Cv-values: BWGG

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Series	Code	Description
BWH	BWGG_CS	NELES BWH-SERIES, METAL SEATED DOUBLE ECCENTRIC HIGH TEMP VALVE, CARBON STEEL, RATING ASME 900 (BWH_G)

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Technical bulletin

The Type BWH_G 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 900, PN150. Use Nelprof code BWH_G 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	19	37	66	101	139	186	246	288	325	338
200	8	0	42	83	146	223	314	431	578	711	842	910
250	10	0	68	136	242	376	542	764	1043	1347	1683	1895
300	12	0	72	144	256	407	611	901	1267	1754	2335	2744
350	14	0	105	209	363	583	891	1319	1850	2562	3396	3983
400	16	0	143	285	489	787	1215	1811	2509	3501	4629	5421
450	18	0	184	368	619	1002	1576	2363	3264	4549	5990	7011
500	20	0	211	421	721	1201	1925	2896	4018	5564	7392	8729
600	24	0	260	520	928	1658	2776	4205	5846	8048	10917	13149

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	0.84	0.83	0.82	0.8	0.78	0.77	0.77
200	8	0	0.86	0.86	0.85	0.83	0.82	0.8	0.77	0.76	0.74	0.73
250	10	0	0.86	0.86	0.85	0.83	0.81	0.79	0.76	0.74	0.71	0.69
300	12	0	0.86	0.86	0.85	0.84	0.83	0.8	0.78	0.75	0.72	0.69
350	14	0	0.86	0.86	0.85	0.84	0.82	0.8	0.77	0.74	0.71	0.68
400	16	0	0.86	0.86	0.85	0.84	0.82	0.79	0.77	0.74	0.7	0.67
450	18	0	0.86	0.86	0.85	0.84	0.82	0.79	0.77	0.73	0.7	0.67
500	20	0	0.86	0.86	0.85	0.84	0.82	0.79	0.77	0.74	0.7	0.67
600	24	0	0.86	0.86	0.85	0.84	0.82	0.79	0.77	0.74	0.69	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	0.5	0.49	0.48
200	8	0	0.53	0.53	0.53	0.53	0.52	0.51	0.49	0.46	0.43	0.42
250	10	0	0.53	0.53	0.53	0.53	0.52	0.5	0.47	0.43	0.39	0.37
300	12	0	0.53	0.53	0.53	0.53	0.53	0.52	0.49	0.44	0.4	0.37
350	14	0	0.53	0.53	0.53	0.53	0.53	0.51	0.48	0.43	0.39	0.36
400	16	0	0.53	0.53	0.53	0.53	0.53	0.51	0.48	0.42	0.38	0.35
450	18	0	0.53	0.53	0.53	0.53	0.53	0.51	0.47	0.42	0.38	0.35
500	20	0	0.53	0.53	0.53	0.53	0.53	0.51	0.47	0.42	0.38	0.35
600	24	0	0.53	0.53	0.53	0.53	0.53	0.51	0.47	0.42	0.37	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	0.35	0.33	0.3	0.29	0.27	0.26	0.26	0.25
200	8	0	0.38	0.37	0.34	0.31	0.29	0.27	0.26	0.25	0.24	0.23
250	10	0	0.38	0.37	0.34	0.3	0.28	0.26	0.25	0.23	0.22	0.21
300	12	0	0.38	0.38	0.35	0.33	0.3	0.28	0.26	0.24	0.22	0.21
350	14	0	0.38	0.38	0.35	0.32	0.29	0.27	0.25	0.24	0.22	0.21
400	16	0	0.38	0.37	0.35	0.32	0.29	0.27	0.25	0.23	0.22	0.2
450	18	0	0.38	0.37	0.35	0.32	0.29	0.27	0.25	0.23	0.21	0.2
500	20	0	0.38	0.38	0.35	0.32	0.29	0.27	0.25	0.23	0.21	0.2
600	24	0	0.38	0.38	0.36	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