Metso Jamesbury Wafer-Sphere Series Operating and maintenance manual

IMO-308 EN • 1/2018
Wafer-Sphere® Butterfly Valve
Model C
2 1/2” - 24” (DN65 - 600) Class 150 & 300
Installation, Maintenance and
Operating Instructions

IMO 1/18
2 IMO-308 EN
READ THESE INSTRUCTIONS FIRST!
These instructions provide information about safe handling and operation of the valve.
If you require additional assistance, please contact the manufacturer or manufacturer’s representative.
Addresses and phone numbers are printed on the back cover.
See also www.metso.com/valves for the latest documentation.
SAVE THESE INSTRUCTIONS!
TABLE OF CONTENTS
1. GENERAL................................................................... 3
1.1 Scope of the Manual .................................................... 3
1.2 Oset Shaft Design....................................................... 3
1.3 Positive Stop Feature.................................................... 3
1.4 Actuation.......................................................................... 3
1.5 Wafer Body Design........................................................ 3
1.6 Snap-in Inserts................................................................ 3
1.7 Valve Markings ............................................................... 4
1.8 Safety Precautions......................................................... 4
2. TRANSPORTATION AND STORAGE.......................... 5
3. INSTALLATION.......................................................... 5
3.1 General.............................................................................. 5
3.2 Installing in the pipeline ............................................. 5
3.3 Valve Insulation.............................................................. 6
3.4 Actuator ............................................................................ 6
3.5 Commissioning .............................................................. 6
4. MAINTENANCE......................................................... 6
4.1 General.............................................................................. 6
4.2 Actuated Valve................................................................ 7
4.3 Valve Removal ................................................................ 7
4.4 Seat Replacement Standard Valves......................... 8
4.5 Seat Replacement Fire-Tite Valves............................ 8
4.6 Shaft Seal Replacement .............................................. 9
4.7 Valve Disassembly.......................................................10
4.8 Checking Parts..............................................................10
4.9 Valve Assembly.............................................................10
4.10 Testing the Valve..........................................................11
5. MANUAL HANDLES ................................................ 12
5.1 General............................................................................12
5.2 Change of Handle Quadrant ...................................12
5.3 Setting Handle Stop ...................................................12
6. ACTUATOR .............................................................. 12
6.1 Actuator Mounting Instructions ............................13
6.2 Direct Drive Mounting...............................................13
7. REPAIR KITS ............................................................ 14
8. SERVICE / SPARE PART ........................................... 14

IMO 1/18
IMO-308 EN 3
1. GENERAL
1.1 Scope of the Manual
This instruction manual contains important information
regarding the installation, operation and maintenance of
the Jamesbury® Model C Wafer-Sphere Buttery Valves.
Please read these instructions carefully and save them for
future reference.
WARNING:
AS THE USE OF THE VALVE IS APPLICATION SPECIFIC, A NUMBER
OF FACTORS SHOULD BE TAKEN INTO ACCOUNT WHEN SELECTING
A VALVE FOR A GIVEN APPLICATION. THEREFORE, SOME OF THE
SITUATIONS IN WHICH THE VALVES ARE USED ARE OUTSIDE THE
SCOPE OF THIS MANUAL.
IFYOU HAVE ANY QUESTIONS CONCERNING THE USE, APPLICATION
OR COMPATIBILITY OF THE VALVE WITH THE INTENDED SERVICE,
CONTACT METSO FOR MORE INFORMATION.
1.2 Oset Shaft Design
One of the design features of the Wafer-Sphere valve that
is responsible for its superior performance is the valve’s
oset shaft design. The shaft is oset in two planes: (1)
away from the valve disc centerline and (2) behind the disc
sealing plane (See Figure 1). Oset shaft design makes the
rotating disc“cam”back and away from the seat, completely
eliminating the usual wear points at the top and bottom of
the seat. Because the disc rotates o the seat in an eccentric
arc, it operates in one quadrant only (See Figure 1).
WARNING:
IF THE VALVE DOES NOT HAVE EITHER A HANDLE ON AN ACTUATOR
DO NOT PRESSURIZE. UNRESTRAINED DISC MAY OPEN OR CLOSE
DUE TO PIPELINE PRESSURE.
1.3 Positive Stop Feature
To prevent seat damage from over-travel of the disc
beyond the closed position (usually during eld mounting
of a handle or actuator), a “positive stop” feature has
been designed into the Wafer-Sphere buttery valve. The
“positive stop” feature also makes it possible to adjust the
actuator travel stops in-line. The location of this feature is
shown in (Figure 1).
1.4 Actuation
High line pressure may create high enough forces to pull a
manual handle out of an operator’s hand. With Types 815W,
815L, 830W, and 830L valves, either a manual gear operator,
a pneumatic or an electric actuator should be used in place
of a detent handle when the dierential pressure exceeds
those listed in (Table 1).
TABLE 1
Valve Size
Maximum Allowable Dierential
Pressure for Use
With a Detent Handle
3” & 4”
(DN 80 & 100)
300 psi
(20.7 bar)
5”, 6” & 8”
(DN 125, 150 & 200)
105 psi
(10.35 bar)
10” & 12”
(DN 250 & 300)
50 psi
(3.45 bar)
1.5 Wafer Body Design
Some wafer designs (See Figure 2) contain ange bolt
holes or slots in the body to hold the valve and assist
with correct alignment during installation in the line. The
centering holes or slots in wafer bodies alone are not
suitable, or intended for containing line pressure, and are
only for use in conjunction with a fully bolted pipeline
ange.
1.6 Snap-in Inserts
Snap-in inserts on wafer style valves must be clamped
before cycling the valve when out of the pipeline. Use
soft-faced clamps across the body to avoid damaging the
gasket surface. Damage to body seals can result if snap-in
inserts are not clamped when valve is cycled.
Offset Shaft Operation
Figure 1
Positive Stop
HANDLE DIRECTION
VALVE OPEN
HANDLE
DIRECTION
VALVE
CLOSED
Open Always
Counterclockwise
Close Always
Clockwise

