Metso Neles L4 Series Operating and maintenance manual

2 L6 70 en • 10/2017
NELDISC®
Metal seated high performance
triple eccentric disc valve
Series L6, L4
Installation, Maintenance and
Operating Instructions

22 L6 70 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!
Subject to change without notice.
All trademarks are property of their respective owners.
Table of Contents
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 CE marking ..............................................................4
1.6 Recycling and disposal .......................................4
1.7 Safety precautions ...............................................4
2 TRANSPORTATION, RECEPTION AND
STORAGE ..............................................................4
3 INSTALLATION .....................................................4
3.1 General .....................................................................4
3.2 Mounting into the pipeline............................... 5
3.3 Actuator ...................................................................7
4 COMMISSIONING .................................................7
5 MAINTENANCE .....................................................7
5.1 Maintenance general ..........................................7
5.2 Removing the valve from the pipeline .........8
5.3 Replacing the gland packing ........................... 8
5.4 Valve leakage .........................................................9
5.5 Replacing the seat ring .................................... 10
5.6 Replacing the disc, shafts and bearings .... 11
5.7 Assembling the valve ....................................... 11
6 DETACHING AND INSTALLING THE
ACTUATOR .........................................................12
6.1 General ................................................................... 12
6.2 Detaching the B1 series actuators ............... 12
6.3 Detaching the EC and EJ actuators ............. 12
6.4 Installing the B1 series actuator ................... 12
6.5 Installing EC and EJ actuators ....................... 13
6.6 Detaching and installing other
actuator types..................................................... 14
6.7 Stop screw adjustment.................................... 14
7 TOOLS ................................................................ 16
8 ORDERING SPARE PARTS ..................................16
9 EXPLODED VIEW AND PARTS LIST ...................25
9.1 L6C, L6D ................................................................ 25
9.2 L6F ........................................................................... 26
10 DIMENSIONS AND WEIGHTS ........................... 27
11 TYPE CODE .........................................................33
This product meets the requirements set by the Customs Union of the Republic of Belarus,
the Republic of Kazakhstan and the Russian Federation.

2 L6 70 en 3
1 GENERAL
1.1 Scope of the manual
This manual provides essential information for users of Nel-
disc® triple eccentric disc valves. If you need further infor-
mation on actuators and other accessories, please refer to
the individual manuals on their installation, operation and
maintenance..
1.2 Valve description
Neldisc series L6 is a double flanged type metal seated tri-
ple eccentric disc valve. Neldisc series L4 is a wafer type
metal seated triple eccentric disc valve.
The disc is elliptical and has a triple 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 inter-
pret the type code, please refer to Section 11.
1.3 Valve markings
Body markings are cast on the body. The valve also has an
identification plate attached to it (see Fig. 2).
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:
L6 Flanged, reduced bore,
metal seated triple eccentric
disc valve
L4 Wafer, reduced bore
metal seated triple eccentric
disc valve
Pressure class:
L6C ASME Class 150
L6D ASME Class 300
L6F Body and trim ASME Class 600
L6F/D Body ASME Class 600
Trim ASME Class 300
L4F/D Body ASME Class 600
Trim ASME Class 300
Possible flange drillings:
L6C ASME B16.5 & B16.47 Class 150
EN 1092-1 PN 10 & PN 16
ISO 7005 PN 20
JIS 2210 10K & 16K
L6D ASME B16.5 & B16.47 Class 300
EN 1092-1 PN 25 & PN 40
ISO 7005 PN 50
JIS 20K & 30K
L6F ASME B16.5 Class 600
EN 1092-1 PN 63 & PN 100
Temperature range: -200 °C to +600 °C
(-328 °F to +1100 °F)
Flow direction: Free (L6C, L6D, L6F/D, L4F/D)
Flow from shaft side (L6F)
Dimensions: See Section 10
Weights: See Section 10
NOTE:
Selection and use of the valve in a specific application
requires close consideration of many different aspects.
Due to the nature of the product, this manual cannot
cover all the individual situations that may occur when the
valve is used.
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)
Fig. 1. Neldisc seating principle
L6C, L6D,
L6F/D
L6F
Fig. 2. Identification plate
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)

42 L6 70 en
1.5 CE marking
The valve meets the requirements of the European Direc-
tive 2014/68/EU relating to pressure equipment, and has
been marked according to the Directive.
1.6 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.
1.7 Safety precautions
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:
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 pipe-
line 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 sub-
stances. 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.
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 software.
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, posi-
tioner, limit switch or their piping.
Place the lifting ropes securely around the valve body (see
Fig. 3).
Damage or personal injury may result from falling parts.
CAUTION:
For safety reasons use a blind flange after the valve
always when the pipe line is terminated immediately
after the valve.
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°.
CAUTION:
When handling the valve or the valve package, bear in
mind its weight!
Follow the lifting methods shown in Fig. 3.
Fig. 3. Lifting of the valve

2 L6 70 en 5
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 tight-
ness in both directions (L6C/D, L6F/D). L6F offers tightness
in one direction.
Install the valve in the pipeline so that the shaft is horizon-
tal 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 down stream 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).
Not recommended mounting position coding for valve-
actuator unit if using S-disc: A-HL, B-HL, C-HL and D-HL.
Select flange gaskets according to the operating condi-
tions.
Do not attempt to correct pipeline misalignment by means
of flange bolting.
It may be necessary to firmly support the pipeline to pro-
tect the valve from excess stress. Sufficient support will also
reduce pipeline vibration and this ensures proper function-
ing of the positioner. Do not fasten supports to the flange
bolting or to the actuator.
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 triple eccentric disc 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.
The valve shaft of a 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 intermedi-
ate positions will be eliminated.
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, see Fig.7 and Table 1.
Use caution when installing valve with Spring-to-open
actuator. Valve must be in closed position during installa-
tion if the disc exceeds the Face-to-face length. Energy sup-
ply for the actuator must be safely fastened and it cannot
suffer damage or break off during the installation.
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 holes, see Fig. 8 and Tables 2...6.
Ensure that the disc can turn to the open position after pre-
liminary tightening of the flange bolts. The actuators of
control valves can be equipped with position stops which
usually only allow the disc to open 80°.
Lenght of stud bolts in Tables 2...6 are based on:
gasket thickness of 3 mm
heavy nuts
flange thickness of weldneck flanges per ASME
Fig. 4. Position of the flow balancing trim
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.
Fig. 5. Mounting after a pipe elbow
Fig. 6. Mounting after the centrifugal pump
Fig. 7. Minimum pipe inside dimensions

