NELDISC®
Metal seated high performance
triple eccentric disc valve
Series L1 and L2
Installation, Maintenance and Operating Instructions
2 L1 71 en • 10/2017
2 2 L1 71 en
1 GENERAL................................................................. 3
1.1 Scope of the manual ...............................................3
1.2 Valve description ......................................................3
1.3 Valve markings ..........................................................3
1.4 Technical specifications .........................................3
1.5 Valve approvals .........................................................3
1.6 CE marking..................................................................3
1.7 Recycling and disposal ...........................................3
1.8 Safety precautions ...................................................4
2 TRANSPORTATION, RECEPTION AND
STORAGE................................................................. 4
3 INSTALLATION .......................................................4
3.1 General .........................................................................4
3.2 Mounting into the pipeline...................................4
3.3 Actuator .......................................................................7
4 COMMISSIONING ................................................... 7
5 MAINTENANCE .......................................................7
5.1 Maintenance general ..........................................7
5.2 Removing the valve from the pipeline ............7
5.3 Replacing the gland packing ...............................8
5.4 Valve leakage .............................................................8
5.5 Replacing the seat ring ..........................................9
5.6 Replacing the disc, shafts and bearings...........9
5.7 Assembling the valve........................................... 10
6 DETACHING AND MOUNTING THE ACTUATOR..11
6.1 General ..................................................................... 11
6.2 Detaching the actuator ......................................11
6.3 Mounting the actuator onto the valve ..........11
6.4 Stop screw adjustment........................................11
7 TOOLS ................................................................... 13
8 ORDERING SPARE PARTS.....................................13
9 EXPLODED VIEW AND PARTS LIST......................15
10 DIMENSIONS AND WEIGHTS .............................. 16
11 TYPE CODE............................................................20
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!
Subject to change without notice.
All trademarks are property of their respective owners.
This product meets the requirements set by the Customs Union of the Republic of Belarus,
the Republic of Kazakhstan and the Russian Federation.
2 L1 71 en 3
BODY
TRIM
SHAFT
SEAT
TYPE
RATING
No.
t max.
t min.
ps
ATTENTION: READ INSTRUCTIONS BEFORE INSTALLATION OR SER VICING. CONTACT METSO AUTOMATION FOR COPY.
Made by Metso Flow Control
XXXX
(1) (9)(8)(6)(5)(3)
(2) (4) (7)
(10)
1 GENERAL
1.1 Scope of the manual
This installation, operation and maintenance manual provides essential information on L1 and L2 series Neldisc® triple eccentric disc valves. The actuators and instrumentation
to be used with L1 and L2 series valves are also discussed
briefly. Refer to the separate actuator and control equipment instruction manuals for further information.
NOTE:
Selection and use of the valve in a specific application
requires close consideration of detailed aspects. Due to
the nature of the product, this manual cannot cover all the
individual situations that may occur when installing, using
or servicing the valve.
If you are uncertain about use of the valve or its suitability
for your intended purpose, please contact Metso for more
information.
For valves in oxygen service, please see also the separate
installation, maintenance and operating instructions for
oxygen service (see Metso document id:10O270EN.pdf)
1.2 Valve description
Neldisc series L1 is a wafer type and series L2 a lug type triple eccentric disc valve.
The disc is elliptical and has a double eccentric mounting.
When the valve is closed, the elliptical disc at the major axis
displaces the seat ring outward, causing the seat ring to
contact the disc at the minor axis. When the valve is
opened, the contact is released and the seat ring returns to
its original circular shape (see Fig. 1).
The disc is fitted to the shafts with pins and there are no
holes through the disc.
Construction details of individual valves are included in the
type code shown on the valve identification plate. To interpret the type code, please refer to Section 11.
The valve operates both in control and shut-off applications.
1.3 Valve markings
Body markings are cast on the body. The valve also has an
identification plate attached to it (see Fig. 2).
Fig. 2. Identification plate
Identification plate marking:
1. Body material
2. Shaft material
3. Trim material
4. Seat material
5. Maximum operating temperature
6. Minimum operating temperature
7. Maximum shut-off pressure differential
8. Type designation
9. Valve manufacturing parts list no.
10. Pressure class
1.4 Technical specifications
Type: Full bore, metal seated
triple eccentric disc valve
Pressure class:
Body: L1C, L2C ANSI 150/PN 25
L1D, L2D ANSI 300/PN 40
Trim: L1C, L2C ANSI 150
L1D, L2D ANSI 300
Temperature range: -200... +600 °C
(for ambient temperatures
> 600 °C, please contact the
manufacturer)
Flow direction: Free
Dimensions: See Section 10
Weights: See Section 10
Fig. 1. Construction of a triple eccentric disc valve
1.5 Valve approvals
The valve meets the requirements of BS 6755, Part 2: 1987
and API 607, Third Edition, November 1985 on fire safety.
Valves with codes T or G are TA-Luft approved.
1.6 CE marking
The valve meets the require
tive 2014/68/EU relating to pressure equipment, and has
been marked according to the Directive.
ments of the European Direc-
1.7 Recycling and disposal
Most valve parts can be recycled if sorted according to
material. Most parts have material marking. A material list is
supplied with the valve. In addition, separate recycling and
disposal instructions are available from the manufacturer. A
valve can also be returned to the manufacturer for recycling
and disposal against a fee.
4 2 L1 71 en
1.8 Safety precautions
CAUTION:
Do not exceed the valve performance limitations!
Exceeding the limitations marked on the valve may cause
damage and lead to uncontrolled pressure release.
Damage or personal injury may result.
CAUTION:
Do not dismantle the valve or remove it from the pipeline while the valve is pressurized!
Dismantling or removing a pressurized valve will result in
uncontrolled pressure release. Always isolate the relevant
part of the pipeline, release the pressure from the valve
and remove the medium before dismantling the valve. Be
aware of the type of medium involved. Protect people and
the environment from any harmful or poisonous substances. Make sure that no medium can enter the pipeline
during valve maintenance.
Failure to do this may result in damage or personal injury.
CAUTION:
Beware of the discs cutting 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
device. The position of the disc can also be changed when
moving the valve.
Close and detach the actuator pressure supply pipeline for
valve maintenance.
Failure to do this may result in damage or personal injury.
2 TRANSPORTATION, RECEPTION AND
STORAGE
Check the valve and the accompanying devices for any
damage that may have occurred during transport.
Store the valve carefully before installation, preferably
indoors in a dry place.
Do not take the valve to the intended location and do not
remove the flow port protectors until the valve is installed.
The valve is delivered in the closed position. A valve
equipped with a spring-return actuator is delivered in a
position determined by the spring. During storage the
valve must be lightly closed.
3 INSTALLATION
3.1 General
Remove the flow port protectors and check that the valve is
undamaged and clean inside.
CAUTION:
When handling the valve or the valve package, bear in
mind its weight!
Follow the lifting methods shown in Fig. 3.
CAUTION:
Beware of noise emissions!
The valve may produce noise in the pipeline. The noise
level depends on the application. It can be measured or
calculated using Metso Nelprof computer program.
Observe the relevant work environment regulations on
noise emission.