Wafer Body Design
Figure 2
IMO 1/18
4 IMO-308 EN
1.7 Valve Markings
The valve has an identication plate attached to the valve
body (see Figure 4).
Identication plate markings:
1. Trim material
2. Valve catalog code
3. Seat Material
4. Body Material
5. Maximum operating pressure
6. Maximum/minimum shut-o pressure/temperature
7. Approvals/Special Service marking
8. Model
9. Assembly date
1.8 Safety Precautions
WARNING:
DO NOT EXCEED THE VALVE PERFORMANCE LIMITATIONS!
EXCEEDING THE PRESSURE OR TEMPERATURE LIMITATIONS
MARKED ON THE VALVE IDENTIFICATION PLATE MAY CAUSE
DAMAGE AND LEAD TO UNCONTROLLED PRESSURE RELEASE.
DAMAGE OR PERSONAL INJURY MAY RESULT.
WARNING:
SEAT AND BODY RATINGS!
THE PRACTICAL AND SAFE USE OF THIS PRODUCT IS DETERMINED
BY BOTH THE SEAT AND BODY RATINGS. READ THE IDENTIFICATION
PLATE AND CHECK BOTH RATINGS. THIS PRODUCT IS AVAILABLE
WITH A VARIETY OF SEAT MATERIALS. SOME OF THE SEAT
MATERIALS HAVE PRESSURE RATINGS THAT ARE LESS THAN
THE BODY RATINGS. ALL OF THE BODY AND SEAT RATINGS ARE
DEPENDENT ON VALVE TYPE AND SIZE, SEAT MATERIAL, AND
TEMPERATURE. DO NOT EXCEED THESE RATINGS!
WARNING:
BEWARE OF DISC MOVEMENT!
KEEP HANDS, OTHER PARTS OF THE BODY, TOOLS AND OTHER
OBJECTS OUT OF THE OPEN FLOW PORT. LEAVE NO FOREIGN
OBJECTS INSIDE THE PIPELINE. WHEN THE VALVE IS ACTUATED,
THE DISC FUNCTIONS AS A CUTTING DEVISE. DISCONNECT ANY
PNEUMATIC SUPPLY LINES, ANY ELECTRICAL POWER SOURCES
AND MAKE SURE SPRINGS IN SPRINGRETURN ACTUATORS ARE
IN THE FULL EXTENDED/RELAXED STATE BEFORE PERFORMING
ANY VALVE MAINTENANCE. FAILURE TO DO THIS MAY RESULT IN
DAMAGE OR PERSONAL INJURY!
Square drive in
disc closed
position.
Blade drive in disc
closed position.
WAFERSPHERE BUTTERFLY VALVES
WAFER DESIGN
WAFERSPHERE BUTTERFLY VALVES
SINGLE FLANGE LUGGED DESIGN
Square drive in
disc closed
position
Blade drive in
disc closed
position.
Single Flange Body Design
Figure 3
Identification Plate
Figure 4
Wafer Body Design
Figure 2

IMO 1/18
IMO-308 EN 5
WARNING:
WHEN HANDLING THE VALVE OR VALVE/ACTUATOR ASSEMBLY,
TAKE ITS WEIGHT INTO ACCOUNT!
NEVER LIFT THE VALVE OR VALVE/ACTUATOR ASSEMBLY BY THE
ACTUATOR, POSITIONER, LIMIT SWITCH OR THEIR PIPING. PLACE
LIFTING DEVICES SECURELY AROUND THE VALVE BODY. FAILURE
TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN DAMAGE OR
PERSONAL INJURY FROM FALLING PARTS SEE FIGURE 5.
WARNING:
BEWARE OF NOISE EMISSIONS!
THE VALVE MAY PRODUCE NOISE IN THE PIPELINE. THE NOISE
LEVEL DEPENDS ON THE APPLICATION. OBSERVE THE RELEVANT
WORK ENVIRONMENT REGULATIONS ON NOISE EMISSION.
2. TRANSPORTATION AND STORAGE
Check the valve and the accompanying devices for any
damage that may have occurred during transport.
Store the valve carefully. Storage indoors in a dry place is
recommended.
Do not remove the ow port protectors until installing the
valve.
Move the valve to its intended location just before
installation.
The valve is usually delivered in the closed position.
If the valve(s) are to be stored for a long duration, follow the
recommendations of IMO-S1.
3. INSTALLATION
3.1 General
Remove the ow port protectors and check that the valve
is clean inside. Clean valve if necessary.
Flush the pipeline carefully before installing the valve.
Foreign objects, such as sand or pieces of welding
electrodes, will damage the disc and seats.
3.2 Installing in the pipeline
WARNING:
THE VALVE SHOULD BE TIGHTENED BETWEEN FLANGES USING
APPROPRIATE GASKETS AND FASTENERS COMPATIBLE WITH
THE APPLICATION, AND IN COMPLIANCE WITH APPLICABLE
PIPING CODES AND STANDARDS. CENTER THE FLANGE GASKETS
CAREFULLY WHEN FITTING THE VALVE BETWEEN FLANGES. DO
NOT ATTEMPT TO CORRECT PIPELINE MISALIGNMENT BY MEANS
OF FLANGE BOLTING! RECOMMENDED FASTENER LENGTHS ARE
LISTED IN BULLETIN T1041.
The valve may be installed in any position and oers
tightness in both directions. For lowest operating torque
it is recommended, however, that the valve be installed
with the body insert towards the higher pressure, (shaft
downstream).
1. Read all WARNINGS!
2. IMPORTANT: Only operating handle stops or actuator
stop screws must be used to stop the disc position. DO
NOT use the“positive stop” by itself to limit travel.
3. Visually check the position of the disc when valve is in
the closed position and the insert is fully compressed.
The disc should be parallel to the anges within 1/32”
(0.79mm).
4. Before installing a closed valve in the pipeline, be
sure that the handle or actuator is attached so that a
counter-clockwise rotation, viewed from above, opens
the valve (See Figure 1). Fully close the valve again
before installing in the pipeline.
5. The Wafer-Sphere buttery valve must be centered
between anges to avoid disc-pipe contact which
could damage the disc and shaft. Any ange or
pipeline welding should be done prior to installation
of the valves. If this is impossible, protective covering
or shields must be placed in the pipeline between the
valve and the area being welded prior to welding. Not
only must the valve be protected against weld slag, but
also against any excessive heat, which could cause seat
damage. It is essential that all weld slag, rods, debris,
tools, etc., be removed from the pipeline before valves
are installed or cycled.
6. It is not recommended to install the valve with the stem
on the underneath side because dirt in the pipeline
may then enter the body cavity and potentially
damage the stem packing (see Figure 6).
Lifting the valve
Figure 5

