Cv-values: RE

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Series	Code	Description
RE	RE	NELES RE SERIES V-PORT SEGMENT VALVE, METAL SEATED

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IMO

Technical bulletin

Neles RE series V-port segment valves are economical high performance valves in a quarterturn design. Carefully designed V-ported segment, low torque requiremments and clearance-free movement result in good control performance. Sizes DN 25...800 (1"...32"), available in flanged bodies to fit ANSI 150 and 300 (600 in 1”); PN 10, 16, 25 and 40 (63 and 100 in DN25); and JIS 10, 16 and 20 pipe flanges. Small Cv trims available for DN25 / NPS01.

C_v-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
25	1	0	0.52	1.13	2.23	3.83	5.95	8.58	11.7	16.2	24.1	45
25	1	1	0.48	0.89	1.4	2.09	2.91	4.06	5.63	7.66	10.7	15
25	1	2	0.241	0.445	0.649	0.883	1.17	1.54	2.04	2.77	3.76	5
25	1	3	0.1	0.2	0.31	0.41	0.54	0.67	0.83	1.02	1.26	1.55
25	1	4	0.03	0.06	0.1	0.14	0.185	0.235	0.285	0.345	0.42	0.5
40	1.5	0	1.33	3.27	6.44	11.1	17.2	24.8	33.9	46.5	69.3	110
50	2	0	2.05	5.07	10	17.2	26.6	38.4	52.5	72.4	108	163
65	2.5	0	3.26	8.02	15.9	27.3	42.3	61	83.4	114	170	280
80	3	0	4.73	11.6	23	39.4	61	88.2	121	165	246	420
100	4	0	7.57	18.6	36.8	63.1	97.7	141	193	264	393	620
150	6	0	13.9	34.1	67.2	115	178	258	352	484	719	1260
200	8	0	22.5	55.3	109	187	290	418	571	784	1164	2030
250	10	0	35.3	86.9	171	294	455	658	900	1236	1831	3210
300	12	0	49.8	123	243	418	648	937	1278	1754	2601	4490
350	14	0	63.9	158	311	534	827	1193	1628	2237	3320	6440
400	16	0	85.4	210	414	713	1106	1599	2180	2989	4432	8510
500	20	0	130.6	321	633	1090	1692	2446	3334	4571	6778	13020
600	24	0	198	486	958	1649	2560	3701	5045	6916	10255	19700
700	28	0	254	624	1230	2118	3288	4753	6479	8882	13171	25300
800	32	0	321	789	1556	2679	4159	6012	8195	11234	16659	32000

C_v/d²-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
25	1	0	0.75	0.81	0.86	0.89	0.9	0.91	0.91	0.93	0.95	0.98
25	1	1	0.682	0.849	0.885	0.885	0.873	0.847	0.832	0.818	0.817	0.823
25	1	2	0.877	0.88	0.82	0.748	0.701	0.673	0.646	0.635	0.634	0.643
25	1	3	0.885	0.774	0.681	0.602	0.542	0.503	0.471	0.45	0.439	0.432
25	1	4	0.77	0.569	0.475	0.406	0.359	0.332	0.311	0.297	0.29	0.285
40	1.5	0	0.71	0.79	0.83	0.86	0.9	0.93	0.96	0.96	0.98	0.98
50	2	0	0.71	0.8	0.84	0.88	0.9	0.93	0.96	0.97	0.98	0.99
65	2.5	0	0.73	0.79	0.82	0.86	0.89	0.92	0.95	0.97	0.98	0.99
80	3	0	0.69	0.77	0.81	0.85	0.88	0.91	0.94	0.96	0.97	0.98
100	4	0	0.641	0.753	0.8	0.84	0.878	0.915	0.945	0.966	0.978	0.985
150	6	0	0.7	0.77	0.81	0.84	0.89	0.93	0.96	0.98	0.98	0.98
200	8	0	0.68	0.75	0.79	0.83	0.88	0.92	0.96	0.98	0.98	0.98
250	10	0	0.69	0.74	0.78	0.83	0.87	0.91	0.95	0.97	0.98	0.98
300	12	0	0.66	0.72	0.76	0.81	0.86	0.91	0.95	0.97	0.98	0.98
350	14	0	0.65	0.7	0.75	0.8	0.84	0.89	0.93	0.96	0.98	0.98
400	16	0	0.66	0.71	0.75	0.8	0.84	0.89	0.93	0.96	0.97	0.98
500	20	0	0.66	0.71	0.75	0.8	0.84	0.89	0.93	0.96	0.97	0.98
600	24	0	0.66	0.71	0.75	0.8	0.84	0.89	0.93	0.96	0.97	0.98
700	28	0	0.66	0.71	0.75	0.8	0.84	0.89	0.93	0.96	0.97	0.98
800	32	0	0.66	0.71	0.75	0.8	0.84	0.89	0.93	0.96	0.97	0.98