62 L6 70 en
Fig. 8. Stud bolt lenght
Table 1. Minimum pipe inside dimensions (mm / in)
Valve
size L6C L6D L6F/D L6F L4F/D
DN /
NPS mm inch mm inch mm inch mm inch mm inch
4------ 602.4
5----
6 20 0.8 20 0.8 - - 110 4.3
8 70 2.8 60 2.4 115 4.5 140 5.5
10 135 5.3 125 4.9 - - 180 7.1
12 215 8.5 200 7.9 190 7.5 190 7.5
14 275 10.8 265 10.4 - - 175 6.9
16 305 12.0 300 11.8 220 8.7 220 8.7
18 355 14.0 335 13.2 270 10.6
20 400 15.7 385 15.2 335 13.2 335 13.2
24 445 17.5 425 16.7 415 16.3 415 16.3
26 535 21.1 395 15.6 0.0
28 530 20.9 535 21.1 450 17.7 535 21.1
30 525 20.7 520 20.5 450 17.7
32 640 25.2 640 25.2 435 17.1 640 25.2
36 755 29.7 690 27.2 690 27.2 690 27.2
38 755 29.7
40 835 32.9 690 27.2
42 850 33.5 820 32.3
48 920 36.2 810 31.9
56 1115 43.9 1115 43.9
64 1285 50.6
72 1505 59.3
80 1440 56.7
Table 2. Stud bolt dimensions (mm), L6C
ASME Class 150 flanges. Both flanges included.
Size
NPS
Thread
K
LL1
Length Qty Length Qty
04 5/8-UNC 90 12 80 4
05 3/4-UNC 95 12 80 4
06 3/4-UNC 100 12 80 4
08 3/4-UNC 110 12 90 4
10 7/8-UNC 115 20 95 4
12 7/8-UNC 120 20 100 4
14 1-UNC 135 20 110 4
16 1-UNC 135 24 110 8
18 1 1/8-8UN 145 24 130 8
20 1 1/8-8UN 160 32 130 8
24 1 1/4-8UN 170 32 140 8
28* 1 1/4-8UN 230 48 170 8
30* 1 1/4-8UN 230 48 170 8
32* 1 1/2-8UN 260 48 200 8
34* 1 1/2-8UN 260 56 200 8
36* 1 1/2-8UN 280 56 210 8
40* 1 1/2-8UN 280 64 200 8
42* 1 1/2-8UN 290 56 210 16
48* 1 1/2-8UN 310 72 240 16
52* 1 3/4-8UN 350 72 280 16
56* 1 3/4-8UN 360 80 290 16
*) flanges acc. to ASME B16.47 series A
Table 3. Stud bolt dimensions (mm), L6D
ASME Class 300 flanges. Both flanges included.
Size
NPS
Thread
K
LL1
Length Qty Length Qty
04 3/4-UNC 115 12 100 4
05 3/4-UNC 120 12 100 4
06 3/4-UNC 120 16 100 8
08 7/8-UNC 140 16 110 8
10 1-UNC 160 24 120 8
12 1 1/8-8UN 170 24 130 8
14 1 1/8-8UN 180 32 140 8
16 1 1/4-8UN 190 32 150 8
18 1 1/4-8UN 195 40 150 8
20 1 1/4-8UN 205 40 160 8
24 1 1/2-8UN 230 40 180 8
26* 1 5/8-8UN 270 48 210 8
28* 1 5/8-8UN 280 40 210 16
30* 1 3/4-8UN 300 48 230 8
32* 1 7/8-8UN 320 40 250 16
36* 2-8UN 360 48 260 16
42* 1 5/8-8UN 350 48 250 16
44* 1 3/4-8UN 320 48 260 16
48* 1 7/8-8UN 390 48 340 16
56* 2 1/4-8UN 460 48 360 8
*) flanges acc. to ASME B16.47 series A
Table 4. Stud bolt dimensions (mm), L6F/D
ASME Class 600 flanges. Both flanges included.
Size
NPS
Thread
K
LL1
Length Qty Length Qty
04 7/8-UNC 170 8 130 4
06 1 UNC 200 16 135 8
08 1 1/8-8UN 225 16 150 8
10 1 1/4-8UN 250 24 170 8
12 1 1/4-8UN 260 32 170 8
14 1 3/8-8UN 250 32 150 8
16 1 1/2-8UN 300 32 210 8
18 1 5/8-8UN 320 32 220 8
20 1 5/8-8UN 290 32 195 8
24 1 7/8-8UN 330 32 225 8
28* 2-8UN 370 48 260 8
30* 2-8UN 370 40 260 16
36* 2 1/2-8UN 415 32 270 8
*) flanges acc. to ASME B16.47 series A