Insulation Limit
IMO 1/18
6 IMO-308 EN
Refer to the Section 4, MAINTENANCE for stem seal
adjustment. If there is weepage past the stem seals upon
installation, it means the valve may have been subject
to wide temperature variations in shipment. Leak-tight
performance will be restored by a simple stem seal
adjustment described in the MAINTENACE section.
3.3 Valve Insulation
If necessary, the valve may be insulated. Insulation must not
continue above the upper level of the valve (see Figure 7).
3.4 Actuator
WARNING:
WHEN INSTALLING THE ACTUATOR ON THE VALVE, MAKE SURE
THAT THE VALVE ASSEMBLY FUNCTIONS PROPERLY. INFORMATION
ON ACTUATOR INSTALLATION IS GIVEN IN SECTION 6 OR IN THE
SEPARATE ACTUATOR INSTRUCTIONS.
The actuator should be installed in a manner that allows
plenty of room for its removal.
The upright position is recommended for the actuator.
The actuator must not touch the pipeline, because pipeline
vibration may interfere with its operation.
In certain cases it may be considered advantageous to
provide additional support to the actuator. These cases
will normally be associated with large actuators, extended
stems, or where severe vibration is present. Please contact
Metso for advice.
3.5 Commissioning
Ensure that there is no dirt or foreign objects left inside the
valve or pipeline. Flush the pipeline carefully. Make sure
that the valve is fully open when ushing.
Ensure that all nuts, ttings, and cables are properly
fastened.
If so equipped, check that the actuator positioner and/
or switch are correctly adjusted. Actuator adjustment
is explained in Section 6. To adjust any accompanying
device(s) refer to the separate control equipment
instruction manuals.
4. MAINTENANCE
4.1 General
Although Metso’s Jamesbury valves are designed to work
under severe conditions, proper preventative maintenance
can signicantly help to prevent unplanned downtime and
in real terms reduce the total cost of ownership. Metso
recommends inspecting valves at least every ve (5) years.
The inspection and maintenance frequency depends on
the actual application and process condition. Routine
maintenance consists of tightening the hex head cap
screws (15) in (Figure 15) periodically to compensate for
stem seal wear.
Overhaul maintenance consists of replacing seats and
seals. A standard repair kit consisting of these parts may be
obtained through your authorized Metso Distributor.
NOTE: Repair kits include thrust bearings (13), secondary
stem seal (7), seats (5), and body seal (6) and stem seals (8).
Refer to the Repair Kit chart (see Table 6).
WARNING:
FOR YOUR SAFETY IT IS IMPORTANT THE FOLLOWING
PRECAUTIONS BE TAKEN PRIOR TO REMOVAL OF THE VALVE FROM
THE PIPELINE OR BEFORE ANY DISASSEMBLY:
1. WEAR ANY PROTECTIVE CLOTHING OR EQUIPMENT
NORMALLY REQUIRED WHEN WORKING WITH THE FLUID
INVOLVED.
2. DEPRESSURIZE THE PIPELINE AND CYCLE THE VALVE AS
FOLLOWS:
A. PLACE THE VALVE IN THE OPEN POSITION AND DRAIN
THE PIPELINE.
B. CYCLE THE VALVE TO RELIEVE RESIDUAL PRESSURE
IN THE BODY CAVITY BEFORE REMOVAL FROM THE
PIPELINE.
C. AFTER REMOVAL AND BEFORE ANY DISASSEMBLY,
CYCLE THE VALVE AGAIN SEVERAL TIMES.
Avoid this mounting position
Figure 6
Figure 7

IMO 1/18
IMO-308 EN 7
4.2 Actuated Valve
It is generally most convenient to detach the actuator
and its auxiliary devices before removing the valve from
the pipeline. If the valve package is small or if it is dicult
to access, it may be more practical to remove the entire
assembly.
NOTE: To ensure proper reassembly, observe the position
of the actuator and positioner/limit switch with respect to
the valve before detaching the actuator.
WARNING:
ALWAYS DISCONNECT THE ACTUATOR FROM ITS POWER SOURCE,
PNEUMATIC, HYDRAULIC OR ELECTRICAL, BEFORE ATTEMPTING TO
REMOVE IT FROM THE VALVE!
WARNING:
DO NOT REMOVE A SPRINGRETURN ACTUATOR UNLESS A
STOPSCREW IS CARRYING THE SPRING FORCE!
1. Detach the air supply, electrical supply, hydraulic
supply and control signal cables or pipes from their
connectors.
2. Loosen screws of no-play coupling.
3. Unscrew the actuator mounting bracket screws.
4. Lift the actuator straight up in line with the valve stem
until the coupling between actuator drive and valve
stem is completely disengaged.
5. Place actuator in a safe location to avoid damage or
personal injury.
4.3 Valve Removal
1. Read all WARNINGS!
2. Valve must be fully closed before removing it from the
pipeline.
3. CAUTION: Valves equipped with spring-to-open
(air-to-close) actuators must be disconnected from the
actuators and then closed. Valves must be closed while
removing them from the pipeline.
Removing Insert
Placing Spring Into Groove
Tapping End Of Spring Into Body
Installing Seat And Insert Assembly Into Body.
Angled As To Engage Insert Spring
Tapping Insert Assembly Into Body
Insert Removal / Installation
Figure 8

