NELDISC Metal seated high performance triple eccentric disc valve Series L6, L4 Installation, Maintenance and Operating Instructions

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1 NELDISC Metal seated hih performance triple eccentric disc valve Series L6, L4 Installation, Maintenance and Operatin Instructions 2 L6 70 en 10/2017

2 2 2 L6 70 en Table of Contents 1 GENERAL Scope of the manual Valve description Valve markins Technical specifications CE markin Recyclin and disposal Safety precautions TRANSPORTATION, RECEPTION AND STORAGE INSTALLATION General Mountin into the pipeline Actuator COMMISSIONING MAINTENANCE Maintenance eneral Removin the valve from the pipeline Replacin the land packin Valve leakae Replacin the seat rin Replacin the disc, shafts and bearins Assemblin the valve DETACHING AND INSTALLING THE ACTUATOR General Detachin the B1 series actuators Detachin the EC and EJ actuators Installin the B1 series actuator Installin EC and EJ actuators Detachin and installin other actuator types Stop screw adjustment TOOLS ORDERING SPARE PARTS EXPLODED VIEW AND PARTS LIST L6C, L6D L6F DIMENSIONS AND WEIGHTS TYPE CODE...33 READ THESE INSTRUCTIONS FIRST! These instructions provide information about safe handlin 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 for the latest documentation. SAVE THESE INSTRUCTIONS! Subject to chane without notice. All trademarks are property of their respective owners. This product meets the requirements set by the Customs Union of the Republic of Belarus, the Republic of Kazakhstan and the Russian Federation.

3 2 L6 70 en 3 1 GENERAL 1.1 Scope of the manual This manual provides essential information for users of Neldisc triple eccentric disc valves. If you need further information on actuators and other accessories, please refer to the individual manuals on their installation, operation and maintenance.. 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 oxyen service, please see also the separate installation, maintenance and operatin instructions for oxyen service (see Metso document id:10o270en.pdf) 1.2 Valve description Neldisc series L6 is a double flaned type metal seated triple 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 mountin. When the valve is closed, the elliptical disc at the major axis displaces the seat rin outward, causin the seat rin to contact the disc at the minor axis. When the valve is opened, the contact is released and the seat rin returns to its oriinal circular shape (see Fi. 1). The disc is fitted to the shafts with pins and there are no holes throuh 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. Fi. 1. L6F Neldisc seatin principle L6C, L6D, L6F/D 1.3 Valve markins Body markins are cast on the body. The valve also has an identification plate attached to it (see Fi. 2). Fi. 2. Identification plate markin: 1. Body material 2. Shaft material 3. Trim material 4. Seat material 5. Maximum operatin temperature 6. Minimum operatin temperature 7. Maximum shut-off pressure differential 8. Type desination 9. Valve manufacturin parts list no. 10. Pressure class 1.4 Technical specifications Type: L6 L4 BODY TRIM SHAFT SEAT (1) (3) (5) (6) (8) (9) ATTENTION: READ INSTRUCTIONS BEFORE INSTALLATION OR SER VICING. CONTACT METSO AUTOMATION FOR COPY. t max. t min. ps Identification plate TYPE No. RATING Made by Metso Flow Control (2) (4) (7) (10) Flaned, reduced bore, metal seated triple eccentric disc valve 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 flane drillins: L6C ASME B16.5 & B16.47 Class 150 EN PN 10 & PN 16 ISO 7005 PN 20 JIS K & 16K L6D ASME B16.5 & B16.47 Class 300 EN PN 25 & PN 40 ISO 7005 PN 50 JIS 20K & 30K L6F ASME B16.5 Class 600 EN PN 63 & PN 100 Temperature rane: -200 C to +600 C (-328 F to F) Flow direction: Free (L6C, L6D, L6F/D, L4F/D) Flow from shaft side (L6F) Dimensions: See Section 10 Weihts: See Section 10 XXXX

