Cv-values: BWHD

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Series	Code	Description
BWH	BWHD_CS	NELES BWH-SERIES, METAL SEATED DOUBLE ECCENTRIC HIGH TEMP VALVE, CARBON STEEL, BODY RATING ASME 1500 TRIM RATING ASME 300 (BWH_H/D)

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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	35	53	75	107	152	214	294	400	474	489
200	8	0	65	98	140	203	294	422	588	810	992	1076
250	10	0	113	172	247	367	547	804	1141	1599	2033	2325
300	12	0	134	205	297	456	710	1075	1562	2233	2965	3585
350	14	0	188	288	421	655	1029	1571	2288	3276	4350	5207
400	16	0	239	365	542	852	1351	2078	3034	4348	5775	6843
450	18	0	286	438	658	1047	1674	2595	3799	5450	7239	8493
500	20	0	336	513	761	1215	1966	3066	4481	6392	8561	10258
600	24	0	446	683	982	1580	2626	4149	6040	8513	11602	14511

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	0.86	0.85	0.84	0.83	0.81	0.78	0.77	0.77
200	8	0	0.86	0.86	0.85	0.85	0.84	0.82	0.8	0.77	0.76	0.75
250	10	0	0.86	0.86	0.85	0.84	0.83	0.81	0.78	0.75	0.73	0.71
300	12	0	0.86	0.86	0.86	0.85	0.83	0.81	0.78	0.76	0.73	0.7
350	14	0	0.86	0.86	0.86	0.85	0.83	0.81	0.78	0.75	0.72	0.69
400	16	0	0.86	0.86	0.86	0.85	0.83	0.81	0.78	0.75	0.71	0.69
450	18	0	0.86	0.86	0.86	0.85	0.83	0.81	0.78	0.75	0.72	0.69
500	20	0	0.86	0.86	0.86	0.85	0.83	0.81	0.78	0.75	0.72	0.69
600	24	0	0.86	0.86	0.86	0.85	0.84	0.82	0.79	0.76	0.73	0.7

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	0.53	0.52	0.5	0.48	0.47
200	8	0	0.53	0.53	0.53	0.53	0.53	0.53	0.51	0.48	0.45	0.44
250	10	0	0.53	0.53	0.53	0.53	0.53	0.52	0.5	0.45	0.41	0.39
300	12	0	0.53	0.53	0.53	0.53	0.53	0.52	0.5	0.45	0.41	0.38
350	14	0	0.53	0.53	0.53	0.53	0.53	0.52	0.49	0.44	0.4	0.37
400	16	0	0.53	0.53	0.53	0.53	0.53	0.52	0.49	0.44	0.4	0.37
450	18	0	0.53	0.53	0.53	0.53	0.53	0.52	0.49	0.44	0.4	0.37
500	20	0	0.53	0.53	0.53	0.53	0.53	0.52	0.5	0.45	0.4	0.37
600	24	0	0.53	0.53	0.53	0.53	0.53	0.52	0.5	0.46	0.41	0.38

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	0.37	0.36	0.34	0.32	0.3	0.28	0.26	0.25	0.25
200	8	0	0.38	0.37	0.36	0.33	0.31	0.29	0.27	0.25	0.24	0.24
250	10	0	0.38	0.37	0.35	0.33	0.3	0.28	0.26	0.24	0.23	0.22
300	12	0	0.38	0.38	0.36	0.33	0.31	0.28	0.26	0.24	0.23	0.21
350	14	0	0.38	0.37	0.36	0.33	0.3	0.28	0.26	0.24	0.22	0.21
400	16	0	0.38	0.38	0.36	0.33	0.3	0.28	0.26	0.24	0.22	0.21
450	18	0	0.38	0.38	0.36	0.33	0.3	0.28	0.26	0.24	0.22	0.21
500	20	0	0.38	0.38	0.36	0.34	0.31	0.28	0.26	0.24	0.23	0.21
600	24	0	0.38	0.38	0.37	0.34	0.31	0.29	0.26	0.25	0.23	0.21

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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