Emerson Fisher V280 Manuale utente

www.Fisher.com

Fisher™V280 Full-Bore Ball Control Valve

Contents

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

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

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

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

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

Installation 4..................................

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

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

Stopping Leakage 6........................

Replacing Packing 6........................

Seal Ring Maintenance 9.......................

Disassembly 9.............................

Assembly 11..............................

Actuator Mounting 13...........................

Determining Closed Position 13.................

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

Parts List 16...................................

Figure 1. Fisher V280 Control Valve

X1611

Introduction

Scope of Manual

This instruction manual provides installation, operation, maintenance, and parts information for the Fisher V280

Full-Bore Ball control valve (see figure 1). Refer to separate manuals for information concerning the actuator,

positioner, and accessories.

Do not install, operate, or maintain a V280 valve without being fully trained and qualified in valve, actuator, and

accessory installation, operation, and maintenance. To avoid personal injury or property damage, it is important to

carefully read, understand, and follow all the contents of this manual, including all safety cautions and warnings. If you

have any questions about these instructions, contact your Emerson sales office before proceeding.

Description

The Fisher V280 is a three-piece, trunnion mounted, full-bore control valve designed with features for optimized

pressure, flow, and process control. The V280 comes standard as a single-seal construction with optional dual-seal

construction allowing for bidirectional flow and double block-and-bleed operation, with or without attenuation. Valve

constructions with attenuators combine the efficiency of a rotary valve with the noise reducing capability of a special

trim. Valve constructions without attenuators present little or no restriction to flow at full travel. The V280

construction meets ANSI/NACE MR0175/ISO 15156 as standard.

Instruction Manual

D104425X012

V280 Valve

August 2019

Instruction Manual

D104425X012

V280 Valve

August 2019

Specifications

Valve Sizes and End Connection Styles

NPS J6, J8, J10, J12, and J16 flanged valve

size with CL900 raised-face flanges compatible with

ASME B16.5. Consult your Emerson sales office for

other end connection styles

Maximum Inlet Pressure and Temperatures(1)

Consistent with CL900 pressure-temperature ratings

per ASME B16.34

Maximum Allowable Shutoff Pressure Drop(1)

For Single-Seal and Dual-Seal Construction (except

where further limited by pressure-temperature rating

of the valve body):

CL900: 153.2 bar (2220 psig) at 38°C (100°F)

Shutoff Classifications

Single or Dual-Seal Construction

Class IV standard: ANSI/FCI 70-2 and IEC 65034-4

Class VI optional: ANSI/FCI 70-2 and IEC 65034-4

Flow Characteristic

JModified linear with single high-density attenuator

JModified equal percentage with single

characterized attenuator

JModified equal percentage without attenuator

Flow and Shutoff Direction

Unidirectional flow is forward flow. Seal is upstream

Single Seal Construction: Should be used for

unidirectional flow and unidirectional shutoff only

Dual Seal Construction: V280 with Aerodome and

unattenuated V280 may be used for unidirectional

and bidirectional flow

V280 with Hydrodome should be used for

unidirectional flow only for effective anti-cavitation

protection. Bidirectional shutoff requires dual seal

construction

Flow Coefficients

See Fisher Catalog 12

Seal Material and Temperature Capabilities(1)

Standard: POM (polyoxymethylene) -29 to 82°C (-20

to 180°F)

Optional: POM (polyoxymethylene) with Nitrile MoS2

Impregnated O-rings -46 to 82°C (-50 to 180°F) or

PTFE/PEEK(2) with flurorocarbon O-rings -23 to 204°C

(-10 to 400°F)

Maximum Ball Rotation

90°

Actuator Mounting

Right-hand or left-hand mounted as viewed from the

valve inlet from forward flow

Packing Arrangements

PTFE Packing: Standard construction

ENVIRO-SEAL™Packing: This optional packing system

provides improved sealing, guiding, and transmission

of loading force to control liquid and gas emissions

Approximate Weights

See table 2

Options

JDouble block-and-bleed applications (Dual seal

construction is required)

JTwo or three-stage Aerodome attenuator,

two-stage or three-stage Hydrodome attenuator

JRing type joint flanges

JInconel drive shaft

JKeyed shaft

JNitrile MoS2Impregnated O-rings

JS31600 SST ENC ball

JPTFE/PEEK seal insert

JContact your Emerson sales office for other

options

1. The pressure or temperature limits in this bulletin and any applicable standard or code limitation for this valve should not be exceeded.

