Emerson Fisher SS-264 User manual

www.Fisher.com
Fisher™SS-264 Rotary Control Ball Valve
Contents
Introduction 1.................................
Scope of Manual 1.............................
Description 2.................................
Specifications 2...............................
Educational Services 2.........................
Principle of Operation 3.........................
Installation 3
....................................
Lifting Guidelines 5............................
Maintenance 7
..................................
Packing Maintenance 8.........................
Replacing Packing 8........................
Packing Load Adjustment 11................
Replacing the Trim Parts 11.....................
Troubleshooting 18.............................
Actuator Mounting 18
............................
Actuator Mounting Instructions 24...............
Periodic FlowScanner™Testing 25..................
Parts Ordering 30................................
Parts List 30.....................................
Spare Parts 32.................................
Figure 1. Fisher SS-264 Valve with Bettis™
NG4020-SR3 Actuator and 3610J Positioner
09AA03200
Introduction
Scope of Manual
This instruction manual provides installation, operation, maintenance, and parts information for the Fisher SS-264
rotary control valve (see figure 1). It also outlines the assembly and testing procedures for the CL1725 SS-264 rotary
ball valve designed for use with the Bettis NG4020-SR3 rotary actuator.
The SS-264 valve is the passive residual heat removal valve for use in third generation PWR Nuclear Generating
Stations. The valve body has NPS 14 (AP1000, CAP1000) or NPS 16 (CAP1400) butt weld ends with a cammed ball
operating against a one-piece metal seal.
Features include the following:
D Cammed, segmented ball with hard faced seat band manufactured from forged bar.
D Fisher involute spline connection for ball/shaft and a keyed connection which is used for the Bettis actuator
connection.
D Tight tolerances and heavily loaded ball/seal interface.
Instruction Manual
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SS-264 Valve
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Instruction Manual
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Table 1. Specifications
Valve Sizes and End Connection Styles
SS-264: NPS 14 and NPS 16 valve with Schedule 160
butt weld ends
Standard Flow Direction
Forward (into the convex face of the ball)
Pressure Drop Limits(1,2)
Flowing: 120 psid
Shutoff: 53 psid
Max Temperature Limit(1)
426°C (800°F)
Maximum Ball Rotation
Standard: Ball rotates clockwise to close when viewed
from the top of the valve
Ball rotation is 90 degrees
Valve/Actuator Action
Clockwise to close on air stroke, counterclockwise to
open on spring stroke. See actuator manual for
details
Actuator Mounting
Counterclockwise to open
1. The pressure/temperature limits in this manual, and any applicable code or standard limitation, should not be exceeded.
2. Exceeding pressure drop limits will begin to yield the metal seat ring and can cause deformation which may lead to excessive leakage though the valve seat.
D Emerson Automation Solutions designed liveloaded packing with positive stop screws controlling Belleville spring
deflection.
D The zero positioning of the ball is achieved by torque seating.
Do not install, operate, or maintain an SS-264 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 SS-264 ball valve (figure 1) is used in throttling or on‐off service. The SS-264 valve is an NPS 14 (AP1000, CAP1000)
or NPS 16 (CAP1400) schedule 160 buttweld construction, per customer specified weld end configuration
requirements. The keyed valve shaft of this valve connects to a Bettis spring-return actuator.
Specifications
Specifications for these valves are shown in table 1.
Educational Services
For information on available courses contact:
Emerson Automation Solutions
Educational Services - Registration
Phone: [phone] or 1-800-338-8158
E-mail: [email protected]
emerson.com/fishervalvetraining