CAUTION:
Beware of a very cold or hot valve!
The valve body may be very cold or very hot during use.
Protect yourself against cold injuries or burns.
CAUTION:
When handling the valve or the valve package, bear in
mind its weight!
Never lift the valve or valve package by the actuator, positioner, limit switch or their piping.
Valve sizes DN 350 and over are equipped with a lifting
eye bolt.
Place the lifting ropes securely around the valve body (see
Fig. 3).
Damage or personal injury may result from falling parts.
NOTE:
Do not turn the disc more than 90° as this could damage
the seat. The valve is so constructed that the disc operates
only between 0-90°.
Fig. 3. Lifting of the valve
3.2 Mounting into the pipeline
Flush or blow the pipeline carefully before installing the
valve. Foreign particles, such as sand or pieces of welding
electrode, will damage the disc sealing surface and seat.
The valve may be installed in any position and offers tightness in both directions.
Install the valve in the pipeline so that the shaft is horizontal, if possible. However, we do not recommend installing
the valve with the actuator on the underside because dirt in
the pipeline may then enter the body cavity and damage
the gland packing.
If the valve is equipped with a flow balancing trim (type code
S-...), it must be on the downstream side of the valve body.
The valve must be mounted so that the perforated plate will
not collect any impurities in the pipeline (see Fig. 4).
Select flange gaskets according to the operating conditions.
Do not attempt to correct pipeline misalignment by means
of flange bolting.
It may be necessary to firmly support the pipeline to protect the valve from excess stress. Sufficient support will also
reduce pipeline vibration and this ensures proper functioning of the positioner. Do not fasten supports to the flange
bolting or to the actuator.
2 L1 71 en 5
Flow direction B
The recommended
position of the
perforated plate is at
the "top" of the
pipeline, on the
downstream side and
to flow direction B.
In case of sudden shutdown of the energy supply the valve
will open unexpectedly due to pre-stressed spring package.
This may cause significant harm to people and material
around the valve.
In valves with certain nominal sizes some flange bolts do
not pass the valve body. The valve body is thus equipped
with grooves, holes or threads (see Section 3.2.1).
Ensure that the disc can turn to the open position after preliminary tightening of the flange bolts. The actuators of
control valves are usually equipped with position stops
Fig. 4. Position of the flow balancing trim
which usually only allow the disc to open 80°.
It is recommended that the length of any straight pipe
preceding the control valve is at least 2 x pipe diameter.
The flow causes a so-called dynamic torque against the
valve disc which attempts to close the valve. In a pipe
elbow the pressure on the outer edge is higher than on the
inner edge.
When installing the valve immediately after a pipe elbow,
the valve shaft must be directed toward the centre point of
the pipe (see Fig. 5). This is especially important when the
valve is used as a control valve.
Fig. 7. Minimum pipe inside dimensions
The valve shaft of a triple eccentric disc valve mounted after
the centrifugal pump must be perpendicular to the pump
shaft (see Fig. 6).
When thus installed, the valve discs will be more evenly
loaded and vibrations otherwise possible in the intermediate positions will be eliminated.
Table 1. Minimum pipe inside dimensions D/(mm)
Valve size
18 422 400
20 464 443
24 565 536
28 665
30 716
32 762
36 870
40 960
L1CM L1DM
D
Fig. 5. Mounting after a pipe elbow
Fig. 6. Mounting after the centrifugal pump
When mounting the valve it must be in a closed position
and be carefully centred between the pipe flanges so that
the turning disc does not touch the pipe edge or flange
gaskets.
Use caution when installing valve with Spring-to-open
actuator. Valve must be in closed position during installation if the disc exceeds the Face-to-face length. Energy supply for the actuator must be safely fastened and it cannot
suffer damage or break off during the installation.
3.2.1 Mounting options
X Flange bolts pass the neck of the body
UH Unthreaded holes at the neck of the body
SB Stud bolts at the neck of the body (L2 always)
BH Stud bolts at the neck of the body and fraised
holes on the body and flange ring
FH Unthreaded holes at the neck of the body and
fraised holes on the body and flange ring
XF Flange bolts pass the neck of the body and
fraised holes on the body and flange ring
HM Fraised holes on the neck of the body for flange
bolts
— Flange drilling not suitable
Fig. 8. Mounting options
6 2 L1 71 en
Table 2. Mounting options
Valve
Valve
type
ASME
150
ASME
PN 10 PN 16 PN 25 PN 40
300
type
ASME
300
PN 25 PN 40
L1C18 UH — SB SB SB — L1D16 SB BH SB
L1C20 SB SB SB SB SB — L1D18 SB BH SB
L1C24 SB SB SB SB SB — L1D20 SB BH SB
L1C28 SB SB SB SB SB SB L1D24 SB BH SB
L1C30 SB SB — — — — L1D28 SB BH SB
L1C32 SB SB SB SB SB SB L1D30 SB — —
L1C36 SB SB SB SB SB SB L1D36 SB — BH
L1C40 SB SB SB SB SB SB
*) L1C40 can also be drilled acc. to MSS SP-44 42" drilling.