2. PTFE stands for Polytetrafluoroethylene and PEEK stands for PolyEtherEtherKetone.

Instruction Manual

D104425X012

V280 Valve

August 2019

Table 1. Standard Materials of Construction

Part Material

Valve Body LF2 Carbon Steel

Ball Carbon Steel ENC

Seal POM with S31600 SST Seal Blank

Drive Shaft S17400 SST H1150D

Dome Attenuator S17400 SST

Wave Spring N07750

Retaining Ring N07750

Tailpiece LF2 Carbon Steel

Tailpiece Mounting Bolting B7M Steel

Bearing Plate Carbon Steel

Bearings N04400 with PTFE

Thrust Washer Carbon filled PTFE

Packing Box Housing Carbon Steel

Packing PTFE/Carbon filled PTFE

Packing Bolting B7M Steel

Packing Follower, Packing Box Ring Annealed S31600 SST

Groove Pins S31600

O-Rings Nitrile

Actuator Mounting Bolting Steel Grade 5

Table 2. Face‐to‐Face Dimensions(1) and Approximate Weights

VALVE SIZE, NPS CLASS FACE‐TO‐FACE DIMENSION APPROXIMATE WEIGHT

mm Inches kg lbf

900

610 24.00 415 915

8 737 29.00 753 1660

10 838 33.00 1143 2520

12 965 38.00 1823 4020

16 1130 44.50 2885 6360

1. Dimensions per ASME B16.10-2017.

Educational Services

For information on available courses for Fisher V280 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

D104425X012

V280 Valve

August 2019

Installation

WARNING

D To avoid personal injury, always wear protective gloves, clothing, and eyewear when performing any installation

operations.

D To avoid personal injury or property damage resulting from the bursting of pressure retaining parts, be certain the

service conditions do not exceed the limits given in this manual.

D To avoid personal injury or property damage that can result from the sudden release of process pressure if valve or

mating pipe flange pressure ratings are exceeded, provide a relief valve for over‐pressure protection as required by

government or accepted industry codes and good engineering practices.

D Service conditions are limited for valve and trim material combinations. Do not apply any other service conditions to the

valve without first contacting your Emerson sales office.

D Personal injury could result from packing leakage. See the Packing Maintenance section for adjustment information.

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

media.

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

instruction manual.

D Use proper lifting and rigging practices while moving the valve or valve/actuator assembly.

Key number locations are shown in figure 4 unless otherwise noted. Throughout this manual, the component key

number will be identified for clarity.

1. Install a three‐valve bypass around the control valve assembly if continuous operation will be necessary during

inspection and maintenance of the valve.

2. The valve is normally shipped as part of a control valve assembly, with a factory adjusted actuator mounted on the

valve. If the valve or actuator has been purchased separately, or if the actuator has been removed, refer to the

Actuator Mounting section and the appropriate actuator instruction manual for installation and adjustment

procedures.

3. The standard valve construction allows uni-directional flow. If possible, install the valve in a horizontal pipeline with

the drive shaft (key 20) horizontal. The actuator can be right- or left-hand mounted in any of the positions shown in

the actuator instruction manual.

CAUTION

Be certain the valve and adjacent pipelines are free of any foreign material that could damage the valve sealing surfaces.

Impurities or entrained solids in the process fluid could plug the passages in the trim. If the process fluid is not clean, install

a filter upstream to keep the pipeline free of impurities or entrained solids.

4. Provide appropriate flange gaskets, and place the valve in the pipeline. Tighten flange bolting in a star pattern to

ensure the flange gaskets are compressed evenly.

Note

Standard Fisher V280 valve packings (key 105) are composed of:

D Conductive packing ring (graphite ribbon packing), or

Instruction Manual

D104425X012

V280 Valve

August 2019

D Partially conductive packing rings (for example: a carbon-filled PTFE female adaptor with PTFE V-ring packing or a

graphite-composition packing ring with a PTFE/composition packing ring).

To electrically bond the drive shaft to the valve body for hazardous area service, an alternate shaft-to-body bonding strap can be

provided by using the follow step (see figure 2).

5. For hazardous area applications where redundant shaft-to-body grounding is preferred, attach the optional

bonding strap assembly (key 117) to the valve drive shaft (key 20) with the clamp (key 116) and connect the other

end of the bonding strap assembly to the valve body with the mounting cap screw (key 25) as shown in figure 2.

