SVF FS7 Series Owner's manual

© SVF Flow Controls, Inc. • 13560 Larwin Circle • Santa Fe Springs, CA 90670 • Tel: [phone] • FAX: [phone]
[e-mail] • [e-mail] • Visit our website: www.SVF.net • Specicaons subject to change without noce
www .SVF. net
Please visit www.SVF.net for the latest updates on this document. All data posted on our website supersedes all prior publicaons • [Document # SVF_FS7_IOM • 10/21/2013]
INSTALLATION, OPERATION & MAINTENANCE FOR SVFSERIES FS7 BALL VALVES
FS7 Series Ball Valves
I N C O R P O R A T E D
SVFFlow Controls
IOM-FS7
UALITY FLOWS
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GENERAL
SVF Ball valves have been designed and engineered
to provide long lasting and trouble free service
when used in accordance with the instructions and
specications herein.
The following instructions refer only to SVF Series FS7
Fire Safe Ball Valves.
Keep protective cover in place until moment of
installation. Valve performance depends upon
preventing of damage to ball surface. Upon removal
of cover, make sure that the valve is completely open
and free of obstruction.
If requested, valves can be shipped from the factory
containing a silicon based lubricant which aids in the
assembly of the valve. This may be removed with a
solvent if found intolerable.
Certain ferrous valves are phosphate and oil dipped
during the course of manufacture, but they are
completely non-toxic and the valves are quite safe
to use for edible or potable products.
STORAGE:
All manual valves are shipped in the fully open position
with protective end caps (covers). Keep all protective
packaging, flange covers, or end caps attached
to the valves during storage. To avoid damage to
the seat due to contact with the balls edge, leave
the valve in the fully open or closed position during
storage. It is recommended to keep the valves in a
clean and dry environment until ready for use.
!!!CAUTION! Safety Precautions!!!
Before removing valve from pipeline NOTE that:
Media flowing through a valve may be corrosive,
toxic, flammable, a contaminant or harmful in
nature. Where there is evidence of harmful fluids
having owed through the valve, the utmost care
must be taken. It is suggested that the following
minimal safety precautions be taken when
handling valves:
1. Always wear eye shields.
2. Always wear gloves and overalls.
3. Wear protective footwear.
4. Wear protective headgear.
5. Ensure that running water is readily accessible.
6. Have a suitable fire extinguisher ready if
media is ammable.
7. Be sure that you are aware of the fluid that has
been passing through the valve before opening
or dismantling any valve. Require MSDS
information.
By checking line gauges ensure that no pressure
is present at the valve.
Ensure that any media is released by operating
valve slowly to half open position. Ideally, the valve
should be decontaminated when the ball is in the
half open position.
These valves, when installed, have body connectors
which form an integral part of the pipeline and
the valve cannot be removed from the pipeline
without being dismantled.
Valves and accessories must not be used as a
sole support of piping or human weight. Safety
accessories such as safety relief (overpressure)
valves are the responsibility of the system designer.
It is the user/system designer’s responsibility to use
insulation in high temperature applications. Refer
to OSHA documents for more details.

© SVF Flow Controls, Inc. • 13560 Larwin Circle • Santa Fe Springs, CA 90670 • Tel: [phone] • FAX: [phone]
[e-mail] • [e-mail] • Visit our website: www.SVF.net • Specicaons subject to change without noce
www .SVF. net
Please visit www.SVF.net for the latest updates on this document. All data posted on our website supersedes all prior publicaons • [Document # SVF_FS7_IOM • 10/21/2013]
INSTALLATION, OPERATION & MAINTENANCE FOR SVFSERIES FS7 BALL VALVES
FS7 Series Ball Valves
I N C O R P O R A T E D
SVFFlow Controls
IOM-FS7
INSTALLATION
The valve may be installed for ow or vacuum in either
direction. Carefully exclude pipe sealants from the
valve cavity. When installing, use standard gaskets
suitable for the specific service. Tighten flange bolts
or studs evenly.
