Metso NELDISC LG7L, NELDISC LW7L, NELDISC LW6L, NELDISC LG8M, NELDISC LW8M Installation Maintenance And Operating Instructions

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NELDISC

Metal seated high performance triple eccentric disc valve

Series LW, LG

Installation, Maintenance and Operating Instructions

2 LW 70 en • 4/2011

2 2 LW 70 en

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 ........... .... ... .......4

1.5 Valve approvals......................................4

1.6 CE marking ............................................4

1.7 Recycling and disposal .......................... 4

1.8 Safety precautions .................................4

2 TRANSPORTATION, RECEPTION

AND STORAGE............................................... 5

3 INSTALLATION ............................................... 5

3.1 General ..................................................5

3.2 Mounting into the pipeline .................. ... . 5

3.3 Actuator..................................................8

4 COMMISSIONING ........................................... 8

5 SERVICE.......................................................... 9

5.1 General ..................................................9

5.2 Removing the valve from the pipeline.... 9

5.3 Replacing the gland packing.................. 9

5.4 Valve leakage.......................................10

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........... 19

10 DIMENSIONS AND WEIGHTS ...................... 20

10.1 Flange drilling and compatibility........... 27

11 TYPE CODE................................................... 28

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.

SAVE THESE INSTRUCTIONS!

Subject to change without notice. All trademarks are property of their respective owners.

2 LW 70 en 3

1 GENERAL

1.1 Scope of the manual

This installation, operation and maintenance manual provides essential information on series LW and LG Neldisc

triple eccentric disc valves. The actuators and instrumentation to be used with series LW and LG 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 the use of the valve or its suitability for your intended use, please contact Metso’s Automation business for more information.

1.2 Valve description

Neldisc series LW are wafer type and series LG are lug type metal seated triple eccentric disc valves.

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 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).

(1) (9)(8)(6)(5)(3)

ATTENTION: READ INSTRUCTIONS BEFORE INSTALLATION OR SERVICING. CONTACT METSO AUTOMATION FOR COPY.

BODY TRIM SHAFT SEAT

(2) (4) (7)

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

t max. t min.

TYPE No. RATING

MADE BY METSO AUTOMATION

XXXX

(10)

Fig. 1. Construction of a triple eccentric disc valve

4 2 LW 70 en

1.4 Technical specifications

Type: metal seated triple eccentric

disc valve LW: wafer type LG: lug type

Pressure class Body: LW6L, LW7L, LG6L, LG7L: PN 25, ISO PN 20, ASME150

LW8M, LG8M, LW5M, LG5M:

PN 40, ISO PN 50, ASME300

Trim: LW6L, LW7L, LG6L, LG7L:

Sizes DN 80-150: PN 25 Sizes DN 200-350: ISO PN 20 LW8M, LG8M, LW5M, LG5M: PN 40, ISO PN 50

Temperature range: -200 °C... +600 °C

(over 600 °C, please contact the manufacturer)

Flow direction: Free

Dimensions: See Section 10

Weights: See Section 10

1.5 Valve approvals

TA-Luft, chapter 3.1.8.4

Fire test to BS 6755 and API 607.

1.6 CE marking

The valve meets the requirements of the European Directive 97/23/EC relating to pressure equipment, and has been marked according to the Directive.

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.

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.

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 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, positioner, 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.

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°.

2 LW 70 en 5

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.

The recommended position of the perforated plate is at the "top" of the pipeline

Flow direction

Fig. 4. Position of the flow balancing trim

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.

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 intermediate positions will be eliminated.

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 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).

Select flange gaskets according to the operating conditions.

Do not attempt to correct pipeline misalignment by means of flange bolting.

Fig. 5. Mounting after a pipe elbow

Fig. 6. Mounting after the centrifugal pump

6 2 LW 70 en

Table 1. Minimum pipe inside dimensions (mm)

Valve size DN / NPS

80 / 3 100 / 4 125 / 5 150 / 6 200 / 8

250 / 10 300 / 12 350 / 14 400 / 16

LW6L, LW7L,

LG6L, LG7L

(mm / inch)

69 / 2.71

90 / 3.54 112 / 4.41 144 / 5.67 193 / 7.60 243 / 9.56

290 / 11.42 329 / 12.95 374 / 14.72

LW8M, LG8M,

LW5M, LG5M

(mm / inch)

69 / 2.72

90 / 3.54 112 / 4.41 143 / 5.63 190 / 7.48 241 / 9.49

287 / 11.30 321 / 12.64

315

Fig. 7. Minimum pipe inside dimensions

Fig. 8. Stud bolt lenght

Table 2. Stud bolt dimensions, DIN flanges (mm)

LW6L

80 M16 130 8 M16 130 8 M16 150 8 M16 140 4

100 M16 140 8 M16 140 8 M20 170 8 M16 150 8

125 M16 150 8 M16 150 8 M24 190 8 M20 160 8

150 M20 160 8 M20 160 8 M24 200 8 M20 160 8

200 M20 170 8 M20 170 12 M24 210 12 M20 170 8

250 M20 180 12 M24 180 12 M27 220 12 M24 200 12

300 M20 190 12 M24 200 12 M27 230 16 M24 210 12

350 M20 190 16 M24 200 16 M30 260 16 M27 220 12

400 M24 220 16 M27 240 16 M33 270 16 M27 250 16

LW7L

80 M16 130 8 M16 130 8 M16 150 8 M16 140 4

100 M16 140 8 M16 140 8 M20 170 8 M16 150 8

125 M16 150 8 M16 150 8 M24 190 8 M20 170 8

150 M20 170 8 M20 170 8 M24 200 8 M20 180 8

200 M20 180 8 M20 180 12 M24 210 12 M20 180 8

250 M20 190 12 M24 190 12 M27 220 12 M24 200 12

300 M20 200 12 M24 210 12 M27 230 16 M24 210 12

350 M20 200 16 M24 210 16 M30 260 16 M27 230 12

400 M24 220 16 M27 240 16 M33 270 16 M27 250 16

LW8M LW5M

Thread L Qty L1 Qty Thread L Qty L1 Qty Thread L Qty L1 Qty

80 M16 180 8

100 M20 190 8 M20 180 8 M20 200 8

125 M24 210 8 M24 200 8 M20 210 8

150 M24 220 8 M24 210 8 M20 220 12

200 M24 230 12 M27 240 12 M24 250 12

250 M27 270 12 M30 280 12 M27 300 12 170 8

300 M27 270 12 140 8 M30 290 12 150 8 M30 310 12 160 8

350 M30 300 12 150 8 M33 320 12 160 8 M30 330 16 160 8

400 M33 320 12 160 8 M36 350 12 170 8 M33 350 16 160 8

DIN PN 10 flange DIN PN 16 flange DIN PN 25 flange DIN PN 20 flange

Thread L Qty Thread L Qty Thread L Qty Thread L Qty

DIN PN 10 flange DIN PN 16 flange DIN PN 25 flange DIN PN 20 flange

Thread L Qty Thread L Qty Thread L Qty Thread L Qty

DIN PN 25 flange DIN PN 40 flange DIN PN 50 flange

Stud bolts pass the

body in the neck

area (length L)

M16 180 8

Stud bolts pass the

body in the neck

area (length L)

M20 190 8

Stud bolts pass the

body in the neck

area (length L)

