Cv-values: QM2TRUN

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Series	Code	Description
M2TRUN	QM2TRUN	NELES TRUNNION MOUNTED BALL VALVE SERIES M2, WITH Q-TRIM VARIANT (Q-TRIM)

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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	54	126	207	313	457	650	935	1438	2502	3920
300	12	0	78	181	297	450	656	933	1343	2066	3586	5600
350	14	0	97	225	369	559	814	1159	1667	2565	4425	6860
400	16	0	129	301	494	747	1088	1549	2228	3428	5922	9190
450	18	0	177	580	850.5	1156	1420	1895	2699	4203	6967	11400
500	20	0	225	672.3	926.1	1227	1487	2018	2916	4726	8308	14300
600	24	0	345	1069	1524	2134	2610	3554	5166	8006	13204	22400

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	0.066	0.066	0.1	0.14	0.16	0.17	0.18	0.19	0.205	0.205
300	12	0	0.066	0.066	0.1	0.14	0.16	0.17	0.18	0.19	0.205	0.205
350	14	0	0.066	0.066	0.1	0.14	0.16	0.17	0.18	0.19	0.205	0.205
400	16	0	0.066	0.066	0.1	0.14	0.16	0.17	0.18	0.19	0.205	0.205
450	18	0	0.066	0.066	0.1	0.14	0.16	0.17	0.18	0.19	0.205	0.205
500	20	0	0.066	0.066	0.1	0.14	0.16	0.17	0.18	0.19	0.205	0.205
600	24	0	0.066	0.066	0.1	0.14	0.16	0.17	0.18	0.19	0.205	0.205

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	0.92	0.93	0.93	0.92	0.91	0.88	0.81	0.65	0.49
300	12	0	0.91	0.92	0.93	0.93	0.92	0.91	0.88	0.81	0.65	0.49
350	14	0	0.91	0.92	0.93	0.93	0.93	0.91	0.89	0.83	0.69	0.54
400	16	0	0.91	0.92	0.93	0.93	0.92	0.91	0.89	0.82	0.68	0.53
450	18	0	0.91	0.92	0.93	0.93	0.92	0.91	0.88	0.8	0.65	0.54
500	20	0	0.91	0.92	0.93	0.93	0.92	0.9	0.88	0.8	0.64	0.54
600	24	0	0.91	0.92	0.93	0.93	0.92	0.9	0.87	0.78	0.62	0.49

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	0.83	0.83	0.82	0.8	0.74	0.61	0.43	0.31	0.14
300	12	0	0.82	0.83	0.83	0.82	0.8	0.74	0.62	0.43	0.31	0.14
350	14	0	0.82	0.83	0.83	0.83	0.81	0.76	0.66	0.47	0.33	0.19
400	16	0	0.82	0.83	0.83	0.82	0.8	0.76	0.65	0.46	0.33	0.18
450	18	0	0.82	0.83	0.83	0.82	0.8	0.74	0.61	0.44	0.27	0.2
500	20	0	0.82	0.83	0.83	0.82	0.8	0.73	0.6	0.43	0.26	0.2
600	24	0	0.82	0.83	0.83	0.82	0.79	0.72	0.57	0.4	0.24	0.18

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	0.56	0.55	0.53	0.52	0.49	0.46	0.41	0.35	0.28	0.19
300	12	0	0.56	0.55	0.53	0.52	0.49	0.46	0.42	0.35	0.28	0.19
350	14	0	0.56	0.55	0.54	0.52	0.5	0.47	0.43	0.36	0.29	0.22
400	16	0	0.56	0.55	0.54	0.52	0.49	0.47	0.43	0.36	0.29	0.21
450	18	0	0.56	0.55	0.53	0.51	0.49	0.46	0.41	0.35	0.28	0.22
500	20	0	0.56	0.55	0.53	0.51	0.49	0.46	0.41	0.35	0.27	0.23
600	24	0	0.56	0.55	0.53	0.51	0.48	0.45	0.4	0.34	0.26	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