Table 3. Stud bolt dimensions (mm) and quantities per valve, L1 mounting options SB, BH
Class 150 Class 300 PN 10 PN 16 PN 25
Valve ty pe A
L1C18 114 Through bore M24 16 300 8 125 107 85 16 M27 16 350 8 150 132 110 16 M33 16 330 8 140 122 100 16
L1C20 127
L1C24 154
L1C28 229
L1C30 230
L1C32 241
L1C36 241
L1C40 300
L1C40/42 300
Through
Body mounted studs
studs
Thread
QtyL3Qty L L1 L2 S Thread QtyL3Qty L L1 L2 S Thread QtyL3Qty L L1 L2 S Thread QtyL3Qty L L1 L2 S Thread QtyL3Qty L L1 L2 S
1 1/8-8
16 330 8 140 114 93 24
UN
1 1/4-8
16 360 8 150 119 95 28
UN
1 1/4-8
24 450 8 170 130 97 32
UN
1 1/4-8
24 450 8 170 130 95 32
UN
1 1/2-8
24 480 8 180 140 105 32
UN
1 1/2-8
28 490 8 180 145 110 32 2-8UN 28 610 8 240 200 165 32 M30 24 490 8 180 143 110 35 M36 24 510 8 190 153 120 35 M45 24 510 8 190 153 120 35
UN
1 1/2-8
32 600 8 220 170 130 40
UN
1 1/2-8
32 600 8 220 170 130 40
UN
Class 300 PN 40 PN 25
Valve type A
Thread
Through
studs
QtyL3QtyL L1L2 S ThreadQtyL3QtyL L1L2 S ThreadQtyL3QtyL L1L2 S
L1D18 180 1 1/4-8UN 20 400 8 150 113 113 32 M36 16 430 8 170 129 129 36
L1D 20 20 0 1 1/ 4-8U N 20 4 00 8 15 0 104.5 106 38 M39 16 46 0 8 180 132.5 134 40 M33 16 38 0 8 1 40 92 112 30
L1D24 240 1 1/2-8UN 20 490 8 180 125 125 45 M45 16 480 8 170 110 110 50 M36 16 450 8 160 100 100 45
L1D28 250 1 5/8-8UN 24 510 8 180 135 135 42 M45 20 490 8 170 120 120 45 M39 20 470 8 160 110 110 42
L1D30 300 1 3/4-8UN 24 600 8 200 145 145 40
L1D36 360 2-8UN 28 720 8 240 175 175 50 M52 24 630 8 200 135 135 55
Through
Body mounted studs
studs
1 1/4-8
20 370 8 150 132 111 16 M24 16 300 8 125 99 79 24 M30 16 330 8 140 114 93 24 M33 16 330 8 140 114 94 24
UN
1 1/2-8
20 440 8 180 159 135 18 M27 16 360 8 150 119 95 28 M33 16 340 8 140 109 85 28 M36 16 400 8 170 139 115 28
UN
1 5/8-8
24 550 8 220 180 145 32 M27 20 410 8 150 107 75 35 M33 20 430 8 160 117 85 35 M39 20 470 8 180 137 105 35
UN
1 3/4-8
24 570 8 230 190 155 32
UN
1 7/8-8
24 600 8 240 200 165 32 M30 20 480 8 180 137 102 35 M36 20 500 8 190 147 112 35 M45 20 500 8 190 147 112 35
UN
1 5/8-8
28 640 8 240 190 150 40 M33 24 540 8 190 140 100 40 M39 24 560 8 200 150 110 40 M52 24 580 8 210 160 120 40
UN
1 5/8-8
28 640 8 240 190 150 40
UN
Body mounted studs
Through
studs
Through
studs
Body mounted studs
Body mounted studs
Through
studs
Body mounted studs
Through
studs
Through
studs
Body mounted studs
Body mounted studs
Table 4. Stud bolt dimensions (mm) and quantities per valve, L2 mounting option SB
Valve type A
L2C18 152 1 1/8-8UN 32 190 142 88 45 M24 32 280 8 140 122 67 16 M27 32 300 8 160 136 81 22
L2C20 152 1 1/8-8UN 40 180 133 89 45 M24 32 280 8 140 113 69 24 M30 40 180 133 89 45
L2C24 178 1 1/4-8UN 40 190 142 96 46 M27 40 170 122 76 46
L2C28 250 1 1/4-8UN 56 230 178 122 50 M27 48 180 128 75 50 M33 48 190 138 85 50
L2C30 250 1 1/4-8UN 56 230 178 122 50
L2C32 270 1 1/2-8UN 56 270 208 142 60 M30 48 200 138 76 60 M36 48 210 148 86 60
L2C36 241 1 1/2-8UN 64 240 178 144 60 M30 56 170 123 89 45 M36 56 190 133 99 55
L2C40/42 320 1 1/2-8UN 72 270 208 150 60
Valve type A
L2D18 210 1 1/4-8UN 48 200 148 110 50 M36 40 210 153 115 55 M33 40 190 138 100 50
L2D20 230 1 1/4-8UN 48 200 148 120 50 M39 40 210 143 115 65 M33 40 180 128 100 50
L2D24 250 1 1/2-8UN 48 240 174 131 60 M45 40 260 183 140 75 M36 40 210 153 110 55
L2D28 295 1 5/8-8UN 56 260 198 1 55 60 M39 48 210 148 105 60
L2D30 300 1 3/4-8UN 56 270 198 1 60 70
L2D32
L2D36 370 2-8UN 64 310 23 3 175 75
Through studs Body mounted studs
Thread
QtyL3Qty L L1 L2 S QtyL3Qty L L1 L2 S QtyL3Qty L L1 L2 S
Through studs Body mounted studs
Thread
QtyL3Qty L L1 L2 S QtyL3Qty L L1 L2 S QtyL3Qty L L1 L2 S
Class 150 PN10 PN16
Class 300 PN40 PN25
Through studs Body mounted studs
Thread
Throughstuds Body mounted studs
Thread
Through studs Body mounted studs
Thread
Throughstuds Body mounted studs
Thread
Fig. 9. Stud bolt mounting dimensions,
mounting options SB, BH
2 L1 71 en 7
Insulation limit
3.2.2 Valve insulation
If necessary, the valve may be insulated. Insulation must not
continue above the upper level of the valve body, see
Figure 10.
Fig. 10 Insulation of the valve
3.3 Actuator
When installing the actuator on the valve, make sure that
the valve package functions properly. See instructions for
installing in Section 6.
Observe the space needed for removal of the actuator.
The upright position is recommended for the actuator cylinder.
The actuator must not touch the pipeline, because pipeline
vibration may damage it or interfere with its operation.
In some cases, e.g. when a large-size actuator is used or
when the pipeline vibrates heavily, supporting the actuator
is recommended. Please contact Metso’s Automation business for further information.
4 COMMISSIONING
Ensure that no dirt or foreign objects are left inside the
valve or pipeline. Flush the pipeline carefully. Keep the
valve 30-40° open during flushing.
When starting up the pump, ensure that the valve in the
pipeline is closed or, at the very most, 20° open.
A waterhammer, which follows the start-up of high-capacity pumps, creates a torque peak in the disc. This can damage the pin connection between disc and shaft when the
valve is 30-90° open.
The gland packing may leak after long storage. Tighten
both nuts in the packing evenly until the leakage stops.
5 MAINTENANCE
5.1 Maintenance general
CAUTION:
Observe the safety precautions mentioned in Section
1.8 before maintenance!
CAUTION:
When handling the valve or the valve package as a
whole, bear in mind the weight of the valve or the
entire package
CAUTION:
For safety reasons the retaining plates MUST always
be installed acc. to section 5.2.
Although Metso’s Neles valves are designed to work under
severe conditions, proper preventative maintenance can
significantly help to prevent unplanned downtime and in
real terms reduce the total cost of ownership. Metso recommends inspecting the valves at least every five (5) years.
The inspection and maintenance interval depends on the
actual application and process condition.
The inspection and maintenance intervals can be specified
together with your local Metso experts. During this periodic inspection the parts detailed in the Spare Part Set
should be replaced.
Time in storage should be included in the inspection interval.
Maintenance can be performed as presented below. For
maintenance assistance, please contact your local Metso
office.
The part numbers in the text refer to the exploded view and
to the parts list in Section 9, unless otherwise stated.
NOTE:
When sending goods to the manufacturer for repair, do
not disassemble them. Clean the valve carefully and flush
the valve internals.
For safety reasons, inform the manufacturer of the type of
medium used in the valve (include material safety datasheets (MSDS)).
NOTE:
In order to ensure safe and effective operation, always use
original spare parts to make sure that the valve functions
as intended.
NOTE:
For safety reasons, replace pressure retaining bolting if the
threads are damaged, have been heated, stretched or corroded.
5.2 Removing the valve from the pipeline
CAUTION:
Do not dismantle the valve or remove it from the pipeline while the valve is pressurized!
It is generally most convenient to detach the actuator and its
auxiliary devices (see Section 6), before removing the valve
from the pipeline. If the valve package is small or difficult to
access, it may be more practical to remove the entire package
at the same time.
