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Summary of Contents for Metso Neldisc L1 Series
- Page 1 NELDISC® Metal seated high performance triple eccentric disc valve Series L1 and L2 Installation, Maintenance and Operating Instructions...
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Page 2: Table Of Contents
These instructions provide information about safe handling and operation of the valve. If you require additional assistance, please contact the manufacturer or manufacturer’s representative. Addresses and phone numbers are printed on the back cover. See also www.metso.com/valves for the latest documentation. SAVE THESE INSTRUCTIONS! Subject to change without notice. -
Page 3: General
Identification plate marking: If you are uncertain about use of the valve or its suitability Body material for your intended purpose, please contact Metso for more Shaft material information. Trim material For valves in oxygen service, please see also the separate... -
Page 4: Safety Precautions
Fig. 3. Lifting of the valve level depends on the application. It can be measured or calculated using Metso Nelprof computer program. Mounting into the pipeline Observe the relevant work environment regulations on Flush or blow the pipeline carefully before installing the noise emission. - Page 5 2 L1 71 en In case of sudden shutdown of the energy supply the valve will open unexpectedly due to pre-stressed spring package. The recommended position of the This may cause significant harm to people and material perforated plate is at around the valve.
- Page 6 2 L1 71 en Table 2. Mounting options Valve ASME ASME Valve ASME PN 10 PN 16 PN 25 PN 40 PN 25 PN 40 type type L1C18 UH — — L1D16 L1C20 — L1D18 L1C24 — L1D20 L1C28 SB L1D24 L1C30 —...
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Page 7: Actuator
Although Metso’s Neles valves are designed to work under severe conditions, proper preventative maintenance can significantly help to prevent unplanned downtime and in real terms reduce the total cost of ownership. Metso recom- Insulation limit mends inspecting the valves at least every five (5) years. -
Page 8: Replacing The Gland Packing
2 L1 71 en Replacing the gland packing Table 5. Tightening of gland packing Compression (h –h ) mm CAUTION: L1C, L2C L1D, L2D Spring set dia Thread Packing ring material Do not dismantle the valve or remove it from the pipe- Graphite + DN / NPS DN / NPS... -
Page 9: Replacing The Seat Ring
2 L1 71 en Check the position between the seat ring and the disc. The valve closes clockwise (see Fig. 13). Mount the actuator into the valve. Adjust the closed position limit and check the open position limit (see Section 6.4). -
Page 10: Assembling The Valve
2 L1 71 en Assembling the valve NOTE: Use only pins supplied by the manufacturer! Replace damaged parts with new ones. Set the disc and the shaft together beforehand. In NOTE: case the pin holes have been damaged during The pins must be pressed with enough force to deform removal of the old pins the holes can be drilled to a them so that the connection will be free from backlash. -
Page 11: Detaching And Mounting The Actuator
Close the valve as per the tabulated torque Mc and adjust Fig. 20. Removing the actuator with an extractor the stops accordingly. Note the increased torque created by the actuator while the valve is closed. NOTE: Metso accepts no responsibility for compatibility of actua- tors not installed by Metso. - Page 12 2 L1 71 en 6.4.3 Changing the mounting position 6.4.5 Manual operator M Close the valve as per the tabulated primary torque CAUTION: M1 (handwheel torque) given in Tables 8 and 9. The actuator must not be removed from the valve in a ...
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Page 13: Tools
2 L1 71 en An extra long screw is needed for opening angles TOOLS <80°. 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 Stop screw for the manufacturer. - Page 14 2 L1 71 en Table 7. Series L1C, L2C closing torques BC and BJ BJKA BJVA Spring to close Spring to open Manual Input SIZE SIZE actuator operator torque M1 (Nm) (lbf ft) (bar) (psi) (bar) (psi) (bar) (psi) (bar) (psi) (bar) (psi) (bar) (psi) (bar) (psi) (bar) (psi) (bar)
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Page 15: Exploded View And Parts List
2 L1 71 en EXPLODED VIEW AND PARTS LIST Identification number Charge number Mfg-number Item Description Spare part category Body Clamp ring Disc Seat ring Gland Blind flange Drive shaft Shaft Bearing Bearing Gasket Body seal 1 set Gland packing Stud Hexagon nut Hexagon screw... -
Page 16: Dimensions And Weights
2 L1 71 en DIMENSIONS AND WEIGHTS Ø O L1C/ASME 150 Size Dimensions, mm Dimensions, mm Weight 12.7 55.5 12.7 60.6 19.05 78.2 22.23 94.7 22.23 94.7 1006 1 1/4 22.23 104.8 1010 1060 1 1/4 25.4 116.2 1000 1120 1090 1 1/4 31.75... - Page 17 2 L1 71 en L1C + M øZ øB* L1C + M Type øZ...
- Page 18 2 L1 71 en L1C + B1C (DN 80...400) Dimensions, mm Type valve and Weight actuator L1C 18 - B1C20 1090 1105 L1C 18 - B1C25 1040 1150 1180 L1C 18 - B1C32 1330 1235 1265 * = Dimension H for B1CM L1C + B1C (DN 500...1000) Dimensions, mm Type valve and...
- Page 19 2 L1 71 en L1C + B1J Dimensions, mm Type valve and Weight actuator L1C 18 -B1J20 1200 1155 L1C 18 -B1J25 1530 1200 1245 L1C 18 - B1J32 1830 1410 1305 L1C 20 - B1J25 1530 1200 1330 L1C 20 - B1J32 1830 1410 1390...
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Page 20: Type Code
ASTM A352 gr. LCC Special Metso Flow Control 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, M A 01545, USA. Tel. +1 508 852 0200. Fax +1 508 852 8172 South America, Av.
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