2 LW 70 en 7

Table 2. continued

LG6L

80M16608708M16608708M16658758M1665475416

100M16658758M16658758M20758858M1670880819

125M16708808M16708808M24808908M2075885820

150M20758858M20758858M24858958M2075885820

200 M20 80 8 90 8 M20 80 12 90 12 M24 90 12 100 12 M20 80 8 90 8 23

250 M20 85 12 95 12 M24 85 12 95 12 M27 95 12 105 12 M24 95 12 105 12 26

300 M20 90 12 100 12 M24 95 12 105 12 M27 105 16 115 16 M24 100 12 11 12 30

350 M20 90 16 100 16 M24 95 16 105 16 M30 11 16 120 16 M27 105 12 115 12 35

400 M24 100 16 120 16 M27 110 16 130 16 M33 125 16 145 16 M27 115 16 135 16 38

LG7L

80M16608708M16608708M16658758M1665475416

100M16658758M16658758M20758858M1670880819

125 M16 65 8 85 8 M16 65 8 85 8 M24 80 8 100 8 M20 75 8 95 8 20

150 M20 75 8 95 8 M20 75 8 95 8 M24 85 8 105 8 M20 80 8 100 8 20

200 M20 80 8 100 8 M20 80 12 100 12 M24 90 12 110 12 M20 80 8 100 8 23

250 M20 85 12 105 12 M24 85 12 105 12 M27 95 12 115 12 M24 90 12 110 12 26

300 M20 90 12 110 12 M24 95 12 115 12 M27 105 16 125 16 M24 95 12 115 12 30

350 M20 90 16 110 16 M24 95 16 115 16 M30 110 16 130 16 M27 105 12 125 12 35

400 M24 100 16 120 16 M27 110 16 130 16 M33 125 16 145 16 M27 115 16 135 16 38

LG8M LG5M

80 M16 65 8 95 8 M16 65 8 95 8 M20 75 8 105 8 16

100 M20 70 8 100 8 M20 70 8 100 8 M20 75 8 105 8 19

150 M24 85 8 115 8 M24 85 8 115 8 M20 85 12 115 12 25

200 M24 90 12 120 12 M27 100 12 130 12 M24 105 12 135 12 34

250 M27 110 12 140 12 M30 120 12 150 12 M27 125 16 155 16 42

300 M27 110 16 140 16 M30 120 16 150 16 M30 135 16 165 16 45

350 M30 125 16 155 16 M33 135 16 165 16 M30 145 20 175 20 50

400 M33 135 16 165 16 M36 150 16 180 16 M33 155 20 185 20 55

DIN PN 10 flange DIN PN 16 flange DIN PN 25 flange DIN PN 20 flange L4

Thread L2 Qty L3 Qty Thread L2 Qty L3 Qty Thread L2 Qty L3 Qty Thread L2 Qty L3 Qty

DIN PN 10 flange DIN PN 16 flange DIN PN 25 flange DIN PN 20 flange L4

Thread L2 Qty L3 Qty Thread L2 Qty L3 Qty Thread L2 Qty L3 Qty Thread L2 Qty L3 Qty

DIN PN 25 flange DIN PN 40 flange DIN PN 50 flange L4

Thread L2 Qty L3 Qty Thread L2 Qty L3 Qty Thread L2 Qty L3 Qty

Table 3. Stud bolt dimensions, ASME flanges (inch/mm)

LW_

NPS / DN

3 / 80 5/8 UNC 6.30 / 160 4 3/4 UNC 7.87 / 200 8

4 / 100 5/8 UNC 6.69 / 170 8 3/4 UNC 8.26 / 210 8

5 / 125 3/4 UNC 7.48 / 190 8 3/4 UNC 8.66 / 220 8

6 / 150 3/4 UNC 7.87 / 200 8 3/4 UNC 9.05 / 230 12

8 / 200 3/4 UNC 7.87 / 200 8 7/8 UNC 10.23 / 260 12

10 / 250 7/8 UNC 8.66 / 220 12 1 UNC 11.81 / 300 14 6.69 / 170 4

12 / 300 7/8 UNC 9.05 / 230 12 1 1/8-8 UN 12.20 / 310 12 6.30 / 160 8

14 / 350 1 UNC 9.84 / 250 12 1 1/8-8 UN 12.99 / 330 16 6.30 / 160 8

16 / 400 1 UNC 10.63 / 270 16 1 1/4-8 UN 14.17 / 360 16 6.69 / 170 8

LG _

NPS / DN

3 / 80 5/8 UNC 2.36 / 60 4 3.15 / 80 4 0.63 / 16 3/4 UNC 2.75 / 70 8 3.54 / 90 8 0.63 / 16

4 / 100 5/8 UNC 2.56 / 65 8 3.34 / 85 8 0.75 / 19 3/4 UNC 2.95 / 75 8 3.74 / 95 8 0.75 / 19

5 / 125 3/4 UNC 2.75 / 70 8 3.54 / 90 8 0.78 / 20 - - - - - -

6 / 150 3/4 UNC 2.75 / 70 8 3.54 / 90 8 0.78 / 20 3/4 UNC 3.54 / 90 12 3.93 / 100 12 0.98 / 25

8 / 200 3/4 UNC 2.95 / 75 8 3.74 / 95 8 0.90 / 23 7/8 UNC 4.33 / 110 12 4.33 / 110 12 1.34 / 34

10 / 250 7/8 UNC 3.34 / 85 12 4.13 / 105 12 1.02 / 26 1-8 UN 4.92 / 125 16 4.92 / 125 16 1.65 / 42

12 / 300 7/8 UNC 3.54 / 90 12 4.33 / 110 12 1.18 / 30 1 1/8 UN 5.31 / 135 16 5.31 / 135 16 1.77 / 45

14 / 350 1-8 UN 4.13 / 105 12 4.92 / 125 12 1.37 / 35 1 1/8 UN 5.51 / 140 20 5.51 / 140 20 2.20 / 56

16 / 400 1-8UN 4.52 / 115 16 5.31 / 135 16 1.49 / 38 1 1/4-8 UNC 6.30 / 160 20 6.69 / 170 20 2.40 / 61

LW6L, LW7L, ASME 150 flange LW5M, ASME 300 flange

Thread L Qty Thread L Qty L1 Qty

Stud bolts pass the

body in the neck area

(length L)

LG6L, ASME 150 flange LG5M, ASME 300 flange

T h r e a d L 2 Q t y L 3 Q t y L 4 Th r e a d L 2 Q t y L 3 Q t y L 4

8 2 LW 70 en

Table 4. Stud bolt dimensions, ISO flanges (mm)

LW_

80 M16 140 4 M20 160 8 Stud bolts pass the

100 M16 150 8 M20 170 8

125 M20 160 8 - - - - -

150 M20 160 8 M20 190 12 Stud bolts pass the

200 M20 170 8 M24 220 12

250 M24 190 12 M27 250 14 100 4

300 M24 200 12 M30 270 12 120 8

350 M27 230 12 M30 280 16 120 8

400 M27 250 16 M33 330 16 140 8

LG_

80M1660480416M2070890816

100M1665885819M2075895819

125M2070890820------

150 M20 70 8 90 8 20 M20 90 12 100 12 25

200 M20 75 8 95 8 23 M24 110 12 110 12 34

250 M24 85 12 105 12 26 M27 125 16 125 16 42

300 M24 90 12 110 12 30 M30 135 16 135 16 45

350 M27 105 16 125 16 35 M30 140 20 140 20 56

400 M27 115 16 135 16 38 M33 160 20 170 20 61

LW6L, ISO PN 20 flange LW5M, ISO PN 50 flange

Thread L Qty Thread L Qty L1 Qty

body in the neck area

(length L)

body in the neck area

(length L)

LG6L, ISO PN 20 flange LG5M, ISO PN 50 flange

Thread L2 Qty L3 Qty L4 Thread L2 Qty L3 Qty L4

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.

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. 2 and Tables 2...4.

Ensure that the disc can turn to the open position after preliminary 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 Table 2 are based on:

❑ gasket thickness of 1.5 mm ❑ heavy nuts with washers ❑ flange thickness of weldneck flanges per DIN or

ISO

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 Figure 9.

Insulation limit

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 highcapacity 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 packing construction is live loaded. So tightening the packing screws during service is not necessary.

Fig. 9 Insulation of the valve

2 LW 70 en 9

5 SERVICE

CAUTION: Observe the safety precautions listed in Section

1.8 before starting work!

CAUTION: For safety reasons the retaining plates MUST always be installed according to Section 5.3.

5.1 General

Triple eccentric disc valves require no regular maintenance. If the valve should require maintenance for some reason, a few simple service measures are normally sufficient.

The numbers in parentheses refer to the par ts list and the exploded view of the valve in Section 9.

NOTE:

If you send the valve to the manufacturer for repair, do not dismantle it. Clean the valve carefully, including the inside. For safety reasons, inform the manufacturer of the type of medium used in the valve.

❑ 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

surfaces of the packing ring counterbore and shaft. It is not necessary to change anti-extrusion ring (22).

❑ Clean the gland packing and packing ring coun-

terbore. 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).

NOTE:

Always use original spare parts to ensure that the valve functions as intended.

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. Lift valve correctly (see Fig. 3).

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.

Fig. 10. 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 (h

) as in Table 5.

1–h2

❑ Carry out 3…5 operation cycles with the valve.

Suitable 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 h

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 (h

) of disc springs is

1–h2

achieved, see Table 5.

Table 5. Tightening of gland packing

LW6L, LG6L, LW7L,

LG7L

DN DN mm M Graphite +

80 80 20 M8 2.0 1.0

100, 125, 150 100, 125 20 M8 2.5 1.5

200 150 25 M10 2.5 1.5

250 25 M10 3.0 1.5

300 200 25 M10 3.0 2.0

350 25 M10 3.0 2.0

400 250 35.5 M14 4.0 3.0

LW8M, LG8M, LW5M,

LG5M

300 35.5 M14 4.5 3.0

350, 400 35.5 M14 4.5 3.0

Spring set

dia

Thread Compression (h1–h2),

Packing ring material

PTFE

10 2 LW 70 en

❑ Ensure that the valve is not pressurized.

dia

❑ 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).

disc spring set (44)

packing (20) V-ring set or

graphite packing

anti-extrusion ring (22)

stud (24) hexagon nut (25)

retainer plate (42) gland (9)

❑ 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

surface of the seat ring.