Figure 2. Optional Shaft‐to‐Body Bonding Strap Assembly

GH02761

VALVE BODY

VIEW A-A

ACTUATOR

Maintenance

Valve parts are subject to normal wear and must be inspected and replaced as necessary. The frequency of inspection

and replacement depends upon the severity of service conditions.

WARNING

Avoid personal injury or equipment 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 Do not loosen any pressure retaining bolting while the valve is still pressurized. This includes the body-to-tailpiece nuts

(key 18), packing box housing nuts (key 21), packing nuts (key 101) or pipe plug (keys 26).

D Avoid injury by keeping hands, tools, and other objects away from the ball while stroking the valve.

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. Check that the

actuator cannot suddenly open or close the valve.

D Vent the power actuator loading pressure and relieve any actuator spring precompression.

D Use bypass valves or completely shut off the process to isolate the valve from process pressure, relieve any process

pressure from both sides of the valve body, and drain the process media from both sides of the valve.

Instruction Manual

D104425X012

V280 Valve

August 2019

D Dual‐seal constructions can retain pressure and process fluid even after process pressure has been removed from both

sides of the valve. The ball should be partially opened to relieve this pressure before disassembling or removing the

valve from the line. Take additional care if the process fluid is hot, flammable, caustic, or hazardous.

D A tip over hazard exists for the valve/actuator assembly. Ensure the valve/actuator assembly is properly secured and

always supported to prevent falling or rolling which may cause injury or property damage.

D Use lock-out/tag-out best practices and procedures to be sure that the above measures stay in effect while you work on

the equipment.

D The valve packing box housing 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.

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

media.

Packing Maintenance

Refer to figure 3 for details of the standard PTFE V-ring packing (left) and the ENVIRO-SEAL packing system (right). All

maintenance operations in this section may be performed on an unpressurized valve that is still installed inline.

Note

For additional information on the ENVIRO-SEAL packing system refer to the ENVIRO-SEAL Packing System Instruction Manual

(D101643X012).

Stopping Leakage

For standard PTFE V-ring packing, leakage around the packing follower may be stopped by tightening the packing

follower nuts. If the packing is relatively new and tight on the drive shaft, and if tightening the packing follower nuts

does not stop the leakage, the drive shaft may be worn or nicked so that a seal cannot be made. If the leakage comes

from the outside diameter of the packing, the leakage may be caused by nicks or scratches on the packing box housing

packing gland bore.

For ENVIRO-SEAL packing, optimal performance is obtained when the Belleville springs are compressed to the required

target load. The target load is the point where the springs are compressed to 85% of their maximum deflection.

Under normal conditions, the packing nuts should not require re‐tightening. However, when servicing, if the springs

do not remain at the target load of 85% compression, retighten the packing nuts (key 101) per the following:

1. Tighten the packing flange nuts (key 101) alternately and evenly, keeping the packing flange parallel with the valve

flange (see figure 3), until the Belleville springs are compressed 100% (or completely flat).

a. For PTFE packing, loosen each packing flange nut one half turn (180°of rotation).

2. The target load of 85% compression has now been reached. If leakage continues, replace the packing components

and inspect the packing box housing, packing gland bore, and valve drive shaft for damage as described in the

following procedures.

Replacing Packing

Replacing the packing requires bleeding off the system and removing the actuator from the valve. Valve/actuator

adjustments cannot be made correctly without observing the fully open or closed position of the valve ball (key 3). It is

not necessary to remove the valve from the pipeline to make adjustments if care is taken to note the position and

alignment of the actuator lever and valve shaft and to not disturb the actuator turnbuckle position.

Instruction Manual

D104425X012

V280 Valve

August 2019

Refer to figure 3 which identifies the V280 packing components by key number (also see the Parts List section of this

manual).

Figure 3. Packing Arrangement Details

STANDARD

PACKING ARRANGEMENT

ENVIRO-SEAL

PACKING ARRANGEMENT

DRIVE SHAFT

(KEY 20)

PACKING FLANGE

(KEY 102)

PACKING

FOLLOWER

(KEY 114)

TYPICAL PTFE

V-RING PACKING

SET (KEY 105)

PACKING BOX

RING (KEY 107)

PACKING STUD

AND NUT

(KEYS 100 AND 101)

TYPICAL

ENVIRO-SEAL

PTFE V-RING

PACKING SET

94BA02200-D

B2472-1

Packing Disassembly

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, shut off all pressure lines (or other power

source) to the power actuator, release pressure from the actuator, and disconnect the pressure lines from the

actuator. Use lockout/tagout procedures to be sure that the above measures stay in effect while disassembling the

equipment.