IMO 1/18
8 IMO-308 EN
4.4 Seat Replacement Standard Valves
Numbers in ( ) refer to items shown in (Figure 15).
1. After removing the valve from the line, place it on a
bench. Take care not to damage the sealing edge of
the valve disc.
2. Insert Styles:
A. Bolted Insert:
Remove the insert screws (21) and the insert (2). If the
insert does not lift out easily, tap it out from the shaft
side using a wooden or plastic rod and a hammer. Do
not strike the valve directly with a hammer.
B. Snap-In Insert (See Figure 8):
Using a wooden or plastic rod and hammer, drive the
insert out of the body from the shaft side. The rod
should be placed on either side of the positive stop
in the body. Do not strike the valve directly with a
hammer. (NOTE: Removal of the insert often results in
damage to the seat being replaced.)
3. Remove the seat (5) and discard it.
4. Remove the body seal (40) when applicable, (2-1/2”, 3”
and 4” [DN 65, 80 and 100] Series 815L and 830L.
5. Clean the valve, and deburr the insert.
6. Carefully clean and polish the disc sealing surface. It
should be free of all grooves and scratches.
7. If the disc is slightly damaged, it may be possible to
smooth the sealing surface with crocus cloth, a ne
stone, or the equivalent. If deep scratches are present,
replace disc or return the valve to the factory for
service.
8. Place the new body seal (40) into the groove in the
body (when applicable).
9. Install the seat (5) into the insert (2).
10. Insert Styles:
A. Bolted Insert:
With the valve in the closed position, replace the insert
and seat together, using the insert screws. Tighten the
screws uniformly. Torque valves are given in (Table
2). Open the valve and retorque the insert screws per
(Table 2). Take care not to damage the sealing edge of
the disc. Close the valve.
B. Snap-In Insert:
Place the insert spring (77) into the groove in the body,
opposite the positive stop (See Figure 8). Lightly tap
one end of the spring into the body groove. Be sure the
spring is positioned snugly into the groove.
TABLE 2
Insert Screw Torque Table (FT•LBS Unless Otherwise Specield)
Screw Size Torque Carbon Steel
FT•LBS (N•m) FT•LBS N•m
#10 50 IN•LBS (6) 23 IN•LBS (3)
1/4” 14 (19) 6 (8)
5/16” 30 (41) 11 (15)
3/8” 50 (68) 20 (27)
7/16” 80 (109) 30 (41)
1/2” 120 (163) 40 (55)
TABLE 3
Cover Plate Screw Torque Table
Screw Size Torque – FT•LBS (N•m)
3/8” 35 (48)
1/2” 80 (109)
9/16” 110 (149)
5/8” 180 (244)
3/4” 270 (366)
Lightly tap the other end of the spring into the groove.
Make sure that the ends of the spring are embedded into
the body groove to prevent spring movement. With the
seat assembled into the insert and the disc slightly open,
install the assembly into the body such that it is angled
into the body to engage the insert spring. Once the insert
spring is engaged, “pop” the opposite side of the insert into
the body by lightly tapping the insert with a block of wood
and a hammer. Close the valve.
11. Set the handle or actuator stops as described in the
SETTING HANDLE STOP Section or MOUNTING
INSTRUCTION Section. After installation of a new seat,
torque will be higher for a few cycles.
4.5 Seat Replacement Fire-Tite Valves
1. After removing the valve from the pipeline, place it on
a bench and cycle it open. Take care not to damage the
sealing edge of the valve disc.
2. Insert Styles:
A. Bolted Insert:
Remove the insert screws (21) and the insert (2). If the
insert does not lift out easily, tap it out from the shaft
side using a wooden or plastic rod and a hammer. Do
not strike the valve directly with a hammer.
B. Snap-In Insert:
Using a wooden or plastic rod and hammer, drive
the insert out of the body from the shaft side. The rod
should be placed on either side of the positive stop in
the body. Do not strike the valve directly with a hammer.
NOTE: Removal of the insert often results in damage to the
seat being replaced.
3. Remove the seat (5) and discard. Remove the body seal
(40) from the insert and body.

77
2
21
2
5
40
IMO 1/18
IMO-308 EN 9
4. Carefully clean the gasketing surfaces with a suitable
solvent. They should be free of all grooves and
scratches. If deep scratches are present, polish or repair
is required.
5. Clean the valve and deburr the insert.
6. Carefully clean and polish the disc. It should be free
from all grooves and scratches.
7. If the disc is slightly damaged, it may be possible to
smooth the sealing surface with crocus cloth, a ne
stone, or the equivalent. If deep scratches are present,
replace disc or return the valve to the factory for
service.
8. Cycle the valve closed.
9. Abodyseal(40)isrequiredbetweentheseattailandbody
as shown in (Figure 10). The valve uses a graphite
type gasket. This is installed in accordance with the
following steps:
a. IMPORTANT: Exercise care at all times not to
damage the gasket. A break may cause the gasket
to leak.
b. The bottom surface of the insert is to be free of all
foreign particles. Clean thoroughly with suitable
solvent.
c. Apply the gasket to the body, and if a lug style,
take care to align the holes in the gasket with the
insert screw holes.
10. Verify that the disc is in the level position. Install new
seat and insert (See Figure 9 & 10). For bolted inserts,
install the insert screws, and tighten them uniformly.
Torque values are given in (Table 1). Whenever
possible, open the valve and retorque the insert screws
per (Table 2). Take care not to damage the sealing
edge of the disc. Close the valve. For snap-in inserts,
place the retaining spring into the groove in the body,
opposite the positive stop (See Figure 8). The tips
of the spring should be toward the insert side of the
valve. Lightly tap one end of the spring into the body
groove. Be sure the spring is positioned snugly into the
groove. Lightly tap the other end of the spring into the
groove. Make sure the tips of the spring are embedded
into the body groove to prevent spring movement.
With the seat assembled into the insert, and the disc
slightly open, install the assembly into the body, such
that it is angled into the body to engage the retaining
spring. Once the retaining spring is engaged, “pop”
the opposite side of the insert into the body by lightly
tapping the insert with a block of wood and a hammer.
11. Set the actuator stops as described in the ACTUATOR
MOUNTING INSTRUCTIONS Section. Do not install and
tighten anges on a newly reseated valve until the
actuator stops are properly set and the valve is fully
closed. Incorrect disc positioning may cause damage
to a new seat when the valve is compressed between
anges for the rst time. NOTE: After installation of a
new seat, torque will be higher for a few cycles.
4.6 Shaft Seal Replacement
Numbers in ( ) refer to items shown in (Figure 15).
NOTE: See IMO-317 for live loaded shaft seals.
CAUTION: Read the WARNINGS before proceeding.
1. Remove the handle or actuator coupling.
2. Remove the nuts (15) from above the compression
plate (10). Remove the compression plate (10). The
studs (14) do not have to be removed.
Figure 10
REFER TO
FIGURE 5 FOR
COMPLETE VALVE
Disc in
Level Position
Body
Seal
SNAPIN INSERT
BOLTED INSERT
BOLTED INSERT
SNAPIN INSERT
Seat
Insert
Figure 9