OPERATION
SVF valves provide tight shut off when used under
normal conditions and in accordance with SVF’s
published pressure/temperature chart. If these valves
are used in a partially open (throttled) position seat life
may be reduced.
SVF valves have ¼ turn operation closing in a clockwise
direction. It is possible to see when the valve is open
or closed by the position of the wrench handle. When
the wrench is in line with the pipeline, the valve is open.
Any media which might solidify, crystallize or polymerize
should not be allowed to stand in the ball valve cavities
unless regular maintenance is provided. If minimal
maintenance is required, SVF offers steam jacketed
ball valves.
TORQUE REQUIREMENTS
Torque ratings are subject to variations depending on
the length of time between cycles and the media in
the system.
Breakaway torque is that force which must be exerted
to cause the ball to begin to open. Operating torque
requirements will vary depending on the length of time
between cycles, media in the system, line pressure
and type of valve seat.
MAINTENANCE
With self-wiping ball/seats, SVF valves have a long,
trouble free life, and maintenance is seldom required.
But, when necessary, valves may be refurbished, using
a small number of components, none of which require
machining.
SVF valves are designed for easy service and
assembly in the eld. The following checks will help
to extend valve life, or reduce plant problems.
SVF ball valves utilize live-loaded stem seals featuring
Belleville washers (disk springs) that maintain constant
pressure on the Stem Seal area even under a wide
range of pressure and temperature fluctuations. If
stem leakage is evident proceed as follows:
STEM LEAKAGE
Examine the disk springs (Belleville washers) for
damage. If in good condition tighten the gland nut
until disk springs are firmly compressed, then back
nut off 1/16th of a turn. If damaged, dismantle the
stem down to the gland, fit new disk springs with
their outer edges touching, replace and retighten
using gland nut. Further maintenance necessitates
dismantling of the valve.
LEAKAGE AT BODY JOINT
Check for tightness at the body connector bolts.
If loose, tighten body bolts. Excessive force will
damage the bolts. (See Table A below)
If there is still leakage it will be necessary to dismantle
the valve and replace the body seals.
IN-LINE LEAKAGE
Check that the valve is fully closed. If leakage occurs
while the valve is in the closed position, a seat or
ball sealant surface may be damaged and it will
be necessary to disassemble the valve.
NOTE: If Stem leakage and leakage at body joint are
not cured by the simple means described above,
it will be necessary to dismantle the valve. If there is
no stem leakage the stem assembly should not be
touched.
2

© SVF Flow Controls, Inc. • 13560 Larwin Circle • Santa Fe Springs, CA 90670 • Tel: [phone] • FAX: [phone]
[e-mail] • [e-mail] • Visit our website: www.SVF.net • Specicaons subject to change without noce
www .SVF. net
Please visit www.SVF.net for the latest updates on this document. All data posted on our website supersedes all prior publicaons • [Document # SVF_FS7_IOM • 10/21/2013]
INSTALLATION, OPERATION & MAINTENANCE FOR SVFSERIES FS7 BALL VALVES
FS7 Series Ball Valves
I N C O R P O R A T E D
SVFFlow Controls
IOM-FS7
REBUILDING
Before rebuilding, check that all the correct components
are available and that they are fit for reassembly. When
rebuilding, cleanliness is essential to allow long valve life
and provide cost eective maintenance.
PRECAUTIONARY RECOMMENDATIONS:
• No Body or Stem Seals are Reusable and Must Be
Replaced!!
• Care must be taken to avoid scratching the seats
and seals during installation.
• Do not use high speed impact wrenches when
assembling or disassembling fasteners.
• All fasteners (body bolts, nut, stems, etc) must be
inspected prior installation making sure all the
threaded areas are clean of any debris.
• It is recommended to use an anti-seize lubricant on
bolt threading.
• Failure to follow these recommendations may cause
damage to the components and/or cause galling of
the fasteners.
