Cv-values: BWGF

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Series	Code	Description
BWH	BWGF_CS	NELES BWH-SERIES, METAL SEATED DOUBLE ECCENTRIC HIGH TEMP VALVE, CARBON STEEL, BODY RATING ASME 900 TRIM RATING ASME 600 (BWH_G/F)

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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	31	52	80	117	162	222	297	368	420	446
200	8	0	62	107	167	246	349	486	662	851	1017	1118
250	10	0	105	180	283	427	623	893	1245	1672	2107	2402
300	12	0	113	195	315	493	751	1123	1618	2299	3076	3644
350	14	0	150	258	409	645	998	1496	2149	3054	4069	4812
400	16	0	196	339	533	845	1320	1990	2835	4043	5368	6338
450	18	0	254	439	682	1086	1722	2611	3705	5280	6982	8235
500	20	0	285	491	777	1276	2061	3137	4467	6326	8442	10050
600	24	0	354	611	1013	1785	3011	4621	6603	9261	12607	15308

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	0.82	0.81	0.78	0.76	0.75	0.75
200	8	0	0.86	0.85	0.85	0.83	0.81	0.79	0.76	0.74	0.72	0.71
250	10	0	0.86	0.85	0.84	0.83	0.81	0.77	0.75	0.71	0.67	0.64
300	12	0	0.86	0.86	0.85	0.84	0.82	0.79	0.76	0.72	0.67	0.63
350	14	0	0.86	0.86	0.85	0.84	0.82	0.79	0.76	0.72	0.68	0.64
400	16	0	0.86	0.86	0.85	0.84	0.82	0.79	0.76	0.72	0.67	0.63
450	18	0	0.86	0.86	0.85	0.84	0.82	0.78	0.76	0.72	0.67	0.63
500	20	0	0.86	0.86	0.85	0.84	0.82	0.78	0.76	0.72	0.67	0.63
600	24	0	0.86	0.86	0.85	0.84	0.82	0.78	0.76	0.72	0.67	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
150	6	0	0.53	0.53	0.53	0.53	0.53	0.52	0.5	0.47	0.45	0.44
200	8	0	0.53	0.53	0.53	0.53	0.52	0.51	0.47	0.43	0.4	0.39
250	10	0	0.53	0.53	0.53	0.53	0.52	0.49	0.44	0.39	0.35	0.33
300	12	0	0.53	0.53	0.53	0.53	0.52	0.5	0.45	0.4	0.35	0.31
350	14	0	0.53	0.53	0.53	0.53	0.52	0.5	0.46	0.41	0.36	0.32
400	16	0	0.53	0.53	0.53	0.53	0.52	0.5	0.46	0.4	0.35	0.32
450	18	0	0.53	0.53	0.53	0.53	0.52	0.5	0.45	0.4	0.35	0.31
500	20	0	0.53	0.53	0.53	0.53	0.52	0.5	0.45	0.4	0.35	0.31
600	24	0	0.53	0.53	0.53	0.53	0.52	0.5	0.45	0.4	0.35	0.29

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	0.36	0.34	0.32	0.29	0.28	0.26	0.25	0.24	0.24
200	8	0	0.38	0.36	0.33	0.3	0.28	0.27	0.25	0.24	0.22	0.22
250	10	0	0.38	0.35	0.33	0.3	0.28	0.26	0.24	0.22	0.2	0.19
300	12	0	0.38	0.37	0.34	0.31	0.29	0.26	0.24	0.22	0.2	0.18
350	14	0	0.38	0.37	0.34	0.31	0.29	0.26	0.25	0.23	0.2	0.19
400	16	0	0.38	0.37	0.34	0.31	0.29	0.26	0.25	0.23	0.2	0.18
450	18	0	0.38	0.37	0.34	0.31	0.29	0.26	0.24	0.22	0.2	0.18
500	20	0	0.38	0.37	0.35	0.32	0.29	0.26	0.24	0.23	0.2	0.18
600	24	0	0.38	0.38	0.35	0.32	0.29	0.26	0.24	0.22	0.2	0.18

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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