Fig. 11. Gland packing

❑ If the leakage still occurs when the valve is pres-

surized, 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. 12).

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.

If the reason for the leakage does not become apparent after doing the above, the valve must be disassembled for replacing the parts.

open

closed

Fig. 12. Open and closed positions of the valve

5.5 Replacing the seat ring

CAUTION: Do not dismantle the valve or remove it from the pipeline while the valve is pressurized!

Fig. 13. Mounting the body seal

❑ 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. 13.

❑ 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) crosswise and evenly.

Recommended torque values for screws are listed in Table 6. An unevenly tightened flange may damage the seat ring. The screw heads must be below the flange surface in lug type valves.

Table 6. Clamp ring screw torque

Screw Torque, Nm

M6 9

M8 16

M10 25

M12 37

M14 50

M16 70

❑ Check the position between the seat ring and the

disc. The valve closes clockwise (see Fig. 12).

❑ Mount the actuator into the valve. Adjust the

closed position limit and check the open position limit (see Section 6.4).

2 LW 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 actu-

ator from the valve.

❑ Remove the clamp ring (2) and seat ring (4)

according to section 5.4.

❑ Set the valve horizontally on a sturdy surface so

that the flat side of the disc lays against the surface (see Fig. 14).

❑ 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-extrution-

ring (22) and sheet ring (21) 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. 15).

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 (N and Hconstructions) are cobalt alloy bushings which are mounted into the body together with the shafts.

❑ Mount the bearings into the body (see Fig. 16). ❑ High temperature-construction: Mount the bear-

ing into the shaft. Spray a thin layer of dry lubricat-

ing 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. 17). ❑ 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. Pro-

tect the disc (see Fig. 15). ❑ Press the shafts into the disc drillings. Align the

pin holes. The shaft (11) position against the disc

must be according to Fig. 12.

Fig. 14. Drilling the pins

Fi g. 15. Protecting the disc during disassembly and assembly

❑ 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

Fig. 16. Mounting the standard bearings

Fig. 17. Mounting the metal bearings

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 dur-

ing mounting of the pins. Push the new pins into

the holes and press them in a press to final form

12 2 LW 70 en

(see Fig. 18). Use a smaller tool than the pin diameter. See Table 7 for forces.

Fig. 18. Pressing the pins

Table 7. Pressing the pins, forces

Pin diameter ,

54510125

66012180

88015280

Force, kN Pin diameter,

Force, kN

❑ 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. 12).

6 DETACHING AND INSTALLING THE

ACTUATOR

6.1 General

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!

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. 19).

❑ Remove the bracket and coupling, if any.

Fig. 19. Pressing the pins

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 8.

❑ Detach the actuator finally from the valve after the

screws that attach the actuator to the valve have been removed.

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.

The actuator is factory-mounted on the valve and the

Fig. 20. Detaching the EC/EJ actuator

6.4 Installing the B1 series actuator

❑ Turn the valve to the closed position before

mounting the actuator.

2 LW 70 en 13

Table 8. Bushing dimensions

Actuator

EC/EJ05 24,5 12,5 15 EC/EJ07 24,5 16,5 32,75 EC/EJ10 24,5 20,5 45 EC/EJ12

Outer dim. (mm)

Inner dim. (mm)

Height (mm)

❑ 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-toclose), 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 lim-

ited 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.

according to Fig. 23. Insert cylindrical pins (III) in

the bushing slots, these must be directed into the

corresponding slots in the actuator during tight-

ening. Before the installation of the bushing and

the tightening screw, remove impurities such as

old threadlocking material from the threads of the

tightening screw, and apply Loctite 243 or similar

threadlock carefully to the threads, as shown in

Fig. 23. Turn the tightening screw from inside the

actuator shaft using a suitable hex key, Fig. 23. ❑ Prior to installation, the correct shaft position of

the valve has to be checked. In the key-type

bushing there are 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 bushing halves,

and the ANSI keyway is located in the middle of

the half bushing. Fig. 22 shows the keyway posi-

tion 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. 20, or by checking the position of the pointer

at the end of the drive shaft. The actuator is closed

if the pointer on the coupling plate is transverse to

the direction of the actuator’s main shaft. ❑ In the bushing having blade head connection

checking the right position is more simple. Use

the pointer in the end of the drive shaft to see the

correct position. ❑ 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.

DIN keyways at bushing split

6.5 Installing EC and EJ actuators

The actuator is attached to a bracket via an ISO 5211 standard 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.

Stop screw for closed position

Opening pressure

Fig. 21. Actuator connections

❑ Mount the bushing and the tightening screw from

the mounting interface side of the actuator,

Closing pressure

Stop screw for open position

ACTUATOR IN CLOSED POSITION

ANSI keyways in the middle of bushing

Fig. 22. Keyway positions on the actuator

❑ The actuator construction allows axial movement

of the drive shaft. 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 9 (see Fig.

23).

14 2 LW 70 en

6.6 Detaching and installing other

Key

See actuator’s manual for details.

actuator types

6.7 Stop screw adjustment

Loctite 225 or similar

Fig. 23. Cone bushing installation

❑ The drive shaft will automatically find its correct

position when the tightening screw is tightened, if the installation tool is used (see Figure 23). The installation tool is attached instead of the coupling plate using M4 screws with the drive shaft in upper position (before the valve is installed). Tighten the screws in such a way that the tool is tightened against the upper surface of the housing.

❑ Install the actuator on the valve and attach the

attachment screws normally. Finally, tighten the tightening screw according to Table 9. 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 reattached. The

valve may malfunction if the tightening of the connection has been carried out improperly.

❑ Finally, the extreme positions of the valve are

adjusted with the stop screws at the ends of the actuator. The location of the screws for adjusting the Close and Open positions of the valve are marked with letters on the ends of the actuator housing (see Figure 21).

Installation tool

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 11 and 12 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.

6.7.2 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.

NOTE:

Metso accepts no responsibility for compatibility of actuators not installed by Metso.

6.7.3 Changing the mounting position

CAUTION: The actuator must not be removed from the valve in a pipeline under pressure as 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.

Fig. 24. Tightening of the cone bushing

Table 9. Mounting faces, tightening screws and drive

shaft clearances

Size Mounting Thread Key Nm ~X

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

upper pos.

(mm)

lower pos.

(mm)

Fig. 25. Changing the mounting position

2 LW 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°.

Stop screw for the closed position

Stop screw for the open position

Fig. 26. Cylinder actuator, series B1C

Stop screw for the closed position

Stop screw for the open position

Fig. 27. Cylinder actuator, series B1J

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°.

Stop screw for the closed position

6.7.5 Double-acting diaphragm actuator EC

Follow instructions given in Section 6.7.4. See also Fig. 21.

6.7.6 Spring-return cylinder actuator B1J

"Spring-to-close"

❑ Before mounting the cylinder, screw in the closed

position stop screw completely.

❑ The table 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 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 actuator clockwise.

❑ An extra long screw is needed for opening

angles < 80°.

Stop screw for the open position

Fig. 28. Cylinder actuator, series B1JA

6.7.8 Spring-return diaphragm actuator EJ

"Spring-to-close"

Follow instructions given in Section 6.7.6. See also Fig. 21.

"Spring-to-open"

Follow instructions given in Section 6.7.7. See also Fig. 21.

6.7.9 M-series operator

❑ Close the valve as per the tabulated primary

torque M1 (handwheel torque) given in Tables 11

and 12. ❑ Tighten the closed position stop screw until it

touches the linkage, then turn back 1/4 turn and

lock up with Loctite 225.

Stop screw for the open position

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 housing). Apply tabulated shut-off pressure Pc to

Stop screw for the closed position

Fig. 29. Actuator, series M

16 2 LW 70 en

6.7.10 Hand lever RH

❑ Mount the hand lever on the valve, but do not fas-

ten hex screws (A). Turn the lever using force F in Table 10.

❑ When closing torque is applied, turn the housing

(B) cog of the closing limit to contact with the lever arm. Fasten hex screws (A).

Fig. 30. Hand lever, series RH

Table 10. Hand lever RH, adjustment values

Size L L1 Torque Force

DN mm mm Nm Lbf ft N Lbf

80 400 350 40 30 115 26

100 400 350 70 52 200 45

125 400 350 100 74 285 63

150 500 450 135 100 300 67

6.7.11 Electric operator

Instructions for adjustment are given in a separate leaflet, code D304568, which is available from the manufacturer.