2 L6 70 en 7
3.2.1 Valve insulation
If necessary, the valve may be insulated. Insulation must not
continue above the upper level of the valve body, see Fig-
ure 9.
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 cyl-
inder.
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 busi-
ness 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-capac-
ity pumps, creates a torque peak in the disc. This can dam-
age the pin connection between disc and shaft when the
valve is 30–90° open.
The packing construction is live loaded. If the leakage
occurs, re-tighten the gland nuts but don't exceed the val-
ues in the Tables 7, 8 and 9 by 50 % or do not fully compress
the disc springs.
5 MAINTENANCE
5.1 Maintenance general
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 recom-
mends 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 inter-
val.
Maintenance can be performed as presented below. Fo
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.
Table 5. Stud bolt dimensions (mm), L4F/D
ASME Class 600 flanges
Size
NPS
Thread
K
øH
mm
LL1
L2
Length Qty Length Qty
04 7/8-UNC 25,4 210 8 - - -
06 1-8UN 28,4 250 12 - - -
08 1 1/8-8UN 31,7 290 12 - - -
10 1 1/4-8UN - 340 12 160 8 40
12 1 1/4-8UN - 410 16 170 8 45
14 1 3/8-8UN - 440 16 170 8 44
16 1 1/2-8UN - 490 16 200 8 60
20 1 5/8-8UN - 540 20 210 8 48
24 1 7/8-8UN - 610 20 230 8 60
28* 2-8UN - 680 24 250 8 60
32* 2 1/4-8UN - 710 28 230 8 55
36* 2 1/2-8UN - 770 28 260 8 60
*) flanges acc. to ASME B16.47 series A
Table 6. Stud bolt dimensions (mm), L6F
ASME Class 600 flanges. Both flanges included
Size
NPS
Thread
K
LL1
Length Qty Length Qty
06 1 UNC 165 8 135 4
08 1 1/8 - 8UN 190 16 140 8
10 1 1/4 - 8UN 215 20 160 12
12 1 1/4 - 8UN 220 24 160 16
14 1 3/8 - 8UN 235 24 170 16
16 1 1/2 - 8UN 255 24 190 16
18 1 5/8 - 8UN 275 24 210 16
24 1 7/8 - 8UN 330 32 230 16
28 2 - 8UN 364 48 257 84
30* 2 - 8UN 370 40 260 16
36* 2 1/2 - 8UN 410 40 280 16
*) flanges acc. to ASME B16.47 series A
Fig. 9 Insulation of the valve
Insulation limit
CAUTION:
Observe the safety precautions mentioned in Section
1.7 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 according to Section 5.3.
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 data
sheets (MSDS)).
NOTE:
In order to ensure safe and effective operation, always use
original spare parts to make sure that the valve functions
as intended.

82 L6 70 en
5.2 Removing the valve from the pipeline
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 diffi-
cult 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 sec-
tion 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 care-
fully and unscrew the pipe flange bolts. Ensure that the
ropes are positioned correctly. Lift valve correctly (see
Fig. 3).
5.3 Replacing the gland packing
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 recom-
mended.
5.3.1 L6C, L6D, L6F/D and L4F/D
Make sure the valve is not pressurized.
Unfasten the nuts (25) and remove the disc spring
(TA-Luft) kits (43), the retaining plates (42) and the
gland (9).
Remove old packing rings (20). Do not damage the
surfaces of the packing ring counterbore and shaft. It
is not necessary to change anti-extrusion ring (22).
Clean the gland and packing ring counterbore.
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. 10).
Mount the disc spring kits.
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 Tables 7 and 8.
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 h1of 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 com-
pression (h1–h2) of disc springs is achieved, see
Tables 7 and 8.
NOTE:
For safety reasons, replace pressure retaining bolting if the
threads are damaged, have been heated, stretched or cor-
roded.
CAUTION:
Do not dismantle the valve or remove it from the pipe-
line while the valve is pressurized!
CAUTION:
Do not dismantle the valve or remove it from the pipe-
line while the valve is pressurized!
Fig. 10. Mounting the retaining plates
Table 7. Tightening of gland packing, L6C and L6D
L6C L6D Spring set
dia Thread Compression (h1–h2), mm
Packing ring material
DN / NPS DN / NPS mm M, UNC Graphite +
PTFE PTFE
100 / 4 100 / 4 20 M8, 5/16 2.0 1.0
150 / 6, 200 /
8150 / 6 20 M8, 5/16 2.5 1.5
250 / 10 200 / 8 25 M10, 3/8 2.5 1.5
300 / 12 25 M10, 3/8 3.0 1.5
350 / 14 250 / 10 25 M10, 3/8 3.0 2.0
400 / 16 25 M10, 3/8 3.0 2.0
450 / 18 300 / 12 35.5 M14, 1/2 4.5 2.5
500 / 20 350 / 14 35.5 M14, 1/2 4.5 2.5
600 / 24 400 / 16 35.5 M14, 1/2 4.5 3.0
700 / 28,
750 / 30
450 / 18,
500 / 20 40 M18, 5/8 5.0 3.0
800 / 32 600 / 24 40 M18, 5/8 5.5 3.5
900 / 36,
950 / 38
700 / 28,
750 / 30 50 M20, 3/4 6.0 4.0
1000 / 40 50 M20, 3/4 6.5 4.0
1200 / 48 50 M20, 3/4 6.0 5.0
800 / 32 56 M24, 1 6.5 5.5
900 / 36 50 M22, 7/8 6.5 5.0
1400 / 56 71 M30, 1 1/4 6.5 6.5
1000 / 40,
1200 / 48 56 M24, 1 (4 pcs.) 6.5 6.0
1400 / 56 80 M36, 1 1/2 9.0 6.5
Table 8. Tightening of gland packing, L6F/D and L4F/D
L6F/D
L4F/D Spring set dia Thread Compression (h1–h2) mm
Packing ring material
DN / NPS mm M, UNC Graphite + PTFE PTFE
100 / 4 25 M10, 3/8 1.5 1.0
150 / 6 25 M10, 3/8 1.5 1.0
200 / 8 35.5 M14, 1/2 2.0 1.0
250 / 10 40 M18, 5/8 3.5 1.5
300 / 12 50 M20, 3/4 4.0 2.0
350 / 14 50 M20, 3/4 3.5 2.0
400 / 16 50 M20, 3/4 3.5 2.0
450 / 18 50 M22, 7/8 4.0 2.5
500 / 20 56 M24, 1 6.0 3.5
600 / 24 56 M24, 1 6.5 4.0
700 / 28 71 M30, 1 1/4 6.5 4.0
750 / 30 71 M30, 1 1/4 6.5 4.0
900 / 36 56 M24, 1
(4 pcs.) 6.5 5.0