IMO 1/18
10 IMO-308 EN
3. Remove C-shaped retainer ring (47) from the shaft.
4. Remove the compression ring (9).
5. Remove the old shaft seal (8) segments. Do not score
the shaft or body bore!
6. The spacer (7) need not be removed for shaft seal
replacement.
7. Replace the old shaft seal with a new shaft seal. NOTE:
If the seal is of the PTFE V-ring type, keep the seal
rings stacked in the same order as removed from kit.
Note the orientation in (Figure 15).This orientation is
preferred for all applications, including vacuum.
8. Reinstall the compression ring (9), the retainer ring
(47), the compression plate (10), the nuts (15). NOTE:
If the compression ring initially sits too high to install
the retainer ring it may be necessary to precompress
the shaft seals somewhat. In that case, install the
compression plate and tighten the nuts enough
to accomplish the precompression. Remove the
compression plate to install the retainer ring and then
complete the reassembly.
9. Close the valve.
10. With the valve closed, tighten the nuts (15) on
the compression plate evenly until the packing is
adequately compressed to prevent leakage. This
should require tightening the nuts approximately 1-1/2
to 2 full turns after they have both come into contact
with the compression plate.
4.7 Valve Disassembly
Numbers in ( ) refer to items shown in (Figures 15 & 15A).
NOTE: If complete disassembly becomes necessary,
replacement of seats and all seals is recommended.
1. Place the valve on a bench or other suitable working
space.
2. If the seat is to be replaced or removed, follow Steps 2,
3, 4 and 5 in the SEAT REPLACEMENT Section. NOTE:
It is good practice to replace the seat, shaft and body
seals and bearings any time a valve is disassembled.
3. Remove the shaft seal compression hardware
as detailed in Steps 1-4 in the SHAFT SEAL
REPLACEMENT Section. The seal material itself can be
more easily removed after the shaft has been removed
from the valve.
4. Remove the disc pin welds by grinding or machining o
the welds. Drive out the pins opposite the installation
direction shown in (Figure 15).
5. Remove screws (55) and cover plate (53), and remove
gasket (54).
6. Remove the shaft (4). NOTE: When removing the shaft
and freeing the disc, be careful not to scratch the
sealing surface of the disc.
7. Remove the disc (3) and upper and lower thrust
bearings (64).
8. Remove the top bearing (6) either through the top of
the valve or the waterway.
9. Remove the bottom bearing (6).
4.8 Checking Parts
1. Clean all disassembled parts.
2. Check the shaft (4) and disc (3) for damage. Pay
particular attention to the sealing areas.
3. Check all sealing and gasket surfaces of the body (1)
and insert (2).
4. Replace any damaged parts.
NOTE: When ordering spare parts, always include the
following information:
a. Valve catalog code from Identication plate,
b. If the valve is serialized – the serial number
(stamped on the valve body),
c. From Figure 15, the ballooned part number, part
name and quantity required.
4.9 Valve Assembly
Numbers in ( ) refer to items shown in (Figure 15).
1. Clean all valve components.
2. Inspect all components for damage before assembling
the valve. Look for damage to the sealing areas on the
disc, shaft, and body, and for wear in the bearing areas.
3. Carefully clean and polish the disc sealing surface. It
should be free from all grooves and scratches.
4. If the disc is slightly damaged, it may be possible to
smooth the sealing surface with crocus cloth, a ne stone,
or the equivalent. If deep scratches are present, replace
the disc or return the valve to the factory for service.
5. Install the bearings (6) into the body bores.
6. To ease assembly of the shaft into the disc, it may be
necessary to coat the shaft and the disc bore lightly
with a lubricant compatible with the media to be
handled by the valve.
7. Slide the shaft through the top bearing and engage
the top thrust bearing (64). With the two pin holes

IMO 1/18
IMO-308 EN 11
toward the bonnet, place the disc in the waterway and
slide the shaft through the shaft bore in the disc. Place
the lower thrust bearing (64) below the disc, slide the
shaft through and into the lower shaft bearing (6). Use
caution to prevent damage to the shaft bearings and
disc sealing surface.
8. Insert the disc pins (13), as shown in (Figure 15), and
drive them into place. The pins must be driven so that
both pins are the same depth within 1/16” (1.56 mm).
When they are correctly installed the drive shaft will
be as shown in (Figures 2 and 3). Weld both ends of
the pins, small end rst, grounding the shaft only (body
on blocks of wood). After the disc cools, clean the
welds with a wire brush. CAUTION: Use care to keep
contamination out of the valve.
9. Install the upper bearing spacer (41) when applicable,
the spacer (7) with chamfered side toward disc, the shaft
seal (8), the compression ring (9) and the retainer ring
(47). If the shaft seal is of the PTFE V-ring type, be certain
that it is installed in the orientation shown in (Figure 15).
10. If the studs (14) have been removed from the valve,
reinstall them in the holes shown in (Figure 5), using
LOCTITE® or other locking compound to prevent
vibration loosening. Stud protrusion should be 2” (50.8
mm) for the 3”, 4”, 6” and 8” (DN 80, 100, 150 and 200)
valves and 2-1/4” (57.15 mm) for the 10” and 12” (DN
250 and 300) valves.
11. Install new gasket (54), and secure cover plate to valve
body using screws (55). To ensure even gasket loading
tighten screws, in an alternating sequence to torque in
(Table 3).
12. If the handle ratchet plate has been removed from the
valve, reinstall it in the orientation shown in (Figure
12). Install lock washers and screws in the two bonnet
holes. Do not tighten the screws until the stops are set.
(See SETTING HANDLE STOP Section or ACTUATOR
MOUNTING INSTRUCTIONS Section.)
13. Place the compression plate (10) over the shaft (4) and
studs (14). Install the nuts (15), but do not tighten.
14. Cycle the valve fully closed. Install new unused seat and
body seal. See the SEAT REPLACEMENT Section for
details.
15. With the valve still closed, tighten the nuts (15) on
the compression plate evenly until the shaft seals
are adequately compressed to prevent leakage. This
should require tightening the nuts approximately 1-1/2
to 2 full turns after they have both come into contact
with the compression plate.
16. Set the handle or actuator stops as described in the
SETTING HANDLE STOP Section or ACTUATOR
MOUNTING INSTRUCTIONS Section. Tighten the
screws holding the ratchet plate.
4.10 Testing the Valve
WARNING:
WHEN PRESSURE TESTING, EXERCISE CAUTION AND MAKE SURE
ALL EQUIPMENT USED IS IN GOOD WORKING CONDITION AND
APPROPRIATE FOR THE INTENDED PRESSURE.
Should it become necessary to perform a leak test of the
valve prior to its installation in the pipeline, follow the
procedure outlined below.
1. In the following test, suitable gaskets are required
between the faces of the valve and the test hardware.
2. Before pressurizing the valve be sure all actuator
linkage fasteners are tight, and that the power or
pressure is applied to the actuator to maintain the
valve in the closed position. The oset design on the
valve may cause it to rotate when the test pressure is
applied to one side of the disc.
3. The valve should be installed between anges or
in a testing apparatus. If anges are used, refer to
INSTALLATION Section. If a testing device other than
anges is used, the clamping force of the device must
be comparable with ange bolt loads on the valve.
4. Slightly open the valve. Verify that you do not have a seal
between the seat and the disc. Exercise caution when
cycling a valve in the test apparatus to avoid possible
disc damage from the disc striking the test xture.
5. Cap the downstream vent and apply 100 psi (6.9 bar) to
the valve. Check the shaft seals, and ange gaskets for
leakage. This can be done by applying a liquid mixture
of soap and water at all seal joints and watching for
bubbles.
IMPORTANT: If leakage is detected between the valve and
anges STOP IMMEDIATELY. Mark the area of leakage.
Vent the valve, and when it has returned to 0 psi (0 bar),
retighten the ange bolts in the area. Repressurize the valve
checking the gasket again. If leakage persists, disassemble
and inspect for damage.
6. If leakage is detected at the shaft seals, tighten the
bonnet nuts only enough to stop the leak.
7. Vent the valve, and when it has returned to 0 psi (0 bar),
cycle the valve closed.
8. Attach a small tube or hose to the downstream ange
(shaft side of the valve).
9. Be sure power/pressure is still applied to the actuator.
Pressurize the upstream ange (insert side of valve) to
100 psi (6.9 bar). Check for leakage passing through the
free end of the tube/hose.
10. If leakage is detected, vent the valve and make an
actuator close-stop adjustment as described in the
appropriate Jamesbury actuator IMO, listed in Table 4.