Fig. 31. Electric operator

7TOOLS

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.

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.

2 LW 70 en 17

Table 11. Series LW6L, LW7L, LG6L and LG7L,

closing torques

Input

torque M1

Manual

operator

open

Spring to

Q-P

actuator

**)

Lpc

EJA

4.9 71

*)spring

4.5 65

*)spring

4.6 67

*)spring

EC and EJ

**)

BJVA

BJV

**)

BJKA

BJK

**)

BJA

SIZE

5.3 77 7 QP4C 1 14 3.3 48 AR11 12 9

*)spring

3.3 48 0.6 9 4.6 68 7 QP3C 0.8 12 3.5 51 AR11 6 4

*)spring

3.2460.8124.362 10 4.667

*)spring

4.5 65 3.8 55

*)spring

5.6 81 5 QP4C 4.3 62 M07 26 19

*)spring

572 4.464

*)spring

5.5 80 7 QP5C 0.1 1 4.1 59 M10 43 32

*)spring

3.2460.8124.668 10 AR11 24 18

*)spring

4.6 67 4 58

*)spring

4.2 61 3.6 52 0.3 4 5 73 10 M14 51 38

*)spring

5.7 83 M14 72 53

*)spring

6.8 99 M14 125 92

*)spring

3.1450.8124.261

*)spring

4.9 71 4.3 62

*)spring

4.2 61 3.6 52 0.3 4 4.7 68 AR31 70 52

*)spring

SIZE

Mc BC and BJ

SIZE

(Nm) (lbf f t ) (bar) (psi) (bar) (psi) (bar) (psi) (bar) (psi) (bar) (psi) (bar) (psi) (bar) (psi) (bar) (psi) (bar) (psi) (bar) (psi) (bar) (psi) (bar) (psi) (Nm) (lbf ft)

62.536 5 QP2C0.693.652 M07 4 3

6687 5 QP3C0.343.957 M07 10 7

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 AR11 4 3

10 1.6 23 1.1 16 2.8 41 0.7 10 2.2 32 1.6 23 3.4 49 10

45 33

92.130 10 2.3330.7103.754

64.159 5QP2C4.362M0775

8 3.4 49 0.2 3 3.8 55

10 1.9 28 0.9 13 3.1 45 0.5 7 2.6 38 1.4 20 3.7 54 12

75 55

100

8572

11 1.1 16 14

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

110 80

125

6 8.2 119 5QP3C4.362M071410

11 1.5 22 14

94.159 7QP4C0.8123.551AR11129

12 1.3191.116 3 430.7102.2321.6233.754

10 3.3 48 0.2 3 3.8 55

11 2.1 30 12 1.9280.8123.652

12 1.6 23 0.9 13 3.1 45 0.5 7 2.6 38 1.5 22 3.9 57 14

10 6.5 94

150 110

150

13 2.1 30 12 3.8 55

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

300 220

200

12 5.5 80

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

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 AR11 40 30

500 370

10"

250

17 1.8 26 14 2.6380.5 7 3.754

16 4.5 65

13 5.8 84 7 M12 69 51

16 6.4 93

17 3 43 12 AR21 50 37

17 4.2 61 AR11 70 52

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

825 610

12"

300

350

16 9.5 138 5.9 86 5.2 75

20 3.3 48 0.3 4 3.7 54

1160 860

14"

17 6 87 M15 80 59

20 4.7 68

25 1.7 25 0.9 13 3.1 45 0.5 7 2.6 38 1.4 20 3.6 52

25 2.4 35 0.6 9 3.4 49 0.2 3 2.8 41 1.1 16 3.9 57 (AR21) 95 70

1650 1220

16"

400

*) spring = spring torque not adequete to reach tightness according to ISO 5208 Rate D, BS 6755 Par t 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 LW 70 en

Table 12. Series LW8M, LG8M, LW5M and LG5M,

closing torques

Input

torque M1

Manual

operator

open

Spring to

Q-P

actuator

**)

EJA

5.5 80 AR11 37 27

*)spring

4.5 65

*)spring

SIZE

EC and EJ

**)

BJVA

BJV

**)

BJKA

BJK

**)

BJA

5.3 77 7 QP4C 1 14 3.3 48 AR11 9 7

*)spring

3.3 48 0.6 9 4.6 68 7 QP3C 0.8 12 3.5 51 M07 7 5

*)spring

4.5 65 3.8 55

*)spring

4.4 64 3.8 55 0.1 1 5 73 5 QP4C 0.3 4 3.9 57 M07 20 15

*)spring

4.4 64 3.8 55 0.1 1 5.3 77 7 M12 38 28

*)spring

4.2 61 3.6 52 0.4 6 4.9 71 10 AR21 50 37

*)spring

3.2 46 0.7 10 4.3 62 M16 44 32

*)spring

*)spring 3.2 46 0.7 10 4.3 62 M16 94 69

4.3 62 3.7 54 0.2 3 4.8 70 M16 62 46

*)spring

SIZE

Mc BC and BJ

SIZE

6687 5 QP3C0.343.957 M07 10 7

62.536 5 QP2C 0.6 9 3.6 52 AR11 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 M07 4 3

64.159 5 QP2C 4.3 62 AR11 6 4

8 3.4 49 0.2 3 3.8 55

92.130 10 2.3330.7103.754

75 55

100

10 1.9 28 0.9 13 3.1 45 0.5 7 2.6 38 1.4 20 3.7 54 12

10 1.6 23 1.1 16 2.8 41 0.7 10 2.2 32 1.6 23 3.4 49 10

45 33

(Nm) (lbf f t ) (bar) (psi) (bar) (psi) (bar) (psi) (bar) (psi) (bar) (psi) (bar) (psi) (bar) (psi) (bar) (psi) (bar) (psi) (bar) (psi) (bar) (psi) (bar) (psi) (Nm) (lbf ft )

8572

11 1.1 16 14

9343 10 3.4490.1 1 4.261

110 80

125

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

10 5 72

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 AR11 20 15

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

11 6.4 93 5 QPC50.343.957 M10 4029

12 5 72

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

230 170

150

460 340

200

17 1.7 25 14 2.4350.6 9 3.652

13 5.6 81 7 M14 49 36

16 4.4 64

20 1.4 20 1 14 2.9 42 0.6 9 2.3 33 1.5 22 3.5 51

17 4.6 67 1 M15 61 45

17 2.9 42 12

20 3.6520.2 3 3.855

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

800 590

10"

250

300

17 6.4 93 M15 85 63

25 1.8 26 0.8 12 3.2 46 0.4 6 2.6 38 1.3 19 3.7 54 AR21 75 55

20 5 72

32 1 15

1250 920

12"

350

25 2.6 38 0.6 9 3.4 49 0.2 3 2.9 42 1.1 16 3.9 57 AR31 75 55

1750 1290

14"

25 3.6520.2 3 3.855

32 1.8 26 0.8 12 3.2 46 0.4 6 2.5 36 1.3 19 3.8 55 M25 91 67

32 1.3 19 1 14 2.9 42 0.6 9 2.3 33 1.5 22 3.6 52

40 0.9 13 AR31/41 110 80

2500 1840

16"

400

*) 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 LW 70 en 19

9 EXPLODED VIEW AND PARTS LIST

Item Qty Description Spare part category

11Body 2 1 Clamp ring 3 1 Disc 3 4 1 Seat 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 22 1 Anti-extrusion ring 24 2 Stud 25 2 Hexagon nut 26 Hexagon screw 27 Hexagon socket screw 29 1 Identification plate 42 2 Retaining plate 44 2 Disc spring set

Spare part 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

20 2 LW 70 en

10 DIMENSIONS AND WEIGHTS

DN 80 - 125

DN 350 - 400

DN 150 - 400

A1 A

øB

LW6LB, LW7LB, key connection

DN Dimensions, mm U

A1 LW6L

A (K1)

LW7L

A (K2)

BCEKST ORMNP

ThreadVThread

80 18 46 49 128 80 168 248 70 - M10 M8 15 105 4.76 25 17.0 4

100 20 52 56 158 100 182 272 90 - M12 M8 20 125 4.76 35 22.2 6

125 22 56 64 190 135 205 295 90 - M12 M8 20 125 4.76 35 22.2 9

150 23 56 70 212 150 227 317 110 32 M12 M8 20 125 4.76 35 22.2 15

200 24 60 71 268 160 257 347 110 32 M12 M10 25 135 6.35 46 27.8 20

250 29 68 76 320 210 290 400 130 32 M12 M10 30 160 6.35 51 32.9 30

300 32 78 83 378 275 320 430 130 32 M12 M10 35 160 9.52 58 39.1 45

350 36 92 92 438 290 355 475 160 40 M16 M10 40 188 9.52 68 44.2 70

400 44 102 102 485 320 405 525 160 40 M16 M14 45 200 12.7 80 50.4 95

Dimensions, mm Weight

DN 80 - 125

DN 150 - 400

DN 250 - 400

øB

A1 A

LW8MB, LW5MB key connection

DN Dimensions, mm U

A1 LW8M

A (K3)

