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Metso Neles BW Series, Installation Maintenance And Operating Instructions

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Metso Neles BW Series Installation Maintenance And Operating Instructions Download Page 16

16

2 BW 70 en

Fig. 28

Disc backside

Fig. 29

Remove the cover (430)

Fig. 30

Remove the sealing ring (470)

Fig. 31

Remove the gland and the packing ring (491, 451)

Fig. 32

Remove the extension (102)

Fig. 33

Remove the sealing ring and the actuator shaft
(107, 401)

Summary of Contents for Neles BW Series

Page 1: ...Metal seated high performance disc valve Series BW Installation Maintenance and Operating Instructions 2 BW 70 en 11 2015 ...

Page 2: ...ructions 12 10 Maintenance 12 10 1 Cleaning and maintenance interval 12 10 2 Preliminary 13 10 3 Demounting 13 10 4 Reassembly 13 10 5 Replacement of the metallic seat ring 14 10 6 Replacing worn parts 15 10 7 Replacing the gland packing 17 10 8 Valve screws Clamping torque 18 11 Type code 19 READ THESE INSTRUCTIONS FIRST These instructions provide information about safe handling and operation of ...

Page 3: ...sonal injury may result CAUTION Do not dismantle the valve or remove it from the pipe line while the valve is pressurized Dismantling or removing a pressurized valve will result in uncontrolled pressure release Always isolate the relevant part of the pipeline release the pressure from the valve and remove the medium before dismantling the valve Be aware of the type of medium involved Protect peopl...

Page 4: ...ifting ropes are necessary depending on the size and weight of the valve Fasten the lifting ropes once around the valve body twice on the actuator see Figure 1 for the horizontal transport position For valve sizes with a weight of more than 1t the valve and actuator are equipped with lifting lugs to fix the lifting ropes If you fix the ropes on the actuator the shaft may be damaged Fig 1 Lifting i...

Page 5: ...on www metso com valves 2 Transport reception and storage Check the valve including equipment for any damage that may have occurred during transport Store the valve carefully before installation preferably indoors in a dry place Storage temperature 20 80 C Humidity 85 max non condensing The valve must be stored with the appropriate factory made flow port protectors The valve is usually delivered i...

Page 6: ...the valve installation direction is given install the valve to have the shaft side on the upstream side If the mounting direction is mentioned bring the valve in a position so that the arrow P pressure follows the process pressure direction see Figure 6 Fig 6 Mounting direction Close the valve for installation In the open position the disc sealing surface can accommodate the total length of the va...

Page 7: ... 8UN 530 40 34 3 1 2 8UN 560 40 36 3 1 2 8UN 570 40 38 3 1 2 8UN 610 40 40 3 1 2 8UN 620 48 42 3 1 2 8UN 640 48 44 3 3 4 8UN 670 48 46 4 8UN 710 48 48 4 8UN 720 48 Table 2 Stud bolt dimensions BW3 Class 1500 NPS thread K L length QTY 6 1 3 8 8UN 260 24 8 1 5 8 8UN 300 24 10 1 7 8 8UN 340 24 12 2 8UN 380 32 14 2 1 4 8UN 420 32 16 2 1 2 8UN 460 32 18 2 3 4 8UN 500 32 20 3 8UN 550 32 24 3 1 2 8UN 630...

Page 8: ...closed For demounting the valve proceed in the following order Close the valve When detaching the actuator to demount the valve the actuator should be tagged to the bracket and the valve body with a waterproof marker Figure 10 It makes it easy to find the correct position of the actuator at reas sembly and the actuator cannot cause a malfunction Further instructions for detaching the actuator can ...

Page 9: ...n The actuator used is normally on the customer s request For safe mounting on site you need a hoist and lifting ropes 4 3 Mounting To mount the actuator proceed in the following order Turn the valve to the closed position before mounting the actuator Carefully position the indexing shaft of the actuator on the valve shaft Bear in mind that the actuator must be mounted exactly and flush to the bra...

Page 10: ...alve is undocked from the process Ensure the valve is in a defined position normally closed Switch off the energy supply of the actuator Support the actuator with lifting ropes Unbolt the screws between the bracket and the actua tor Pull the actuator carefully vertical from the valve shaft Lift and transport the actuator carefully in order to pro tect it from damage Ensure that the energy supply o...