2 L6 70 en 9
If the leakage still occurs when the valve is pressur-
ized, re-tighten the nuts but don't exceed the values
in the Tables 7 and 8 by 50 % or do not fully com-
press the disc springs.
5.3.2 L6F
Make sure the valve is not pressurized.
Unfasten the nuts (25) and remove the disc spring
(TA-Luft) kits (43), the gland (9a), the retainer ring
(42) and the compression ring (9b).
Remove old packing rings (20). Do not damage the
surfaces of the packing ring counterbore and shaft.
Clean the gland and packing ring counterbore.
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. Position the cut ends of the graphite rings
at a 90° angle to each other.
Mount the compression ring.
Slip the retainer ring on the shaft and push it against
the compression ring, see Fig. 12.
Install the gland.
Mount the disc spring kits.
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 9.
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 h1of 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 com-
pression (h1–h2) of disc springs is achieved, see
Table 9.
If the leakage still occurs when the valve is pressur-
ized, re-tighten the nuts but don't exceed the value
in the Table 9 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 dam-
aged.
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. 14).
Pressure shocks 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.
Fig. 11. Gland packing; L6C, L6D, L6F/D and L4F/D
dia
h1
h2
disc spring set (43)
packing (20)
V-ring set or
graphite packing
anti-extrusion ring (22)
stud (24)
hexagon nut (25)
retainer plate (42)
gland (9)
Table 9. Tightening of gland packing, L6F
L6F Spring set dia
Thread
Compression (h1-h2) mm
DN mm
Packing ring material
Graphite PTFE
No of studs 4 4
200 31.5 M12 3.2 1.1
250 35.5 M14 4.4 1.5
300 40 M16 4.3 1.5
350 40 M16 4.7 1.6
400 50 M20 3.8 1.3
450 50 M20 4.6 1.6
500 50 M20 4.6 1.6
600 71 M30 6.1 2.1
700, 750 71 M30 6.7 2.3
800 80 M36 5.5 1.9
900 80 M36 8.4 2.9
Fig. 12. Mounting the retainer ring
Fig. 13. Gland packing, L6F
dia
h1
h2
stud (24)
hexagon nut (25)
disc spring set (43)
gland (9a)
retainer ring (42)
packing (20)
graphite packing
compression ring (9b)
V-ring set or

10 2 L6 70 en
If the reason for the leakage does not become apparent
after doing the above, the valve must be disassembled for
replacing the parts.
5.5 Replacing the seat ring
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.
5.5.1 L6C, L6D, L6F/D and L4F/D
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 surfaces of the seats and check the sur-
face 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).
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. 15.
Spray a thin layer of dry lubricating fluid, e.g.
Molykote 321R or equivalent, into the seat groove,
surfaces of the clamp ring, seat ring and screws.
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) crosswise and evenly. First to
50 % of recommended torque, then to 100 %.
Recommended torque values for screws are listed in
Table 10. An unevenly tightened flange may damage
the seat ring. The screw heads must be below the
flange surface in lug type valves.
Check the position between the seat ring and the
disc. The valve closes clockwise (see Fig. 14).
Mount the actuator into the valve. Adjust the closed
position limit and check the open position limit (see
Section 6).
5.5.2 L6F
Remove the clamp ring (2) and the old seat ring (4).
Clean up graphite from the body groove.
Polish the contact surface of the new body seal with
emery paper (grade 240). Also polish the edge of the
disc.
Spray a thin layer of dry lubricating fluid, e.g.
Molykote 421R, to the edge of the disc.
Mount a new graphite body seal (19) to the body
and then the seat ring (4).
Mount the clamp ring (2). Tighten the screws (27)
lightly, so that the seat ring (4) is still moveable.
Ensure that the valve is well supported on a stable,
horizontal surface.
Turn the disc with a suitable lever to the horizontal
(=fully closed) position. Lock the lever to this posi-
tion, e.g. using a lifting crane, to prevent the disc
moving in the open direction. See Fig. 16.
Tighten the screws (27) crosswise, see Table 10 for
recommended torques.
Operate the disc to the open position and check the
contact between the seal and the disc. The trace left
in the disc by the seat should be continuous around
the disc. If not, remount the seat ring.
Fig. 14. Open and closed positions of the valve
CAUTION:
Do not dismantle the valve or remove it from the pipe-
line while the valve is pressurized!
Fig. 15. Mounting the body seal
open
closed
Table 10. Clamp ring/blind flange screw torque, Nm ±10 %
Thread
mm / (UNC)
Clamp ring Blind flange
M6, 1/4 14 11
M8, 5/16 19 15
M10, 3/8 38 29
M12, 1/2 66 51
M16, 5/8 160 123
M20, 3/4 310 240
M22, 7/8 420 324
M24, 1 540 416
M32, 1 1/4 1430 1100
M38, 1 1/2 2380 1830

