KEYSTONE FIGURE V11 BUTTERFLY VALVE
InstallatIon, operatIon and MaIntenance Manual
Please read these instructions carefully
CAUTION - indicates that it may lead to injuries
or damages on the properties.
WARNING - indicates that it may lead human
body to serious injuries.
DANGER - indicates that it may lead human
body to death.
TECHNICAL DATA
PIPE FLANGE BOLT TIGHTENING TORQUE
Recommended torque
Bolt size Nm
M12 x 1.75 17
M16 x 2 41
M20 x 2.5 81
M24 x 3 139
M27 x 3 194
M30 x 3.5 281
M33 x 3.5 358
M36 x 4 481
Bolt size Recommended torque
U.N.C Ft-lbs
⅝ 30
¾ 50
⅞ 80
1 123
1⅛ 195
1. Torques based on 100 Mpa induced stress
infastener threads.
2. Values are based on steel bolting well
lubricated with a heavy graphite and oil
mixture.
3. For cadmium plated fasteners multiply
torque x0.75.
4. For zinc plated fasteners multiply torque
x1.40.
5. Recommended torques are a minimum.
Formaximum torque multiply torque x 1.05.
INSTALLATION
The valves are shipped with flange surface
protection. Before installing the valve, remove
the protection.
CAUTION
The valve should be installed in the slight opened
position whether the gap between disc edge and
body flange face is about 10 mm to insure that the
seat and disc are not damaged during installation.
Particular care should be taken with valves
equipped with "single acting" actuators.
Failure to insure proper handling may result in
damage to the valve.
If the pipe is lined, confirm that the disc rotation
does not contact the lining during the opening
stroke. Failure to confirm that the disc rotation
dose not contact the lining may result in damage
to the valve.
The Figure V11 valves are bi-directional and will
control flow equally well in either direction.
Flange accommodation: The Figure V11
is designed by
JIS5K/10K code
Pressure rating: 5 kg/cm
2
, 10 kg/cm
Temperature range: -40°C - 120°C
CARRIAGE AND STORAGE
2
1. Carriage
The valve shall be carried safely not to be
impacted or affected by other object. Especially,
Figure 1
the wheel of operator and disc edge shall be
protected by any means.
2. Storage
The valve shall be stored in the higher place
which is able to prevent from being submerged
in water and keep off from penetration of
rainwater or cover it with waterproof cloth,
which Keystone valve LLC. does not provide, to
avoid being wetted.
When worker installs the valve, remove
the dust and extraneous substances after
disassembling the pallet and protective cover.
www.valves.emerson.com © 2017 Emerson. All rights reserved.
VCIOM-02830-EN 14/05
KEYSTONE FIGURE V11 BUTTERFLY VALVE
InstallatIon, operatIon and MaIntenance Manual
Installation in new construction using welding
type flanges
1. With the disc in the slight opened position,
align and center the companion flange bolt
holes to the body alignment holes.
2. Assemble the body and flanges with the
flange bolting and make-up the bolting.
3. Using the flange-body-flange assembly for
fit-up and centering to the pipe.
4. Tack weld the flanges to the pipe.
5. Remove the flange bolting and valve
assembly from between the flanges.
CAUTION
Do not finish weld the flanges to the pipe with the
valve bolted between the flanges as this will result
in serious heat damage to the valve seat.
6. Finish welding the flanges to the pipe and
allow the flanges to cool completely before
proceeding.
MAINTENANCE
Routine maintenance or lubrication is not
required.
Be sure to be familiar with following facts
before installing valves.
Tie up with rope when handling the butterfly
valve assembly for Figure V11.
Dismantling the valve from pipe (Figure 5)
1. Be sure that the fluid and pressure in
valve and pipe must be removed before
dismantling.
2. Close the valve.
3. Cut off the supply of the electric power,
hydraulic or pneumatic pressure depending
on the kinds of operators attached and
disconnect the electric cable, hydraulic or
pneumatic hoses.
4. Release the flange bolt in order to
disassemble the valve assembly.
Disassemble the operator ahead when
necessary.
5. Dismantle the valve after open the flanges
sufficiently using tools.
6. Disassembly the operator in the condition of
fastening the valve assembly on vise.
WARNING
Make sure that the fluid and hydraulic or
pneumatic pressures in valve, operator and pipe
are removed, and then dismantle the disc in the
position of full close after taking safety measures.
Figure 2
Figure 3
1. Tie up feature with rope when handling the
valve assembly vertically. (Figure 2) Lift the
valve in the condition of tying upper neck
with ropes. Tie up the front and rear side of
valve with two ropes, because the rope may
be removed when useone rope.
