SVF K8 Series Owner's manual

Series K8 Cryogenic Ball Valve
www.SVF.net
IOM-K8
INSTALLATION, OPERATION & MAINTENANCE FOR SVF SERIES K8 BALL VALVES
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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 specifications
herein.
The following instructions refer only to SVF Series K8
Cryogenic 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 positionduring 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
nature. Where there is evidence of harmful fluids
having flowed 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 flammable.
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.
Arrow on body indicates
direction of flow.

Series K8 Cryogenic Ball Valve
www.SVF.net
IOM-K8
INSTALLATION
The valve must be installed for flow or vacuum in one
direction (Arrow on side of body denotes direction of
flow). Carefully exclude pipe sealants from the valve
cavity. When installing, use standard gaskets suitable
for the specific service. Tighten flange bolts or studs
evenly.
Note: When valve is equipped with flange end
connections, be sure to support the valve adequately
throughout the installation process.
Flange weight will exert undesirable loads on the
valve body bolts.
OPERATION
SVF valves provide excellent modulating control when
used under normal conditions and in accordance with
SVF’s published pressure/temperature chart.
SVF valves have 1/4 turn operation closing in a
clockwise direction.
Any media which might solidify, crystallize or
polymerize should not be allowed to stand in the ball
valve cavities unless regular maintenance is provided.
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.
SVF valves are designed for easy service and assembly
in the field. The following checks will help to extend
valve life, or reduce plant problems.
If stem leakage is evident proceed as follows:
STEM LEAKAGE*
Tighten the gland nut firmly. If the leakage continues,
a new stem kit may be necessary.
LEAKAGE AT END CAP JOINT*
Check for tightness at the End Cap connector. If loose,
tighten End Cap. Excessive force will damage the End
Cap. Follow the torque values listed in Table A, Page 4.
If there is still leakage it will be necessary to dismantle
the valve and replace the body seal.
IN-LINE LEAKAGE
Check that 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: Stem leakage and leakage at the end cap
joint, if not cured by simple means described above,
may necessitate dismantling valve. If there is no stem
leakage the stem assembly should not be touched.
REBUILDING
Before rebuilding, check that all the correct components
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CAUTION: NO BODY, BONNET OR STEM SEALS ARE
REUSABLE. Care must be taken to avoid scratching
the seats and seal during installation.
2
INSTALLATION, OPERATION & MAINTENANCE FOR SVF SERIES K8 BALL VALVES

Series K8 Cryogenic Ball Valve
www.SVF.net
IOM-K8
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
flushing the line with the valve in the partially open
position. Protective clothing and face shields, gloves,
etc.MUST BE USED for this operation. Remove any
accessories attached to the valve before attempting
disassembly of valve.
A DISASSEMBLY OF VALVE (Removed from line)
1.) With the valve in the open position, undo Body
Bolt Nuts (#16) to separate valve Body (#1) and
End Cap (#2).
2.) Once the Body (#1) and End Cap (#2) have
been separated, remove the Seats (5) and the
Body Seals (#6).
3.) Make sure the Ball is in the closed position, thus
the Ball (#3) can be taken out easily from the
Body (#1).
4.) Remove the Handle Nut (#15) and remove the
Handle (#11).
5.) Remove the Tab Lock (#10)
6.) Loosen and remove the Stem Nut (#9), the Thrust
Washers (#7), O-Ring (#8A) and Stem Seals (#8).
7.) Remove the Bonnet Bolts (#21) and pull the
Bonnet (#18) away from the Body (#1).
8.) Remove the Bonnet Seal (#20) from the Body
(#1). If the Body Seal is GRAFOIL, carefully remove
using a sharp pointed object such as a pick
hand tool. Be careful not to scratch the Body
Seal grooves.
C INSPECTION
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 affect
the operation of the valve.
The stem, thrust bearing, steam seal and surrounding
body surfaces should be free of pit marks and scratches.
D REASSEMBLY
1.) Insert the Stem (#4) through the bottom of the
Bonnet (#8).
2.) Install the Stem Seal (#8) over the Stem (#4)
followed by the O-ring (#8A).
3.) Install the Thrust Washers (#7) over the Stem
(#4) until it rests on top of the Stem Seals (#8).
4.) Lubricate the Stem (#4) threads with anti-
galling lubricant approved for cryogenic
applications
5.) Thread the Stem Nut (#9) onto the Stem (#4),
and tighten the stem nut to completely
compress the thrust washer and then back off
by 1/4th of a turn.
6.) Install the Tab Lock (#10) on top of the Stem
Nut (#9)
7.) Install the Bonnet Seal (#20) on the seal groove
on top of the Body (#1). Slide the Thrust Bearing
(#19) into the bottom of the Bonnet (#18).
Install the Bonnet (#18) on the Body (#1).
8.) Lubricate the Bonnet Bolts (#21) with anti-
galling lubricant approved for cryogenic
applications.
9.) Install the Bonnet Bolts (#21) onto the Bonnet
(#18). Tighten the Bonnet Bolts to the
recommended torque on Table A, Page 4.
10.) Rotate the Stem (#4) to close the valve.
11.) Install the Ball (#3) into the Body (#1) by
orienting the slot in the ball to engage to the
stem tang. When the valve is in the closed
position, the vent hole on the ball should face
the upstream direction.
12.) Rotate the Stem (#4) until the ball is in the open
position. Install the Body Seals (#6) and Seats
(#5) into the Body (#1).
13.) Merge the End Caps (#2) onto the Body (#1)
and Insert and tighten the Body Bolts (#16)
diagonally in accordance to the cross pattern
procedure.
14.) In the final assembly step ensure that the body
bolts are tightened according to the torque
values in Table A, Page 4.
3
INSTALLATION, OPERATION & MAINTENANCE FOR SVF SERIES K8 BALL VALVES