LW5M

A (API)

BCEKST ORMNP

ThreadVThread

80 18 64 48 128 80 168 248 70 - M10 M8 15 105 4.76 25 17.0 4

100 20 64 54 158 100 182 272 90 - M12 M8 20 125 4.76 35 22.2 6

125 20 70 56 158 100 182 272 90 - M12 M8 20 125 4.76 35 22.2 6

150 27 76 59 218 145 232 322 110 32 M12 M10 25 135 6.35 46 27.8 20

200 34 89 73 276 205 274 384 130 32 M12 M10 35 165 9.52 58 39.1 38

250 41 114 83 335 260 320 440 160 40 M16 M14 45 200 12.7 80 50.4 60

300 46 114 92 395 300 360 500 160 55 M20 M14 50 230 12.7 90 55.5 85

350 57 127 117 450 330 400 540 160 55 M20 M14 55 230 12.7 90 60.6 105

400* 66 140 133 505 370 440 580 160 55 M20 M14 55 230 12.7 90 60.6 125

*) DN 400 has a reduced bore and uses the same disc as DN 350

Dimensions, mm Weight

2 LW 70 en 21

DN 80 - 125

FLANGE DRILLINGS

DN 150 - 400

A1 A

LG6LB, LG7LB, key connection

DN Dimensions, mm U

A1 LG6L

A (K1)

LG7L

B C E K S T PN 10 PN 16 PN 25 ISO PN 20 O R M N P

A (K2)

ThreadVThread

Thread Qty Thread Qty Thread Qty Thread Qty

80 17 46 49 205 120 168 248 70 - M10 M8 M16 8 M16 8 M16 8 M16 4 15 105 4.76 25 17.0 9

100 21 52 56 235 135 182 272 90 - M12 M8 M16 8 M16 8 M20 8 M16 8 20 125 4.76 35 22.2 14

150 22 56 70 300 160 227 317 110 32 M12 M8 M20 8 M20 8 M24 8 M20 8 20 125 4.76 35 22.2 24

200 25 60 71 360 185 257 347 110 32 M12 M10 M20 8 M20 12 M24 12 M20 8 25 135 6.35 46 27.8 34

250 28 68 76 425 220 290 400 130 32 M12 M10 M20 12 M24 12 M27 12 M24 12 30 160 6.35 51 32.9 43

300 32 78 83 485 275 320 430 130 32 M12 M10 M20 12 M24 12 M27 16 M24 12 35 160 9.52 58 39.1 75

350 36 92 92 555 310 355 475 160 40 M16 M10 M20 16 M24 16 M30 16 M27 12 40 188 9.52 68 44.2 95

400 41 102 102 610 340 405 525 160 40 M16 M12 M24 16 M27 16 M33 16 M27 16 45 200 12.7 80 50.4 150

Flange drillings Dimensions, mm Wt.

DN 80 - 100

FLANGE DRILLINGS

DN 150 - 400

LG8MB, LG5MB key connection

DN Dimensions, mm U

A1 LG8M

A (K3)

LG5M

B C E K S T PN 25 PN 40 ISO PN 50 O R M N P

A (API)

ThreadvThread

Thread Qty Thread Qty Thread Qty

80 17 64 48 205 120 168 248 70 - M10 M8 M16 8 M16 8 M20 8 15 105 4.76 25 17.0 9

100 21 64 54 235 135 182 272 90 - M12 M8 M20 8 M20 8 M20 8 20 125 4.76 35 22.2 14

150 24 76 59 290 160 232 322 110 32 M12 M10 M24 8 M24 8 M20 12 25 135 6.35 46 27.8 25

200 34 89 73 365 205 274 384 130 32 M12 M10 M24 12 M27 12 M24 12 35 165 9.52 58 39.1 48

250 41 114 83 435 260 320 440 160 40 M16 M14 M27 12 M30 12 M27 16 45 200 12.7 80 50.4 90

300 46 114 92 500 300 360 500 160 55 M20 M14 M27 16 M30 16 M30 16 50 230 12.7 90 55.5 150

350 57 127 117 565 330 400 540 160 55 M20 M14 M30 16 M33 16 M30 20 55 230 12.7 90 60.6 200

400* 62 140 133 649 370 440 580 160 55 M20 M14 M33 16 M36 16 M33 20 55 230 12.7 90 60.6 290

*) DN 400 has a reduced bore and uses the same disc as DN 350

Flange drillings Dimensions, mm Wt.

22 2 LW 70 en

LW6LB, LW7LB + M series

Valve DN Actuator

80 M07/F07 49 49 128 80 390 205 120 430 196 152 - - 275 39 125 8 13

100 M07/F07 52 56 158 100 435 235 135 470 196 152 - - 299 39 125 10 18

LW6 L /

LW7 L /

125 M07/F07 56 64 190 135 495 - - - 196 152 - - 322 39 125 13 24

150 M07/F07 56 70 212 150 530 300 160 540 196 152 - - 344 39 125 19 28

LG 6L

200 M10/F10 or M10E/F10 60 71 268 160 580 360 185 605 227 169 297 239 387 52 200 26 40

250 M12/F12 or M12E/F12 68 76 320 210 695 425 220 705 285 210 357 282 440 67 250 42 55

LG 7L

300 M14/F14 or M14E/F14 78 83 378 275 805 485 275 805 378 279 435 354 480 90 457 65 95

350 M14/F16 or M14E/F16 92 92 438 290 865 555 310 885 378 279 435 354 525 90 457 95 120

400 M16/F16 or M16E/F16 102 102 485 320 970 610 340 990 549 391 642 466 575 154 610 140 195

ISO 5211 A

A (K1)

LG8M, LG5M+ M series

L_6

MOUNTING POSITION B (STANDARD)

**)

L_7

A (K2)

B C H B C H F1 G1 F2 (* G2 (* J V Z

LW_ LG_ Dimensions, mm LW_LMkgLG_LM

øZ

*) G2

*) F2

Valve DN Actuator

80 M07/F07 64 48 128 80 390 205 120 430 196 152 - - 275 39 125 8 13

100 M07/F07 64 54 158 100 435 235 135 470 196 152 - - 299 39 125 10 18

LW8M /

LG8 M

LW5M /

LG5 M

*) DN 400 has a reduced bore and uses the same disc as DN 350

150 M10/F10 or M10E/F10 76 59 218 145 540 290 160 555 227 169 297 239 327 52 200 26 31

200 M14/F14 or M14E/F14 87 73 278 205 670 365 205 670 378 279 435 354 414 90 457 58 68

250 M14/F16 or M14E/F16 114 83 335 260 800 435 260 800 378 279 435 354 490 90 457 80 110

300 M15/F16 or M15E/F16 114 92 395 300 910 500 300 910 457 331 532 406 550 123 457 120 185

350 M15/F16 or M15E/F16 127 117 450 330 980 565 330 980 457 331 532 406 590 123 457 140 235

400* M15/F16 or M15E/F16 140 133 505 370 1060 650 370 1060 457 331 532 406 630 123 457 160 325

ISO 5211

L_8

A (K3)

L_5

A (API)

