Cv-values: M1TRUN

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Series	Code	Description
M1TRUN	M1TRUN	NELES TRUNNION MOUNTED BALL VALVE SERIES M1

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IMO

Technical bulletin

The XMBV is an update of the original MBV. XMBV is a seat supported valve, available with variety of metal seat constructions, body extensions, materials and other special features. Small sizes have one-piece body construction while larger sizes have split body construction. Pressure classes ANSI 150 and 300, DIN PN 10...40 are available as flanged versions. Size range is DN 25...200 (1"...8"). Pressure class ANSI 600, DIN PN 63…100 size range is DN25…DN100 (1"…4"). M1/M2 series valves' sizing calculations can be made with this Nelprof™ code as well. M1/M2 size range is DN 25...300 (1"...12").

C_v-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
250	10	0	62.8	167	314	523	800	1160	2244	3906	7092	15200
300	12	0	89.9	240	449	749	1150	1660	3306	5757	10452	22400
350	14	0	122.4	326.7	611.1	1020	1565	2259	4500	7836	14226	30500
400	16	0	159.8	426.7	798.2	1332	2044	2951	5877	10235	18581	39800
450	18	0	199	532	997	1660	2540	4070	7130	13000	23800	50900
500	20	0	255	682	1280	2130	3260	5220	9130	16700	30400	65200
600	24	0	390	1040	1950	3250	4970	7960	13900	25500	46400	99500

C_v/d²-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
250	10	0	0.528	0.694	0.798	0.872	0.923	0.958	0.979	0.992	0.998	1
300	12	0	0.566	0.712	0.809	0.879	0.927	0.96	0.981	0.993	0.998	1
350	14	0	0.547	0.702	0.803	0.875	0.925	0.959	0.98	0.992	0.998	1
400	16	0	0.554	0.705	0.805	0.876	0.926	0.959	0.98	0.992	0.998	1
450	18	0	0.554	0.705	0.805	0.876	0.926	0.959	0.98	0.992	0.998	1
500	20	0	0.554	0.705	0.805	0.876	0.926	0.959	0.98	0.992	0.998	1
600	24	0	0.554	0.705	0.805	0.876	0.926	0.959	0.98	0.992	0.998	1

F_L-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
250	10	0	0.91	0.91	0.9	0.88	0.85	0.81	0.73	0.64	0.53	0.29
300	12	0	0.91	0.91	0.9	0.88	0.85	0.81	0.73	0.64	0.52	0.28
350	14	0	0.91	0.91	0.9	0.88	0.85	0.81	0.73	0.64	0.52	0.28
400	16	0	0.91	0.91	0.9	0.88	0.85	0.81	0.73	0.64	0.52	0.28
450	18	0	0.91	0.91	0.9	0.88	0.85	0.81	0.73	0.64	0.52	0.28
500	20	0	0.91	0.91	0.9	0.88	0.85	0.81	0.73	0.64	0.52	0.28
600	24	0	0.91	0.91	0.9	0.88	0.85	0.81	0.73	0.64	0.52	0.28

X_T-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
250	10	0	0.82	0.82	0.8	0.75	0.68	0.59	0.4	0.27	0.17	0.06
300	12	0	0.82	0.82	0.8	0.75	0.68	0.6	0.39	0.27	0.17	0.05
350	14	0	0.82	0.82	0.8	0.75	0.68	0.6	0.39	0.27	0.17	0.05
400	16	0	0.82	0.82	0.8	0.75	0.68	0.6	0.39	0.27	0.17	0.05
450	18	0	0.82	0.82	0.8	0.75	0.68	0.6	0.39	0.27	0.17	0.05
500	20	0	0.82	0.82	0.8	0.75	0.68	0.6	0.39	0.27	0.17	0.05
600	24	0	0.82	0.82	0.8	0.75	0.68	0.6	0.39	0.27	0.17	0.05

z-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
250	10	0	0.52	0.51	0.47	0.42	0.37	0.31	0.21	0.14	0.09	0.06
300	12	0	0.52	0.51	0.47	0.42	0.37	0.31	0.21	0.14	0.09	0.06
350	14	0	0.52	0.51	0.47	0.42	0.37	0.31	0.21	0.14	0.09	0.06
400	16	0	0.52	0.51	0.47	0.42	0.37	0.31	0.21	0.14	0.09	0.06
450	18	0	0.52	0.51	0.47	0.42	0.37	0.31	0.21	0.14	0.09	0.06
500	20	0	0.52	0.51	0.47	0.42	0.37	0.31	0.21	0.14	0.09	0.06
600	24	0	0.52	0.51	0.47	0.42	0.37	0.31	0.21	0.14	0.09	0.06

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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