2 L6 70 en 11
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).
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. 17).
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 including anti-extru-
tion ring (22), when applicable, 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. 18).
Remove the bearings (15, 16).
Clean and check all parts carefully.
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 bearings for the valves (N, U and H constructions) are
cobalt alloy bushings which are mounted into the body
together with the shafts.
Mount the bearing into the shaft. Spray a thin layer
of dry lubricating fluid, e.g. Molykote 321R or equiva-
lent, into the inside surface of the bushing and the
shaft bearing groove. Press the bushing with a tight-
ening ring into the shaft bearing groove and fit the
shaft with the bearings carefully into the body
through the tightening ring.
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. 19).
Press the shafts into the disc drillings. Align the pin
holes. The shaft (11) position against the disc must
be according to Fig. 14.
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 11 for forces.
Fig. 16. Replacing the seat, L6F
Fig. 17. Drilling the pins
Fig. 18. Protecting the disc during disassembly and assembly
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.
Fig. 19. Pressing the pins

12 2 L6 70 en
Install the gasket (18) and the blind flange (10).
Tighten the screws (26) lightly.
Then tighten the screws (26) crosswise and evenly.
First to 50 % of recommended torque, then to 100 %.
Recommended torque values for screws are listed in
Table 10.
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. 14).
6 DETACHING AND INSTALLING THE
ACTUATOR
6.1 General
The actuator is factory-mounted on the valve and the
stroke limit stop screws are adjusted in advance.
6.2 Detaching the B1 series actuators
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 Detaching the EC and EJ actuators
Disconnect the actuator from its power source;
detach the air supply pipe and control signal cables
or pipes from their connectors.
First detach the positioner, or any other accessory,
from the actuator, and detach the coupling plate
from the drive shaft. Next, the bushing is loosened
by turning the tightening screw counter-clockwise.
The tightening screw also acts as an extractor. It is
highly recommended to use a suitable bushing from
the tool set H061544 between the tightening screw
(I) and drive shaft. The bushing dimensions are given
in Table 12.
Detach the actuator finally from the valve after the
screws that attach the actuator to the valve have
been removed.
6.4 Installing the B1 series actuator
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 or an equivalent anti-corrosive agent..
Table 11. Pressing the pins, forces kN
Pin diameter,
mm
Force, kN Pin diameter,
mm
Force, kN
5 45 20 500
6 70 25 780
8 95 30 1125
10 140 35 1500
12 200 40 2000
15 300 50 3150
CAUTION:
When handling the valve or the valve package, bear in
mind its weight!
CAUTION:
The actuator must not be removed from the valve in a
pipeline under pressure as result of dynamic torque!
CAUTION:
Do not detach a spring-return actuator unless a stop-
screw is carrying the spring force!
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°.
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.
Fig. 20. Actuator removal, B1 series
Fig. 21. Detaching the EC/EJ actuator
Table 12. Bushing dimensions
Actuator Outer dim. (mm) Inner dim. (mm) Height
(mm)
EC/EJ05 24.5 12.5 15
EC/EJ07 24.5 16.5 32.75
EC/EJ10 24.5 20.5 45
EC/EJ12

2 L6 70 en 13
If a bushing is required between the actuator shaft
bore and the valve shaft, mount it first in the actua-
tor 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 (spring-
to-open), choose the keyway which establishes the
piston in its lower position when the valve is open.
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 6.7).
The opening angle in a control valve can be limited
by a stop screw 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.
6.5 Installing EC and EJ actuators
The actuator is attached to a bracket via an ISO 5211 stand-
ard mounting interface. The actuator is adapted to the
valve shaft with a separate bushing. The bushing (II + II) is a
two-piece cone-shaped bushing, which is tightened firmly
with a tightening screw (I) around the valve shaft.
The bushing and the tightening screw are inserted
to actuator drive shaft according to Fig. 22. Cylindri-
cal pins (III) are inserted in the bushing slots, and
these must be directed into the corresponding slots
in the actuator during tightening. Before the installa-
tion of the bushing and the tightening screw, impu-
rities such as old threadlocking material have to be
removed from the threads of the tightening screw,
and Loctite 225 or similar. Threadlock have to be
carefully applied to the threads, as shown in Fig. 22.
The tightening screw can be turned from inside the
actuator shaft using a suitable hex key, Fig. 23.
Prior to installation, the correct keyway position of
the valve has to be checked. The bushing has four
keyways, two of which are intended for valves with
DIN key and two for valve shafts with ANSI key. The
DIN keyway is located in the split between the bush-
ing halves, and the ANSI keyway is located in the
middle of the half bushing. Fig. 24 shows the keyway
position when the actuator is in a closed position.
The open or closed positions of the actuator can be
identified either by using compressed air, see Fig. 25,
or by checking the position of the pointer at the end
of the drive shaft. The actuator is closed if the direc-
tion of the slot in the coupling plate is transverse to
the direction of the actuator's main line.
Fig. 22. Cone bushing installation
Fig. 23 Tightening of the cone bushing
Fig. 24. Keyway positions on the actuator
Fig. 25. Actuator connections
Loctite 225 or
similar
Key
Installation tool
H061904
DIN keyways at bushing
split
ANSI keyways in the
middle of bushing
ACTUATOR IN CLOSED POSITION
Closing pressure
Stop screw for
open position
Stop screw for
closed position
Opening
pressure