Ensure that the valve is not pressurized and the pipeline is
empty. Ensure that the medium cannot flow into the section
where servicing is to take place. The valve must be in a closed
position when removing.
Support the valve carefully with a hoist. Place ropes carefully
and unscrew the pipe flange bolts. Ensure that the ropes are
positioned correctly (see Fig. 3). Lift valve correctly (see Fig. 3).
8 2 L1 71 en
5.3 Replacing the gland packing
CAUTION:
Do not dismantle the valve or remove it from the pipeline while the valve is pressurized!
PTFE V-rings are used as a standard gland packing and graphite rings for high temperature constructions. The packing construction is live loaded as standard.
The gland packing (20) must be changed if leakage occurs
even after the hex nuts (25) have been tightened as recommended.
Make sure the valve is not pressurized.
Unfasten the nuts (25) and remove the disc spring
(TA-Luft) sets (43), the retaining plates (42) and the
gland (9).
Remove old packing rings (20). Do not damage the sur-
faces of the packing ring counterbore and shaft.
Clean the gland packing and packing ring counter-
bore. Install new set of packings (V-ring or graphite).
Slip the rings onto the shaft. Ensure that there are no
burrs in the keyway groove which could damage the
packing.
Install the gland.
Mount the retaining plates with the text UPSIDE on
top (see Fig. 11).
Table 5. Tightening of gland packing
L1C, L2C L1D, L2D Spring set dia Thread
DN / NPS DN / NPS mm M, UNC
450 / 18 35.5 M14, 1/2 4.0 2.5
500 / 20 35.5 M14, 1/2 4.5 2.5
600 / 24
700 / 28 20 / 500 40 M18, 5/8 5.5 3.5
750 / 30 40 M18, 5/8 5.5 3.5
800 / 32 24 / 600 50 M20, 3/4 6.0 3.5
900 / 36 50 M20, 3/4 6.5 4.0
1000 / 40 28 / 700 56 M24, 1 6.5 5.5
1200 / 48 71 M30, 1 1/4 6.5 6.5
16 / 400,
18 / 450
900 / 36 50 M20, 3/4 6.5 6.0
30 / 750 50 M22, 7/8 6.5 5.0
36 / 900 56
dia
40 M18, 5/8 5.0 3.0
M24, 1
(4 pcs.)
h
1
h
2
disc spring set (44)
packing (20)
V-ring set or
graphite packing
bearing (15)
Compression (h1–h2) mm
Packing ring material
Graphite +
PTFE
6.5 6.0
stud (24)
hexagon nut (25)
retainer plate (42)
gland (9)
PTFE
Fig. 11. Mounting the retaining plate
Mount the disc spring sets.
Place the nuts on the studs.
Pre-compress the gland packing by tightening the
nuts with a tool until the disc springs have value of
compression (h1–h2) as in Table 5.
Carry out 3…5 operation cycles with the valve. Suita-
ble range of movement is about 80 %.
It is not necessary to fully close or open the valve
during the operation.
Unfasten the nuts and disc springs.
Measure the height h1 of the disc springs and use
these values as a basis when defining the final
height of the springs (as compressed condition)
Re-install the disc springs and tighten the nuts with
the tool. Tighten the nuts until the set value of compression (h1–h2) of disc springs is achieved, see
Tab le 5.
Fig. 12. Gland packing
If the leakage still occurs when the valve is pressur-
ized, re-tighten the nuts but don't exceed the values
in the Table 5 by 50 % or do not fully compress the
disc springs.
5.4 Valve leakage
Valve leakage is not always caused by a damaged seat ring or
disc. The reason can also be that the disc is not in the closed
position.
Check the position of the actuator relative to the
valve. The screws may be loose or the bracket damaged.
Check the adjustment in the closed position (see
Section 6.4).
The marking line parallel to the disc on the valve shaft head
shows roughly the closed position of the disc (see Fig. 13).
Pressure chocks can cause loosening of the pin connection
between disc and shaft; consequently the shaft moves
while the disc remains in place and this prevents full closing
of the disc.
If the reason for the leakage does not become apparent
after doing the above, the valve must be disassembled for
replacing the parts.
2 L1 71 en 9
open
close
Check the position between the seat ring and the
disc. The valve closes clockwise (see Fig. 13).
Mount the actuator into the valve. Adjust the closed
position limit and check the open position limit (see
Section 6.4).
5.6 Replacing the disc, shafts and bearings
5.6.1 Disassembling the valve
The pin connection of the disc must be opened by drilling for
changing the disc (3), shafts (11, 12) and bearings (15, 16).
Fig. 13. The contact line between the disc and seat ring
5.5 Replacing the seat ring
CAUTION:
Do not dismantle the valve or remove it from the pipeline while the valve is pressurized!
Ensure that the valve is not pressurized.
Remove the valve from the pipeline. The valve must
be in a closed position during removal.
Follow the lifting methods shown in Section 3.
Remove the clamp ring (2) by untightening the
screws (27).
Remove the old body seal (19) and the seat ring (4).
Change the seat ring if it is damaged.
Clean all the seating surfaces of the body and clamp
ring. Check the surface of the seat ring.
Check also the condition of the disc. A damaged disc
must be changed (see Section 5.6).
Check the condition of the pin connection. Repair it
if necessary (see Section 5.6).
Fig. 14. Mounting the body seal
Mount a new, self-adhesive body seal (19) into the
body. The surface must be clean and free of grease.
Handle the ends of the seal according to Fig. 14.
Spray a thin layer of dry lubricating fluid, e.g.
Molykote 321R or equivalent, into the seat groove,
surfaces of the clamp ring and seat ring.
Centre the seat ring (4) carefully into its groove and
turn the disc to maintain light contact with the seat.
Mount the clamp ring and tighten the screws (27)
lightly.
Turn the disc slightly open and pull it back to set the
seat into the proper position.
Tighten the screws (27) evenly. An unevenly tight-
ened flange may damage the seat ring. The screw
heads must be below the flange surface.
Remove the valve from the pipeline and the actuator
from the valve.
Remove the clamp ring (2) and seat ring (4) accord-
ing to section 5.5.
Set the valve horizontally on a sturdy surface so that
the flat side of the disc lays against the surface, see
Fig. 15.
Fig. 15. Drilling the pins
Drill the holes carefully to the centre of the pins (14).
Choose a drill 0.2-0.5 mm smaller than the diameter
of the pin.
Drill the holes deep, but not enough to reach the
disc.
Pull the pins out.
Dismantle the gland packing according to
Section 5.3.
Detach the screws (26) and the blind flange (10) and
remove the gasket (18).
Place rubber strips or other protection between the
disc edge and the body and remove the shafts (see
Fig. 16).
Remove the bearings (15, 16).
Clean and check all parts carefully.
Fig. 16. Protecting the disc during disassembly and assembly
10 2 L1 71 en
5.7 Assembling the valve
Replace damaged parts with new ones.
Set the disc and the shaft together beforehand. In
case the pin holes have been damaged during
removal of the old pins the holes can be drilled to a
larger pin size. File off any burrs from the shafts.