NOTE: Caution must be taken with valves that have been in
hazardous media. They must be decontaminated before
disassembly by relieving the line pressure and ushing the
line with the valve in the partially open position. Protective
clothing, face shields, gloves, etc., MUST BE USED for this
operation.
A DISASSEMBLY OF VALVE (Removed from line)
1.) Turn the valve to the OPEN position.
2.) Loosen the body bolts (#16) diagonally in accordance
with the cross pattern procedure shown on page # 4.
3.) After loosening all Body Bolts (#16), they can be
removed along with the End Connectors (#2).
4.) Remove the Seats (#5), Body Seals (#6), and Retainer
(#17).
5.) Make sure the Ball is in the closed position, thus the Ball
(#3) can be removed easily from the Body (#1).
B. REMOVING STEM ASSEMBLY
1.) Remove the Pipe Handle (#15) by removing the Pipe
Handle Bolt (#14).
2.) Remove the Pipe Handle Adapter (#13), and Tab-Lock
(#12).
3.) Remove the Stem Nut (#11) by holding the stem (#4)
rmly.
4.) Remove the Belleville Washers (#9), Stop Plate (#10),
Gland (#8), and Stem Seals (#7).
5.) Carefully push the Stem (#4) down into the body cavity
to remove. Once removed, take off the Thrust Washer
(#18).
C INSPECTION
1.) The ball and the surfaces of the seats should be free of
pit marks and scratches. Light marring from the action
of the ball against the seats is normal and will not aect
the operation of the valve.
2.) The stem and body surfaces, which the thrust washer
and Stem Seals make contact with, should be free of
pit marks and scratches.
D REASSEMBLY OF STEM
1.) Apply an adequate amount of lubricant compatible
with the media being handled around Stem (#4),
and Thrust Washer (#18).
2.) Place the NEW Thrust Washer (#18) on the Stem (#4)
and push the Stem up through the body cavity and
into the stem housing.
3.) After the Stem has been inserted through the cavity,
hold the bottom of the stem to prevent it from slipping out.
4.) Install the NEW Stem Seals (#7), Gland (#8), Stop Pins
(#19), Stop Plate (#10), Belleville Washers (#9) and
Stem Nut (#11).
5.) When the stem assembly is complete, rmly secure the
Stem (# 4) and tighten the Stem Nut (#11) according
to the values shown in Table A, Page 4.
E REASSEMBLY OF VALVE
1.) Apply an adequate amount of lubricant compatible
with the media being handled around the Ball (#3),
Seats (#5), and Body Seals (#6).
2.) Turn the Stem (#4) to the CLOSED position (“V”pointer of
stop plate to be perpendicular to the open cavity of
body) in order to insert the Ball (#3) into the Body (#1)
so that the stem slot of the ball engages with the tang
at the base of the stem.
3.) Turn ball to the OPEN position.
4.) Place the Body Seals (#6) on the Body (#1) and make
sure they rest squarely on the center seal surface of the
Body (#1).
5.) Insert the Seats (#5) into the Retainers (# 17) and place
them into the Body (#1). Note: Make sure each Seat/
Retainer set rests firmly on back surface of each Body
(#1) recess.
6.) Merge the End Connectors (#2) with the Body (#1).
7.) Insert and nger tighten the Body Bolts (#16) before
applying the torque wrench.
8.) Tighten the Body Bolts (#16) diagonally, in accordance
to the cross pattern procedure shown on page # 4.
9.) In the nal assembly step ensure that the Body Bolts (#16)
are tightened to torque values according to Table A,
Page 4.
