Cv-values: BWHG

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Series	Code	Description
BWH	BWHG_CS	NELES BWH-SERIES, METAL SEATED DOUBLE ECCENTRIC HIGH TEMP VALVE, CARBON STEEL, BODY RATING ASME 1500 TRIM RATING ASME 900 (BWH_H/G)

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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	15	31	56	92	135	183	244	299	332	364
200	8	0	31	61	116	198	289	375	495	631	716	782
250	10	0	57	114	209	340	494	670	914	1214	1431	1567
300	12	0	88	177	303	462	664	954	1359	1897	2325	2548
350	14	0	134	268	433	648	946	1374	1947	2696	3328	3715
400	16	0	186	373	570	837	1242	1824	2570	3531	4388	4990
450	18	0	245	489	707	1019	1536	2280	3195	4355	5450	6313
500	20	0	301	602	878	1257	1873	2769	3889	5334	6625	7502
600	24	0	439	879	1292	1859	2758	4048	5661	8031	9840	10713

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	0.83	0.82	0.8	0.78	0.77	0.77
200	8	0	0.86	0.86	0.85	0.84	0.82	0.81	0.79	0.77	0.76	0.75
250	10	0	0.86	0.86	0.85	0.84	0.82	0.8	0.77	0.75	0.73	0.72
300	12	0	0.86	0.86	0.85	0.84	0.82	0.8	0.77	0.74	0.72	0.7
350	14	0	0.86	0.86	0.85	0.84	0.82	0.8	0.77	0.74	0.71	0.69
400	16	0	0.86	0.86	0.85	0.84	0.82	0.79	0.77	0.74	0.71	0.69
450	18	0	0.86	0.86	0.85	0.84	0.82	0.79	0.77	0.74	0.71	0.69
500	20	0	0.86	0.86	0.85	0.84	0.82	0.8	0.77	0.74	0.71	0.69
600	24	0	0.86	0.86	0.85	0.84	0.82	0.8	0.77	0.74	0.71	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	0.52	0.51	0.5	0.48	0.47
200	8	0	0.53	0.53	0.53	0.53	0.53	0.52	0.5	0.47	0.45	0.44
250	10	0	0.53	0.53	0.53	0.53	0.52	0.51	0.49	0.44	0.42	0.4
300	12	0	0.53	0.53	0.53	0.53	0.53	0.51	0.48	0.43	0.4	0.38
350	14	0	0.53	0.53	0.53	0.53	0.53	0.51	0.47	0.42	0.39	0.37
400	16	0	0.53	0.53	0.53	0.53	0.53	0.51	0.47	0.42	0.39	0.37
450	18	0	0.53	0.53	0.53	0.53	0.53	0.51	0.47	0.43	0.39	0.37
500	20	0	0.53	0.53	0.53	0.53	0.53	0.51	0.48	0.43	0.4	0.37
600	24	0	0.53	0.53	0.53	0.53	0.53	0.51	0.48	0.42	0.39	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	0.38	0.36	0.33	0.3	0.29	0.27	0.26	0.25	0.25
200	8	0	0.38	0.38	0.35	0.32	0.29	0.28	0.26	0.25	0.24	0.24
250	10	0	0.38	0.37	0.34	0.31	0.29	0.27	0.26	0.24	0.23	0.23
300	12	0	0.38	0.37	0.34	0.32	0.29	0.27	0.25	0.24	0.22	0.22
350	14	0	0.38	0.37	0.34	0.31	0.29	0.27	0.25	0.23	0.22	0.21
400	16	0	0.38	0.36	0.34	0.31	0.29	0.27	0.25	0.23	0.22	0.21
450	18	0	0.38	0.36	0.34	0.32	0.29	0.27	0.25	0.23	0.22	0.21
500	20	0	0.38	0.36	0.34	0.32	0.29	0.27	0.25	0.24	0.22	0.21
600	24	0	0.38	0.36	0.34	0.32	0.29	0.27	0.25	0.23	0.22	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