IMO 1/18
12 IMO-308 EN
11. Repressurize the valve and check the leakage. If valve
still leaks, repeat step 10. If leakage cannot be stopped,
adjust the actuator stop so that leakage is minimized.
12. Rebuilt valves may have some minor leakage due to
damage to the disc. With the valve still pressurized,
insert the free end of the tube/hose into a beaker of
water and check for bubbles. In the absence of other
test standards, observe leakage after it has reached a
stable condition. Because of the volume of air that must
be exhausted from a cycled valve, it may be necessary
to wait several minutes for the leakage to stabilize or
stop. One bubble per inch (25.4 mm) of valve diameter
per minute may be considered acceptable for rebuilt
soft seated or Fire-Tite valves.
5. MANUAL HANDLES
5.1 General
1. Depressurize the line.
2. 2-1/2” thru 6” (DN 65 thru 150) Valves - To ensure
proper handle/shaft engagement, the handle must be
mounted on the shaft such that it rests on the bottom
of the shaft blade (See Figure 11).
3. 8”, 10” and 12” (DN 200, 250, and 300) Valves - Handles
for these valves are of solid cast construction. Adjusting
these handles along the blade to assure proper ratchet
plate engagement is permitted. NOTE: Handles not
available on square drives.
5.2 Change of Handle Quadrant
If it is necessary to remount the handle 180 degrees from its
standard direction (See Figure 12).
1. Depressurize the line. Remove the handle, hex head
cap screws (H6) and lockwashers (H7). Do not remove
the studs (14), nuts (15), or compression plate (10).
2. Lift the ratchet plate up and rotate it 180 degrees. Do not
turn it upside down.
3. Reinstall all the components which were just removed.
Do not tighten the ratchet plate fasteners until the
plate has been properly adjusted as described below
in the SETTING HANDLE STOP Section. If the valve is
not installed in the line, do not install it until the ratchet
plate is properly adjusted.
5.3 Setting Handle Stop
1. It is recommended that the valve be out of the pipeline
for proper adjustment. If this is not possible, valve must
be depressurized before adjustment is made.
2. Loosen the two hex head cap screws (H6) clamping the
ratchet plate to the valve.
3. Close the valve until the disc is parallel with the ange
faces within 1/32”(.79 mm). Do not over close the valve,
so that the disc is in contact with the positive stop in
the body.
4. If the handle (H1 in Figure 8-1) has been removed
from the valve, reinstall it on the shaft drive blade and
tighten. Cast handles use a screw (H3) and nut (H5).
Fabricated handles use only a set screw (H3). With the
handle locking tab in the last (closed) notch of the
ratchet plate, rotate the ratchet plate clockwise (when
viewed from above the handle) until it is stopped
by the locking tab. The disc/handle assembly is now
trapped between the disc stop in the body and the
ratchet plate.
5. Tighten the two screws (H6) holding the ratchet plate.
6. ACTUATOR
WARNING:
BEFORE INSTALLING THE VALVE AND ACTUATOR, BE SURE THAT
THE INDICATOR POINTER ON TOP OF THE ACTUATOR IS CORRECTLY
INDICATING THE VALVE POSITION. FAILURE TO ASSEMBLE THESE
PRODUCTS TO INDICATE CORRECT VALVE POSITION COULD RESULT
IN DAMAGE OR PERSONAL INJURY.
Caution: When installing a linkage or servicing a valve/
actuator assembly, the best practice is to remove the entire
assembly from service.
Figure 12
Figure 11
H1
H6
H2
H7
H3
HANDLE SUBASSEMBLY