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Principle of Operation
The ball and machined body combine to create smooth transitioning flow geometry which enables efficient flow
through the valve. The drive shaft and follower shaft center the ball in the flow stream to minimize dynamic torque
and permit easy ball rotation.
The ball rotates counterclockwise out of the seal to a standard open rotation of 90 degrees. The ball is cammed into
the seal to create an effective seal. The drive linkage between the ball and shaft has been designed for minimal lost
motion using a “spline connection” on the shaft and ball.
Table 2. Recommended Bolting Torques
Description, Key Number Size Wrench Size N•m lbf•ft
Seat ring to Body - Sckt Hd Cap Screw, 28 1/2-13 3/8 Allen 92 68
Body to Bonnet - Hex Nut, 117 2 1/2-8 3 3/4 10970 8090
Bonnet to Actuator - Hex Hd Cap Screw, 3 3/4-10 1 1/4 271 200
Washer to Drive Shaft - Hex Hd Cap Screw, 31 5/8-11 15/16 163 120
Travel stop hex nut, 1 1/8-8 1 1/2 136 100
Go Switch/Positioner Mounting
Go Switch Bracket to Actuator - Hex Hd Cap Screw 1/2-13 3/4 92 68
Namur Disc to Actuator - Sckt Hd Cap Screw M6 4mm 10.2 90 in•b
Trip Arm Bracket to Namur Disc - Sckt Hd Cap Screw M6 5mm 10.2 90 in•lb
Target Magnet to Trip Arm Bracket - Hex Nut 7/16-20 11/16 47 35
Go Switch to Go Switch Bracket- Hex Nut 5/8-18 15/16 47 35
Standoff - Pan Hd Mach Phillip Screw 6-32 Phillips 1.9 17 in•b
Travel Ind. Scale - Pan Hd Mach Phillip Screw 6-32 Phillips 1.9 17 in•lb
Positioner - Sckt Hd Cap Screws 5/16-18 5/16 23 17
546/67CFSR Mounting
546 Bracket to Actuator - Hex Hd Cap Screw 1/2-13 3/4 92 68
546 to Bracket - Hex Hd Cap Screw 5/16-18 1/2 23 17
67CFSR to Bracket - Hex Hd Cap Screw 5/16-18 1/2 23 17
Solenoid/2625 Booster Mounting
2625 Bracket to Actuator - Hex Hd Cap Screw 1/2-13 3/4 92 68
2625 V-blocks to Bracket - Hex Hd Cap Screw 5/16-18 1/2 23 17
Solenoid to Bracket - Hex Hd Cap Screw 5/16-18 1/2 23 17
Installation
Key numbers in installation procedures are shown in figure 18 unless otherwise indicated.
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 either the valve body rating or the mating pipe flange joint rating. 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.

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WARNING
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. To avoid possible personal injury and because
some valve/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.
WARNING
The valve drive shaft is not necessarily grounded to the pipeline when installed. Personal injury or property damage could
result from an explosion caused by a discharge of static electricity from valve components if the process fluid or the
atmosphere around the valve is flammable. If the atmosphere around the valve or the process fluid is flammable,
electrically bond the drive shaft to the valve.
Note
Standard graphite packing is composed of all conductive graphite ribbon packing. Alternate shaft‐to‐valve body bonding is
available for hazardous service areas where the standard packing is not sufficient to bond the shaft to the valve.
1. If the valve is to be stored before installation, protect the buttweld ends and keep the valve body cavity dry and free
of foreign material.
2. The valve is normally shipped as part of a control valve assembly, with an actuator mounted on the valve. If the
valve and actuator have been purchased separately or if the actuator has been removed, mount the actuator
according to the Actuator Mounting section.
3. Standard flow direction is forward flow, spherical face of the ball is upstream.
4. Install the valve in a horizontal pipeline with the drive shaft in the vertical position.
5. The actuator is counterclockwise to open with the shaft in a vertical orientation as shown in figure 1. If necessary,
refer to the appropriate actuator instruction manual for actuator installation and adjustment procedures.
CAUTION
Ensure the valve and adjacent pipelines are free of foreign material that could damage the valve seating surfaces.
6. Be certain the valve and adjacent pipelines are free of any foreign material that could damage the valve sealing
surfaces.
7. Be sure the pipelines are in line with each other.
8. Use accepted pipeline piping and welding practices when installing the valve in the pipeline.
9. Connect pressure lines to the actuator.
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.
10. Verify that gap “A”, in figure 4, is closed before pressurizing the pipeline.