Page 11: ...g AISI 304 429 1 Spacer ring AISI 304 430 1 Cover ASTM A182 gr F12 cl 2 432 variable Stud ASTM A193 gr B7 433 variable Hexagon nut ASTM A194 gr 7 436 6 Sleeve AISI 316 440 variable feather key EN 10302 1 4923 444 2 Clamp disc AISI 316 447 2 Shim A2 Stainless steel 448 2 Hexagon screw ISO 3506 A2 70 451 4 Packing ring Graphite 452 1 Anti extrusion ring AISI 316 456 6 Washer AISI 316 457 72 Disc spr...

Page 12: ...closed before installation pneumatically hydraulically etc Ensure in particular that the energy supply is safely secured and cannot be damaged or torn in any way during installation If the energy supply is suddenly interrupted the valve opens abruptly This can lead to severe injury and dam age to materials 5 During possible maintenance work there is considera ble risk of injury by the accidental u...

Page 13: ...ion of the actuator Switch off the power supply of the actuator Dismount the actuator For further instructions see Section 4 5 in this IMO Support the disc valve with lifting ropes Put the lifting ropes on the body not on the shaft of the disc valve Remove the disc valve by loosening the screws or nuts opposite to each other crosswise Transport the disc valve in such a way that it cannot move or b...

Page 14: ...the valve on a solid base or workbench so that it cannot slip or tip Fig 18 Valve in CLOSED position 9 Loosen the hexagon head screws 306 see Figure 19 Fig 19 Loosen the screws 306 10 Demount the retaining ring 310 see Figure 20 Fig 20 Demount the retaining ring 301 11 Remove the rings 301 303 and the sealing 304 see Figures 21 23 Fig 21 Remove the outer seal lock ring 303 Fig 22 Remove the inner ...

Page 15: ...lation Instruction can be in Section 3 3 Installation 10 6 Replacing worn parts In order to replace worn parts proceed as follows See Figures 27 33 the corresponding part numbers being within brackets 1 Remove the actuator and the adapter 501 by loosen ing the hexagon head screws 502 503 2 Demount the metallic seat ring 321 as shown in Sec tion 12 5 3 Swivel the disc 180 to have free access to the...

Page 16: ...Disc backside Fig 29 Remove the cover 430 Fig 30 Remove the sealing ring 470 Fig 31 Remove the gland and the packing ring 491 451 Fig 32 Remove the extension 102 Fig 33 Remove the sealing ring and the actuator shaft 107 401 ...

Page 17: ...ngs onto the shaft Ensure that there are no burrs in the keyway groove which could damage the packing Position the cut ends of the graphite rings at 90 angle to each other Mount the compression ring Install the gland Put the sleeves on the studs Mount the disc springs according Figure 34 Put the spring washers on top Add the washers Place the nuts on the washer Compress the gland packing by tighte...

Page 18: ...1 2500 55 900 1500 2 4 3 2 41 6 40 8 2500 65 900 1500 M20 50 2 3 2 7 50 4 48 1 47 7 2500 70 900 1500 2 3 2 9 48 1 47 5 2500 75 900 1500 2 3 3 48 1 47 4 2500 85 900 1500 2 6 3 5 47 8 46 9 2500 95 900 1500 M30 71 3 4 4 5 69 4 66 64 9 2500 105 900 1500 3 7 4 9 65 7 64 5 2500 120 900 1500 4 2 65 2 135 900 1500 4 7 64 7 Table 6 Clamping torque for standard configuration only Thread Cover tube cover pla...

Page 19: ... C trim rating max 600 B Metallic or carbon bearings for high temperature e g GGG CrNi or stellite or high performance carbon bearings Tmax 500 C H Metallic or carbon bearings for high temperature e g GGG CrNi or stellite or high performance carbon bearings Temp 500 850 C HH H cooling ribbons e g GGG CrNi or stellite or high performance carbon bearings cooling ribbons Temp 850 1150 C S Constructio...

Page 20: ...pecial to be specified 12 sign PACKING CONSTRUCTION T3 Live loaded PTFE packing T2 Live loaded PTFE double packing with one 1 4 NPT leak off connection for shaft seal G3 Live loaded graphite packing Inherently firesafe G2 Live loaded graphite double packing with one 1 4 NPT leak off connection for shaft seal Inherently firesafe Y Special to be specified 13 sign SURFACE FINISH FOR PIPE FLANGE FACE ...

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