LW_ LG_ Dimensions, mm LW8_MkgLG8_M

B C H B C H F1 G1 F2 (* G2 (* J V Z

øK

LW6LB, LW7LB + RH

Valv e DN Handlever L_6 (K1) L_7 (K2) LW_ LG_ Dimensions, mm LW_L-RHkgLG_L-RH

AABCHBCHJKL

LW6L / LG6L

LW7L / LG7L

80 RH415 49 49 128 80 355 205 120 395 275 100 400 5 10

100 RH420 52 56 158 100 410 235 135 445 310 100 400 7 15

125 RH420 56 64 190 135 495 270 145 505 330 100 400 11 22

150 RH520 56 70 212 150 530 300 160 540 370 130 500 17 26

2 LW 70 en 23

LW6LB, LW7LB + B1C

Valve DN Actuator L_6

80 B1C9 46 49 128 80 445 205 120 485 450 315 220 307 43 110 1/4 20 25

100 B1C9 52 56 158 100 490 235 135 525 450 315 220 331 43 110 1/4 22 30

100 B1C11 52 56 158 100 510 235 135 545 535 375 225 337 51 135 3/8 28 36

125 B1C9 56 64 190 135 550 - - - 450 315 220 351 43 110 1/4 25 38

125 B1C11 56 64 190 135 570 - - - 535 375 225 360 51 135 3/8 31 44

150 B1C9 56 70 212 150 585 300 160 595 450 315 220 376 43 110 1/4 34 43

150 B1C11 56 70 212 150 605 300 160 615 535 375 225 382 51 135 3/8 40 49

150 B1C13 56 70 212 150 640 300 160 650 640 445 240 398 65 175 3/8 55 64

LW6 L /

LG 6L

LW7 L /

LG 7L

200 B1C11 60 71 268 160 645 360 185 670 535 375 225 412 51 135 3/8 45 59

200 B1C13 60 71 268 160 680 360 185 705 640 445 240 428 65 175 3/8 60 74

200 B1C17 60 71 268 160 715 360 185 740 785 555 255 443 78 215 1/2 83 97

250 B1C13 68 76 320 210 785 425 220 795 640 445 240 481 65 175 3/8 71 84

250 B1C17 68 76 320 210 820 425 220 830 785 555 255 496 78 215 1/2 94 107

300 B1C13 78 83 378 275 880 485 275 880 640 445 240 511 65 175 3/8 86 116

300 B1C17 78 83 378 275 915 485 275 915 785 555 255 526 78 215 1/2 110 140

300 B1C20 78 83 378 275 935 485 275 935 880 590 270 545 97 215 1/2 128 158

350 B1C17 92 92 438 290 975 555 310 995 785 555 255 571 78 215 1/2 135 160

350 B1 C20 92 92 438 290 995 55 5 3 10 1015 880 590 2 70 590 97 215 1 /2 145 180

350 B1 C25 92 92 438 290 1040 555 310 1060 1075 725 310 6 13 121 265 1/2 215 240

400 B1 C20 10 2 1 02 485 320 1075 610 340 1095 880 590 270 6 40 97 21 5 1/2 1 80 235

400 B1 C25 10 2 1 02 485 320 1120 610 340 1140 1075 725 310 663 121 265 1/2 240 29 5

A (K1)

LW8MB, LW5MB + B1C

L_7

A (K2)

NPT

1/4 NPT

BCHBCHFGI JVX

MOUNTING POSITION B (STANDARD)

LW_ LG_ Dimensions, mm NPT LW_L-

LG_L-

B1C

Valve DN Actuator L_8

80 B1C9 64 48 128 80 445 205 120 485 450 315 220 307 43 110 1/4 21 26

100 B1C9 64 54 158 100 490 235 135 525 450 315 220 331 43 110 1/4 23 31

100 B1C11 64 54 158 100 510 235 135 545 535 375 225 337 51 135 3/8 29 37

150 B1C9 76 59 218 145 605 290 160 620 450 315 220 387 43 110 1/4 36 41

150 B1C11 76 59 218 145 640 290 160 655 535 375 225 403 51 135 3/8 42 47

150 B1C13 76 59 218 145 675 290 160 690 640 445 240 418 65 175 3/8 58 63

200 B1C11 89 73 278 205 745 365 205 745 535 375 225 445 51 135 3/8 60 70

LW8 M /

LG 8M

LW5 M /

LG 5M

*) DN 400 has a reduced bore and uses the same disc as DN 350

200 B1C13 89 73 278 205 780 365 205 780 640 445 240 460 65 175 3/8 76 86

200 B1C17 89 73 278 205 795 365 205 795 785 555 255 479 78 215 1/2 100 110

250 B1C17 114 83 335 260 910 435 260 910 785 555 255 536 78 215 1/2 120 150

250 B1C20 114 83 335 260 930 435 260 930 880 590 270 555 97 215 1/2 140 170

250 B1C25 114 83 335 260 975 435 260 975 1075 725 310 578 121 265 1/2 200 230

300 B1C20 114 92 395 300 1030 500 300 1030 880 590 270 615 97 215 1/2 230 165

300 B1C25 114 92 395 300 1075 500 300 1075 1075 725 310 638 121 265 1/2 225 290

350 B1C20 127 117 450 330 1100 565 330 1100 880 590 270 655 97 215 1/2 185 280

350 B1C25 127 117 450 330 1145 565 330 1145 1075 725 310 678 121 265 1/2 245 340

400* B1C20 140 133 505 370 1180 649 370 1180 880 590 270 695 97 215 1/2 205 370

400* B1C25 140 133 505 370 1225 649 370 1225 1075 725 310 718 121 265 1/2 265 430

A (K3)

L_5

A (API)

LW_ LG_ Dimensions, mm NPT LW_M-

BCHBCHFGI JVX

B1C

LG_M-

B1C

24 2 LW 70 en

MOUNTING POSITION B (STANDARD)

LW6LB, LW7LB + B1J

Valve DN Actuator L_6

80 B1J8 49 49 128 80 460 205 120 500 555 420 220 307 43 135 3/8 27 32

100 B1J8 52 56 158 100 505 235 135 540 555 420 220 331 43 135 3/8 29 37

100 B1J10 52 56 158 100 530 235 135 565 640 480 225 337 51 175 3/8 42 50

125 B1J8 56 64 190 135 560 - - - 555 420 220 351 43 135 3/8 32 45

125 B1J10 56 64 190 135 585 - - - 640 480 225 360 51 175 3/8 45 58

150 B1J8 56 70 212 150 600 300 160 610 555 420 220 376 43 135 3/8 41 50

150 B1J10 56 70 212 150 625 300 160 635 640 480 225 382 51 175 3/8 54 63

150 B1J12 56 70 212 150 660 300 160 670 815 620 240 398 65 215 1/2 81 90

LW6L /

LG 6L

LW7L /

LG7 L

200 B1J10 60 71 268 160 665 360 185 690 640 480 225 412 51 175 3/8 59 73

200 B1J12 60 71 268 160 700 360 185 725 815 620 240 428 65 215 1/2 86 100

200 B1J16 60 71 268 160 740 360 185 765 990 760 255 443 78 265 1/2 143 129

250 B1J12 68 76 320 210 805 425 220 815 815 620 240 481 65 215 1/2 97 110

250 B1J16 68 78 320 210 845 425 220 855 990 760 255 496 78 265 1/2 140 153

300 B1J12 78 83 378 275 900 485 275 900 815 620 240 511 65 215 1/2 112 142

300 B1J16 78 83 378 275 940 485 275 940 990 760 255 526 78 265 1/2 156 186

300 B1J20 78 83 378 275 1025 485 275 1025 1230 940 270 545 97 395 3/4 230 260

350 B1J16 92 92 438 290 1000 555 310 1020 990 760 255 571 78 265 1/2 180 205

350 B1J20 92 92 438 290 1085 555 310 1105 1230 940 270 590 97 395 3/4 245 280

350 B1J25 92 92 438 290 1160 555 310 1180 1490 1140 310 613 121 505 3/4 435 460

400 B1J20 102 102 485 320 1165 610 340 1185 1230 940 270 640 97 395 3/4 280 335

400 B1J25 102 102 485 320 1240 610 340 1260 1490 1140 310 663 121 505 3/4 460 515

A (K1)

L_7

A (K2)

LW_ LG_ Dimensions, mm NPT LW_L-

BCHBCHFGI JVX

B1J

LG_L-

B1J

LW8MB, LW5MB + B1J

Valve DN Actuator L_8

80 B1J8 64 48 128 80 460 205 120 500 555 420 220 307 43 135 3/8 28 33

100 B1J8 64 54 158 100 505 235 135 540 555 420 220 331 43 135 3/8 30 38

100 B1J10 64 54 158 100 530 235 135 565 640 480 225 337 51 175 3/8 43 41

150 B1J10 76 59 218 145 625 290 160 640 640 480 225 387 51 175 3/8 56 61

150 B1J12 76 59 218 145 660 290 160 975 815 620 240 403 65 215 1/2 83 88

150 B1J16 76 59 218 145 700 290 160 715 990 760 255 418 78 265 1/2 128 133

200 B1J12 89 73 278 205 765 365 205 765 815 620 240 445 65 215 1/2 100 110

LW8M /

LG 8M

LW5M /

LG 5M

*) DN 400 has a reduced bore and uses the same disc as DN 350

200 B1J16 89 73 278 205 805 365 205 805 990 760 255 460 78 265 1/2 145 155

200 B1J20 89 73 278 205 890 365 205 890 1230 940 270 479 97 395 3/4 220 230

250 B1J16 114 83 335 260 935 435 260 935 990 760 255 536 78 265 1/2 165 195

250 B1J20 114 83 335 260 1020 435 260 1020 1230 940 270 555 97 395 3/4 240 270

250 B1J25 114 83 335 260 1095 435 260 1095 1490 1140 310 578 121 505 3/4 440 470

300 B1J20 114 92 395 300 1120 500 300 1120 1230 940 270 615 97 395 3/4 300 330

300 B1J25 114 92 395 300 1195 500 300 1195 1490 1140 310 638 121 505 3/4 445 510

350 B1J20 127 117 450 330 1190 565 330 1190 1230 940 270 655 97 395 3/4 285 380

350 B1J25 127 117 450 330 1265 565 330 1265 1490 1140 310 678 121 505 3/4 465 560

400* B1J20 140 133 505 370 1265 649 370 1265 1230 940 270 695 97 395 3/4 305 470

400* B1J25 140 133 505 370 1340 649 370 1340 1490 1140 310 718 121 505 3/4 485 650

A (K3)