3

© SVF Flow Controls, Inc. • 13560 Larwin Circle • Santa Fe Springs, CA 90670 • Tel: [phone] • FAX: [phone]
[e-mail] • [e-mail] • Visit our website: www.SVF.net • Specicaons subject to change without noce
www .SVF. net
Please visit www.SVF.net for the latest updates on this document. All data posted on our website supersedes all prior publicaons • [Document # SVF_FS7_IOM • 10/21/2013]
INSTALLATION, OPERATION & MAINTENANCE FOR SVFSERIES FS7 BALL VALVES
FS7 Series Ball Valves
I N C O R P O R A T E D
SVFFlow Controls
IOM-FS7
TABLE A: TORQUE REQUIREMENTS in-lbs)
REPAIR KITS
Repair Kits are available from SVF Flow Controls,
Inc. Table B below shows what the kits consist
of. When ordering a Repair Kit, please be sure
to specify the type, size and seating material
of the valve.
When repairing a valve use only SVF Flow
Controls, Inc. authorized spare parts including;
bolts and nuts, etc. In addition to maintenance
kits, spare parts are available from SVF Flow
Controls, Inc. They are: balls, stems and glands.
If additional parts are required (body and ends)
it is normally recommended that the complete
valve be replaced.
Components from a dierent valve series should
not be used with the repair of any other valve.
If the valve is altered in any way, no liability can
be accepted by SVF Flow Controls, Inc.
TABLE B: GENERAL REPAIR KIT
4
TORQUE SPECS
Certain precautions need to be followed when
tightening bolts down to their corresponding
torques to help prevent bolt galling. There
are two passes each bolt has to undergo
during the process, first pass and the final
pass. Once every bolt has met the rst pass
requirement, the final pass can be initiated.
When tightening down bolts it is necessary to
follow the corresponding bolt pattern shown
below.
FS7 SERIES BOLT PATTERN - BOLT TIGHTENING SEQUENCE
1 7
8 2
4 5
6 3
8
FS7
Valve
Size
Body Bolts
Bolt
Pattern First Pass Final Pass
Stem
Nuts
3” 8 177 354 620
4” 8 180 550 620
Part Quantity
Thrust Washers 1
Stem Seals 4
Belleville Washers 2
Seats 2
Body Seals 2

© SVF Flow Controls, Inc. • 13560 Larwin Circle • Santa Fe Springs, CA 90670 • Tel: [phone] • FAX: [phone]
[e-mail] • [e-mail] • Visit our website: www.SVF.net • Specicaons subject to change without noce
www .SVF. net
Please visit www.SVF.net for the latest updates on this document. All data posted on our website supersedes all prior publicaons • [Document # SVF_FS7_IOM • 10/21/2013]
INSTALLATION, OPERATION & MAINTENANCE FOR SVFSERIES FS7 BALL VALVES
FS7 Series Ball Valves
I N C O R P O R A T E D
SVFFlow Controls
IOM-FS7
TABLE C: MATERIALS OF CONSTRUCTION FOR SVF SERIES FS7 BALL VALVES
5
Item # Part Name Materials Recommended Spare Wetted
1 Body 316 Stainless Steel ASTM A351-CF8M,
Carbon Steel ASTM A216 WCB - X
2 End Connector 316 Stainless Steel ASTM A351-CF3M,
Carbon Steel ASTM A216 WCB - X
3 Ball 316 Stainless Steel ASTM A351-CF8M - X
4 Stem 316L Stainless Steel ASTM A276 - X
5 Seat TFM1600™ X X
6 Body Seal GRAFOIL®, PTFE X X
7 Stem Seal TFM1600™, GRAFOIL®, SupraLon™ X X
8 Gland 304 Stainless Steel - -
9 Belleville Washers Stainless Steel X -
10 Stop Plate Stainless Steel - -
11 Stem Nut Stainless Steel - -
12 Tab Lock Stainless Steel - -
13 Pipe Handle Adapter Stainless Steel - -
14 Pipe Handle Bolt Stainless Steel - -
15 Pipe Handle Stainless Steel - -
16 Body Bolt Stainless Steel - -
17 Retainer 316 Stainless Steel - -
18 Thrust Washer SupraLon™ X X
19 Stop Pin Stainless Steel - -
NOTE: The Belleville washers are
to be installed in alternating
directions. The bottom Belleville
washer is concave up while the
top Belleville is concave down.