Metso L12 Series Installation Maintenance And Operating Instructions Download | Manualshive

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NELDISC

®

Metal seated high performance
triple eccentric disc valve

Series L12

Installation, Maintenance and
Operating Instructions

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Summary of Contents for L12 Series

Page 1: ...NELDISC Metal seated high performance triple eccentric disc valve Series L12 Installation Maintenance and Operating Instructions 2 L12 71 en 10 2017 ...

Page 2: ...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 7 4 COMMISSIONING 7 5 MAINTENANCE 7 5 1 Maintenance general 7 5 2 Removing the valve from the pipeline 7 5 3 Replacing the gland packing 7 5 4 Replacing the seat ring sizes DN 700 1400 9 5 5 Replacing the disc shafts and bearings ...

Page 3: ...wn on the valve identification plate To inter pret the type code please refer to Section 11 The valve operates both in control and shut off applica tions 1 3 Valve markings Body markings are cast on the body The valve also has an identification plate attached to it see Fig 2 Identification plate markings 1 Body material 2 Shaft material 3 Trim material 4 Seat material 5 Maximum operating temperatu...

Page 4: ...re release Always isolate the relevant part of the pipeline release the pressure from the valve and remove the medium before dismantling the valve Be aware of the type of medium involved Protect people and the environment from any harmful or poisonous sub stances Make sure that no medium can enter the pipeline during valve maintenance Failure to do this may result in damage or personal injury CAUT...

Page 5: ...e pipeline vibration and this ensures proper function ing of the positioner Do not fasten supports to the flange bolting or to the actuator It is recommended that the length of the 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 e...

Page 6: ...ud bolt mounting dimensions mounting option SB Table 3 Stud bolt dimensions mm and quantities per valve mounting option SB PN 10 PN 16 PN 25 Class 150 Through studs Body mounted studs Through studs Body mounted studs Through studs Body mounted studs Throug h studs Body mounted studs Valve type A Thread Qty L3 Qty L L1 L2 S Thread Qty L3 Qty L L1 L2 S Thread Qty L3 Qty L L1 L2 S Thread Qty L3 Qty L...

Page 7: ...performed as presented below For maintenance assistance please contact your local Metso office The part numbers in the text refer to the exploded view and to the parts list in Section 9 unless otherwise stated 5 2 Removing the valve from the pipeline It is generally most convenient to detach the actuator and its auxiliary devices see Section 6 before removing the valve from the pipeline If the val...

Page 8: ...nt the retaining plates with the text UPSIDE on top see Fig 10 Mount the disc spring sets Place the nuts on the studs Pre compress the gland packing by tightening the nuts with a tool until the disc springs have value of compression h1 h2 as in Table 5 Carry out 3 5 operation cycles with the valve Suita ble range of movement is about 80 It is not necessary to fully close or open the valve during t...

Page 9: ...loses clockwise see Fig 13 Mount the actuator into the valve Adjust the closed position limit and check the open position limit see Section 6 5 5 5 Replacing the disc shafts and bearings sizes DN 700 1400 5 5 1 Disassembling the valve The pin connection of the disc must be opened by drilling for changing the disc 3 shafts 11 12 and bearings 15 16 Remove the valve from the pipeline and the actuator...

Page 10: ...tect the disc see Fig 15 Press the shafts into the disc drillings Align the pin holes The shaft 13 position against the disc must be according to Fig 13 Support the disc well in a horizontal position during mounting of the pins Push the new pins into the holes and press them in a press to final form see Fig 17 Use a smaller tool than the pin diameter See Table 6 for force needed Install the gasket...

Page 11: ...ed firmly with a tightening screw I around the valve shaft The bushing and the tightening screw are inserted to actuator drive shaft according to Fig 20 Cylindri cal pins III are inserted in the bushing slots and these must be directed into the corresponding slots in the actuator during tightening Before the installa tion of the bushing and the tightening screw impu rities such as old threadlockin...

Page 12: ...o the uppermost position The position may be checked from the side of the tool Install the actuator on the valve and attach the valve mounting screws loosely by hand Then tighten the tightening screw I according to Table 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 reat tached Finally tig...

Page 13: ... 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 Before adjusting check that the flange ring screws are tight and that the ring and body are assembled correctly Adjust the stop screw pre...

Page 14: ...ew actuator hous ing Apply tabulated Table 11 shut off pressure Pc to the air connection at the cylinder bottom end against the spring force to close the valve Check through the stop screw hole that the piston rod does not touch the cylinder top end If it does loosen the bracket screws and turn the actuator clockwise to increase the adjusting margin Turn the closed position stop screw until it tou...

Page 15: ...an be ordered from the manufacturer 8 ORDERING SPARE PARTS When ordering spare parts always include the following information type code sales order number serial number stamped on a valve body number of the parts list part number name of the part and quantity required This information can be found from the identification plate or documents Fig 29 Hand lever Series RH Table 10 Hand lever RH adjustm...