2. Tie up feature with rope when handling the
valve assembly horizontally. (Figure 3, 4) Lift
the valve in the condition of tying upper and
lower neck with ropes. Beware that the rope
on the lower neck may not be removed or
valve assembly may not be tilted.
DANGER
Use the rope made by synthetic fiber only
taking into account of valve weight and safety
andpayattention that paint on the valve does not
peel. When worker lifts the valve assembly, which
isequipped hand wheel including gear box, in the
condition of tying hand wheel with rope, he(she)
shall comply with the specific method which
manufacturer provides because the stem may be
distorted orthe cover may be damaged.
Figure 4
Figure 5
2
KEYSTONE FIGURE V11 BUTTERFLY VALVE
InstallatIon, operatIon and MaIntenance Manual
DISASSEMBLY
CAUTION
When assembling or disassembling the valve,
workers have to be careful that each component
including disc edge shall not be damaged.
Disassembly of the valve, size NPS 2.5 to 34
(Figure 6)
1. Remove the disc screws and O-ring for the
valves.
2. Open the disc.
3. Remove the stem by pulling it out through
the valve top plate.
4. Remove the disc from the valve body by
pulling or “rolling” the disc out of the seat
bore.
5. Remove the seat by prying under both seat
edges at one point, collapse the seat into
the shape of a round bottom heart, and pull
the seat out of the body bore.
6. Remove the bushing, packing and inspect
for damage. Replace if needed.
7. Remove the bottom cover screws and
spring washer (NPS 22-34).
8. Remove the bottom cover and O-ring
(NPS22-34).
(NPS 22-34)
Bushing
Packing
Stem
Body
Seat
Disc
O-ring and disc screw
O-ring and bottom cover
{
Bottom cover screw and spring washer
Figure 6
Disassembly of the valve, size NPS 36 to 72
(Figure 7)
1. Remove the disc screws and O-ring for the
valves. (In case of NPS 48-72 valves, pull the
taper pin out after removingthenut.)
2. Open the disc.
3. Remove the stem by pulling it out through
the valve top plate.
4. Remove the disc from the valve body by
pulling or “rolling” the disc out of the seat
bore.
5. Remove the seat by prying under both seat
edges at one point, collapse the seat into the
shape of a round bottom heart, and pull the
seat out of the body bore.
6. Remove the packing holder, O-ring and
inspect for damage. Replace if needed.
7. Remove the bottom cover screws and spring
washers.
8. Remove the bottom cover and O-ring.
8. Remove the upper bearing and lower
bearing.
O-ring (inner)
Packing holder
O-ring (outer)
Stem
Body
Upper bearing
Seat
Lower bearing
Bottom cover O-ring
Lower bearing
Disc
Figure 7
O-ring and
disc screw
Spring washer
Bottom cover screw
3
KEYSTONE FIGURE V11 BUTTERFLY VALVE
InstallatIon, operatIon and MaIntenance Manual
INSPECTION OF VALVE COMPONENTS
• Inspect the body for any corrosion and
damage.
• Inspect the seat for any wear and damage.
• Inspect around the disc edge for any scratch.
If there is any scratch on disc edge, polish the
edge with sandpaper.
• Use the electric powered wire brush in order
to polish the disc edge.
• Use the lathe machine to finish polishing or
sanding, when necessary.
ASSEMBLY
Assembly of valve, size NPS 2 to 20
1. Clean all components and settle the valve
body on the vise.
2. Insert the packing and bushing to the upper
side of the body. (Figure 8)
3. Bend the seat like the shape of heart and
insert the seat in the seat pocket with
adjusting the stem hole of seat to the stem
hole of lower body. (Figure 9)
4. Adjust the stem holes in the body and seat
hole by thrusting in and pulling out using
stem or T-shape jig, and then thrust the
stem into the stem hole with protruding the
screwed part 10 mm. (Figure 10)
5. Apply silicon oil to the inner seat and adjust
the upper stem hole of disc to the protruded
screwed part of upper side. Then, push and
insert the disc until the lower side of disc
set to the lower stem hole. (Figure 11)
6. Drive the stem into the body until adjust the
holes between stem disc and screw hole be
matched using rubber hammer. And adjust
the screw hole centre of stem by rotating
the disc. (Figure 12)
7. Adjust the screw holes between stem and
disc correctly using pin or screwdriver and
fasten the screw tightly after inserting the
O-ring onto the disc screw. (Figure 13)
8. Finish assembling the valve. (Figure 14)
Figure 8
Figure 9
Figure 10
Figure 12
Figure 13
Figure 14
10 mm
Figure 11
4
KEYSTONE FIGURE V11 BUTTERFLY VALVE
InstallatIon, operatIon and MaIntenance Manual
Figure 15
Assembly of valve, size NPS 22 to 72
(Figure15)
1. Clean all components and settle the valve
body on the vise.