IMO 1/18
IMO-308 EN 13
Caution: An actuator should be remounted on the
valve from which it was removed. The actuator must be
readjusted for proper open and close position each time it
is remounted.
Caution: The linkage has been designed to support the
weight of the Jamesbury actuators and recommended
accessories. Use of this linkage to support additional
equipment such as people, ladders, etc. may result in the
failure of the linkage, valve or actuator and may cause
personal injury.
WARNING:
WHEN MOUNTING THE ACTUATOR MAKE SURE THAT THE VALVE
AND ACTUATOR ARE BOTH IN THE SAME POSITION. MOUNTING AN
OPEN ACTUATOR TO A CLOSED VALVE MAY RESULT IN VALVE STEM
DAMAGE.
NOTE: When a single-acting STMS pneumatic spring-return
actuator is mounted to a Wafer-Sphere valve, it can be
mounted only in the spring-to-close mode (air-to-open).
6.1 Actuator Mounting Instructions
1. When a spring-return actuator is being mounted, the
valve should be in the closed position for spring-to-close
operation or in the open position for the spring-to-open
operation. When an electric or double-acting pneumatic
actuator is being mounted, the valve position should
correspond to the indicated actuator position.
2. Assemble bracket to actuator as shown in (Figure 13).
Tighten to torque listed in (Table 5).
3. Place the coupling onto the valve stem. If the valve has
a two-piece “no-play” bolted coupling, assemble the
coupling loosely on the valve stem. Use socket head
cap screws and lock nuts (See Figure 14).
4. Lower actuator and bracket onto valve while engaging
actuator stem driver into coupling. Tighten screws just
enough to rmly mate bracket to valve. This should
allow bracket to shift, allowing the coupling to align
the valve and actuator shafts (See Figure 16, Step 3A.)
TABLE 4
Actuator IMO
Quadra-Powr® IMO-31, 32
ST-50 IMO-22
ST-60, 90, 115, 17SMS IMO-23
ST-200/400 IMO-26
ST-600/1200 IMO-24, 38
ST160, 240, 290, 440MS IMO-27, 39
ST-1800 IMO-506
Manual Gears IMO-63
SP IMO-512
BC, B1C 5 BC 70-A
BJ, B1J 5 BJ 70-A
EU Series IMO-515
ER Series IMO-516
5. Tighten the no-play coupling screws to torques shown in
(Figure 16, Step 3B). Use alternating sequence shown.
6. Cycle actuator. See actuator instructions.
7. Fully tighten the screws holding the bracket to the
valve, as shown in (Figure 16, Step 3C).
8. Recheck no-play coupling screw torques, using the
torques in (Figure 16, Step 3B). Use alternating
sequence shown.
9. Adjust the actuator travel stops as described in the
actuator instructions to these proper valve open and
closed positions:
Valve Open:
Disc face (or shaft blade) perpendicular with the ange face.
Valve Closed:
Disc face parallel to ange face within 1/32”(.79 mm).
6.2 Direct Drive Mounting
Follow instructions per Paragraph 6.1 except for coupling
assembly. (See Figure 17)
Figure 13
Figure 14
Place Coupling On Stem.
Screws of no-play
coupling to face in line
with pipe with the valve
closed.
Tighten sequentially.

IMO 1/18
14 IMO-308 EN
7. REPAIR KITS
Standard repair kits are listed in (Tables 2). When ordering
repair kits for your valve refer to Section 1.7, Valve Markings
and check area “3” on your valve’s identication plate to
determine the correct seat material for your valve.
8. SERVICE / SPARE PART
We recommend that valves be directed to our service
centers for maintenance. The service centers are equipped
to provide rapid turn-around at a reasonable cost and oer
new valve warranty with all reconditioned valves.
NOTE: When sending goods to the service center for
repair, do not disassemble them. Clean the valve carefully
and ush the valve internals. Include the material safety
datasheet(s) (MSDS) for all media owing through the
valve. Valves sent to the service center without MSDS
datasheet(s) will not be accepted.
For further information on spare parts and service or
assistance visit our web-site at www.metso.com/valves.
NOTE: When ordering spare parts, always include the
following information:
a. Valve catalog code from identication plate,
b. If the valve is serialized – the serial number (from
identication plate)
c. From Figure 15, the ballooned part number, part
name and quantity required.

40
2
21
5
1
47
9
10
15
41
7
8
4
18
13
5
6
64
1
14
17
44
64
3
77
2
6
IMO 1/18
IMO-308 EN 15
EXPLODED VIEW AND PARTS LIST
Valves Without Cover Plates
DIRECTION OF SEALS 8
Graphite
FIRETITE
TEFLON®
Standard
PARTS LIST
ITEM PART NAME QTY
1 Body 1
2 Insert 1
3 Disc 1
4 Shaft 1
5+Seat 1
6 Shaft Bearing 2
7 Spacer 1
8+Shaft Seal 1
9 Compression Ring 1
10 Compression Plate 1
13 Disc Pin 2
14 Stud 2
15 Nut 2
17 Nameplate 1
18 Drive Screw 2
21 Cap Screw **
40+Body Seal (2.5”, 3”, 4” [DN 65, 80,
100] 815L & 830L Only)
1
41 Top Bearing Spacer 1
44 Paper Tag 1
47 Retaining Ring 1
64 Thrust Bearing 2
77+Insert Spring (3” - 12”
[DN 80 - 300] Wafer Style Only)
1
** Cap Screw quantities vary by valve, size and
style
+ Parts contained in repair kit
Chamfer
side down
Direction of Installation
Toward Stop
Figure 15

2
21
5
1
47
9
10
15
41
7
8
4
18
13
5
6
64
1
14
17
44
64
3
54
2
55
56
21
53
6
IMO 1/18
16 IMO-308 EN
Chamfer
side down
Direction of
Installation
Toward Stop
DIRECTION OF SEALS 8
Graphite
FIRETITE
TEFLON
Standard
EXPLODED VIEW AND PARTS LIST
Valves With Cover Plates
PARTS LIST
ITEM PART NAME QTY
1 Body 1
2 Insert 1
3 Disc 1
4 Shaft 1
5+Seat 1
6 Shaft Bearing 2
7 Spacer 1
8+Shaft Seal 1
9 Compression Ring 1
10 Compression Plate 1
13 Disc Pin #
14 Stud 2
15 Nut 2
17 Nameplate 1
18 Drive Screw 2
21 Cap Screw **
29 Indicator Pointer
(Sqare Drives Only)
1
41 Top Bearing Spacer 1
44 Paper Tag 1
47 Retaining Ring 1
53 Cover Plate 1
54 Gasket 1
55 Hex Head Cap Screw #
56 Lockwasher #
64 Thrust Bearing 2
** Cap Screw quantities vary by valve, size and
style
+Parts contained in repair kit
# Quantities vary by valve size
Figure 15A

IMO 1/18
IMO-308 EN 17
TABLE 5
Bracket Bolting Torques for GR.5 Hex Cap Screws
Torque to Aluminum Body Actuators Torque to Cast/Ductile iron Body Actuators
Bolt Size No Lubrication to Screws
inches FT•LBS N•m FT•LBS N•m
1/4 6 - 8 -
5/16 12 - 16 -
3/8 20 - 27 -
7/16 30 - 45 -
1/2 50 - 67 -
9/16 70 - 100 -
5/8 90 - 135 -
3/4 160 - 225 -
7/8 250 - 335 -
1 360 - 520 -
1-1/8 520 - 700 -
1-1/4 700 - 990 -
M6 - 6.8 - 9.5
M8 - 14.9 - 19.0
M10 - 30 - 38
M12 - 52 - 65
M16 - 122 - 156
M20 - 230 - 305
M30 - 773 - 1062
M36 - 1288 - 1826
Figure 17
Figure 16
STEP 3B
Tighten these to
Screw Size Torque FT•LBS (N•m)
5/16” 25 34
3/8” 40 54
1/2” 90 122
5/8” 165 224
STEP 3A
Tighten these until bracket
sits firmly on valve
STEP 3C
Tighten these to
Screw Size Torque FT•LBS (N•m)
3/8” 30 41
1/2” 75 102
3/4” 230 312
NO PLAY COUPLING