4 4 2 L6 70 en 1.5 CE markin The valve meets the requirements of the European Directive 97/23/EC relatin to pressure equipment, and has been marked accordin to the Directive. 1.6 Recyclin and disposal Most valve parts can be recycled if sorted accordin to material. Most parts have material markin. A material list is supplied with the valve. In addition, separate recyclin and disposal instructions are available from the manufacturer. A valve can also be returned to the manufacturer for recyclin and disposal aainst a fee. 1.7 Safety precautions CAUTION: Do not exceed the valve performance limitations! Exceedin the limitations marked on the valve may cause damae and lead to uncontrolled pressure release. Damae or personal injury may result. CAUTION: Do not dismantle the valve or remove it from the pipeline while the valve is pressurized! Dismantlin or removin 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 dismantlin 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 durin valve maintenance. Failure to do this may result in damae or personal injury. CAUTION: Beware of the discs cuttin movement! Keep hands, other parts of the body, tools and other objects out of the open flow port. Leave no forein objects inside the pipeline. When the valve is actuated, the disc functions as a cuttin device. The position of the disc can also be chaned when movin the valve. Close and detach the actuator pressure supply pipeline for valve maintenance. Failure to do this may result in damae or personal injury. CAUTION: When handlin the valve or the valve packae, bear in mind its weiht! Never lift the valve or valve packae by the actuator, positioner, limit switch or their pipin. Place the liftin ropes securely around the valve body (see Fi. 3). Damae or personal injury may result from fallin parts. CAUTION: For safety reasons use a blind flane 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 damae the seat. The valve is so constructed that the disc operates only between TRANSPORTATION, RECEPTION AND STORAGE Check the valve and the accompanyin devices for any damae that may have occurred durin 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 sprin-return actuator is delivered in a position determined by the sprin. Durin storae the valve must be lihtly closed. 3 INSTALLATION 3.1 General Remove the flow port protectors and check that the valve is undamaed and clean inside. CAUTION: When handlin the valve or the valve packae, bear in mind its weiht! Follow the liftin methods shown in Fi. 3. CAUTION: Beware of noise emissions! The valve may produce noise in the pipeline. The noise level depends on the application. It can be measured or calculated usin Metso Nelprof computer software. Observe the relevant work environment reulations on noise emission. CAUTION: Beware of a very cold or hot valve! The valve body may be very cold or very hot durin use. Protect yourself aainst cold injuries or burns. Fi. 3. Liftin of the valve

5 2 L6 70 en Mountin into the pipeline Flush or blow the pipeline carefully before installin the valve. Forein particles, such as sand or pieces of weldin electrode, will damae the disc sealin surface and seat. The valve may be installed in any position and offers tihtness in both directions (L6C/D, L6F/D). L6F offers tihtness in one direction. Install the valve in the pipeline so that the shaft is horizontal if possible. However, we do not recommend installin the valve with the actuator on the underside because dirt in the pipeline may then enter the body cavity and damae the land packin. If the valve is equipped with a flow balancin 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 Fi. 4). Not recommended mountin position codin for valveactuator unit if usin S-disc: A-HL, B-HL, C-HL and D-HL. Select flane askets accordin to the operatin conditions. Do not attempt to correct pipeline misalinment by means of flane boltin. The recommended position of the perforated plate is at the "top" of the pipeline, on the downstream side and to flow direction B. Fi. 5. Fi. 6. Mountin after a pipe elbow Mountin after the centrifual pump Use caution when installin valve with Sprin-to-open actuator. Valve must be in closed position durin installation if the disc exceeds the Face-to-face lenth. Enery supply for the actuator must be safely fastened and it cannot suffer damae or break off durin the installation. Fi. 4. Position of the flow balancin trim Flow direction B 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 functionin of the positioner. Do not fasten supports to the flane boltin or to the actuator. It is recommended that the lenth of any straiht pipe precedin the control valve is at least 2 x pipe diameter. The flow causes a so-called dynamic torque aainst the valve disc which attempts to close the valve. In a pipe elbow the pressure on the outer ede is hiher than on the inner ede. When installin the triple eccentric disc valve immediately after a pipe elbow, the valve shaft must be directed toward the centre point of the pipe (see Fi. 5). This is especially important when the valve is used as a control valve. The valve shaft of a valve mounted after the centrifual pump must be perpendicular to the pump shaft (see Fi. 6). When thus installed, the valve discs will be more evenly loaded and vibrations otherwise possible in the intermediate positions will be eliminated. When mountin the valve it must be in a closed position and be carefully centred between the pipe flanes so that the turnin disc does not touch the pipe ede or flane askets, see Fi.7 and Table 1. In case of sudden shutdown of the enery supply the valve will open unexpectedly due to pre-stressed sprin packae. This may cause sinificant harm to people and material around the valve. In valves with certain nominal sizes some flane bolts do not pass the valve body. The valve body is thus equipped with holes, see Fi. 8 and Tables Ensure that the disc can turn to the open position after preliminary tihtenin of the flane bolts. The actuators of control valves can be equipped with position stops which usually only allow the disc to open 80. Lenht of stud bolts in Tables are based on: asket thickness of 3 mm heavy nuts flane thickness of weldneck flanes per ASME Fi. 7. Minimum pipe inside dimensions

