 2 VALVES

12.7 mm

(1/2 INCH)

STEM FOR

NPS 3 AND 4 VALVES

THRUST

RING

(KEY 39)

SPRING

(KEY 8)

THRUST

RING

(KEY 39)

THRUST

RING

(KEY 39)

BUSHING

(KEY 13)

BUSHING

(KEY 13)

SPACER

(KEY 8)

SPACER

(KEY 8)

SPACER

(KEY 8)

12.7 mm

(1/2 INCH)

STEM

SINGLE ARRANGEMENTS

FOR S31600 (316 SST)

PACKING BOX PARTS

FOR ALL PACKING BOX

MATERIALS EXCEPT S31600

UPPER WIPER

(KEY 12)

PACKING SET: (KEY 6)

FEMALE ADAPTOR

PACKING RING

MALE ADAPTOR

BUSHING (KEY 13)

SPACER

(KEY 8)

A5863

12B4183-A 18A0906-D 18A5338-A

12B4182-A SHT 1 12B4185-A SHT 1 12B4182-A SHT 2 12B4185-A SHT 2

3. Remove the nuts (key 16, figures 9 and 10) or cap screws from the bonnet flange.

4. Lift off the bonnet along with the valve plug and stem (keys 2 and 5, figures 9 and 10). Due to the design of the

valve, several other trim parts will be drawn out with the valve plug. They are as follows:

YD (Standard)‐‐The upper cage (key 3A) and associated seals, gaskets, and shim (keys 9, 11, 19, 20A, 20B, and 22).

YD (High Temperature)‐‐The upper cage (key 3B) and associated gaskets and shim (keys 9, 11, and 22).

YS‐‐The upper seat (key 7), upper cage (key 3), and associated gaskets and shim (keys 9, 11, and 22).

CAUTION

The exposed portion of the cage provides a guiding surface that must not be damaged during disassembly or maintenance.

Damage could affect valve performance. If the cage is stuck in the valve, use a rubber mallet to strike the exposed portion

at several points around the circumference.

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