L_5

A (API)

LW_ LG_ Dimensions, mm NPT LW_M-

BCHBCHFGI JVX

B1J

LG_M-

B1J

2 LW 70 en 25

MOUNTING POSITION D-HL (STANDARD)

VDI/VDE 3845

Syöttö G1/4"

LW6LB, LW7LB + EC

Valve DN Actuator L_6

80 EC07 46 49 128 80 560 205 120 600 81 308 154 172 307 24 117 G1/4 14 19

100 EC10 52 56 158 100 640 235 135 675 112 406 203 191 350 32 155 G1/4 24 32

LW6L /

LW7L /

125

LG6 L

150

LG7 L

200

250 EC14 68 76 320 210 985 425 220 995 196 696 348 243 530 56 259 G1/4 105 120

300 EC14 78 83 378 275 1080 485 275 1080 196 696 348 243 560 56 259 G1/4 120 150

A (K1)

EC10 56 64 190 135 700 - - - 112 406 203 191 373 32 155 G1/4 27 38

EC12 56 64 190 135 745 - - - 145 524 262 214 395 42 200 G1/4 44 55

EC10 56 70 212 150 731 300 160 745 112 406 203 191 391 32 155 G1/4 33 43

EC12 56 70 212 150 780 300 160 790 145 524 262 214 417 42 200 G1/4 50 60

EC12 60 71 268 160 820 360 185 845 145 524 262 214 447 42 200 G1/4 55 70

EC14 60 71 268 160 880 360 185 905 196 696 348 243 477 56 259 G1/4 95 110

LW8MB, LW5MB + EC

Valve DN Actuator L_8

80 EC07 64 48 128 80 560 205 120 600 81 308 154 172 307 24 117 G1/4 14 19

LW8M /

LW5M /

100 EC10 64 59 158 100 640 235 135 675 112 406 203 191 350 32 155 G1/4 24 32

LG8 M

150 EC12 76 59 218 145 780 290 160 795 145 524 262 214 422 42 200 G1/4 55 60

200

LG5 M

250 EC14 114 83 335 260 1075 435 260 1075 196 696 348 243 570 56 259 G1/4 135 165

A (K3)

EC12 89 73 278 205 885 365 205 885 145 524 262 214 464 42 200 G1/4 75 85

EC14 89 73 278 205 945 365 205 915 196 696 348 243 494 56 259 G1/4 115 125

L_7

A (K2)

L_5

A (API)

LW_ LG_ Dimensions, mm VDI/

BCHBCHEFG I JVX

LW_ LG_ Dimensions, mm VDI/

BCHBCHEFG I JVX

VDE 3845

LW_L-

LW_M-

LG_L-

LG_M-

26 2 LW 70 en

MOUNTING POSITION D-HL (STANDARD)

VDI/VDE 3845

Supply G1/4"

LW6LB, LW7LB + EJ

Valve DN Actuator L_6

80 EJ07 46 49 128 80 560 205 120 600 81 443 293 172 307 24 117 G1/4 18 23

LW6L /

, LW7L /

100 EJ10 52 56 158 100 640 235 135 675 112 606 403 191 350 32 155 G1/4 30 38

LG 6L

125

150 EJ12 56 70 212 150 780 300 160 790 145 770 522 214 417 42 200 G1/4 70 80

LG 7L

200 EJ14 60 71 268 160 880 360 185 905 196 1030 692 243 477 56 259 G1/4 132 145

250 EJ14 68 76 320 210 985 425 220 995 196 1030 692 243 530 56 259 G1/4 142 155

A (K1)

EJ10 56 64 190 135 700 - - - 112 606 403 191 373 32 155 G1/4 33 44

EJ12 56 64 190 135 745 - - - 145 770 522 214 395 42 200 G1/4 63 74

LW8MB, LW5MB + EJ

Valve DN Actuator L_8

LW8M /

LG8M

LW5M /

LG5M

80 EJ07 64 48 128 80 560 205 120 600 81 443 293 172 307 24 117 G1/4 18 23

100 EJ10 64 54 158 100 640 235 135 675 112 606 403 191 350 32 155 G1/4 30 38

150 EJ12 76 59 218 145 780 290 160 795 145 770 522 214 422 42 200 G1/4 75 80

200 EJ14 89 73 278 205 945 365 205 945 196 1030 692 243 494 56 259 G1/4 175 185

A (K3)

L_7

A (K2)

L_5

A (API)