IMO 1/18
18 IMO-308 EN
WAFER-SPHERE REPAIR KITS
MODEL C
Size Soft Seat FIRE-TITE
Wafer Lug Wafer Lug
2-1/2” (DN 65) 815
2-1/2” (DN 65) 830
RKW-470
RKW-470
RKW-471
RKW-471
O/A
O/A
O/A
O/A
3” (DN 80) 815
3” (DN 80) 830
RKW-352
RKW-352
RKW-358
RKW-358
RKW-364
RKW-364
RKW-370
RKW-370
4” (DN 100) 815
4” (DN 100) 830”
RKW-353
RKW-353
RKW-359
RKW-359
RKW-365
RKW-365
RKW-371
RKW-371
5” (DN 125) 815 RKW-468 RKW-469 RKW-472 RKW-473
6” (DN 150) 815
6” (DN 150) 830
RKW-354
RKW-405
RKW-360
RKW-409
RKW-366
RKW-413
RKW-372
RKW-417
8” (DN 200) 815
8” (DN 200) 830
RKW-355
RKW-406
RKW-361
RKW-410
RKW-367
RKW-414
RKW-373
RKW-418
10” (DN 250) 815
10” (DN 250) 830
RKW-356
RKW-407
RKW-362
RKW-411
RKW-368
RKW-415
RKW-374
RKW-419
12” (DN 300) 815
12” (DN 300) 830
RKW-357
RKW-408
RKW-363
RKW-412
RKW-369
RKW-416
RKW-375
RKW-420
14” (DN 350) 815
14” (DN 350) 830
RKW-678
RKW-673
RKW-678
RKW-673
RKW-663
RKW-668
RKW-663
RKW-668
16” (DN 400) 815
16” (DN 400) 830
RKW-660
RKW-674
RKW-660
RKW-674
RKW-664
RKW-669
RKW-664
RKW-669
18” (DN 450) 815
18” (DN 450) 830
RKW-661
RKW-675
RKW-661
RKW-675
RKW-665
RKW-670
RKW-665
RKW-670
20” (DN 500) 815
20” (DN 500) 830
RKW-662
RKW-676
RKW-662
RKW-676
RKW-666
RKW-671
RKW-666
RKW-671
24” (DN 600) 815
24” (DN 600) 830
RKW-334
RKW-677
RKW-334
RKW-677
RKW-667
RKW-672
RKW-667
RKW-672
OA = ON APPLICATION

IMO 1/18
IMO-308 EN 19
123456789
3 815 W - 11 22 36 XZ QY
JAMESBURY SERIES 815 AND 830 WAFER-SPHERE VALVES
WAARSCHUWING:
As the use of the valve is application specic, a number of factors should be taken into account when selecting a valve for a
given application. Therefore, some of the situations in which the valves are used are outside the scope of this manual. If you
have any questions concerning the use, application or compatibility of the valve with the intended service, contact Metso
for more information.
1. sign VALVE SIZE ( inch / mm )
INCHES 2 1/2, 3, 4, 6, 8, 10, 12, 14, 16, 18, 20, 24
DN 65, 80, 100, 150, 200, 250, 300, 350, 400, 450, 500, 600
2. sign VALVE SERIES & STYLE
815 Standard ANSI Class 150
F815 Fire-Tite ANSI Class 150
830 Standard ANSI Class 300
F830 Fire-Tite ANSI Class 300
860 Standard ANSI Class 600
F860 Fire-Tite ANSI Class 600
3. sign BODY STYLE
WWafer
LSingle-ange Lugged
4. sign CONSTRUCTION / SPECIAL SERVICE
-Standard (no entry)
CChlorine
NNACE MR0103-2003
OOxygen
HHard-coated Disc
HV High Vacuum
HVC High Vacuum Certied
DDouple Packing
DL Douple Packing with Monitoring Port
5. sign SEAT TYPE
11 Standard (non-Fire-Tite)
31 Fire-Tite
6. sign BODY MATERIAL
22 Carbon Steel (WCB)
35 Alloy 20 (CN7M)
36 Stainless Steel (CF8M)
37 Stainless Steel (CG8M)
71 Monel® (M-35-1)
73 Hastelloy® C (CW-12MW)
Other materials available on application.
7. sign DISC AND SHAFT MATERIAL *
35 Alloy 20 disc and shaft
36 316 Stainless Steel disc and shaft
37 317 Stainless Steel disc and shaft
71 Monel disc and shaft
73 Hastelloy C disc and shaft
HB 316 Stainless Steel disc, 17-4 PH shaft
00 Same as body material
*Other materials available on application
8. sign SEAT AND SEAL MATERIAL
STANDARD
XZ Xtreme® seat & carbon-lled enhanced PTFE seal
TT PTFE seat and seal
MT Filled PTFE seat, PTFE seal
UU PEEK/Graphite/Graphite
Fire-Tite
AE PTFE/ Stainless steel seat, graphite seal
AF PTFE/Alloy-20 seat, graphite seal
AH PTFE/Monel seat, graphite seal
XE Xtreme/Stainless steel seat, graphite seal
XF Xtreme/Alloy-20 seat, graphite seal
XH Xtreme/Monel seat, graphite seal
9. sign Modier Code
-Standard
QY Live-loaded packing
MM High Cycle Construction
Hastelloy® is a registered trademark of Haynes International Inc.
Monel® is a registered trademark of Special Metals Corporation.

Subject to change without prior notice.
Metso Corporation
Töölönlahdenkatu 2, PO Box 1220, 00100 Helsinki, Finland
Tel. [phone]
http://contact.metso.com/
Neles Finland Inc.
Vanha Porvoontie 229, P. O. Box 304, FI-01301 Vantaa, Finland.
Tel. [phone]. Fax [phone]
www.metso.com/valves
20 IMO-308 EN