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SeriesCodeDescription
LG Model DL800ANSI300FTC2SERIES LG HIGH PERFORMANCE TRIPLE ECCENTRIC METAL SEATED BUTTERFLY VALVE, MODEL D, PRESSURE CLASSES ASME300 & PN25-40, DRIVE SHAFT AND TRUNNION DESIGN

Neles™ Neldisc™ Model D is a metal seated triple eccentric high performance butterfly valve that provides long lasting tight shut-off with excellent flow characteristics and high capacity. The L-Series are widely used in pulp & paper, chemical, petrochemical and refining industries. With nearly equal percentage characteristics and superior tightness, Neldisc triple eccentric butterfly valves operate both in control and tight shutoff applications. As a result of the unique triple offset geometry of Neldisc, the contact between disc and seat is mechanically induced and does not rely on assistance from differential pressure. This design also provides extended operational life in control, high cycle, high temperature and abrasive applications. Due to a number of special constructions, developed from the versatile Neldisc design, these valves offer a powerful tool for standardization and are truly high performance valves. The Neldisc high-performance butterfly valve is available in double flange (L6), wafer (LW) and lug (LG) body types with a range of materials and seat combinations suitable for service in a wide variety of applications including NACE MR0103 & MR0175.

Cv-values

SIZERelative opening h
DNINCHRN10 %20 %30 %40 %50 %60 %70 %80 %90 %100 %
RN = Reduction Number
803013.235.859.884.9115150184212231247
1004028.957.886.8121164222289376463482
1506075.615122731542858075698312101260
200801092173264536158331090141017401810
250100216432648900122016602160281034603600
3001202805608411170159021502800364044804670
35014036467310271505210527023418422148785500
40016048086313071885254233484150520159716580
450180589107716942470348846175788721886199430
50020071213272057300641055467677584701000311200
6002401021182528464247603579959843124461501316700

Cv/d2-values

SIZERelative opening h
DNINCHRN10 %20 %30 %40 %50 %60 %70 %80 %90 %100 %
RN = Reduction Number
80300.1280.1510.1870.220.2560.2910.3150.3390.3640.383
100400.1280.1510.1870.220.2560.2880.3130.3350.3590.376
150600.0880.1240.1610.1980.2390.2820.320.350.3770.398
200800.0880.1240.1610.1990.240.2840.320.3490.3750.396
2501000.10.1330.1680.2040.2450.2880.3220.350.3760.396
3001200.0880.1240.1590.1970.240.2840.3220.3520.3780.4
3501400.0880.1240.1590.1970.240.2840.3220.3520.3780.4
4001600.0880.1240.1590.1970.240.2840.3220.3520.3780.4
4501800.0880.1240.1590.1970.240.2840.3220.3520.3780.4
5002000.0880.1240.1590.1970.240.2840.3220.3520.3780.4
6002400.0880.1240.1590.1970.240.2840.3220.3520.3780.4

FL-values

SIZERelative opening h
DNINCHRN10 %20 %30 %40 %50 %60 %70 %80 %90 %100 %
RN = Reduction Number
80300.860.850.820.780.740.70.670.640.610.58
100400.860.850.820.780.740.70.670.640.610.58
150600.850.830.810.780.750.70.640.580.530.49
200800.850.830.810.780.750.70.640.580.530.49
2501000.850.830.810.780.750.70.640.580.530.49
3001200.850.830.810.780.750.70.640.580.530.49
3501400.850.830.810.780.750.70.640.580.530.49
4001600.850.830.810.780.750.70.640.580.530.49
4501800.850.830.810.780.750.70.640.580.530.49
5002000.850.830.810.780.750.70.640.580.530.49
6002400.850.830.810.780.750.70.640.580.530.49

XT-values

SIZERelative opening h
DNINCHRN10 %20 %30 %40 %50 %60 %70 %80 %90 %100 %
RN = Reduction Number
80300.50.50.480.450.410.360.310.250.220.19
100400.50.50.480.450.410.360.310.250.220.19
150600.50.50.480.450.410.360.310.250.220.19
200800.50.50.480.450.410.360.310.250.220.19
2501000.50.50.480.450.410.360.310.250.220.19
3001200.50.50.480.450.410.360.310.250.220.19
3501400.50.50.480.450.410.360.310.250.220.19
4001600.50.50.480.450.410.360.310.250.220.19
4501800.50.50.480.450.410.360.310.250.220.19
5002000.50.50.480.450.410.360.310.250.220.19
6002400.50.50.480.450.410.360.310.250.220.19

z-values

SIZERelative opening h
DNINCHRN10 %20 %30 %40 %50 %60 %70 %80 %90 %100 %
RN = Reduction Number
80300.420.360.310.280.260.240.220.190.170.16
100400.420.360.310.280.260.240.220.190.170.16
150600.420.360.310.280.260.240.220.190.170.16
200800.420.360.310.280.260.240.220.190.170.16
2501000.420.360.310.280.260.240.220.190.170.16
3001200.420.360.310.280.260.240.220.190.170.16
3501400.40.360.330.30.280.250.220.20.170.15
4001600.40.360.330.30.280.250.220.20.170.15
4501800.40.360.330.30.280.250.220.20.170.15
5002000.40.360.330.30.280.250.220.20.170.15
6002400.40.360.330.30.280.250.220.20.170.15

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File creation day: 22.4.2024 (day.month.year)