Cv-values: BWHF

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Series	Code	Description
BWH	BWHF_CS	NELES BWH-SERIES, METAL SEATED DOUBLE ECCENTRIC HIGH TEMP VALVE, CARBON STEEL, BODY RATING ASME 1500 TRIM RATING ASME 600 (BWH_H/F)

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Technical bulletin

The Type BWH_H refers for high temperature. The values for the standard valve are based on single U-shape seat construction and for standard materials. The material as well as the seat selection has an effect on valve dimensions and Nelprof sizing due to strength calculations. The valve is designed for control and on/off purposes. Temperature range starts from 0 ... 600 °C, pressure rating ANSI class 1500, PN250. Use Nelprof code BWH_H for Double Flanged, Wafer, Lug and Butt Weld End design sizing. For this valve also a derated trim option exists to increase flow capacity.

C_v-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
150	6	0	24	37	58	88	127	178	245	316	366	394
200	8	0	48	77	124	196	285	390	528	700	826	895
250	10	0	92	150	240	373	549	776	1079	1473	1803	2008
300	12	0	123	200	310	474	709	1047	1506	2128	2714	3107
350	14	0	173	287	436	665	1008	1501	2156	3036	3886	4464
400	16	0	221	375	562	854	1309	1967	2822	3960	5087	5862
450	18	0	274	467	686	1039	1613	2447	3505	4901	6319	7306
500	20	0	323	557	818	1237	1921	2917	4180	5847	7541	8704
600	24	0	480	829	1204	1830	2876	4382	6253	8843	11422	13188

C_v/d²-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
150	6	0	0.132	0.155	0.185	0.216	0.252	0.291	0.315	0.339	0.364	0.383
200	8	0	0.088	0.124	0.161	0.198	0.239	0.282	0.32	0.35	0.377	0.398
250	10	0	0.088	0.124	0.161	0.199	0.24	0.284	0.32	0.349	0.375	0.396
300	12	0	0.1	0.133	0.168	0.204	0.245	0.288	0.322	0.35	0.376	0.396
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
150	6	0	0.86	0.86	0.85	0.85	0.83	0.82	0.8	0.78	0.77	0.76
200	8	0	0.86	0.86	0.85	0.84	0.82	0.81	0.78	0.76	0.74	0.74
250	10	0	0.86	0.86	0.85	0.83	0.81	0.79	0.76	0.73	0.7	0.68
300	12	0	0.86	0.86	0.85	0.84	0.82	0.79	0.76	0.73	0.69	0.67
350	14	0	0.86	0.86	0.85	0.84	0.82	0.79	0.76	0.72	0.68	0.66
400	16	0	0.86	0.86	0.85	0.84	0.82	0.79	0.76	0.72	0.68	0.66
450	18	0	0.86	0.86	0.85	0.84	0.82	0.79	0.76	0.73	0.69	0.66
500	20	0	0.86	0.86	0.85	0.84	0.82	0.79	0.76	0.73	0.69	0.67
600	24	0	0.86	0.86	0.85	0.84	0.82	0.79	0.76	0.72	0.68	0.66

X_T-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
150	6	0	0.53	0.53	0.53	0.53	0.53	0.52	0.51	0.49	0.47	0.46
200	8	0	0.53	0.53	0.53	0.53	0.53	0.52	0.5	0.46	0.43	0.42
250	10	0	0.53	0.53	0.53	0.53	0.52	0.5	0.46	0.41	0.38	0.36
300	12	0	0.53	0.53	0.53	0.53	0.52	0.51	0.47	0.41	0.37	0.35
350	14	0	0.53	0.53	0.53	0.53	0.52	0.5	0.46	0.41	0.36	0.34
400	16	0	0.53	0.53	0.53	0.53	0.52	0.5	0.46	0.41	0.36	0.34
450	18	0	0.53	0.53	0.53	0.53	0.52	0.51	0.46	0.41	0.37	0.34
500	20	0	0.53	0.53	0.53	0.53	0.53	0.51	0.47	0.41	0.37	0.35
600	24	0	0.53	0.53	0.53	0.53	0.52	0.51	0.46	0.41	0.36	0.34

z-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
150	6	0	0.38	0.38	0.36	0.33	0.31	0.29	0.27	0.26	0.25	0.25
200	8	0	0.38	0.37	0.35	0.32	0.29	0.28	0.26	0.25	0.24	0.23
250	10	0	0.38	0.36	0.34	0.3	0.28	0.26	0.25	0.23	0.22	0.21
300	12	0	0.38	0.37	0.34	0.31	0.29	0.27	0.25	0.23	0.21	0.2
350	14	0	0.38	0.36	0.34	0.31	0.29	0.26	0.25	0.23	0.21	0.19
400	16	0	0.38	0.36	0.34	0.31	0.29	0.26	0.25	0.23	0.21	0.19
450	18	0	0.38	0.36	0.34	0.32	0.29	0.27	0.25	0.23	0.21	0.2
500	20	0	0.38	0.37	0.35	0.32	0.29	0.27	0.25	0.23	0.21	0.2
600	24	0	0.38	0.36	0.34	0.32	0.29	0.27	0.25	0.23	0.21	0.19

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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