WARNING

D See the WARNING at the beginning of the Maintenance section for more information before removing the valve from

the pipeline.

D Use proper lifting and rigging practices while moving the valve or valve/actuator assembly.

2. Remove line bolting, remove the control valve from the pipeline, and place the actuator/valve assembly on a flat

surface.

3. To assist with future reassembly, note and mark the orientation of the actuator with respect to the valve body and

the actuator lever orientation with respect to the valve drive shaft.

4. Refer to the appropriate actuator instruction manual for information on removal.

CAUTION

When removing the actuator from the valve, do not use a hammer or similar tool to drive the lever or actuator off the valve

drive shaft (key 20). Driving the lever or actuator off the valve drive shaft could damage the ball, seals, and valve.

Instruction Manual

D104425X012

V280 Valve

August 2019

If necessary, use a wheel puller to remove the lever or actuator from the valve drive shaft. Tap the wheel puller screw

lightly to loosen the lever or actuator. Do not hit the screw with excessive force. Using excessive force could damage the

ball, seal, and valve.

5. Loosen the actuator lever locking device cap screw. Loosening the lever turnbuckle adjustment is not necessary

during disassembly. When remounting the actuator, the turnbuckle will be used for actuator adjustments.

6. Remove the actuator mounting screws, bolts, or nuts while properly supporting the actuator and separate the

actuator and mounting bracket from the valve.

7. Slide the lever along the valve drive shaft (key 20) while removing the actuator from the valve.

8. If necessary, remove the bonding strap assembly, shown in figure 2 from the valve before removing the packing

parts.

9. Remove the packing follower nuts, packing flange, spring pack (only applicable to ENVIRO-SEAL), and packing

follower (keys 101, 102, and 114).

10. Remove the packing parts:

a. If the packing box housing (key 6) is mounted on the valve: Use a formed wire hook with a sharp end to pierce

the packing rings, and pull the rings out of the packing box housing. Do not scratch the drive shaft or packing

gland bore. Scratching these surfaces could cause leakage. Clean, inspect, and obtain replacement parts as

necessary for reassembly. Examine the drive shaft and packing gland bore for any signs of damage that may

prevent proper sealing.

b. If the packing box housing is separated from the valve (refer to Seal Ring Maintenance section of this manual for

disassembly instructions): Remove the drive shaft (key 20) from the packing box housing. With the drive shaft

removed, remove all internal packing parts. Clean, inspect, and obtain replacement parts as necessary for

reassembly. Examine the drive shaft and packing gland bore for any signs of damage that may prevent proper

sealing.

Note

Verify that the grounding ball is installed in the drive shaft-to-ball tang interface to guarantee electrical continuity between ball

trim and valve drive shaft.

The packing sets (key 105) listed in the parts list do not include any metal parts. Either clean and reuse metal packing

parts or obtain replacements by ordering them individually.

Packing Assembly

For additional information on the ENVIRO-SEAL packing system refer to the ENVIRO-SEAL Packing System Instruction

Manual (D101643X012).

If the packing housing box (key 6) is removed from the valve, use the valve assembly steps to reinstall the drive shaft

(key 4) and packing box housing assembly on the valve. (Refer to Seal Ring Maintenance section of this manual for

additional assembly instructions).

1. Place the new packing components over the valve drive shaft (key 20) and slide each into the packing box housing

until properly seated at the bottom of the packing gland bore. Use the parts sequence shown in figure 3 and verify

the correct configuration.

2. For standard packing arrangements, secure the packing follower and packing flange with packing nuts (keys 114,

102, and 101). Tighten the packing flange nuts alternately and evenly until leakage has stopped during operating

Instruction Manual

D104425X012

V280 Valve

August 2019

conditions (only applicable to standard packing), keeping the packing flange parallel with the valve flange (see

figure 3).

3. If necessary, install the bonding strap assembly (keys 116 and 117) shown in figure 2.

4. Use the steps provided in the Actuator Mounting section to install the actuator on the valve. For actuator travel

adjustments, refer to the appropriate actuator instruction manual.

5. When the control valve is in operation, carefully examine the packing follower region for any signs of leakage.

Seal Ring Maintenance

WARNING

D See the WARNING at the beginning of the Maintenance section for more information before removing the valve from

the pipeline.