6 6 2 L6 70 en Fi. 8. Table 1. Stud bolt lenht 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 Table 2. Stud bolt dimensions (mm), L6C ASME Class 150 flanes. Both flanes included. Size Thread L L1 NPS K Lenth Qty Lenth Qty 04 5/8-UNC /4-UNC /4-UNC /4-UNC /8-UNC /8-UNC UNC UNC /8-8UN /8-8UN /4-8UN * 1 1/4-8UN * 1 1/4-8UN * 1 1/2-8UN * 1 1/2-8UN * 1 1/2-8UN * 1 1/2-8UN * 1 1/2-8UN * 1 1/2-8UN * 1 3/4-8UN * 1 3/4-8UN *) flanes acc. to ASME B16.47 series A Table 3. Stud bolt dimensions (mm), L6D ASME Class 300 flanes. Both flanes included. Size Thread L L1 NPS K Lenth Qty Lenth Qty 04 3/4-UNC /4-UNC /4-UNC /8-UNC UNC /8-8UN /8-8UN /4-8UN /4-8UN /4-8UN /2-8UN * 1 5/8-8UN * 1 5/8-8UN * 1 3/4-8UN * 1 7/8-8UN * 2-8UN * 1 5/8-8UN * 1 3/4-8UN * 1 7/8-8UN * 2 1/4-8UN *) flanes acc. to ASME B16.47 series A Table 4. Stud bolt dimensions (mm), L6F/D ASME Class 600 flanes. Both flanes included. Size Thread L L1 NPS K Lenth Qty Lenth Qty 04 7/8-UNC UNC /8-8UN /4-8UN /4-8UN /8-8UN /2-8UN /8-8UN /8-8UN /8-8UN * 2-8UN * 2-8UN * 2 1/2-8UN *) flanes acc. to ASME B16.47 series A

7 2 L6 70 en 7 Table 5. Stud bolt dimensions (mm), L4F/D ASME Class 600 flanes Size Thread øh L L1 NPS K mm Lenth Qty Lenth Qty L2 04 7/8-UNC 25, UN 28, /8-8UN 31, /4-8UN /4-8UN /8-8UN /2-8UN /8-8UN /8-8UN * 2-8UN * 2 1/4-8UN * 2 1/2-8UN *) flanes acc. to ASME B16.47 series A Table 6. Stud bolt dimensions (mm), L6F ASME Class 600 flanes. Both flanes included Size Thread L L1 NPS K Lenth Qty Lenth Qty 06 1 UNC /8-8UN /4-8UN /4-8UN /8-8UN /2-8UN /8-8UN /8-8UN UN * 2-8UN * 2 1/2-8UN *) flanes acc. to ASME B16.47 series A Valve insulation If necessary, the valve may be insulated. Insulation must not continue above the upper level of the valve body, see Fiure 9. Fi. 9 Insulation limit Insulation of the valve 3.3 Actuator When installin the actuator on the valve, make sure that the valve packae functions properly. See instructions for installin in Section 6. Observe the space needed for removal of the actuator. The upriht position is recommended for the actuator cylinder. The actuator must not touch the pipeline, because pipeline vibration may damae it or interfere with its operation. In some cases, e.. when a lare-size actuator is used or when the pipeline vibrates heavily, supportin the actuator is recommended. Please contact Metso s Automation business for further information. 4 COMMISSIONING Ensure that no dirt or forein objects are left inside the valve or pipeline. Flush the pipeline carefully. Keep the valve open durin flushin. When startin 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 hih-capacity pumps, creates a torque peak in the disc. This can damae the pin connection between disc and shaft when the valve is open. The packin construction is live loaded. If the leakae occurs, re-tihten the land nuts but don't exceed the values in the Tables 7, 8 and 9 by 50 % or do not fully compress the disc sprins. 5 MAINTENANCE CAUTION: Observe the safety precautions mentioned in Section 1.7 before maintenance! CAUTION: When handlin the valve or the valve packae as a whole, bear in mind the weiht of the valve or the entire packae. CAUTION: For safety reasons the retainin plates MUST always be installed accordin to Section Maintenance eneral Althouh Metso s Neles valves are desined to work under severe conditions, proper preventative maintenance can sinificantly help to prevent unplanned downtime and in real terms reduce the total cost of ownership. Metso recommends inspectin 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 toether with your local Metso experts. Durin this periodic inspection the parts detailed in the Spare Part Set should be replaced. Time in storae should be included in the inspection interval. 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. NOTE: When sendin oods 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 oriinal spare parts to make sure that the valve functions as intended.

