Cv-values: L800ANSI300FTC2

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Series	Code	Description
LG Model D	L800ANSI300FTC2	SERIES LG HIGH PERFORMANCE TRIPLE ECCENTRIC METAL SEATED BUTTERFLY VALVE, MODEL D, PRESSURE CLASSES ASME300 & PN25-40, DRIVE SHAFT AND TRUNNION DESIGN

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Technical bulletin

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.

C_v-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
80	3	0	13.2	35.8	59.8	84.9	115	150	184	212	231	247
100	4	0	28.9	57.8	86.8	121	164	222	289	376	463	482
150	6	0	75.6	151	227	315	428	580	756	983	1210	1260
200	8	0	109	217	326	453	615	833	1090	1410	1740	1810
250	10	0	216	432	648	900	1220	1660	2160	2810	3460	3600
300	12	0	280	560	841	1170	1590	2150	2800	3640	4480	4670
350	14	0	364	673	1027	1505	2105	2702	3418	4221	4878	5500
400	16	0	480	863	1307	1885	2542	3348	4150	5201	5971	6580
450	18	0	589	1077	1694	2470	3488	4617	5788	7218	8619	9430
500	20	0	712	1327	2057	3006	4105	5467	6775	8470	10003	11200
600	24	0	1021	1825	2846	4247	6035	7995	9843	12446	15013	16700

C_v/d²-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
80	3	0	0.128	0.151	0.187	0.22	0.256	0.291	0.315	0.339	0.364	0.383
100	4	0	0.128	0.151	0.187	0.22	0.256	0.288	0.313	0.335	0.359	0.376
150	6	0	0.088	0.124	0.161	0.198	0.239	0.282	0.32	0.35	0.377	0.398
200	8	0	0.088	0.124	0.161	0.199	0.24	0.284	0.32	0.349	0.375	0.396
250	10	0	0.1	0.133	0.168	0.204	0.245	0.288	0.322	0.35	0.376	0.396
300	12	0	0.088	0.124	0.159	0.197	0.24	0.284	0.322	0.352	0.378	0.4
350	14	0	0.088	0.124	0.159	0.197	0.24	0.284	0.322	0.352	0.378	0.4
400	16	0	0.088	0.124	0.159	0.197	0.24	0.284	0.322	0.352	0.378	0.4
450	18	0	0.088	0.124	0.159	0.197	0.24	0.284	0.322	0.352	0.378	0.4
500	20	0	0.088	0.124	0.159	0.197	0.24	0.284	0.322	0.352	0.378	0.4
600	24	0	0.088	0.124	0.159	0.197	0.24	0.284	0.322	0.352	0.378	0.4

F_L-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
80	3	0	0.86	0.85	0.82	0.78	0.74	0.7	0.67	0.64	0.61	0.58
100	4	0	0.86	0.85	0.82	0.78	0.74	0.7	0.67	0.64	0.61	0.58
150	6	0	0.85	0.83	0.81	0.78	0.75	0.7	0.64	0.58	0.53	0.49
200	8	0	0.85	0.83	0.81	0.78	0.75	0.7	0.64	0.58	0.53	0.49
250	10	0	0.85	0.83	0.81	0.78	0.75	0.7	0.64	0.58	0.53	0.49
300	12	0	0.85	0.83	0.81	0.78	0.75	0.7	0.64	0.58	0.53	0.49
350	14	0	0.85	0.83	0.81	0.78	0.75	0.7	0.64	0.58	0.53	0.49
400	16	0	0.85	0.83	0.81	0.78	0.75	0.7	0.64	0.58	0.53	0.49
450	18	0	0.85	0.83	0.81	0.78	0.75	0.7	0.64	0.58	0.53	0.49
500	20	0	0.85	0.83	0.81	0.78	0.75	0.7	0.64	0.58	0.53	0.49
600	24	0	0.85	0.83	0.81	0.78	0.75	0.7	0.64	0.58	0.53	0.49

X_T-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
80	3	0	0.5	0.5	0.48	0.45	0.41	0.36	0.31	0.25	0.22	0.19
100	4	0	0.5	0.5	0.48	0.45	0.41	0.36	0.31	0.25	0.22	0.19
150	6	0	0.5	0.5	0.48	0.45	0.41	0.36	0.31	0.25	0.22	0.19
200	8	0	0.5	0.5	0.48	0.45	0.41	0.36	0.31	0.25	0.22	0.19
250	10	0	0.5	0.5	0.48	0.45	0.41	0.36	0.31	0.25	0.22	0.19
300	12	0	0.5	0.5	0.48	0.45	0.41	0.36	0.31	0.25	0.22	0.19
350	14	0	0.5	0.5	0.48	0.45	0.41	0.36	0.31	0.25	0.22	0.19
400	16	0	0.5	0.5	0.48	0.45	0.41	0.36	0.31	0.25	0.22	0.19
450	18	0	0.5	0.5	0.48	0.45	0.41	0.36	0.31	0.25	0.22	0.19
500	20	0	0.5	0.5	0.48	0.45	0.41	0.36	0.31	0.25	0.22	0.19
600	24	0	0.5	0.5	0.48	0.45	0.41	0.36	0.31	0.25	0.22	0.19

z-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
80	3	0	0.42	0.36	0.31	0.28	0.26	0.24	0.22	0.19	0.17	0.16
100	4	0	0.42	0.36	0.31	0.28	0.26	0.24	0.22	0.19	0.17	0.16
150	6	0	0.42	0.36	0.31	0.28	0.26	0.24	0.22	0.19	0.17	0.16
200	8	0	0.42	0.36	0.31	0.28	0.26	0.24	0.22	0.19	0.17	0.16
250	10	0	0.42	0.36	0.31	0.28	0.26	0.24	0.22	0.19	0.17	0.16
300	12	0	0.42	0.36	0.31	0.28	0.26	0.24	0.22	0.19	0.17	0.16
350	14	0	0.4	0.36	0.33	0.3	0.28	0.25	0.22	0.2	0.17	0.15
400	16	0	0.4	0.36	0.33	0.3	0.28	0.25	0.22	0.2	0.17	0.15
450	18	0	0.4	0.36	0.33	0.3	0.28	0.25	0.22	0.2	0.17	0.15
500	20	0	0.4	0.36	0.33	0.3	0.28	0.25	0.22	0.2	0.17	0.15
600	24	0	0.4	0.36	0.33	0.3	0.28	0.25	0.22	0.2	0.17	0.15

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

Cv-values

Cv/d2-values

FL-values

XT-values

z-values

C_v-values

C_v/d²-values

F_L-values

X_T-values