14 2 L6 70 en
Mount the actuator to the valve bracket with four
screws. The tightening screw of the bushing should
be loosened before mounting, to allow the shaft to
fit easily into the actuator.
The actuator construction allows axial movement of
the drive shaft to compensate the valve shaft move-
ment due to e.g. thermal expansion. Check, before
the screw is tightened, that the drive shaft is in the
upper position of its axial movement, which is its
normal position (the mounting position shown in
Fig. 23). Checking is important, as the actuator shaft
drops down slightly when the screw is tightened.
The drive shaft axial movement can be observed and
measured before attachment to a valve. The actuator
drive shaft is in the upper position when its upper
surface conforms to Table 13 (see Fig. 23).
The drive shaft will automatically find its correct
position if the installation tool H061904 (see Fig. 23)
is used. The installation tool is attached instead of
the coupling plate using M4 screws with the drive
shaft in lower position (before the valve is installed).
Tighten the nut of the tool in such a way that the
tool pulls the drive shaft to the uppermost position.
The position may be checked from the side of the
tool.
Install the actuator on the valve and attach the valve
mounting screws loosely by hand. Then tighten the
tightening screw (I) according to Table 13. The
required torque is also marked on a plate close to the
drive shaft on the actuator housing. The installation
tool is removed, and the coupling plate is reat-
tached. Finally, tighten the valve mounting screws.
Check the axial position of the drive shaft. The shaft
position may not be at the upper or lower position X
given in Table 13, or close to those values. Remount
the actuator if the position is not correct.
The valve may malfunction if the tightening of
the connection has been carried out improperly.
Finally, the extreme rotation positions of the valve
are adjusted with the adjustment screws at the ends
of the actuator. The location of the screws for adjust-
ing the close and open positions of the valve are
marked on the actuator housing (see Fig. 25). See
Section 6.7.
6.6 Detaching and installing other
actuator types
See actuator’s manual for details.
6.7 Stop screw adjustment
6.7.1 General
Close the metal seated triple eccentric disc valve by turning
the disc with a torque against the seat. Choose the torque
from Tables 14, 15, 16 and 17 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 read-
just the stop screw after changing the seat and after
mounting the actuator.
6.7.2 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.
6.7.3 Changing the mounting position
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 cre-
ates maximum torque. Do not turn the disc more than 90°
as this could damage the seat.
Table 13. Mounting faces, tightening screws and drive shaft
clearances
Size Mounting Thread Key Nm ~X
upper pos.
(mm)
~X
lower pos.
(mm)
EC/EJ05 F05 M12 6 25 4.0 1
EC/EJ07 F07 M16 8 50 1.5 -2
EC/EJ10 F10 M20 10 100 2.5 -2
EC/EJ12 F12 M24 14 200 3.5 -2
EC/EJ14 F14 M36 19 700 4.5 -2
NOTE:
Metso accepts no responsibility for compatibility of actua-
tors not installed by Metso.
CAUTION:
The actuator must not be removed from the valve in a
pipeline under pressure as result of dynamic torque!
Fig. 26. Changing the mounting position

2 L6 70 en 15
6.7.4 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.
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.
An extra long screw is needed for opening angles
<80°.
6.7.5 Double-acting diaphragm actuator EC
Follow instructions given in Section 6.7.4. See also Fig. 25.
6.7.6 Spring-return cylinder actuator B1J
"Spring-to-close"
Before mounting the cylinder, screw in the closed
position stop screw completely.
The tables indicates *) spring when the spring-cre-
ated torque does not exceed the maximum permit-
ted closing torque Mc. Otherwise, apply the
tabulated pressure Pc into the air connection at the
cylinder end against the spring force. The stop
screw must not 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 actua-
tor clockwise.
An extra long screw is needed for opening angles
<80°.
6.7.7 Spring-return cylinder actuator B1JA
"Spring-to-open"
The actuator being unpressurized the valve is open.
Unscrew the close limit stop screw (actuator hous-
ing). 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. An
O-ring is used for leakproofing the stop screw.
An extra long screw is needed for opening angles
<80°.
6.7.8 Spring-return diaphragm actuator EJ
"Spring-to-close"
Follow instructions given in Section 6.7.6. See also Fig. 25.
"Spring-to-open"
Follow instructions given in Section 6.7.7. See also Fig. 25.
Fig. 27. Cylinder actuator, series B1C
Stop screw for the
closed position
Stop screw for the
open position
Fig. 28. Cylinder actuator, series B1J
Fig. 29. Cylinder actuator, series B1JA
Stop screw for the
closed position
Stop screw for the
open position
Stop screw for the
closed position
Stop screw for the
open position

16 2 L6 70 en
6.7.9 M-series operator
Close the valve as per the tabulated primary torque
M1 (handwheel torque) given in Tables 14, 15, 16
and 17.
Tighten the closed position stop screw until it
touches the linkage, then turn back 1/4 turn and lock
up with with Loctite 225 or similar.
6.7.10 Electric operator
Instructions for adjustment are given in a separate leaflet,
code D304568, which is available from the manufacturer.
7TOOLS
No special tools are needed for servicing the valve. How-
ever, we recommend an extractor tool (ID-code table in
actuator's IMO) for removing the actuator from the valve.
The tool can be ordered from the manufacturer.
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. 30. Actuator, series M
Fig. 31. Electric operator
Stop screw for the
closed position
Stop screw for the
open position