8 8 2 L6 70 en NOTE: For safety reasons, replace pressure retainin boltin if the threads are damaed, have been heated, stretched or corroded. 5.2 Removin the valve from the pipeline CAUTION: Do not dismantle the valve or remove it from the pipeline while the valve is pressurized! It is enerally most convenient to detach the actuator and its auxiliary devices (see Section 6), before removin the valve from the pipeline. If the valve packae is small or difficult to access, it may be more practical to remove the entire packae 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 servicin is to take place. The valve must be in a closed position when removin. Support the valve carefully with a hoist. Place ropes carefully and unscrew the pipe flane bolts. Ensure that the ropes are positioned correctly. Lift valve correctly (see Fi. 3). 5.3 Replacin the land packin CAUTION: Do not dismantle the valve or remove it from the pipeline while the valve is pressurized! PTFE V-rins are used as a standard land packin and raphite rins for hih temperature constructions. The packin construction is live loaded as standard. The land packin (20) must be chaned if leakae occurs even after the hex nuts (25) have been tihtened as recommended L6C, L6D, L6F/D and L4F/D Make sure the valve is not pressurized. Unfasten the nuts (25) and remove the disc sprin (TA-Luft) kits (43), the retainin plates (42) and the land (9). Remove old packin rins (20). Do not damae the surfaces of the packin rin counterbore and shaft. It is not necessary to chane anti-extrusion rin (22). Clean the land and packin rin counterbore. Install new set of packins (V-rin or raphite). Slip the rins onto the shaft. Ensure that there are no burrs in the keyway roove which could damae the packin. Install the land. Mount the retainin plates with the text UPSIDE on top (see Fi. 10). Mount the disc sprin kits. Place the nuts on the studs. Pre-compress the land packin by tihtenin the nuts with a tool until the disc sprins have value of compression (h 1 h 2 ) as in Tables 7 and 8. Carry out 3 5 operation cycles with the valve. Suitable rane of movement is about 80 %. It is not necessary to fully close or open the valve durin the operation. Unfasten the nuts and disc sprins. Fi. 10. Table 7. L6C Mountin the retainin plates Measure the heiht h 1 of the disc sprins and use these values as a basis when definin the final heiht of the sprins (as compressed condition). Re-install the disc sprins and tihten the nuts with the tool. Tihten the nuts until the set value of compression (h 1 h 2 ) of disc sprins is achieved, see Tables 7 and 8. Tihtenin of land packin, L6C and L6D L6D Sprin set dia Thread Compression (h 1 h 2 ), mm Packin rin material DN / NPS DN / NPS mm M, UNC Graphite + PTFE PTFE 100 / / 4 20 M8, 5/ / 6, 200 / / 6 20 M8, 5/ / / 8 25 M10, 3/ / M10, 3/ / / M10, 3/ / M10, 3/ / / M14, 1/ / / M14, 1/ / / M14, 1/ / 28, 750 / / 18, 500 / M18, 5/ / / M18, 5/ / 36, 950 / / 28, 750 / M20, 3/ / M20, 3/ / M20, 3/ / M24, / M22, 7/ / M30, 1 1/ Table / 40, 1200 / M24, 1 (4 s.) / M36, 1 1/ Tihtenin of land packin, L6F/D and L4F/D L6F/D Compression (h 1 h 2 ) mm Sprin set dia Thread L4F/D Packin rin material DN / NPS mm M, UNC Graphite + PTFE PTFE 100 / 4 25 M10, 3/ / 6 25 M10, 3/ / M14, 1/ / M18, 5/ / M20, 3/ / M20, 3/ / M20, 3/ / M22, 7/ / M24, / M24, / M30, 1 1/ / M30, 1 1/ / M24, 1 (4 s.)