The bearing material of the standard construction valves is
PTFE-impregnated stainless steel net.
The bearings for the high temperature valves (H-construction) are cobalt alloy bushings which are mounted into the
body together with the shafts.
Mount the bearings into the body (see Fig. 17).
Fig. 17. Mounting the standard bearings
H-construction: Mount the bearing into the shaft. Spray a
thin layer of dry lubricating fluid, e.g. Molykote 321R or
equivalent, into the inside surface of the bushing and the
shaft bearing groove. Press the bushing with a tightening
ring into the shaft bearing groove and fit the shaft with the
bearings carefully into the body through the tightening
ring (see Fig. 18).
NOTE:
Use only pins supplied by the manufacturer!
NOTE:
The pins must be pressed with enough force to deform
them so that the connection will be free from backlash.
Support the disc well in a horizontal position during
mounting of the pins. Push the new pins into the
holes and press them in a press to final form (see Fig.
19). Use a smaller tool than the pin diameter. See
Table 6 for force needed.
Fig. 19. Pressing the pins
Table 6. Pressing the pins, forces
Pin diameter, mm Force, kN Pin diameter, mm Force, kN
54520500
66025780
880301125
10 125 35 1500
12 180 40 2000
15 280 50 3150
Install the gasket (18) and the blind flange (10).
Screws of the blind flange must be tightened evenly.
An unevenly tightened flange will damage the seat.
Install the seat ring. See details in Section 5.5.
Install the body seal (19) and the clamp ring (2). See
details in Section 5.5.
Install the gland packing (see Section 5.3).
Check the contact line between the seat ring and the
disc (see Fig. 13).
Fig. 18. Mounting the H-construction bearings
Place the disc horizontally on a surface so that the flat side
of the disc lays against the surface. Lift the body around the
disc so that the shaft bores are aligned with the bores in the
disc. Protect the disc (see Fig. 16).
Press the shafts into the disc drillings. Align the pin holes.
The shaft (11) position against the disc must be according
to Fig. 13.
2 L1 71 en 11
6 DETACHING AND MOUNTING THE
ACTUATOR
6.1 General
CAUTION:
When handling the valve or the valve package, bear in
mind its weight!
NOTE:
Do not turn the disc more than 90° as this could damage
the seat. The valve is so constructed that the disc operates
only between 0-90°.
6.2 Detaching the actuator
CAUTION:
The actuator cannot be removed from the valve when
the pipeline is under pressure as a result of dynamic
torque!
NOTE:
Before dismantling, carefully observe the position of the
valve with respect to the actuator and positioner/limit
switch so as to ensure that the package can be properly
reassembled.
The actuator is factory-mounted on the valve and the
stroke limit stop screws are adjusted in advance.
Ensure that the pipeline is not pressurized.
Disconnect the actuator from its power source;
detach the air supply pipe and control signal cables
or pipes from their connectors.
Unscrew the bracket screws.
Detach the actuator using a suitable extractor. The
correct tool can be ordered from the manufacturer
(see Fig. 20).
Remove the bracket and coupling, if any.
6.3 Mounting the actuator onto the valve
Turn the valve to the closed position before mount-
ing the actuator.
Clean the shaft and the shaft bore and file off any
burrs which could interfere with mounting. Protect
the joint surfaces from corrosion, e.g. with Cortec VCI
369.
If a bushing is required between the actuator shaft
bore and the valve shaft, mount it first in the actuator shaft bore.
The valve keyway is on the side opposite the flat side
of the disc. The actuator shaft bore has two keyways
set 90° apart.
For double-acting cylinder actuator, B1C, and spring-
return cylinder actuator, B1J (spring-to-close),
choose the keyway which establishes the piston in
its upper position (at the top end of the cylinder)
when the valve is closed.
In the spring-return cylinder actuator B1JA (springtoopen), choose the keyway which establishes the
piston in its lower position when the valve is open.
In valves with manual operation the disc must be
closed by turning the handwheel clockwise.
Check visually that the actuator is correctly posi-
tioned relative to the valve. Tighten all the fastening
screws as tightly as possible.
Adjust the stop screws to the closed position (see
Section 6.4).
The opening angle in a control valve is usually lim-
ited by a bolt to 80°. The opening angle of a shut-off
valve is 90°.
When a shaft extension is required, the sizing of the
shaft extension must be discussed with the valve
manufacturer.
6.4 Stop screw adjustment
Fig. 20. Removing the actuator with an extractor
6.4.1 General
Close the metal seated triple eccentric disc valve by turning
the disc with a torque against the seat. Choose the torque
from Tables 8 and 9 for adjusting the stop screw to the
closed position of the actuator. Try not to exceed the given
values since excessive torque would strain the seat and the
joint between the disc and the shaft. Always readjust the
stop screw after changing the seat and after mounting the
actuator.
6.4.2 Actuators other than tabulated
Close the valve as per the tabulated torque Mc and adjust
the stops accordingly. Note the increased torque created by
the actuator while the valve is closed.
NOTE:
Metso accepts no responsibility for compatibility of actuators not installed by Metso.
12 2 L1 71 en
Stop screw for the closed position
Stop screw for the
open position
Stop screw for the closed position
Stop screw for the
open position
6.4.3 Changing the mounting position
CAUTION:
The actuator must not be removed from the valve in a
pipeline under pressure as a result of dynamic torque!
Always remove the actuator from the valve shaft before
mounting it into another key groove. Readjust the closed
position limit as instructed.
If manually operated, the valve should close when the
handwheel is turned clockwise. In a double-action cylinder,
the piston must be in the upper position of the cylinder
when the valve is closed. In this position the actuator creates maximum torque. Do not turn the disc more than 90°
as this could damage the seat.
6.4.5 Manual operator M
Close the valve as per the tabulated primary torque
M1 (handwheel torque) given in Tables 8 and 9.
Tighten the closed position stop screw until it
touches the linkage, then turn back 1/4 turn and lock
up with Loctite 225.
Fig. 23. Actuator, Series M
6.4.6 Electric operator
Instructions for adjustment are given in a separate leaflet code
D304568, which is available from the manufacturer.
Fig. 21. Changing the mounting position
6.4.4 Double-acting cylinder actuator B1C
Apply the tabulated shut-off pressure Pc to the air
connection at the cylinder base.
With the stop screw removed, check through the air
connection hole that the piston does not touch the
cylinder end. If it does, loosen the bracket screws
and turn the actuator clockwise to increase the
adjusting margin.
Fig. 22. Cylinder actuator, Series B1C
Turn the closed position stop screw until it touches
the piston, then turn back 1/4 turn and lock up. Leak-
proof with Loctite 225 or other non-hardening seal-
ant. The sealant must not flow inside the cylinder.
An extra long screw is needed for opening angles
< 80°.
Fig. 24. Electric operator
6.4.7 Spring-return cylinder actuator B1J
Spring-to-close
Before mounting the cylinder, screw in the closed
position stop screw completely.