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Lifting Guidelines
X0397
X0420
Figure 2. Lifting Guidelines
X0398
X0399

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Figure 3. Lifting Guidelines (continued)
EYE BOLT
½-13UNC x 1.5
(NOT PROVIDED)
CAPSCREW
⅝-11UNC x 1.5
(NOT PROVIDED)
LIFTING PLATE
CG
3.4
CAUTION
Care must be taken when lifting the valve/actuator assembly to ensure the accessories and tubing are not damaged in the
process. The entire NPS 14 assembly with accessories weighs approximately 3656 kg (8060 lb) and the entire NPS 16
assembly with accessories weighs approximately 3597 kg (7930 lb). Make sure to use appropriate lifting
straps/eyebolts/hoists capable of lifting this weight.
Lifting Valve/Actuator Assembly
To lift the assembly, insert 1-1/4-7 UNC swivel hoist rings into the four lifting hole locations on the outside diameter of
the bonnet flange. The lifting point must be high enough away from the top of the accessory mountings to prevent
damage to accessories or piping. The hbeam illustrated in figure 2 is adjustable axially along the pipe run in order to
lift at the center of gravity (CG) of the assembly. Two adjustable length chains on one side of the valve body ensure the
assembly is lifted vertically. Refer to the appropriate drawing for the CG of your assembly.
Lifting Actuator Only
WARNING
Do NOT attempt to lift the actuator while attached to the bonnet or valve body as this will damage components and could
cause bodily harm.

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To lift the actuator, choke two straps, one around the spring barrel and one around the air cylinder, and connect to an
adjustable chain leveler. The chain leveler ensures the actuator and bonnet mating surfaces are parallel prior to
removal or installation. Proper alignment of the actuator and bonnet is critical to prevent binding of the shaft and
actuator. If accessories are not removed prior to lifting, use care to keep straps or chains away from piping and
accessories.
Alternatively, if the four actuator lifting lugs are accessible, chains can be used to lift the actuator. Similarly, the
actuator and bonnet mating surfaces must remain parallel.
Lifting Bonnet Only
To lift the bonnet, insert 1-1/4-7 UNC swivel hoist rings into the four lifting hole locations on the outside diameter of
the bonnet flange. Use proper length, or adjustable chains to ensure the bonnet and valve body mating surfaces
remain parallel when hoisted.
Lifting Valve Only
To lift the valve, insert two 2-1/2-8 swivel hoist rings, diametrically opposed and on opposite sides of the valve body
run, into the bodytobonnet bolt circle. An alternative to the swivel hoist rings is to use an internal thread lifting ring
which can be threaded onto the existing 2-1/2-8 studs (key 10).
Lifting Ball/Shaft Assembly
To lift the ball/shaft assembly, install the lifting plate (GE48210) and 5/811x1.50 cap screw (not provided) as shown in
figure 3. Align the lifting plate edge with the keyway groove of the shaft; this will position the lifting end of the plate
over the ball. Torque the cap screw to 163 N•m (120 ft•bf). Install a 1/2-13 eye bolt into the lifting end of the plate
and torque to 92 N•m (68 ft•lbf). Lift the ball/shaft assembly vertically out of the body, being careful not to damage
the sealing surface of the ball.
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.
The open and closed travel stops of the actuator do not require adjustment unless the bonnettobody joint is
loosened. If the actuator is removed for packing replacement, simply remount the actuator per the Actuator Mounting
section of this manual. If the bonnettobody joint is loosened for any reason, establish the zero position per the
Determining Closed Position section of this manual.
Key numbers in this procedure are shown in figure 18, unless otherwise noted.
WARNING
The ball closes with a shearing, cutting motion, which could result in personal injury. To avoid injury, keep hands, tools, and
other objects away from the ball while stroking the valve.
Avoid personal injury from sudden release of process pressure. Before performing any maintenance operations:
D Do not remove the actuator from the valve while the valve is still pressurized.
D 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.