9 2 L6 70 en 9 Table 9. Tihtenin of land packin, L6F Fi. 11. dia h 2 disc sprin set (43) packin (20) V-rin set or raphite packin anti-extrusion rin (22) h 1 stud (24) hexaon nut (25) retainer plate (42) land (9) Gland packin; L6C, L6D, L6F/D and L4F/D L6F Sprin set dia Compression (h 1 -h 2 ) mm Thread Packin rin material DN mm Graphite PTFE No of studs M M M M M M M M , M M M If the leakae still occurs when the valve is pressurized, re-tihten the nuts but don't exceed the values in the Tables 7 and 8 by 50 % or do not fully compress the disc sprins L6F Make sure the valve is not pressurized. Unfasten the nuts (25) and remove the disc sprin (TA-Luft) kits (43), the land (9a), the retainer rin (42) and the compression rin (9b). Remove old packin rins (20). Do not damae the surfaces of the packin rin counterbore and shaft. Clean the land and packin rin counterbore. Install new set of packins (V-rin or raphite). Slip the rins onto the shaft. Ensure that there are no burrs in the keyway roove which could damae the packin. Position the cut ends of the raphite rins at a 90 anle to each other. Mount the compression rin. Slip the retainer rin on the shaft and push it aainst the compression rin, see Fi. 12. Install the land. Mount the disc sprin kits. Place the nuts on the studs. Pre-compress the land packin by tihtenin the nuts with a tool until the disc sprins have value of compression (h 1 h 2 ) as in Table 9. Carry out 3 5 operation cycles with the valve. Suitable rane of movement is about 80 %. It is not necessary to fully close or open the valve durin the operation. Unfasten the nuts and disc sprins. Measure the heiht h 1 of the disc sprins and use these values as a basis when definin the final heiht of the sprins (as compressed condition). Re-install the disc sprins and tihten the nuts with the tool. Tihten the nuts until the set value of compression (h 1 h 2 ) of disc sprins is achieved, see Table 9. If the leakae still occurs when the valve is pressurized, re-tihten the nuts but don't exceed the value in the Table 9 by 50 % or do not fully compress the disc sprins. Fi. 12. Fi Valve leakae Valve leakae is not always caused by a damaed seat rin or disc. The reason can also be that the disc is not in the closed position. Mountin the retainer rin dia h 2 disc sprin set (43) compression rin (9b) packin (20) V-rin set or raphite packin h 1 Gland packin, L6F stud (24) hexaon nut (25) retainer rin (42) land (9a) Check the position of the actuator relative to the valve. The screws may be loose or the bracket damaed. Check the adjustment in the closed position (see Section 6.4). The markin line parallel to the disc on the valve shaft head shows rouhly the closed position of the disc (see Fi. 14). Pressure shocks can cause loosenin of the pin connection between disc and shaft; consequently the shaft moves while the disc remains in place and this prevents full closin of the disc.

10 10 2 L6 70 en If the reason for the leakae does not become apparent after doin the above, the valve must be disassembled for replacin the parts. Fi Replacin the seat rin open closed Open and closed positions of the valve CAUTION: Do not dismantle the valve or remove it from the pipeline while the valve is pressurized! Ensure that the valve is not pressurized. Remove the valve from the pipeline. The valve must be in a closed position durin removal. Follow the liftin methods shown in Section L6C, L6D, L6F/D and L4F/D Remove the clamp rin (2) by untihtenin the screws (27). Remove the old body seal (19) and the seat rin (4). Chane the seat rin if it is damaed. Clean all the surfaces of the seats and check the surface of the seat rin. Check also the condition of the disc. A damaed disc must be chaned (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 rease. Handle the ends of the seal accordin to Fi. 15. Centre the seat rin (4) carefully into its roove and turn the disc to maintain liht contact with the seat. Mount the clamp rin and tihten the screws (27) lihtly. Turn the disc slihtly open and pull it back to set the seat into the proper position. Tihten 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 tihtened flane may damae the seat rin. The screw heads must be below the flane surface in lu type valves. Table 10. Clamp rin/blind flane screw torque, Nm ±10 % Thread Clamp rin Blind flane mm / (UNC) M6, 1/ M8, 5/ M10, 3/ M12, 1/ M16, 5/ M20, 3/ M22, 7/ M24, M32, 1 1/ M38, 1 1/ Check the position between the seat rin and the disc. The valve closes clockwise (see Fi. 14). Mount the actuator into the valve. Adjust the closed position limit and check the open position limit (see Section 6) L6F Remove the clamp rin (2) and the old seat rin (4). Clean up raphite from the body roove. Polish the contact surface of the new body seal with emery paper (rade 240). Also polish the ede of the disc. Spray a thin layer of dry lubricatin fluid, e.. Molykote 421R, to the ede of the disc. Mount a new raphite body seal (19) to the body and then the seat rin (4). Mount the clamp rin (2). Tihten the screws (27) lihtly, so that the seat rin (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 position, e.. usin a liftin crane, to prevent the disc movin in the open direction. See Fi. 16. Tihten 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 rin. Fi. 15. Mountin the body seal Spray a thin layer of dry lubricatin fluid, e.. Molykote 321R or equivalent, into the seat roove, surfaces of the clamp rin, seat rin and screws.