The table overleaf indicates *) spring when the
spring-created torque does not exceed the maximum permitted closing torque Mc. Otherwise, apply
the tabulated pressure Pc into the air connection at
the cylinder end against the spring force. The stop
screw cannot be removed when the cylinder is
pressurized! Open the stop screw until it does not
touch the piston.
Turn the closed position stop screw until it touches
the piston, then turn back 1/4 turn and lock up. An
O-ring is used for leakproofing the stop screw.
After adjusting, check the adjusting margin through
the air connection hole. The piston must not touch
the cylinder end. If necessary, increase the margin by
loosening the bracket screws and turning the actuator clockwise.
2 L1 71 en 13
Stop screw for the closed position
Stop screw for the
open position
Stop screw for the closed position
Stop screw for the
open position
An extra long screw is needed for opening angles
<80°.
Fig. 25. Cylinder actuator, Series B1J
6.4.8 Spring-return cylinder actuator B1JA
Spring-to-open
The actuator being unpressurized the valve is open.
Unscrew the close limit stop screw (actuator housing). Apply tabulated shut-off pressure Pc to the air
connection at the cylinder bottom end against the
spring force to close the valve.
Check through the stop screw hole that the piston
rod does not touch the cylinder top end. If it does,
loosen the bracket screws and turn the actuator
clockwise to increase the adjusting margin.
Turn the closed position stop screw until it touches
the piston, then turn back 1/4 turn and lock up. Leakproof with Loctite 225 or other non-hardening sealant. The sealant must not flow inside the cylinder.
An extra long screw is needed for opening angles
<80°.
7 TOOLS
No special tools are needed for servicing the valve.
However, we recommend an extractor for removing the
actuator from the valve. The tool can be ordered from the
manufacturer.
Extractor tools (Actuator Series B1C/B1J)
Product: ID:
B1C/B1J 6 303821
B1C 8-11 / B1J 8-10 8546-1
B1C 12-17 / B1J 12-16 8546-2
B1C/B1J 20 8546-3
B1C/B1J 25 8546-4
B1C/B1J 32 8546-5
B1C 40 / B1J 322 8546-6
B1C 50 8546-7
B1C 502 8546-8
8 ORDERING SPARE PARTS
When ordering spare parts, always include the following
information:
type code, sales order number, serial number
(stamped on a valve body)
number of the parts list, part number, name of the
part and quantity required
This information can be found from the identification plate
or documents.
Fig. 26. Cylinder actuator, Series B1JA
14 2 L1 71 en
Table 7. Series L1C, L2C closing torques
DN
SIZE
Mc BC and BJ
SIZE
BC
pc
BJ
pc
BJA
**)
pc
BJKpcBJKA
(Nm) (lbf ft) (bar) (psi) (bar) (psi) (bar) (psi) (bar) (psi) (bar) (psi) (bar) (psi) (bar) (psi) (bar) (psi) (bar) (psi) (Nm) (lbf ft)
450
2200 1620
18"
500
2700 1990
20"
20 6.3 91
25 3.2 46 0.4 6 3.7 54
32 1.6 23 0.9 13 3.1 45 0.5 7 2.5 36 1.4 20 3.7 54
25 3.9 57 0.1 1 3.9 57
32 1.9 28 0.8 12 0.4 6 2.7 39 1.3 19 3.8 55 M25 98 72
*)spring 4.8 70 4.2 61 *)spring 5.3 77 M15 107 79
*)spring 3.1 45 0.9 13 4.2 61 M16 83 61
*)spring 3.3 48 0.6 9 4.4 64 M16 102 75
**)
pc
BJVpc BJVA
**)
Q-P
pc
Spring to close Spring to open Manual
actuator
operator
Input
torque M1
600
4400 3240
24"
700
6500 4790
28"
25 6.7 97
*)spring
32 3.3 48 0.4 6 3.7 54
4.8 70 4.2 61
*)spring
40 1.6 23
32 4.9 71
*)spring
4.2 61 3.6 52 0.3 4 4.8 70 M25 244 180
322 0.6 9 0.2 3
40 2.4 35
*)spring
5.3 77 M16 166 122
3.1 45 0.8 12 4.3 62
50 1.2 17
750
8000 5900
30"
32 6.1 88 4.6 67 4 58
322 0.5 7
*)spring
40 3,9 42
*)spring
5.2 75 M25 103 76
50 1.5 22
800
9400 6930
32"
900
12600 9290
36"
1000
16400 12090
40"
1200
25600 18880
48"
*) spring = spring torque not adequete to reach tightness according to ISO 5208 Rate D, BS 6755 Part 1 Rate D, ANSI/FCI 70.2 Class V, IEC 534-4 or MSS-SP72/1970
**) Adjust the supply pressure regulator to the pressure below. Do not exceed given value.
322 0.3 4
40 3.5 51
50 1.8 26
322
*)spring
40 4.6 67
50 2.4 35
40 5.7 83
50 2.9 42
502 1.3 19
50 4.8 70
502 2 29
*)spring
Table 8. Series L1D, L2D closing torques
DN
SIZE
Mc BC and BJ
SIZE
BC
pc
BJpcBJA
pc
**)
BJKpcBJKA
(Nm) (lbf ft) (bar) (psi) (bar) (psi) (bar) (psi) (bar) (psi) (bar) (psi) (bar) (psi) (bar) (psi) (bar) (psi) (bar) (psi) (Nm) (lbf ft)
*)spring
4.3 62 3.7 54 0.2 3 4.8 70 M16 128 94
450
3400 2510
18"
25 4.9 71
32 2.4 35 0.6 9 3.4 49 0.2 3 2.8 41 1.1 16 4 58
322 1 15 2.9 42 0.6 9 2.2 32 1.5 22 3.4 49
40 1.2 17
*)spring
500
4100 3020
20"
32 3 43 0.4 6 3.6 52
40 1.4 20 M25 149 110
322 0.9 13 3 43 0.5 7 2.4 35
50 0.8 12
502 0.3 4
600
6700 4940
24"
700
9800 7230
28"
750
12000 8850
30"
800
14000 10320
32"
900
19000 14010
36"
*) spring = spring torque not adequete to reach tightness according to ISO 5208 Rate D, BS 6755 Part 1 Rate D, ANSI/FCI 70.2 Class V, IEC 534-4 or MSS-SP72/1970
**) Adjust the supply pressure regulator to the pressure below. Do not exceed given value.
32 4.8 70
322 0.6 9 0.2 3
40 2.3 33
322 0.2 3
40 3.4 49
50 1.8 26
322
40 4.2 61
50 2.2 32
40 4.9 71
50 2.5 36
50 3.4 49
502 1.5 22
*)spring
*)spring
4.3 62 3.6 52 0.2 3 4.9 71 M25 244 180
*)spring
pc
**)
BJVpcBJVA
**)
Q-P
pc
Spring to close Spring to open Manual
actuator
operator
3 43 0.9 13 4.2 61 M16 155 114
Input torque M1
2 L1 71 en 15
Identification number
Charge number
Mfg-number
9 EXPLODED VIEW AND PARTS LIST
Item Qty Description Spare part category
11Body
21Clamp ring
31Disc 3
41Seat ring 2
91Gland
10 1 Blind flange
11 1 Drive shaft 3
12 1 Shaft 3
13 1 Key 3
14 3 Pin 3
15 1 Bearing 3
16 1 Bearing 3
18 1 Gasket 1 *
19 1 Body seal 1 *
20 1 set Gland packing 1 *
24 2 Stud
25 2 Hexagon nut
26 Hexagon screw
27 Hexagon socket screw
28 1 Lifting eye bolt (DN 600- )
29 1 Identification plate
42 2 Retaining plate
44 2 Disc spring set
Spare part set category 1: Recommended soft parts, always needed for the repair. Delivered as a set.
