Cv-values: BWGD

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Series	Code	Description
BWH	BWGD_CS	NELES BWH-SERIES, METAL SEATED DOUBLE ECCENTRIC HIGH TEMP VALVE, CARBON STEEL, BODY RATING ASME 900 TRIM RATING ASME 300 (BWH_G/D)

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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	54	81	111	158	228	323	438	555	621	627
200	8	0	92	137	192	279	413	598	833	1091	1282	1313
250	10	0	145	217	312	470	719	1071	1541	2100	2596	2697
300	12	0	155	230	349	558	894	1387	2079	2970	3882	4093
350	14	0	215	321	483	779	1261	1958	2927	4176	5437	5716
400	16	0	281	419	625	1020	1668	2591	3863	5504	7138	7482
450	18	0	355	529	785	1293	2137	3323	4942	7032	9083	9493
500	20	0	374	557	845	1440	2415	3773	5603	7967	10414	10920
600	24	0	473	705	1135	2091	3619	5706	8451	11997	16072	16963

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	0.85	0.85	0.84	0.82	0.8	0.77	0.76	0.75	0.75
200	8	0	0.86	0.86	0.85	0.84	0.82	0.8	0.77	0.75	0.73	0.73
250	10	0	0.86	0.85	0.85	0.84	0.82	0.78	0.76	0.72	0.69	0.69
300	12	0	0.86	0.86	0.85	0.84	0.82	0.79	0.76	0.73	0.69	0.68
350	14	0	0.86	0.86	0.85	0.84	0.82	0.79	0.76	0.72	0.68	0.67
400	16	0	0.86	0.86	0.85	0.84	0.82	0.79	0.76	0.72	0.68	0.67
450	18	0	0.86	0.86	0.85	0.84	0.82	0.79	0.76	0.72	0.68	0.67
500	20	0	0.86	0.86	0.86	0.85	0.82	0.8	0.76	0.73	0.69	0.68
600	24	0	0.86	0.86	0.86	0.84	0.82	0.79	0.76	0.72	0.68	0.67

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	0.51	0.49	0.45	0.44	0.43
200	8	0	0.53	0.53	0.53	0.53	0.53	0.51	0.48	0.44	0.41	0.41
250	10	0	0.53	0.53	0.53	0.53	0.52	0.5	0.45	0.41	0.37	0.37
300	12	0	0.53	0.53	0.53	0.53	0.53	0.51	0.46	0.41	0.37	0.36
350	14	0	0.53	0.53	0.53	0.53	0.53	0.51	0.46	0.4	0.36	0.35
400	16	0	0.53	0.53	0.53	0.53	0.53	0.51	0.46	0.4	0.36	0.35
450	18	0	0.53	0.53	0.53	0.53	0.53	0.51	0.45	0.4	0.36	0.35
500	20	0	0.53	0.53	0.53	0.53	0.53	0.51	0.47	0.42	0.37	0.36
600	24	0	0.53	0.53	0.53	0.53	0.53	0.51	0.46	0.41	0.36	0.35

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	0.37	0.36	0.33	0.31	0.29	0.27	0.26	0.24	0.24	0.24
200	8	0	0.38	0.36	0.34	0.31	0.29	0.27	0.25	0.24	0.23	0.23
250	10	0	0.38	0.36	0.33	0.31	0.29	0.26	0.24	0.23	0.21	0.21
300	12	0	0.38	0.37	0.35	0.32	0.29	0.27	0.25	0.23	0.21	0.2
350	14	0	0.38	0.37	0.35	0.32	0.29	0.27	0.25	0.23	0.21	0.2
400	16	0	0.38	0.37	0.35	0.32	0.29	0.27	0.25	0.23	0.2	0.2
450	18	0	0.38	0.37	0.35	0.32	0.29	0.27	0.24	0.22	0.2	0.2
500	20	0	0.38	0.38	0.36	0.33	0.29	0.27	0.25	0.23	0.21	0.21
600	24	0	0.38	0.38	0.36	0.33	0.29	0.27	0.25	0.23	0.2	0.2

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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