D Use proper lifting and rigging practices while moving the valve or valve/actuator assembly.

Valve Disassembly

Refer to figure 4 to identify the V280 valve components by key number.

Disassemble the valve only to the extent necessary to accomplish the needed inspection and repairs. For some repairs

complete disassembly of the valve is not necessary. Follow the disassembly procedures to the point necessary to

accomplish the repair, then skip to the appropriate assembly steps to complete the reassembly of the valve. Always

clean and protect sealing surfaces from damage.

Note

It is not necessary to remove the base bracket for maintenance.

Mark parts as necessary to allow them to be returned to the same position and orientation as removed. The tailpiece,

for instance, shall be returned to the same end of the valve from which it was removed. The seal assembly shall also be

returned to the same tailpiece and in the same orientation from which it was removed.

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, shut off all pressure lines to the power

actuator, release pressure from the actuator, and disconnect the pressure lines from the actuator. Use

lockout/tagout procedures to be sure that the above measures stay in effect while working on the equipment.

2. Remove line bolting, remove the control valve from the pipeline, and clean all valve surfaces. Place the

actuator/valve assembly on a flat working surface.

3. Mark parts as necessary to allow them to be returned to the same position during reassembly.

4. Refer to the appropriate actuator instruction manual for information on removal. Loosen the actuator mounting

screws, bolts, or nuts while properly supporting the actuator then separate the actuator and mounting bracket

from the valve. When valve maintenance is complete, refer to the Mounting Actuator procedure in this manual to

reinstall the actuator on the valve.

Instruction Manual

D104425X012

V280 Valve

August 2019

5. Provide a clean soft working surface to protect the tailpiece‐flange serrated surface. Lift the valve and place it on

either tailpiece flange face. Be sure the valve is in a stable, upright position before releasing the hoist connection.

Note

If the packing (key 105) is in good condition, it is possible to remove and replace the seal assembly (key 5) without removing the

packing box housing assembly. However, the packing box housing assembly must be removed to remove the ball (key 3) from the

valve body.

6. Remove the packing box housing nuts (key 21).

7. Remove the packing box housing assembly from the valve. The assembly includes the drive shaft (key 20), O-ring

and back-up ring (keys 13 and 16), shaft bearing (key 7), shaft thrust washer (key 11), and all packing parts.

Note

Verify that the grounding ball is installed in the drive shaft-to-ball tang interface to guarantee electrical continuity between ball

(key 3) and valve drive shaft (key 20).

8. If it is desired to separate the packing box assembly parts, loosen or remove the packing components and slide the

shaft down and out the valve side of the packing box housing. Inspect the drive shaft bushing (key 7) and the thrust

washer (key 11). If necessary, replace worn components.

9. Remove the valve body nuts (key 18) from the studs (key 4) on the upper tailpiece and remove the tailpiece (key 2)

from the valve body (key 1).

CAUTION

While lifting the tailpiece (key 2) with seal (key 5) from the valve body (key 1), check to see if the seal (key 5) is lifting with

the tailpiece. If so, use caution in case the seal falls out and protect the ball and the body sealing surfaces. An additional

strap can be employed to ensure the seal is captured in the event it disengages from the tailpiece.

If the valve assembly is resting on the base bracket during disassembly, secure the valve when removing the tailpieces from

the body to prevent tipping.

10. Turn the tailpiece assembly over so the seal is facing up and place it on a clean soft surface to protect the flange

serrated surface.

11. Remove the seal (key 5) from the tailpiece by using the 1/4-20 UNC jack bolt tappings on the seal flange. This will

aid with disengaging the O-ring from the tailpiece seal gland. Be sure to not use any tools that could cause damage

to the sealing surface. Note the configuration of the seal O-ring (key 14) and back-up ring (key 15) and the wave

spring (key 17). Ensure the bearing plate (key 8) dowel pins (key 23) are accounted for.

12. If the tailpiece has an attenuator dome (key 24), place a flat head screw driver in the removal notch on the retaining

ring (key 28) and pry the retaining ring out of the groove. Once the removal notch end of the retaining ring is out of

the groove, pull up on the removal notch end to unseat the retaining ring from the groove. Be sure not to scratch

the O-ring sealing surface while performing this operation. Clean and protect all sealing surfaces.

WARNING

When lifting the ball, ensure the bearing plates (key 8) are secure on the ball trunnions to prevent parts from falling which

may cause personal injury or property damage.

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