Page 16: ...46 0 8 12 4 6 68 10 13 2 1 30 12 3 8 55 spring 4 5 65 16 1 6 23 0 9 13 3 1 45 0 5 7 2 6 38 1 3 19 3 8 55 14 250 10 350 260 11 4 9 71 5 M10 32 24 12 3 9 57 0 1 1 4 58 spring 3 4 49 0 6 9 4 8 70 7 AR11 28 21 13 2 4 35 10 AR21 20 15 16 1 9 28 0 7 10 3 2 46 0 4 6 2 7 39 1 2 17 4 58 12 4 5 65 spring 4 8 70 17 1 3 19 14 1 8 26 0 9 13 3 3 48 300 12 580 430 13 4 58 7 M12 51 38 16 3 2 46 0 3 4 3 7 54 sprin...

Page 17: ...ring 3 2 46 0 6 9 4 3 62 M25 182 134 40 1 5 22 AR41 147 108 900 36 6500 4790 32 4 7 68 spring 4 2 61 3 6 52 0 3 4 4 7 68 M25 236 174 322 0 6 9 0 6 9 3 4 49 0 2 3 2 7 39 1 1 16 3 9 57 40 2 3 33 1000 40 8500 6260 322 0 8 12 0 4 6 3 6 52 spring 2 9 42 0 8 12 4 1 59 40 3 0 43 1200 48 10500 7740 322 0 1 1 3 9 57 spring 3 2 46 40 3 7 54 50 1 9 28 1400 56 14500 10690 322 spring 4 4 64 3 7 54 40 5 1 74 50...

Page 18: ... number ID number Mgf number Item Qty Description Spare part category 1 1 Body 2 1 Clamp ring 3 1 Disc sizes DN 700 1400 3 4 1 Seat ring sizes DN 700 1400 2 9 1 Gland 10 1 Blind flange 11 1 Drive shaft sizes DN 700 1400 3 12 1 Shaft sizes DN 700 1400 3 13 1 Key 3 14 3 Pin sizes DN 700 1400 3 15 1 Bearing sizes DN 700 1400 3 16 1 Bearing sizes DN 700 1400 3 18 1 Gasket 1 19 1 Body seal sizes DN 700...

Page 19: ...M12 M8 11 L12A 125 5 2 20 1 06 7 48 4 53 10 59 9 25 3 54 0 79 4 92 0 19 0 87 1 38 M12 M8 15 4 L12A 150 6 2 20 1 10 8 50 5 12 12 01 10 63 4 33 1 26 0 79 4 92 0 19 0 87 1 38 M12 M8 24 2 L12A 200 8 2 40 1 06 10 71 6 30 13 62 11 81 4 33 1 26 0 98 5 35 0 25 1 09 1 81 M12 M10 35 2 L12A 250 10 2 68 1 26 12 87 7 87 14 80 12 99 5 12 1 26 0 98 6 14 0 25 1 09 1 81 M12 M10 59 4 L12A 300 12 3 07 1 34 14 69 10 ...

Page 20: ... L12 EC Type Dimensions mm kg F G J V Z M07 241 185 65 52 160 4 M10 241 185 65 52 200 4 M12 304 235 88 71 315 10 M14 405 305 93 86 400 18 M15 456 346 102 105 500 26 M16 530 387 124 130 500 37 M25 597 412 160 182 600 61 Type Dimensions in lb F G J V Z M07 9 49 7 28 2 56 2 05 6 30 9 M10 9 49 7 28 2 56 2 05 7 87 9 M12 11 97 9 25 3 46 2 80 12 40 22 M14 15 94 12 01 3 66 3 39 15 75 40 M15 17 95 13 62 4 ...

Page 21: ... 43 27 95 40 94 4 76 17 64 1 2 289 B1C32 15 55 35 83 52 36 6 02 20 67 3 4 564 B1C40 19 88 45 28 65 35 7 64 23 43 3 4 983 B1C50 24 02 53 15 77 56 9 53 27 17 1 1829 1 4 NPT 1 4 NPT NPT NPT V øB K J X G F STANDARD MOUNTING POSITION L12 B1C B1J Type Dimensions mm NPT kg X G F V J B1J B1JA8 135 420 560 43 279 3 8 17 B1J B1JA10 175 490 650 51 290 3 8 30 B1J B1JA12 215 620 800 65 316 1 2 57 B1J B1JA16 26...

Page 22: ...TERIAL A Body and disc stainless steel ASTM A351 gr CF8M shaft SIS 2324 DN 80 1400 H Body and disc stainless steel ASTM A351 gr CF8M shaft 17 4PH hard facing only DN 700 1400 5 SEAT MATERIAL A Stainless steel ASTM B 424 Incoloy 825 hard chrome plated only for DN 80 600 B W No 1 4418 hard chrome plated available only for DN 700 1400 6 GLAND PACKING PTFE standard without sign Available only for size...

Page 23: ...2 L12 71 en 23 ...

Page 24: ... Sorocaba São Paulo Brazil Tel 55 15 2102 9700 Fax 55 15 2102 9748 Asia Pacific 238B Thomson Road 17 01 Novena Square Tower B Singapore 307685 Tel 65 6511 1011 Fax 65 6250 0830 China 11 F China Youth Plaza No 19 North Rd of East 3rd Ring Rd Chaoyang District Beijing 100020 China Tel 86 10 6566 6600 Fax 86 10 6566 2583 Middle East Roundabout 8 Unit AB 07 P O Box 17175 Jebel Ali Freezone Dubai Unite...

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