Cv-values: L800ANSI150FTC2

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Series	Code	Description
LW Model D	L800ANSI150FTC2	SERIES LW HIGH PERFORMANCE TRIPLE ECCENTRIC METAL SEATED BUTTERFLY VALVE, MODEL D, PRESSURE CLASSES ASME150 & PN10-16, 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	81.5	139	212	310	440	619	880	1190	1520	1630
200	8	0	120	204	312	456	648	912	1300	1750	2230	2400
250	10	0	223	379	580	847	1200	1690	2410	3260	4150	4460
300	12	0	341	580	887	1300	1840	2590	3680	4980	6340	6820
350	14	0	329	661	1045	1568	2206	3034	4055	5291	6600	7850
400	16	0	385	812	1281	1949	2783	3836	5165	6792	8401	9780
450	18	0	546	1067	1690	2568	3663	5093	6962	8961	11509	13500
500	20	0	683	1296	2068	3157	4539	6305	8540	11135	14217	16600
600	24	0	984	1825	2896	4416	6380	8925	11990	15450	20025	23500

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	0.095	0.126	0.159	0.195	0.235	0.279	0.322	0.356	0.383	0.405
200	8	0	0.098	0.128	0.16	0.196	0.236	0.28	0.323	0.36	0.389	0.41
250	10	0	0.087	0.12	0.153	0.191	0.233	0.278	0.322	0.361	0.39	0.413
300	12	0	0.086	0.119	0.152	0.19	0.232	0.278	0.322	0.361	0.39	0.413
350	14	0	0.086	0.119	0.152	0.19	0.232	0.278	0.322	0.361	0.39	0.413
400	16	0	0.086	0.119	0.152	0.19	0.232	0.278	0.322	0.361	0.39	0.413
450	18	0	0.086	0.119	0.152	0.19	0.232	0.278	0.322	0.361	0.39	0.413
500	20	0	0.086	0.119	0.152	0.19	0.232	0.278	0.322	0.361	0.39	0.413
600	24	0	0.086	0.119	0.152	0.19	0.232	0.278	0.322	0.361	0.39	0.413

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	0.5	0.45
200	8	0	0.85	0.83	0.81	0.78	0.75	0.7	0.64	0.58	0.5	0.45
250	10	0	0.85	0.83	0.81	0.78	0.75	0.7	0.64	0.58	0.5	0.45
300	12	0	0.85	0.83	0.81	0.78	0.75	0.7	0.64	0.58	0.5	0.45
350	14	0	0.85	0.83	0.81	0.78	0.75	0.7	0.64	0.58	0.5	0.45
400	16	0	0.85	0.83	0.81	0.78	0.75	0.7	0.64	0.58	0.5	0.45
450	18	0	0.85	0.83	0.81	0.78	0.75	0.7	0.64	0.58	0.5	0.45
500	20	0	0.85	0.83	0.81	0.78	0.75	0.7	0.64	0.58	0.5	0.45
600	24	0	0.85	0.83	0.81	0.78	0.75	0.7	0.64	0.58	0.5	0.45

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	0.55	0.54	0.52	0.5	0.46	0.4	0.32	0.21	0.16	0.14
100	4	0	0.55	0.54	0.52	0.5	0.46	0.4	0.32	0.21	0.16	0.14
150	6	0	0.55	0.54	0.52	0.5	0.46	0.4	0.32	0.21	0.16	0.14
200	8	0	0.55	0.54	0.52	0.5	0.46	0.4	0.32	0.21	0.16	0.14
250	10	0	0.55	0.54	0.52	0.5	0.46	0.4	0.32	0.21	0.16	0.14
300	12	0	0.55	0.54	0.52	0.5	0.46	0.4	0.32	0.21	0.16	0.14
350	14	0	0.55	0.54	0.52	0.5	0.46	0.4	0.32	0.21	0.16	0.14
400	16	0	0.55	0.54	0.52	0.5	0.46	0.4	0.32	0.21	0.16	0.14
450	18	0	0.55	0.54	0.52	0.5	0.46	0.4	0.32	0.21	0.16	0.14
500	20	0	0.55	0.54	0.52	0.5	0.46	0.4	0.32	0.21	0.16	0.14
600	24	0	0.55	0.54	0.52	0.5	0.46	0.4	0.32	0.21	0.16	0.14

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	0.4	0.36	0.33	0.3	0.28	0.25	0.22	0.2	0.17	0.15
200	8	0	0.4	0.36	0.33	0.3	0.28	0.25	0.22	0.2	0.17	0.15
250	10	0	0.4	0.36	0.33	0.3	0.28	0.25	0.22	0.2	0.17	0.15
300	12	0	0.4	0.36	0.33	0.3	0.28	0.25	0.22	0.2	0.17	0.15
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