F_L-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
25	1	0	0.94	0.93	0.92	0.9	0.87	0.84	0.8	0.77	0.68	0.46
25	1	1	0.94	0.94	0.93	0.93	0.92	0.9	0.87	0.85	0.81	0.78
25	1	2	0.94	0.94	0.94	0.94	0.93	0.93	0.93	0.92	0.9	0.88
25	1	3	0.94	0.94	0.94	0.94	0.94	0.94	0.94	0.94	0.93	0.93
25	1	4	0.94	0.94	0.94	0.94	0.94	0.94	0.94	0.94	0.94	0.94
40	1.5	0	0.94	0.93	0.92	0.88	0.85	0.81	0.78	0.72	0.61	0.42
50	2	0	0.94	0.93	0.92	0.89	0.86	0.83	0.79	0.75	0.65	0.46
65	2.5	0	0.94	0.93	0.92	0.89	0.86	0.82	0.79	0.75	0.65	0.46
80	3	0	0.94	0.93	0.92	0.89	0.86	0.82	0.79	0.75	0.65	0.44
100	4	0	0.94	0.93	0.92	0.9	0.87	0.84	0.8	0.76	0.68	0.53
150	6	0	0.94	0.94	0.93	0.91	0.88	0.86	0.82	0.79	0.73	0.57
200	8	0	0.94	0.94	0.93	0.92	0.89	0.86	0.83	0.8	0.75	0.6
250	10	0	0.94	0.94	0.93	0.92	0.89	0.86	0.83	0.8	0.75	0.6
300	12	0	0.94	0.94	0.93	0.92	0.89	0.86	0.84	0.8	0.75	0.61
350	14	0	0.94	0.94	0.93	0.92	0.89	0.87	0.84	0.81	0.76	0.59
400	16	0	0.94	0.94	0.93	0.92	0.89	0.87	0.84	0.81	0.76	0.58
500	20	0	0.94	0.94	0.93	0.92	0.89	0.87	0.84	0.81	0.76	0.59
600	24	0	0.94	0.94	0.93	0.92	0.89	0.86	0.84	0.8	0.75	0.57
700	28	0	0.94	0.94	0.93	0.92	0.89	0.87	0.84	0.81	0.76	0.59
800	32	0	0.94	0.94	0.93	0.92	0.9	0.87	0.85	0.81	0.77	0.61