Spare part category 2: Parts for replacing of the seat
Spare part category 3: Parts for replacing of the closing element
Spares for the full overhaul: All parts from the categories 1, 2 and 3
16 2 L1 71 en
10 DIMENSIONS AND WEIGHTS
Ø O
E
R
M
C
NP
K
S
U
V
DN
A1
A
B
S
U
V
T
V
U
S
V
S
T
L1C/ASME 150
Size Dimensions, mm
in DN A A1 B C E S T O R M P N
18 450 114 46 537 370 608 160 55 3/4 1/2 50 228 12.7 55.5 90 130
20 500 127 53 590 415 649 160 55 3/4 1/2 55 229 12.7 60.6 90 160
24 600 154 65 690 505 794 230 90 1 5/8 70 299 19.05 78.2 119 280
28 700 229 96 805 545 886 230 90 1 5/8 85 326 22.23 94.7 146 400
30 750 229 96 870 585 911 230 90 1 5/8 85 326 22.23 94.7 146 470
32 800 241 101 910 600 1006 330 120 1 1/4 3/4 95 376 22.23 104.8 156 550
36 900 241 105 1010 660 1060 330 120 1 1/4 3/4 105 395 25.4 116.2 180 710
40 1000 300 130 1120 715 1090 330 120 1 1/4 3/4 120 330 31.75 133.8 205 950
U
UNCVUNC
Dimensions, mm
U
T
Weigh t
kg
L1D/ASME 300
Size Dimensions, mm
in DN A A1 B C E S T O R M P N
18 450 180 90 565 410 655 230 90 1 5/8 70 250 19.05 78.2 119 245
20 500 200 100 625 465 705 230 90 1 5/8 85 250 22.23 94.7 146 305
24 600 240 120 743 525 860 330 120 1 1/4 3/4 95 330 22.23 104.8 156 540
28 700 250 125 848 615 935 330 120 1 1/4 3/4 120 330 31.75 133.8 205 830
30 750 300 150 942 655 970 360 135 1 1/4 7/8 135 330 31.75 149.0 225 1250
36 900 360 180 1100 730 1060 360 135 1 1/4 1 165 330 38.10 181.0 280 2000
U
UNCVUNC
Dimensions, mm
Weigh t
kg
2 L1 71 en 17
øB*
K*
J
V
F
G
øZ
L1C + M
L1C + M
Type F G J V øZ k g
M07 196 152 58 39 160 3
M10 297 239 67 52 200 5
M12 357 282 81 67 315 10
M14 435 345 94 90 400 18
M15 532 406 106 123 500 31
M16 642 466 127 154 600 45
18 2 L1 71 en
NPT
V
A1
A
DN
B
X
G
F
IJC
H
NPT
L1C + B1C (DN 80...400)
Type valve and
actuator
L1C 18 - B1C20 450 114 46 537 370 840 575 1090 215 275 595 97 1/2 210 1105
L1C 18 - B1C25 450 114 46 537 370 1040 710 1150 265 310 618 121 1/2 275 1180
L1C 18 - B1C32 450 114 46 537 370 1330 910 1235 395 350 665 153 3/4 390 1265
DN A A1 B C F G H X I J V
Dimensions, mm
NPT
Weigh t
kg
* = Dimension H for B1CM
L1C + B1C (DN 500...1000)
Type valve and
actuator
L1C 20 - B1C25 500 127 53 590 415 1040 710 1235 265 310 658 121 1/2 305 1265
L1C 20 - B1C32 500 127 53 590 415 1330 910 1320 395 350 705 153 3/4 420 1350
L1C 24 - B1C25 600 154 65 690 505 1040 710 1410 265 310 743 121 1/2 425 1440
L1C 24 - B1C32 600 154 65 690 505 1330 910 1485 395 350 780 153 3/4 540 1515
L1C 24 - B1C40 600 154 65 690 505 1660 1150 1610 505 365 850 194 3/4 755 1655
L1C 28 - B1C32 700 229 96 805 545 1330 910 1590 395 350 845 153 3/4 650 1620
L1C 28 - B1C40 700 229 96 805 545 1660 1150 1715 505 365 915 194 3/4 875 1760
L1C 28 - B1C50 700 229 96 805 545 1970 1350 1815 610 415 965 242 1 1260 L1C 30 - B1C32 750 229 96 870 585 1330 910 1655 395 350 870 153 3/4 740 1685
L1C 30 - B1C40 750 229 96 870 585 1660 1150 1780 505 365 940 194 3/4 955 1825
L1C 30 - B1C50 750 229 96 870 585 1970 1350 1880 610 415 990 242 1 1330 L1C 32 - B1C32 800 241 101 910 600 1330 910 1725 395 350 925 153 3/4 820 1755
L1C 32 - B1C40 800 241 101 910 600 1660 1150 1865 505 365 1010 194 3/4 1035 1910
L1C 32 - B1C50 800 241 101 910 600 1970 1350 1965 610 415 1060 242 1 1410 L1C 36 - B1C40 900 241 105 1010 660 1660 1150 1960 505 365 1045 194 3/4 1185 1205
L1C 36 - B1C50 900 241 105 1010 660 1970 1350 2060 610 415 1095 242 1 1580 L1C 40 - B1C40 1000 300 130 1120 715 1660 1150 2110 505 365 1140 194 3/4 1455 2155
L1C 40 - B1C50 1000 300 130 1120 715 1970 1350 2210 610 415 1190 242 1 1830 -
DN A A1 B C F G H X I J V
Dimensions, mm
NPT
Weigh t
kg
*H
*H
L1D + B1C
Type valve and
actuator
L1D 18 - B1C25 450 180 90 565 410 1040 710 1225 265 310 653 121 1/2 385 1255
L1D 18 - B1C32 450 180 90 565 410 1330 910 1300 395 350 690 153 3/4 510 1330
L1D 20 - B1C32 500 200 100 625 465 1330 910 1405 395 350 740 153 3/4 570 1435
L1D 20 - B1C40 500 200 100 625 465 1660 1150 1530 505 365 810 194 3/4 775 1575
L1D 24 - B1C32 600 240 120 743 525 1330 910 1550 395 350 825 153 3/4 810 1580
L1D 24 - B1C40 600 240 120 743 525 1660 1150 1690 505 365 910 194 3/4 1015 1735
DN A A1 v v F G H I X J V
* = Dimension H for B1CM
Dimensions, mm
Weigh t
NPT
kg
*H
2 L1 71 en 19
NPT
A
A1
V
DN
B
C
J
H
I
X
G
F
L1C + B1J
Type valve and
actuator
L1C 18 -B1J20 450 114 46 537 370 1200 935 1155 395 250 585 97 3/4 295
L1C 18 -B1J25 450 114 46 537 370 1530 1200 1245 505 290 618 121 3/4 450
L1C 18 - B1J32 450 114 46 537 370 1830 1410 1305 540 330 665 153 1 840
L1C 20 - B1J25 500 127 53 590 415 1530 1200 1330 505 290 658 121 3/4 480
L1C 20 - B1J32 500 127 53 590 415 1830 1410 1390 540 330 705 153 1 870
L1C 24 - B1J25 600 154 65 690 505 1530 1200 1505 505 290 743 121 3/4 600
L1C 24- B1J32 600 154 65 690 505 1830 1410 1555 540 330 780 153 1 990
L1C 28 - B1J32 700 229 96 805 545 1830 1410 1660 540 330 845 153 1 1120
L1C 30 - B1J32 750 229 96 870 585 1830 1410 1725 540 330 870 153 1 1190
L1C32 - B1J32 800 241 101 910 600 1830 1410 1795 540 330 925 153 1 1270
DN A A1 B C F G H X I J V
Dimensions, mm
NPT
Weigh t
kg
L1D + B1J
Type valve and
actuator
L1D 18 - B1J32 450 180 90 565 410 1830 1410 1370 540 330 690 153 1 960
L1D 20 - B1J32 500 200 100 625 465 1830 1410 1475 540 330 740 153 1 1020
L1D 24 - B1J32 600 240 120 743 525 1830 1410 1620 540 330 825 153 1 1260
DN A A1 B C F G H X I J V
Dimensions, mm
NPT
Weigh t
kg
20 2 L1 71 en
11 TYPE CODE
NELDISC® HIGH PERFORMANCE TRIPLE ECCENTRIC DISC VALVE,
Series L1, L2
1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13.
