Cv-values: D5

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Series	Code	Description
D5	D5	NELES TRUNNION MOUNTED BALL VALVE SERIES D5, CLASS 150-300

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IMO

Technical bulletin

The D-series valve is a rotary control valve, a trunnion mounted, reduced bore ball valve featuring the Stemball™ concept. D-series offers unsurpassed control stability, wide rangeability and tight shut-off with all-metal seats. The control seat is spring-loaded, capable of easing the contact on ball when throttling to eliminate friction, but assuring durable tightness at shut-off. Alternatively, continuous contact seats are available when this is advantageous in the service. The D-series valves are available as one or two-seated versions and can be used in on-off services, too. Size range is DN 200...600 (8"...24") in pressure classes ANSI 150, 300. ANSI 600 size range is DN 80...900 (3"...36").

C_v-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
200	8	0	15	39.8	74.7	124	190	275	520	905	1643	3500
250	10	0	28.3	75	141	234	358	518	980	1707	3099	6600
300	12	0	47.6	126	237	394	602	871	1649	2871	5212	11100
350	14	0	72.9	193	363	603	922	1334	2525	4397	7893	17000
400	16	0	95.9	253	476	791	1209	1750	3313	5767	10471	22300
450	18	0	133	352	661	1100	1681	2432	4605	8017	14556	31000
500	20	0	171	454	853	1419	2169	3138	5942	10345	18782	40000
600	24	0	193	511	960	1596	2441	3531	6685	11638	21130	45000

C_v/d²-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
200	8	0	0.503	0.686	0.794	0.869	0.921	0.956	0.979	0.992	0.998	1
250	10	0	0.54	0.7	0.802	0.874	0.925	0.958	0.98	0.992	0.998	1
300	12	0	0.528	0.694	0.798	0.872	0.923	0.958	0.979	0.992	0.998	1
350	14	0	0.566	0.712	0.809	0.879	0.927	0.96	0.981	0.993	0.998	1
400	16	0	0.547	0.702	0.803	0.875	0.925	0.959	0.98	0.992	0.998	1
450	18	0	0.554	0.705	0.805	0.876	0.926	0.959	0.98	0.992	0.998	1
500	20	0	0.58	0.719	0.814	0.881	0.929	0.961	0.981	0.993	0.998	1
600	24	0	0.542	0.699	0.801	0.874	0.925	0.959	0.98	0.992	0.998	1

F_L-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
200	8	0	0.91	0.91	0.91	0.91	0.9	0.89	0.85	0.79	0.71	0.58
250	10	0	0.91	0.91	0.91	0.9	0.89	0.88	0.83	0.76	0.68	0.54
300	12	0	0.91	0.91	0.91	0.9	0.89	0.87	0.81	0.74	0.66	0.51
350	14	0	0.91	0.91	0.91	0.9	0.89	0.86	0.8	0.73	0.64	0.48
400	16	0	0.91	0.91	0.91	0.9	0.88	0.86	0.8	0.73	0.64	0.48
450	18	0	0.91	0.91	0.91	0.9	0.88	0.86	0.79	0.72	0.62	0.45
500	20	0	0.91	0.91	0.91	0.9	0.88	0.85	0.78	0.71	0.61	0.44
600	24	0	0.91	0.91	0.91	0.9	0.89	0.87	0.81	0.74	0.66	0.51

X_T-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
200	8	0	0.82	0.82	0.82	0.82	0.8	0.77	0.67	0.54	0.37	0.2
250	10	0	0.82	0.82	0.82	0.81	0.79	0.75	0.63	0.48	0.32	0.18
300	12	0	0.82	0.82	0.82	0.8	0.77	0.73	0.6	0.43	0.29	0.16
350	14	0	0.82	0.82	0.82	0.8	0.76	0.71	0.56	0.4	0.27	0.15
400	16	0	0.82	0.82	0.82	0.8	0.76	0.71	0.56	0.4	0.26	0.15
450	18	0	0.82	0.82	0.81	0.79	0.75	0.69	0.54	0.38	0.24	0.13
500	20	0	0.82	0.82	0.81	0.79	0.75	0.68	0.53	0.37	0.23	0.13
600	24	0	0.82	0.82	0.82	0.8	0.77	0.73	0.59	0.42	0.28	0.16

z-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
200	8	0	0.52	0.52	0.51	0.5	0.47	0.44	0.36	0.28	0.2	0.09
250	10	0	0.52	0.52	0.51	0.49	0.46	0.42	0.34	0.25	0.17	0.09
300	12	0	0.52	0.52	0.51	0.48	0.44	0.4	0.31	0.22	0.15	0.08
350	14	0	0.52	0.52	0.5	0.47	0.43	0.39	0.29	0.21	0.14	0.08
400	16	0	0.52	0.52	0.5	0.47	0.43	0.39	0.29	0.21	0.14	0.08
450	18	0	0.52	0.52	0.5	0.46	0.42	0.38	0.28	0.2	0.12	0.08
500	20	0	0.52	0.52	0.49	0.46	0.42	0.37	0.27	0.19	0.12	0.08
600	24	0	0.52	0.52	0.51	0.48	0.44	0.4	0.31	0.22	0.15	0.08

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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