11 2 L6 70 en 11 Fi Replacin the disc, shafts and bearins Disassemblin the valve The pin connection of the disc must be opened by drillin for chanin the disc (3), shafts (11, 12) and bearins (15, 16). Remove the valve from the pipeline and the actuator from the valve. Remove the clamp rin (2) and seat rin (4) accordin to section 5.5. Set the valve horizontally on a sturdy surface so that the flat side of the disc lays aainst the surface (see Fi. 17). Fi. 17. Drill the holes carefully to the centre of the pins (14). Choose a drill mm smaller than the diameter of the pin. Drill the holes deep, but not enouh to reach the disc. Replacin the seat, L6F Drillin the pins Pull the pins out. Dismantle the land packin includin anti-extrution rin (22), when applicable, accordin to Section 5.3. Detach the screws (26) and the blind flane (10) and remove the asket (18). Place rubber strips or other protection between the disc ede and the body and remove the shafts (see Fi. 18). Remove the bearins (15, 16). Clean and check all parts carefully. Fi Assemblin the valve Replace damaed parts with new ones. Set the disc and the shaft toether beforehand. In case the pin holes have been damaed durin removal of the old pins the holes can be drilled to a larer pin size. File off any burrs from the shafts. The bearins for the valves (N, U and H constructions) are cobalt alloy bushins which are mounted into the body toether with the shafts. Protectin the disc durin disassembly and assembly Mount the bearin into the shaft. Spray a thin layer of dry lubricatin fluid, e.. Molykote 321R or equivalent, into the inside surface of the bushin and the shaft bearin roove. Press the bushin with a tihtenin rin into the shaft bearin roove and fit the shaft with the bearins carefully into the body throuh the tihtenin rin. Place the disc horizontally on a surface so that the flat side of the disc lays aainst the surface. Lift the body around the disc so that the shaft bores are alined with the bores in the disc. Protect the disc (see Fi. 19). Press the shafts into the disc drillins. Alin the pin holes. The shaft (11) position aainst the disc must be accordin to Fi. 14. NOTE: Use only pins supplied by the manufacturer! NOTE: The pins must be pressed with enouh force to deform them so that the connection will be free from backlash. Support the disc well in a horizontal position durin mountin of the pins. Push the new pins into the holes and press them in a press to final form (see Fi. 19). Use a smaller tool than the pin diameter. See Table 11 for forces. Fi. 19. Pressin the pins

12 12 2 L6 70 en Table 11. Pressin the pins, forces kn Pin diameter, mm Install the asket (18) and the blind flane (10). Tihten the screws (26) lihtly. Then tihten 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 rin. See details in Section 5.5. Install the body seal (19) and the clamp rin (2). See details in Section 5.5. Install the land packin (see Section 5.3). Check the contact line between the seat rin and the disc (see Fi. 14). 6 DETACHING AND INSTALLING THE ACTUATOR 6.1 General Force, kn Pin diameter, mm Force, kn CAUTION: When handlin the valve or the valve packae, bear in mind its weiht! CAUTION: The actuator must not be removed from the valve in a pipeline under pressure as result of dynamic torque! Fi Detachin the EC and EJ actuators Actuator removal, B1 series Disconnect the actuator from its power source; detach the air supply pipe and control sinal cables or pipes from their connectors. First detach the positioner, or any other accessory, from the actuator, and detach the couplin plate from the drive shaft. Next, the bushin is loosened by turnin the tihtenin screw counter-clockwise. The tihtenin screw also acts as an extractor. It is hihly recommended to use a suitable bushin from the tool set H between the tihtenin screw (I) and drive shaft. The bushin dimensions are iven in Table 12. 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 sprin-return actuator unless a stopscrew is carryin the sprin force! NOTE: Do not turn the disc more than 90 as this could damae the seat. The valve is so constructed that the disc operates only between NOTE: Before dismantlin, carefully observe the position of the valve with respect to the actuator and positioner/limit switch so as to ensure that the packae can be properly reassembled. The actuator is factory-mounted on the valve and the stroke limit stop screws are adjusted in advance. 6.2 Detachin the B1 series actuators Disconnect the actuator from its power source; detach the air supply pipe and control sinal cables or pipes from their connectors. Unscrew the bracket screws. Detach the actuator usin a suitable extractor. The correct tool can be ordered from the manufacturer (see Fi. 20). Remove the bracket and couplin, if any. Fi. 21. Table Installin the B1 series actuator Detachin the EC/EJ actuator Bushin dimensions Actuator Outer dim. (mm) Inner dim. (mm) Heiht (mm) EC/EJ EC/EJ EC/EJ EC/EJ12 Turn the valve to the closed position before mountin the actuator. Clean the shaft and the shaft bore and file off any burrs which could interfere with mountin. Protect the joint surfaces from corrosion, e.. with Cortec VCI 369 or an equivalent anti-corrosive aent..