2 L6 70 en 17
Table 14. Series L6C, closing torques
L6C
DN
SIZE
Mc
BC
and
BJ
BC
pc
BJ
pc
BJA**
pc
BJK
pc
BJKA**
pc
BJV
pc
BJVA**
pc
EC
and
EJ
EC
pc
EJ
pc
EJA
pc
Q-P
actuator Spring close Spring open Manual
operator
Input torque
M1
Nm lbf ft SIZE bar psi bar psi bar psi bar psi bar psi bar psi bar psi SIZE bar psi bar psi bar psi bar psi bar psi Nm lbf ft
100
4" 45 33
62.536 5 QP2C 0.693.652 M07 4 3 8 2.1 30 0.7 10 3.3 48 0.3 4 2.8 41 1.1 16 4 58 7 3.4 49 0.1 1 4.2 61 QP3C 1.1 16 3.2 46
10 1.6 23 1.1 16 2.8 41 0.7 10 2.2 32 1.6 23 3.4 49 10
125
5" 75 55
64.159 5QP2C4.362M0775 8 3.4 49 0.2 3 3.8 55 *)sprin
g3.3 48 0.6 9 4.6 68 7 QP3C 0.8 12 3.5 51
92.130 10 2.3 33 0.7 10 3.7 54
10 1.9 28 0.9 13 3.1 45 0.5 7 2.6 38 1.4 20 3.7 54 12 11 1.1 16 14
150
6" 110 80
6687 5 QP3C 0.343.957 M07 107 8572
*)sprin
g4.5 65 3.8 55 *)sprin
g5.3 77 7 QP4C 1 14 3.3 48
9343 10 3.4 49 0.1 1 4.2 61
10 2.4 35 0.6 9 3.4 49 0.2 3 2.9 42 1.1 16 4 58 12 1.4 20 1.1 16 3.3 48 11 1.5 22 14 12 1.3 19 1.1 16 3 43 0.7 10 2.2 32 1.6 23 3.7 54
200
8" 150 110
6 8.2 119 5QP3C4.362M071410 94.159 7 QP4C 0.8 12 3.5 51
10 3.3 48 0.2 3 3.8 55 *)sprin
g3.2460.8124.362 10 4.667
*)sprin
g4.9 71
11 2.1 30 12 1.9 28 0.8 12 3.6 52 12 1.6 23 0.9 13 3.1 45 0.5 7 2.6 38 1.5 22 3.9 57 14
250
10" 300 220
10 6.5 94 *)sprin
g572 4.464
*)sprin
g5.6 81 5 QP4C 4.3 62 M07 26 19
11 4.2 61 7 QP5C 0.8 12 3.5 51 M10 27 20 12 3.3 48 0.2 3 3.8 55 *)sprin
g3.2460.8124.668 10
13 2.1 30 12 3.8 55 *)sprin
g4.5 65
16 1.6 23 0.9 13 3.1 45 0.5 7 2.6 38 1.3 19 3.8 55 14 1.6 23 1 15 3.2 46
300
12" 500 370
12 5.5 80 *)sprin
g4.6 67 4 58 *)sprin
g5.5 80 7 QP5C 0.1 1 4.1 59 M10 43 32
13 3.5 51 10 M12 44 32
16 2.8 41 0.5 7 3.6 52 0 3 43 1 14 4.3 62 12 17 1.8 26 14 2.6 38 0.5 7 3.7 54
350
14" 825 610
13 5.8 84 7M12 69 51 16 4.5 65 *)sprin
g4.2 61 3.6 52 0.3 4 5 73 10 M14 51 38
17 3 43 12 20 2.3 33 0.6 9 3.4 49 0.2 3 2.8 41 1.1 16 3.9 57 14 4.3 62 *)sprin
g4.6 67
400
16" 1160 860
16 6.4 93 *)sprin
g4.9 71 4.3 62 *)sprin
g5.7 83 M14 72 53
17 4.2 61 20 3.3 48 0.3 4 3.7 54 *)sprin
g3.1450.8124.261
25 1.7 25 0.9 13 3.1 45 0.5 7 2.6 38 1.4 20 3.6 52
450
18" 1650 1220
16 9.5 138 5.9 86 5.2 75 *)sprin
g6.8 99 M14 125 92
17 6 87 M15 80 59 20 4.7 68 *)sprin
g4.2 61 3.6 52 0.3 4 4.7 68
25 2.4 35 0.6 9 3.4 49 0.2 3 2.8 41 1.1 16 3.9 57
500
20" 2200 1620
20 6.3 91 *)sprin
g4.8 70 4.2 61 *)sprin
g5.3 77 M15 107 79
25 3.2 46 0.4 6 3.7 54 *)sprin
g3.1450.9134.261 M16 83 61
32 1.6 23 0.9 13 3.1 45 0.5 7 2.5 36 1.4 20 3.7 54
600
24" 2700 1990
25 3.9 57 0.1 1 3.9 57 *)sprin
g3.3480.6 9 4.464 M16 102 75
32 1.9 28 0.8 12 3.2 46 0.4 6 2.7 39 1.3 19 3.8 55 M25 98 72
*) 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.

18 2 L6 70 en
Table 14. Continued
L6C
DN
SIZE
Mc
BC
and
BJ
BC
pc
BJ
pc
BJA**
pc
BJK
pc
BJKA**
pc
BJV
pc
BJVA**
pc
EC
and
EJ
EC
pc
EJ
pc
EJA
pc
Q-P
actuator Spring close Spring open Manual
operator
Input torque
M1
Nm lbf ft SIZE bar psi bar psi bar psi bar psi bar psi bar psi bar psi SIZE bar psi bar psi bar psi bar psi bar psi Nm lbf ft
700
28" 4400 3240
25 6.4 93 *)sprin
g4.8 70 4.2 61 *)sprin
g5.3 77 M16 166 122
32 3.2460.4 6 3.754
*)sprin
g3.1 45 0.8 12 4.3 62
750
30" 4400 3240 40 1.5 22
800
32" 6500 4790
32 4.7 68 *)sprin
g4.2 61 3.6 52 0.3 4 4.8 70 M25 244 180
322 0.6 9 0.2 3
40 2.3 33 50 1.2 17
900
36" 9400 6930 322 0.3 4 *)sprin
g
40 3.3 48
950
38" 9400 6930 50 1.7 25
1000
40" 12600 9290
322 *)sprin
g
40 4.4 64 50 2.3 33
1200
48" 16400 12090
40 5.7 83 50 2.9 42
502 1.3 19
1400
56" 25600 18880 50 4.8 70
502 2 29
1600
64" 35000 25800 50 6.6 96
502 2.7 39
1700
68" 22000 16200 50 4.2 61
502 1.7 25
1800
72" 22000 16200 50 4.2 61
502 1.7 25
2000
80" 22000 16200 50 4.2 61
502 1.7 25
*) 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.