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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 Always wear protective gloves, clothing, and eyewear when performing any maintenance operations.
D The valve packing area may contain process fluids that are pressurized. 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
Key numbers in this procedure are shown in figures 15 and 18 unless otherwise noted. A detailed view of the packing is
also shown in figure 4.
Refer to the Parts List section of this manual for individual parts.
If the packing is relatively new and tight on the drive shaft (key 8), and if tightening the packing nuts (key 16) does not
stop leakage, it is possible that the drive shaft is worn or nicked so that a seal cannot be made. If the leakage comes
from the outside diameter of the packing, it is possible that the leakage is caused by nicks or scratches on the packing
box wall. Inspect the drive shaft and packing box wall for nicks or scratches while performing the following procedure.
Replacing Packing
The open and closed travel stops of the actuator do not require adjustment unless the bonnettobody joint is
loosened. If the actuator is removed for packing replacement, simply remount the actuator per the Actuator Mounting
section of this manual.
Disassembly
WARNING
Observe the steps in the WARNING at the beginning of the Maintenance section.
1. Remove the actuator from the bonnet by removing the eight cap screws (key 18).
2. Remove the yoke key (key 103), coupler (key 102), and square key (key 15) from the drive shaft.
3. Loosen and remove packing nuts (key 16), packing flange (key 5), Belleville springs (key 6A), and the stop flange
(key 6C).
Note
Do not loosen or adjust the stop cap screws (keys 22 or 24) on the packing flange (key 5) or the stop flange (key 6C).
WARNING
Personal injury could result from packing leakage. Do not scratch the drive shaft or packing box wall while removing
packing parts in the following procedure.

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4. Use packing removal tools to pull the packing set (key 11) out of the bonnet (key 7).
5. Carefully clean the drive shaft (key 8) and packing box bore of the bonnet (key 5). Using a flashlight, look into the
packing box bore and ensure all packing and residue are cleaned out.
6. Properly dry out the packing box bore of the bonnet (key 7) before repacking the valve.
WARNING
When the actuator is removed from the valve, the ball/shaft assembly may suddenly rotate with a shearing or cutting
motion, which could result in personal injury. To avoid injury, carefully rotate the ball to a stable position after the actuator
is removed.
Packing Installation
1. Refer to figures 4 and 15 and install the following parts in the packing box bore by aligning each parts ID with the
OD of the drive shaft. First, insert the packing box ring (key 19), then one antiextrusion ring, two graphite ribbon
packing rings, and lastly the other antiextrusion ring.
2. Install the packing follower/bushing assembly (key 25).
Note
If the stop screws and nuts (keys 22, 23 and 24) were adjusted during disassembly, refer to the Packing Adjustment section in this
instruction manual before proceeding.
3. If the stop screws (key 22) were not adjusted during disassembly skip to step 5.
4. Apply Loctite 242 (key 77) to the two 3/824x1.50 hex cap screws (key 22). Install the cap screws with two 3/824
hex nuts (key 23) in the stop flange (key 6C). Final stop screw lock position will be set with gauged clearance to the
packing flange.
5. Install the stop flange (key 6C) assembly against the packing follower/bushing assembly (key 6B).
6. Install three Belleville springs (key 6A) on top of the stop flange (key 6C). Orient the Belleville stack as shown in
figure 3 (top spring with large OD against packing flange (key 5)).
7. If the stop screws (key 24) were not adjusted during disassembly skip to step 9.
8. Apply Loctite 242, (key 77) to two 3/824x2.50 stop cap screws (key 24). Install the two stop cap screws (key 24)
with 3/8-24 hex nuts (key 23) in the packing flange (key 5). Final stop screw lock position will be set with gauged
clearance to the stop flange
9. Install the packing flange assembly on top of the Belleville springs (key 6A).
10. Lubricate the two 3/410x5.75 continuous thread packing box studs (key 20) with Nuclear Grade anti-seize
lubricant (key 36) and install into the bonnet (key 7).
11. Lubricate the threads and seating surface of the two 3/410 hex nuts (key 16) with Nuclear Grade anti-seize
lubricant (key 36) and install onto the packing studs (key 20).
12. Tighten the packing nuts (key 16) without torque until they are snug against the packing flange (key 5).
Note
Use care to keep the packing flange parallel to the stop flange (key 16). Reference figure 4.

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13. If the stop screws (key 22 and 24) were not adjusted during disassembly, then check the Gap A and Gap B clearance
using the gap gage and adjust if necessary following Section Stop Screw Gap Settings steps 3 and 4; if adjustments
are not necessary, then proceed to Section Stop Screw Gap Settings step 5.
Figure 4. Positive Stop Packing Loading Method
GE51823
GAP GAGE
B
A