X_T-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
25	1	0	0.64	0.64	0.63	0.63	0.61	0.58	0.53	0.47	0.37	0.19
25	1	1	0.64	0.64	0.64	0.64	0.63	0.62	0.61	0.59	0.54	0.49
25	1	2	0.64	0.64	0.64	0.64	0.64	0.64	0.64	0.63	0.63	0.62
25	1	3	0.64	0.64	0.64	0.64	0.64	0.64	0.64	0.64	0.64	0.64
25	1	4	0.64	0.64	0.64	0.64	0.64	0.64	0.64	0.64	0.64	0.64
40	1.5	0	0.64	0.64	0.63	0.62	0.59	0.54	0.49	0.4	0.32	0.16
50	2	0	0.64	0.64	0.63	0.62	0.6	0.56	0.51	0.44	0.35	0.19
65	2.5	0	0.64	0.64	0.63	0.62	0.6	0.56	0.51	0.44	0.35	0.2
80	3	0	0.64	0.64	0.63	0.62	0.6	0.56	0.51	0.44	0.35	0.18
100	4	0	0.64	0.64	0.63	0.62	0.61	0.57	0.53	0.47	0.37	0.25
150	6	0	0.64	0.64	0.64	0.63	0.62	0.6	0.56	0.51	0.41	0.28
200	8	0	0.64	0.64	0.64	0.63	0.62	0.6	0.57	0.52	0.44	0.31
250	10	0	0.64	0.64	0.64	0.63	0.62	0.6	0.57	0.52	0.44	0.31
300	12	0	0.64	0.64	0.64	0.63	0.62	0.6	0.57	0.53	0.44	0.32
350	14	0	0.64	0.64	0.64	0.63	0.62	0.61	0.58	0.53	0.46	0.3
400	16	0	0.64	0.64	0.64	0.63	0.62	0.61	0.58	0.53	0.45	0.3
500	20	0	0.64	0.64	0.64	0.63	0.62	0.61	0.58	0.53	0.46	0.3
600	24	0	0.64	0.64	0.64	0.63	0.62	0.6	0.57	0.53	0.45	0.29
700	28	0	0.64	0.64	0.64	0.63	0.62	0.61	0.58	0.54	0.46	0.31
800	32	0	0.64	0.64	0.64	0.63	0.62	0.61	0.58	0.54	0.47	0.32

z-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
25	1	0	0.44	0.43	0.42	0.4	0.37	0.34	0.3	0.27	0.23	0.17
25	1	1	0.44	0.44	0.43	0.42	0.41	0.39	0.37	0.35	0.31	0.28
25	1	2	0.44	0.44	0.44	0.44	0.43	0.43	0.42	0.41	0.4	0.38
25	1	3	0.44	0.44	0.44	0.44	0.44	0.44	0.44	0.44	0.43	0.43
25	1	4	0.44	0.44	0.44	0.44	0.44	0.44	0.44	0.44	0.44	0.44
40	1.5	0	0.44	0.43	0.41	0.38	0.35	0.31	0.28	0.25	0.2	0.16
50	2	0	0.44	0.43	0.42	0.39	0.36	0.33	0.29	0.26	0.22	0.17
65	2.5	0	0.44	0.43	0.41	0.39	0.36	0.32	0.29	0.26	0.22	0.17
80	3	0	0.44	0.43	0.41	0.39	0.36	0.32	0.29	0.26	0.22	0.16
100	4	0	0.44	0.43	0.42	0.39	0.37	0.34	0.3	0.27	0.23	0.18
150	6	0	0.44	0.44	0.42	0.41	0.38	0.36	0.32	0.29	0.25	0.19
200	8	0	0.44	0.44	0.43	0.41	0.39	0.36	0.33	0.3	0.26	0.2
250	10	0	0.44	0.44	0.43	0.41	0.39	0.36	0.33	0.3	0.26	0.2
300	12	0	0.44	0.44	0.43	0.41	0.39	0.36	0.34	0.3	0.26	0.2
350	14	0	0.44	0.44	0.43	0.41	0.39	0.37	0.34	0.31	0.27	0.2
400	16	0	0.44	0.44	0.43	0.41	0.39	0.37	0.34	0.31	0.27	0.19
500	20	0	0.44	0.44	0.43	0.41	0.39	0.37	0.34	0.31	0.27	0.2
600	24	0	0.44	0.44	0.43	0.41	0.39	0.36	0.34	0.3	0.27	0.19
700	28	0	0.44	0.44	0.43	0.41	0.39	0.37	0.34	0.31	0.27	0.2
800	32	0	0.44	0.44	0.43	0.41	0.39	0.37	0.35	0.31	0.27	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