-L1CMA20AA J AT / - -
1. S-DISC CONSTRUCTION
- without sign, standard valve without S-disc
S- Flow balancing trim on downstream side
2. PRODUCT SERIES
L1 Wafer type / full bore
L2 Lug type / full bore
3. PRESSURE RATING
Body ASME class 150 (PN 25, PN10-25, ASME150, ISO PN 20,
C
JIS 10K, JIS 16K). Body max pressure 25 bar, maximum
differential pressure 20 bar.
Body ASME class 300 (ISO PN 50, PN40, ISO PN50, ASME300, JIS
D
16K, JIS 20K, JIS 30K) Body max pressure 50 bar.
4. SEAT TYPE
M Metal seat
5. CONSTRUCTION
A STANDARD
CRYOGENIC (Standard Cryo extension)
C
T = -198 °C..-50 °C
CRYOGENIC (Optional Cryo extension, short)
1C
T = -100 °C..-50 °C
CRYOGENIC (Optional Cryo extension, extra long)
2C
T = -198 °C..-50 °C
HIGH TEMP (ATEX II 2 G c)
H
Tmax = +600 °C
STEAM JACKET (ATEX II 2 G c)
S
(ONLY FOR L1)
EROSION CONSTRUCTION
E
(ONLY FOR L1C)
BEARING PROTECTION
B
- O-ring bearing protection for soft bearings.
POLISHED ( ONLY FOR L1 )
P
- polished flow port and disc (Ra 0.8), guided flange.
OXYGEN CONSTRUCTION
- Degreasing acc. to Neles standard
Z
Note! This is the construction for oxygen flow media
more info see IMO 10O270en.pdf
Y Special, to be specified
6. VALVE SIZE
Valves acc. to ASME pressure ratings:
L1C: 18, 20, 24, 28, 30, 32, 36, 40, 48
L2C: 18, 20, 24, 28, 30, 32, 36
L1D: 18, 20, 24, 28, 30, 36, 48 (48" with Class 150 internals)
L2D: 18, 20, 24, 30
7. BODY MATERIAL
A ASTM A351 gr. CF8M
C ASTM A351 gr. CG8M
P ASTM A216 gr. WCB
F ASTM A352 gr. LCC
Y Special
8. DISC MATERIAL
A ASTM A351 gr. CF8M
C ASTM A351 gr. CG8M
P ASTM A216 gr. WCB
Y Special
9. SHAFT AND PIN MATERIAL
J SS 329 (SIS 2324
C Gr. 630 (17-4PH)
H Nimonic 80A
N XM-19 (Nitronic 50)
10. SEAT MATERIAL
Incoloy 825, hard chrome plated, valve size 16" - 24"
A
T = -200 °C ... + 500 °C
W. No. 1.4418, hard chrome plated, available only for valve size
B
28" and bigger
T = -200 °C ... + 400 °C
Nimonic 80A ( UNS N07080), hard chrome plated, valve size 16"
H
- 64" ( 64" is max internal size) T = -200 °C ... + 650 °C (not Nace)
ASTM A182 Gr F5, hard chrome plated, valve size 26" and bigger
H1
T = -50°C ... + 540°C
W. No. 2.4681, UNS R31233 (ULTIMET), valve size 16" - 24"
K
T = -200 °C ... + 600 °C
11. PACKING CONSTRUCTION
T Live loaded PTFE V-ring packing with spring sets.
G Live loaded graphite packing. (ATEX II 3 G c) Firesafe
12. FLANGE FACING
Ra 3,2 - 6,3 standard
covering:
-
EN 1092-1 type B1 (a 3.2–12.5)
ASME B16.5, Ra 6,3–6,3, (125–250 μin)
13. FLANGE DRILLING
without sign according to valve pressure rating, C ASME cl.150
-
and D ASME cl.300.
J PN 10
K PN 16
L PN 25
M PN 40
R JIS 10K
S JIS 16K
T JIS 20K
U JIS 30K
X ISO PN 20
Z ISO PN 50
B ASME 16.47 Series B cl.150 and cl.300 (size 24"...48".
Y Special
Metso Flow Control Inc.
Europe, Vanha Porvoontie 229, P.O. Box 304, FI-01301 Vantaa, Finland. Tel. +358 20 483 150. Fax +358 20 483 151
North America, 44 Bowditch Drive, P.O. Box 8044, Shrewsbury, M A 01545, USA. Tel. +1 508 852 0200. Fax +1 508 852 8172
South America, Av. Independéncia, 2500-Iporanga, 18087-101, Sorocaba-São Paulo, Brazil. Tel. +55 15 2102 9700. Fax +55 15 2102 9748
China, 11/F, China Youth Plaza, No.19 North Rd of East 3rd Ring Rd, Chaoyang District, Beijing 100020, China. Tel. +86 10 6566 6600. Fax +86 10 6566 2583
Middle East, Roundabout 8, Unit AB-07, P.O. Box 17175, Jebel Ali Freezone, Dubai, United Arab Emirates. Tel. +971 4 883 6974. Fax +971 4 883 6836
Asia Pacic, 238B Thomson Road, #17-01 Novena Square Tower B, Singapore 307685. Tel. +65 6511 1011. Fax +65 6250 0830
www.metso.com/valves
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