13 2 L6 70 en 13 If a bushin 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-actin cylinder actuator, B1C, and sprinreturn cylinder actuator, B1J (sprin-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 sprin-return cylinder actuator B1JA (sprinto-open), choose the keyway which establishes the piston in its lower position when the valve is open. Check visually that the actuator is correctly positioned relative to the valve. Tihten all the fastenin screws as tihtly as possible. Adjust the stop screws to the closed position (see Section 6.7). The openin anle in a control valve can be limited by a stop screw to 80. The openin anle of a shutoff valve is 90. When a shaft extension is required, the sizin of the shaft extension must be discussed with the valve manufacturer. Fi. 22. Loctite 225 or similar Cone bushin installation Key Installation tool H Installin EC and EJ actuators The actuator is attached to a bracket via an ISO 5211 standard mountin interface. The actuator is adapted to the valve shaft with a separate bushin. The bushin (II + II) is a two-piece cone-shaped bushin, which is tihtened firmly with a tihtenin screw (I) around the valve shaft. The bushin and the tihtenin screw are inserted to actuator drive shaft accordin to Fi. 22. Cylindrical pins (III) are inserted in the bushin slots, and these must be directed into the correspondin slots in the actuator durin tihtenin. Before the installation of the bushin and the tihtenin screw, impurities such as old threadlockin material have to be removed from the threads of the tihtenin screw, and Loctite 225 or similar. Threadlock have to be carefully applied to the threads, as shown in Fi. 22. The tihtenin screw can be turned from inside the actuator shaft usin a suitable hex key, Fi. 23. Prior to installation, the correct keyway position of the valve has to be checked. The bushin 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 bushin halves, and the ANSI keyway is located in the middle of the half bushin. Fi. 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 usin compressed air, see Fi. 25, or by checkin the position of the pointer at the end of the drive shaft. The actuator is closed if the direction of the slot in the couplin plate is transverse to the direction of the actuator's main line. Fi. 23 Fi. 24. Tihtenin of the cone bushin DIN keyways at bushin split ACTUATOR IN CLOSED POSITION Stop screw for closed position Openin pressure Keyway positions on the actuator ANSI keyways in the middle of bushin Closin pressure Stop screw for open position Fi. 25. Actuator connections

14 14 2 L6 70 en Table 13. Mount the actuator to the valve bracket with four screws. The tihtenin screw of the bushin should be loosened before mountin, 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 movement due to e.. thermal expansion. Check, before the screw is tihtened, that the drive shaft is in the upper position of its axial movement, which is its normal position (the mountin position shown in Fi. 23). Checkin is important, as the actuator shaft drops down slihtly when the screw is tihtened. 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 Fi. 23). The drive shaft will automatically find its correct position if the installation tool H (see Fi. 23) is used. The installation tool is attached instead of the couplin plate usin M4 screws with the drive shaft in lower position (before the valve is installed). Tihten 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 mountin screws loosely by hand. Then tihten the tihtenin screw (I) accordin to Table 13. The required torque is also marked on a plate close to the drive shaft on the actuator housin. The installation tool is removed, and the couplin plate is reattached. Finally, tihten the valve mountin screws. Check the axial position of the drive shaft. The shaft position may not be at the upper or lower position X iven in Table 13, or close to those values. Remount the actuator if the position is not correct. The valve may malfunction if the tihtenin 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 adjustin the close and open positions of the valve are marked on the actuator housin (see Fi. 25). See Section 6.7. Mountin faces, tihtenin screws and drive shaft clearances 6.6 Detachin and installin other actuator types See actuator s manual for details. 6.7 Stop screw adjustment General Close the metal seated triple eccentric disc valve by turnin the disc with a torque aainst the seat. Choose the torque from Tables 14, 15, 16 and 17 for adjustin the stop screw to the closed position of the actuator. Try not to exceed the iven values since excessive torque would strain the seat and the joint between the disc and the shaft. Always readjust the stop screw after chanin the seat and after mountin the actuator Actuators other than tabulated Close the valve as per the tabulated torque Mc and adjust the stops accordinly. 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 Chanin the mountin 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 mountin it into another key roove. 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 damae the seat. Size Mountin Thread Key Nm ~X upper pos. (mm) ~X lower pos. (mm) EC/EJ05 F05 M EC/EJ07 F07 M EC/EJ10 F10 M EC/EJ12 F12 M EC/EJ14 F14 M Fi. 26. Chanin the mountin position

