Cv-values: L800ANSI150FTC2

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Series	Code	Description
LW Model D	L800ANSI150FTC2_Q	SERIES LW HIGH PERFORMANCE TRIPLE ECCENTRIC METAL SEATED BUTTERFLY VALVE, MODEL D, PRESSURE CLASSES ASME150 & PN10-16, DRIVE SHAFT AND TRUNNION DESIGN, FLOW BALANCING TRIM Q-DISC

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IMO

Technical bulletin

Neles™ Q-Disc™ is a flow balancing trim for Neldisc™ Model D butterfly valves. Q-Disc design features extreme flow balancing for control service. Dynamic torque effect from the flow has been significantly reduced allowing high pressure drop service. With Q-Disc, the pressure is distributed more evenly resulting in lower torque requirement and more effective contol of flow. Q-Disc design also provides market leading noise reduction even up to 12 dB. The Q-Disc add-on is integrated to the standard Neles™ Neldisc™ LW, LG and L6 Model D disc. The valve itself is the Neles™ Neldisc™ Model D metal seated triple eccentric high performance butterfly valve.

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	11.8	32.2	50.6	63.7	74.5	90	113	140	170	196
100	4	0	19.8	50.7	76.4	89.2	102.5	125	162	218	281	330
150	6	0	44	77	121	176	242	330	473	660	880	1100
200	8	0	80.8	141	222	323	444	606	869	1210	1620	2020
250	10	0	146	256	403	586	805	1100	1570	2200	2930	3660
300	12	0	229	400	629	915	1260	1720	2460	3430	4580	5720

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

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	0.86	0.86	0.85	0.82	0.78	0.74	0.7	0.65	0.63
100	4	0	0.86	0.86	0.86	0.85	0.82	0.78	0.74	0.7	0.65	0.63
150	6	0	0.86	0.86	0.86	0.85	0.82	0.78	0.74	0.7	0.65	0.63
200	8	0	0.86	0.86	0.86	0.85	0.82	0.78	0.74	0.7	0.65	0.63
250	10	0	0.86	0.86	0.86	0.85	0.82	0.78	0.74	0.7	0.65	0.63
300	12	0	0.86	0.86	0.86	0.85	0.82	0.78	0.74	0.7	0.65	0.63

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	0.58	0.58	0.57	0.54	0.49	0.45	0.42	0.39	0.35	0.3
100	4	0	0.58	0.58	0.57	0.54	0.49	0.45	0.42	0.39	0.35	0.3
150	6	0	0.58	0.58	0.57	0.54	0.49	0.45	0.42	0.39	0.35	0.3
200	8	0	0.58	0.58	0.57	0.54	0.49	0.45	0.42	0.39	0.35	0.3
250	10	0	0.58	0.58	0.57	0.54	0.49	0.45	0.42	0.39	0.35	0.3
300	12	0	0.58	0.58	0.57	0.54	0.49	0.45	0.42	0.39	0.35	0.3

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	0.52	0.5	0.45	0.41	0.38	0.35	0.31	0.26	0.22	0.2
100	4	0	0.52	0.5	0.45	0.41	0.38	0.35	0.31	0.26	0.22	0.2
150	6	0	0.52	0.5	0.45	0.41	0.38	0.35	0.31	0.26	0.22	0.2
200	8	0	0.52	0.5	0.45	0.41	0.38	0.35	0.31	0.26	0.22	0.2
250	10	0	0.52	0.5	0.45	0.41	0.38	0.35	0.31	0.26	0.22	0.2
300	12	0	0.52	0.5	0.45	0.41	0.38	0.35	0.31	0.26	0.22	0.2

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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