Model EJ_ spring to close

Model EJ_A spring to open

LW_ LG_ Dimensions, mm VDI/

BCHBCHEFGI JVX

LW_ LG_ Dimensions, mm VDI/

BCHBCHEFGI JVX

VDE 3845

LW_L-

LW_M-

LG_L-

LG_M-

2 LW 70 en 27

10.1 Flange drilling and compatibility

LW6L, 7L DIN PN 10 DIN PN 16 DIN PN 25 DIN PN 40 ISO PN 20 ISO PN 50 ASME 150 ASME 300 JIS 10K JIS 16K JIS 20K JIS 30K

DN 080 OK OK OK N/A OK N/A OK N/A OK OK N/A N/A

DN 100 OK OK OK N/A OK N/A OK N/A OK OK N/A N/A

DN 125 OK OK OK N/A OK N/A OK N/A OK OK N/A N/A

DN 150 OK OK OK N/A OK N/A OK N/A OK N/A N/A N/A

DN 200 OK OK OK N/A OK N/A OK N/A OK N/A N/A N/A

DN 250 OK OK OK N/A OK N/A OK N/A OK N/A N/A N/A

DN 300 OK OK OK N/A OK N/A OK N/A DRILL N/A N/A N/A

DN 350

DN 400

LW5M,8M DIN PN 10 DIN PN 16 DIN PN 25 DIN PN 40 ISO PN 20 ISO PN 50 ASME 150 ASME 300 JIS 10K JIS 16K JIS 20K JIS 30K

DN 080 OK OK OK) OK OK OK OK OK OK OK OK OK

DN 100OKOKOKOKOKOKOKOKOKOKOKOK

DN 125OKOKOKOKOKOKOKOKOKOKOKOK

DN 150OKOKOKOKOKOKOKOKN/AOKOKOK

DN 200 N/A N/A OK OK DRILL OK DRILL OK N/A DRILL DRILL DRILL

DN 250 N/A N/A DRILL STD DRILL DRILL DRILL DRILL N/A DRILL DRILL DRILL

DN 300 N/A N/A DRILL STD DRILL DRILL DRILL DRILL N/A DRILL DRILL DRILL

DN 350 N/A N/A DRILL STD DRILL DRILL DRILL DRILL N/A DRILL DRILL DRILL

DN 400 N/A N/A DRILL STD DRILL DRILL DRILL DRILL N/A DRILL DRILL DRILL

LG6L, 7L DIN PN 10 DIN PN 16 DIN PN 25 DIN PN 40 ISO PN 20 ISO PN 50 ASME 150 ASME 300 JIS 10K JIS 16K JIS 20K JIS 30K

DN 080

DN 100

DN 150

DN 200 DRILL DRILL STD N/A DRILL N/A DRILL N/A N/A DRILL N/A N/A

DN 250 DRILL DRILL STD N/A DRILL N/A DRILL N/A DRILL DRILL N/A N/A

DN 300 DRILL DRILL STD N/A DRILL N/A DRILL N/A N/A DRILL N/A N/A

DN 350 DRILL DRILL STD N/A DRILL N/A DRILL N/A N/A DRILL N/A N/A

DN 400 DRILL DRILL STD N/A DRILL N/A DRILL N/A DRILL DRILL N/A N/A

LG5M DIN PN 10 DIN PN 16 DIN PN 25 DIN PN 40 ISO PN 20 ISO PN 50 ASME 150 ASME 300 JIS 10K JIS 16K JIS 20K JIS 30K

DN 080

DN 100

DN 150

DN 200 N/A N/A N/A N/A N/A DRILL N/A DRILL N/A N/A N/A N/A

DN 250 N/A N/A N/A N/A N/A DRILL N/A DRILL N/A N/A N/A N/A

DN 300 N/A N/A N/A STD N/A DRILL N/A DRILL N/A N/A N/A N/A

DN 350 N/A N/A N/A STD N/A DRILL N/A DRILL N/A N/A N/A N/A

DN 400 N/A N/A N/A STD N/A DRILL N/A DRILL N/A N/A N/A N/A

LG8M DIN PN 10 DIN PN 16 DIN PN 25 DIN PN 40 ISO PN 20 ISO PN 50 ASME 150 ASME 300 JIS 10K JIS 16K JIS 20K JIS 30K

DN 080

DN 100

DN 150

DN 200 N/A N/A DRILL STD N/A DRILL N/A DRILL N/A N/A N/A N/A

DN 250 N/A N/A DRILL STD N/A DRILL N/A DRILL N/A N/A N/A N/A

DN 300 N/A N/A DRILL STD N/A DRILL N/A DRILL N/A N/A N/A N/A

DN 350 N/A N/A DRILL STD N/A DRILL N/A DRILL N/A N/A N/A N/A

DN 400 N/A N/A DRILL STD N/A DRILL N/A DRILL N/A N/A N/A N/A

OK = Fits without extra machining, LW valves only. STD = Standard flange drilling acc. to body pressure rating, without the 14th mark in type code . DRILL = Extra machining needed to fit. Specified with the 14th mark in type code, see Section 11 for details. N/A = Not applicable

DRILL

(= PN 16)

DRILL

(= PN 16)

STD

(= PN 25)

DRILL

(= PN 16)

DRILL

(= PN 16)

STD

(= PN 40)

DRILL

(= PN 16)

DRILL

(= PN 16)

STD

(= PN 40)

DRILL

(= PN 16)

DRILL

(= PN 16)

DRILL STD N/A DRILL N/A DRILL N/A N/A N/A N/A N/A

DRILL STD N/A DRILL N/A DRILL N/A DRILL N/A N/A N/A

STD

(= PN 25)

DRILL STD N/A DRILL N/A DRILL N/A N/A DRILL N/A N/A

DRILL STD N/A DRILL N/A DRILL N/A DRILL N/A N/A N/A

STD

(= PN 40)

DRILL

STD

(= PN 40)

DRILL

STD N/A DRILL N/A DRILL N/A N/A DRILL N/A N/A

STD

(= PN 40)

STD

(= PN 40)

STD

(= PN 40)

STD

(= PN 40)

STD

(= PN 40)

STD

(= PN 40)

STD DRILL DRILL DRILL DRILL N/A DRILL DRILL DRILL

STD DRILL DRILL DRILL DRILL N/A N/A N/A N/A

STD DRILL DRILL DRILL DRILL N/A DRILL DRILL DRILL

STD DRILL DRILL DRILL DRILL N/A N/A N/A N/A

28 2 LW 70 en

11 TYPE CODE

NELDISC® HIGH PERFORMANCE TRIPLE ECCENTRIC DISC VALVE

Series LW and LG

1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14.

LW 6 L B A 300 P A J A T / 03 K

Flow balancing trim on down stream side of body flow port

S-

S-DISC CONSTRUCTION

2. PRODUCT SERIES / DESIGN

Wafer type, full bore, metal seated butterfly valve

Lug type, full bore, metal seated butterfly valve

3. FACE-TO-FACE LENGHT

EN 558-Part 1, Table 5 / Basic series 20, (DIN 3202-K1).

API 609 category B Class 150. EN 558-Part 1, Table 5 / Basic series 25, (DIN 3202-K2).

EN 558-Part 1, Table 5 / Basic series 16, (DIN 3202-K3).

API 609, category B. Class 300

Special

4. PRESSURE RATING

Sizes DN 80-DN 125: 50 bar (ASME 300, PN 40, ISO PN 50, JIS 30K) Sizes DN 150-DN 400: 25 bar (PN 10-25, ASME 150, ISO PN 20, JIS 10-16K)

Max shut off pressure: sizes DN 80 - DN 125 max Δp 50 bar sizes DN 150 max Δp 25 bar sizes DN 200 - DN 400 max Δp 20 bar

Body max pressure 50 bar (PN 40, ISO PN 50, ASME 300, JIS 16K, JIS 20K, JIS 30K)

sizes DN 80 - DN 400 max Δp 50 bar

5. VALVE - ACTUATOR CONNECTION

Drive shaft with two key ways / bracket Neles standard.

6. CONSTRUCTION

Standard (max. +260 °C)

- bearings AISI 316 + PTFE

- body and blind flange gaskets graphite Extended service (max. +425 °C)

- shaft bearings surfaces nitrated

- bearings cobalt based alloy

- body and blind flange gaskets graphite High temperature

- shaft bearings surfaces cobalt based alloy coated

- bearings cobalt based alloy

- body and blind flange gaskets graphite Cryogenic (min. -200 °C)

- extended bonnet and drive shaft

- otherwise as construction A Special

7. SIZE

080, 100, 125 (LW only), 150, 200, 250, 300, 350, 400

MATERIALS

8. BODY 9. DISC 10.

CF8M/1.4408

WCB/1.0619

EN 10213-4.

1.4581

CF8M/F316

EN 10213-4.

1.4581

SHAFT &

PINS

SS 329 (SIS 2324) only L_6L and L_7L

Gr. 630 (17-4PH)

XM-19 (Nitronic 50)

EN 10213-4.

1.4581

ASTM A217

gr. WC6

ASTM A352

gr. LCC

ASTM A351 gr. CG8M/

AISI 317

SEAT MATERIALS

11. STANDARD 11. NON-STANDARD

Incoloy 825, hard chrome

plated

12. DESIGN OPTIONS

Live loaded PTFE V-ring packing

Live loaded graphite packing. Fire safe construction.

Special

13. FLANGE FACING

Standard (Ra 3.2 - 6.3) Covering: EN 1092-1 Type B1 (Ra 3.2 - 12.5)

ASME B16.5 (Ra 3.2 - 6.3, Smooth finish, AARH125-250) DIN 2526 Form E (Ra 4)

Ra 10 - 12.5 Covering: EN 1092-1 Type B1 (Ra 3.2 - 12.5)

old DIN 2526 Form C (Ra 10 - 40) old DIN 2526 Form D (Ra 10)

Special

14. FLANGE DRILLING*

Without sign: L_6L, L_7L flange drilling according to PN 25

L_5M, L_8M flange drilling according to PN 40 ASME 150 (20 bar)(available with LW_L and LG_L valves)

ASME 300 (50 bar) (available with LW_M and LG_M valves)

PN 10 (available with LW_L and LG_L valves)

PN 16 (available with LW_L and LG_L valves)

PN 25 (available with LW_M and LG8M valves)

PN 40 (available with LW_M and LG_M valves)

ISO PN 20 (available with LW_L and LG_L valves)

ISO PN 50 (available with LW_M and LG_M valves)

JIS 10K (14 bar) (available with LW6L or LW7L)

JIS 16K (27 bar) (available with LW6L, LW7L or LW8M, LW5M)

JIS 20K (34 bar) (available with LW8M or LW5M)

JIS 30K (51 bar) (available with LW8M or LW5M)

Special

*) See table in 10.1 for flange drilling and compatibility

EN 10213-4.

1.4581 EN 10213.

1.4408 (or eq. 1.4401) / CF8M

CF8 M / F316 +cobalt based alloy on disc edge

ASTM A351 gr. CG8M/ AISI 317

XM-19

(Nitronic 50)

Nimonic 80A

Nimonic 80A, hard chrome plated

2.4681, UNS R31233 (ULTIMET)

Metso Automation 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, MA 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 3235 9700. Fax +55 15 3235 9748/49 Asia Pacific, 20 Kallang Avenue, Lobby B, #06-00, PICO Creative Centre, Singapore 339411, Singapore. Tel. +65 6511 1011. Fax +65 6250 0830 China, 19/F, the Exchange Beijing, No. 118, Jianguo Lu Yi, Chaoyang Dist, 100022 Beijing, China. Tel. +86-10-6566-6600. Fax +86-10-6566-2575

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

www.metso.com/valves

Metso NELDISC LG7L, NELDISC LW7L, NELDISC LW6L, NELDISC LG8M, NELDISC LW8M Installation Maintenance And Operating Instructions

Specifications and Main Features

Frequently Asked Questions

User Manual