15 2 L6 70 en Double-actin cylinder actuator B1C Fi. 27. Apply the tabulated shut-off pressure Pc to the air connection at the cylinder base. With the stop screw removed, check throuh 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 adjustin marin. Turn the closed position stop screw until it touches the piston, then turn back 1/4 turn and lock up. An O-rin is used for leakproofin the stop screw. An extra lon screw is needed for openin anles <80. Stop screw for the closed position Cylinder actuator, series B1C Stop screw for the open position Double-actin diaphram actuator EC Follow instructions iven in Section See also Fi Sprin-return cylinder actuator B1J "Sprin-to-close" Before mountin the cylinder, screw in the closed position stop screw completely. The tables indicates *) sprin when the sprin-created torque does not exceed the maximum permitted closin torque Mc. Otherwise, apply the tabulated pressure Pc into the air connection at the cylinder end aainst the sprin 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-rin is used for leakproofin the stop screw. After adjustin, check the adjustin marin throuh the air connection hole. The piston must not touch the cylinder end. If necessary, increase the marin by loosenin the bracket screws and turnin the actuator clockwise. An extra lon screw is needed for openin anles <80. Fi Sprin-return cylinder actuator B1JA "Sprin-to-open" The actuator bein unpressurized the valve is open. Unscrew the close limit stop screw (actuator housin). Apply tabulated shut-off pressure Pc to the air connection at the cylinder bottom end aainst the sprin force to close the valve. Check throuh 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 adjustin marin. Turn the closed position stop screw until it touches the piston, then turn back 1/4 turn and lock up. An O-rin is used for leakproofin the stop screw. An extra lon screw is needed for openin anles <80. Fi. 29. Cylinder actuator, series B1J Stop screw for the closed position Cylinder actuator, series B1JA Stop screw for the closed position Stop screw for the open position Stop screw for the open position Sprin-return diaphram actuator EJ "Sprin-to-close" Follow instructions iven in Section See also Fi. 25. "Sprin-to-open" Follow instructions iven in Section See also Fi. 25.

16 16 2 L6 70 en M-series operator Close the valve as per the tabulated primary torque M1 (handwheel torque) iven in Tables 14, 15, 16 and 17. Tihten the closed position stop screw until it touches the linkae, then turn back 1/4 turn and lock up with with Loctite 225 or similar. Stop screw for the open position Stop screw for the closed position 7 TOOLS No special tools are needed for servicin the valve. However, we recommend an extractor tool (ID-code table in actuator's IMO) for removin the actuator from the valve. The tool can be ordered from the manufacturer. 8 ORDERING SPARE PARTS When orderin spare parts, always include the followin 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. Fi. 30. Actuator, series M Electric operator Instructions for adjustment are iven in a separate leaflet, code D304568, which is available from the manufacturer. Fi. 31. Electric operator

17 2 L6 70 en 17 Table 14. Series L6C, closin torques L6C DN SIZE 100 4" 125 5" 150 6" 200 8" " " " " " " " Mc BC and BJ BC BJ BJA** BJK BJKA** BJV BJVA** EC and EJ EC EJ EJA Q-P actuator Sprin close Sprin open 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 QP2C M QP3C QP2C M QP3C QP3C M QP4C QP3C M QP4C QP4C M QP5C M QP5C M M M M M M M M M M M Manual operator Input torque M1 *) Sprin = sprin torque not adequete to reach tihtness accordin to ISO 5208 Rate D, BS 6755 Part 1 Rate D, ANSI/FCI 70.2 Class V, IEC or MSS-SP72/1970 **) Adjust the supply pressure reulator to the pressure below. Do not exceed iven value.

18 18 2 L6 70 en Table 14. Continued L6C DN SIZE " " " " " " " " " " " " Mc BC and BJ BC BJ BJA** BJK BJKA** BJV BJVA** EC and EJ EC EJ EJA Q-P actuator Sprin close Sprin open 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 Manual operator Input torque M M M *) Sprin = sprin torque not adequete to reach tihtness accordin to ISO 5208 Rate D, BS 6755 Part 1 Rate D, ANSI/FCI 70.2 Class V, IEC or MSS-SP72/1970 **) Adjust the supply pressure reulator to the pressure below. Do not exceed iven value.

19 2 L6 70 en 19 Table 15. Series L6D, closin torques L6D DN SIZE 100 4" 125 5" 150 6" 200 8" " " " " " " Mc BC and BJ BC BJ BJA** BJK BJKA** BJV BJVA** EC and EJ EC EJ EJA Q-P actuator Sprin close Sprin open 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 QP2C QP3C M QP2C QP3C M QP3C M QP4C Manual operator Input torque M QP4C M QPC M QPC M M M M M M M M M M M *) sprin = sprin torque not adequete to reach tihtness accordin to ISO 5208 Rate D, BS 6755 Part 1 Rate D, ANSI/FCI 70.2 Class V, IEC or MSS-SP72/1970 **) Adjust the supply pressure reulator to the pressure below. Do not exceed iven value.

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