2. Insert the packing and bushing at the upper
side of body.
In case of size NPS 36-72, insert the packing
holder of which has O-ring.
3. Bend the seat like the shape of heart
and insert the seat in the seat pocket
with adjusting the seat hole of seat to the
stem hole of lower body. In case of size
NPS36-72, insert the upper and lower
bearings ahead prior to inserting seat.
4. Adjust the seat hole to the body hole by
striking with rubber hammer, and then drive
the stem into the stem hole with protruding
the screwed part 10 mm using rubber
hammer.
5. Apply silicon oil to the inner seat and adjust
the upper stem hole of disc to the protruded
screwed part of upper side. Then, push and
insert the disc until the disc set to the lower
stem hole using hoist or C-clamp.
6. Drive the stem into the body until the holes
between stem and screw hole be matched
using rubber hammer. And adjust the hole
centre by rotating the disc.
7. Adjust the screw holes between stem
and disc correctly using pin or drive. And
fasten the screw tightly after inserting the
O-ring onto the disc screw. (In case of size
NPS48-72, taper pin instead of discscrew.
Fastenthenut at the back side after
inserting taperpin.)
8. Fasten the bottom cover screws with spring
washer after assembling the bottom cover
of which O-ring has been inserted into the
body.
9. Finish assembling the valve.
Install the valve assembly into the pipe
1. Fix the valve on the vise and install the
worm gear box and actuator.
2. Check the condition whether the gap
between disc edge and body flange is about
10 mm. (Figure 16)
CAUTION
Workers shall pay attention to the position of disc
because disc edge may be damaged when the
disc is opened more than the face of body flange,
and the excessive torque may be caused by the
distortion of seat when fasten the flange bolt in
the state of entire closure.
3. Insert the valve after widening the flanges
sufficiently. The gap between flanges shall
be wider than the width of valve. When insert
the valve in the condition of insufficient
flange gap, the seat may be distorted or torn
and cause the leakage. (Figure 17)
4. Adjust the valve alignment hole or tap hole
to the flange hole, pass the bolt through the
flange hole, alignment hole or tap hole and
check the position of valve. Tighten the bolt
with hand if there is no problem. (Figure 18)
5. Open the disc fully by operating handle in
order to check whether or not the edge of
pipe and disc edge contact each other.
6. After making sure of smooth operating of
valve, fasten the bolts with the tool by the
diagonal sequence in the condition of full
opening.
7. Finish installing the valve assembly onto the
pipe. (Figure 19)
CAUTION
Do not use the flange gaskets.
Figure 16
10 mm
Figure 17
Figure 18
Figure 19
5
KEYSTONE FIGURE V11 BUTTERFLY VALVE
InstallatIon, operatIon and MaIntenance Manual
TROUBLE SHOOTING GUIDE
Symptom Possible cause Resolution
Valve opens only a few degrees and stops
(Itwill not open to the full angle desired)
Leakage past the flange face 1. Flange bolts are not evenly torqued 1. Loosen the flange bolts and tighten the flange bolts to correct
Leakage in the closed position
(Leakageinthe pipe line)
Leakage at the valve stem 1. Seat stem hole or packing failure 1. Refer to valve disassembly procedures
Water hammer 1. The valve is closing too quickly 1. Adjust the actuator
Excessively high torque 1. Obstruction in the pipe line
1. The valve is improperly aligned and improper
installation
2. Improper flanges 2. Refer to flange accommodation on page 1
The disc is not closing fully:
1. Actuator is not properly adjust 1. Refer to the adjustment procedures
2. Damaged seat 2. Replace seat
3. Line pressure exceeds valve’s working pressure 3. Reduce line pressure to valve working pressure
4. Damaged valve disc 4. Replace disc
2. Valve stem or disc bent 2. Return the valve to factory for disc or stem replacement (Checkfor
3. Scale build-up on stem or seat 3. Open and close the valve several times, operate the valve at least
1. Loosen the flange bolts, realign the valve with flanges and
retighten the flange bolts to correct torque per ANSI requirement
torque per ANSI requirement
1. Remove the valve from pipe line and remove obstruction
water hammer or freezing of line material)
once a month, check the valve seat for deterioration
© 2017 Emerson. All rights reserved.
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