2 L6 70 en 19
Table 15. Series L6D, closing torques
L6D
DN
SIZE
Mc
BC
and
BJ
BC
pc
BJ
pc
BJA**
pc
BJK
pc
BJKA**
pc
BJV
pc
BJVA**
pc
EC
and
EJ
EC
pc
EJ
pc
EJA
pc
Q-P
actuator Spring close Spring open Manual
operator
Input torque
M1
Nm lbf ft SIZE bar psi bar psi bar psi bar psi bar psi bar psi bar psi SIZE bar psi bar psi bar psi bar psi bar psi Nm lbf ft
100
4" 45 33
62.536 5QP2C0.693.652 8 2.1 30 0.7 10 3.3 48 0.3 4 2.8 41 1.1 16 4 58 7 3.4 49 0.1 1 4.2 61 QP3C 1.1 16 3.2 46 M07 4 2
10 1.6 23 1.1 16 2.8 41 0.7 10 2.2 32 1.6 23 3.4 49 10
125
5" 75 55
64.159 5QP2C4.362 8 3.4 49 0.2 3 3.8 55 *)sprin
g3.3 48 0.6 9 4.6 68 7 QP3C 0.8 12 3.5 51 M07 7 5
92.130 10 2.3330.7103.754
10 1.9 28 0.9 13 3.1 45 0.5 7 2.6 38 1.4 20 3.7 54 12 11 1.1 16 14
150
6" 110 80
6687 5QP3C0.343.957M07107 8572
*)sprin
g4.5 65 3.8 55 *)sprin
g5.377 7 QP4C 1 143.348
9343 10 3.4490.1 1 4.261
10 2.4 35 0.6 9 3.4 49 0.2 3 2.9 42 1.1 16 4 58 12 1.4 20 1.1 16 3.3 48 11 1.5 22 14 12 1.3 19 1.1 16 3 43 0.7 10 2.2 32 1.6 23 3.7 54
200
8" 230 170
10 5 72 *)sprin
g4.4 64 3.8 55 0.1 1 5 73 5 QP4C 0.3 4 3.9 57 M07 20 15
11 3.2 46 7 QPC5 1 14 3.3 48 M10 21 15 12 2.5 36 0.5 7 3.5 51 0.1 1 2.9 42 1.1 16 4.3 62 10 13 1.6 23 12 2.9420.3 4 4.159 16 1.3 19 0.9 13 3 43 0.6 9 2.3 33 1.5 22 3.7 54 14
250
10" 460 340
11 6.4 93 5QPC50.343.957M104029 12 5 72 *)sprin
g4.4 64 3.8 55 0.1 1 5.3 77 7 M12 38 28
13 3.2 46 10 M14 28 21 16 2.5 36 0.5 7 3.5 51 0.1 1 2.9 42 1 14 4.2 61 12 5.9 86 *)sprin
g5.5 80
17 1.7 25 14 2.4350.6 9 3.652 20 1.4 20 1 14 2.9 42 0.6 9 2.3 33 1.5 22 3.5 51
300
12" 800 590
13 5.6 81 7M14 49 36 16 4.4 64 *)sprin
g4.2 61 3.6 52 0.4 6 4.9 71 10
17 2.9 42 12 20 2.3 33 0.7 10 3.3 48 0.3 4 2.8 41 1.2 17 3.8 55 14 4.2 61 *)sprin
g4.5 65
350
14" 1250 920
17 4.6 67 1 M15 61 45 20 3.6 52 0.2 3 3.8 55 *)sprin
g3.2 46 0.7 10 4.3 62 M16 44 32
25 1.8 26 0.8 12 3.2 46 0.4 6 2.6 38 1.3 19 3.7 54 32 1 15
400
16" 1750 1290
17 6.4 93 M15 85 63 20 5 72 *)sprin
g4.3 62 3.7 54 0.2 3 4.8 70 M16 62 46
25 2.6 38 0.6 9 3.4 49 0.2 3 2.9 42 1.1 16 3.9 57 32 1.3 19 1 14 2.9 42 0.6 9 2.3 33 1.5 22 3.6 52
450
18" 2500 1840
25 3.6 52 0.2 3 3.8 55 *)sprin
g3.2 46 0.7 10 4.3 62 M16 94 69
32 1.8 26 0.8 12 3.2 46 0.4 6 2.6 38 1.3 19 3.8 55 M25 91 67 40 0.9 13
500
20" 3400 2510
25 4.9 71 *)sprin
g4.3 62 3.7 54 0.2 3 4.8 70 M16 128 94
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 = 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.

20 2 L6 70 en
Table 15. Continued
L6D
DN
SIZE
Mc
BC
and
BJ
BC
pc
BJ
pc
BJA**
pc
BJK
pc
BJKA**
pc
BJV
pc
BJVA**
pc
EC
and
EJ
EC
pc
EJ
pc
EJA
pc
Q-P
actuator Spring close Spring open Manual
operator
Input torque
M1
Nm lbf ft SIZE bar psi bar psi bar psi bar psi bar psi bar psi bar psi SIZE bar psi bar psi bar psi bar psi bar psi Nm lbf ft
600
24" 4100 3020
32 3430.463.652
*)sprin
g3430.9134.261 M16 155 114
40 1.4 20 M25 149 110
322 0.9 13 3 43 0.5 7 2.4 35 130
50 0.8 12
502 0.3 4
700
28"
6700 4940
32 4.8 70 *)sprin
g4.3 62 3.6 52 0.2 3 4.9 71 M25 244 180
322 0.6 9 0.2 3
750
30"
40 2.3 33
800
32" 9800 7230
322 0.2 3 *)sprin
g
40 3.4 49 50 1.8 26
900
36" 12000 8850
322 *)sprin
g
40 4.2 61 50 2.2 32
1000
40"
19000 14010
50 3.4 49
502 1.5 22
1050
42"
1100
44"
1200
48"
1250
50"
1400
56" 38000 28000
50 7.2 104
502 2.9 42
1500
60"
602 2 29
*) 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.