Series K8 Cryogenic Ball Valve
www.SVF.net
IOM-K8
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 and stem. If
additional parts are required (body and ends)
it is normally recommended that the complete
valve be replaced.
Components from a different 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.
4
INSTALLATION, OPERATION & MAINTENANCE FOR SVF SERIES K8 BALL VALVES
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 first pass
requirement, the final pass can be initiated.
When tightening down bolts it is necessary to
follow the corresponding bolt pattern shown
below.
1 3
4 2
4
TABLE B: GENERAL REPAIR KIT
Part Quantity
Thrust Washer 1
Stem Seals 5
Bonnet Seal 1
Seats 2
Thrust Bearing 1
Body Seals 2
O-Ring 1
Valve Size Body Bolts Bonnet Bolts
First Pass Final Pass First Pass Final Pass
1/2” (Full Port) 90 155 35 60
3/4” 90 155 35 60
1” 90 155 35 60
1-1/2” 180 300 50 80
2” 180 300 90 155
Notes:

Series K8 Cryogenic Ball Valve
www.SVF.net
IOM-K8
MATERIALS OF CONSTRUCTION FOR SVF SERIES K8 BALL VALVES
5
Item # Part Name Materials Repair Kit Parts Wetted
1 Body A351-CF8M - X
2 End Cap A351-CF8M - X
3 Ball A351-CF8M - X
4 Anti-Static Stem Stainless Steel 17-4 ph - X
5 Seat PCTFE X X
6 Body Seal GRAFOIL®/PCTFE X X
7 Thrust Washer PCTFE X X
8A O-Ring Viton® X X
8 Stem Seals PCTFE X X
9 Stem Nut SS304 - -
10 Tab Lock SS304 - -
11 Handle SS304 - -
12 Stop Bolt SS304 - -
13 Stop Nut SS304 - -
14 Stop Washer SS304 - -
15 Handle Bolt SS304 - -
16 Body Bolt SS304 - -
17 Handle Sleeve Vinyl - -
18 Bonnet A351-CF8M - X
19 Thrust Bearing Carbon Filled PTFE X X
20 Bonnet Seal GRAFOIL®/PCTFE X X
21 Bonnet Bolt SS304 - -
22 Pipe Handle (2”) SS304 - -
NOTE: After valve assembly is completed, install the proper valve
handle parallel to the groove on the top of the stem as shown.
For 2” Valves:
For 1/2” ~ 1-1/2” Valves:
VALVE HANDLE INSTALLATION
Slide the Pipe Handle (#22)
through the Pipe Handle Adapter
(#11) and tighten the Handle Bolt
(#15).
15
11
4
Slide the Handle (#11) over the top
of the Stem (#4) and tighten the
Handle Nut (#15)
Groove on
top of Stem
(2”)
1
2
3
4
5
6
8
7
8A
9
10
11
13
12
14
15
17
16
18
19
20
16
22
15
22
4
15