Cv-values: Q-RA

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Series	Code	Description
RA	Q-RA_1S	NELES RA SERIES V-PORT SEGMENT VALVE, TWO WAY TIGHT 1S SEAT, WITH Q-TRIM VARIANT(Q-TRIM)

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IMO

Technical bulletin

This new generation control valve is based on R1-series and carries the appreciated qualities of this design. Improvements are made in trim and stem packing to reduce friction and eliminate mechanical clearances. The new RA is the valve, which can truly help to improve process performance and reduce variability. Available with small Cv trims. Available in wafer bodies to fit ANSI 150 and 300; DIN 10, 16, 25 and 40; and JIS 10, 16 and 20 pipe flanges

C_v-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
50	2	0	0.68	1.6	2.89	4.4	6.51	9.06	12.1	16.6	22.7	30
65	2.5	0	1.64	3.85	6.95	10.7	15.7	21.8	29.3	40	54.8	72
80	3	0	2.92	6.83	12.4	18.9	27.9	38.7	52	71.1	97.5	130
100	4	0	4.77	11.2	20.2	30.9	45.6	63.3	84.8	117	160	210
150	6	0	11.4	26.8	48.3	73.7	109	151	203	278	381	500
200	8	0	18.9	44.3	80	123	180	250	337	460	631	830
250	10	0	32.7	76.7	138	212	313	434	583	797	1093	1440

C_v/d²-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
50	2	0	0.125	0.125	0.125	0.17	0.22	0.265	0.281	0.299	0.325	0.34
65	2.5	0	0.125	0.125	0.125	0.17	0.22	0.265	0.281	0.299	0.325	0.34
80	3	0	0.125	0.125	0.125	0.17	0.22	0.265	0.281	0.299	0.325	0.34
100	4	0	0.125	0.125	0.125	0.17	0.22	0.265	0.281	0.299	0.325	0.34
150	6	0	0.125	0.125	0.125	0.17	0.22	0.265	0.281	0.299	0.325	0.34
200	8	0	0.125	0.125	0.125	0.17	0.22	0.265	0.281	0.299	0.325	0.34
250	10	0	0.125	0.125	0.125	0.17	0.22	0.265	0.281	0.299	0.325	0.34

F_L-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
50	2	0	0.95	0.95	0.95	0.95	0.95	0.95	0.95	0.95	0.92	0.89
65	2.5	0	0.95	0.95	0.95	0.95	0.95	0.95	0.94	0.91	0.87	0.83
80	3	0	0.95	0.95	0.95	0.95	0.95	0.94	0.92	0.89	0.84	0.75
100	4	0	0.95	0.95	0.95	0.95	0.95	0.95	0.93	0.9	0.85	0.79
150	6	0	0.95	0.95	0.95	0.95	0.95	0.94	0.92	0.89	0.84	0.77
200	8	0	0.95	0.95	0.95	0.95	0.95	0.95	0.93	0.9	0.86	0.8
250	10	0	0.95	0.95	0.95	0.95	0.95	0.94	0.92	0.89	0.84	0.75

X_T-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
50	2	0	0.82	0.82	0.83	0.83	0.83	0.82	0.81	0.78	0.73	0.66
65	2.5	0	0.82	0.82	0.83	0.83	0.82	0.8	0.76	0.7	0.63	0.56
80	3	0	0.82	0.83	0.83	0.83	0.81	0.77	0.72	0.65	0.57	0.48
100	4	0	0.82	0.83	0.83	0.83	0.81	0.79	0.74	0.66	0.59	0.52
150	6	0	0.82	0.83	0.83	0.83	0.81	0.78	0.73	0.65	0.58	0.49
200	8	0	0.82	0.83	0.83	0.83	0.81	0.79	0.74	0.67	0.6	0.52
250	10	0	0.82	0.83	0.83	0.83	0.81	0.77	0.72	0.65	0.57	0.48

z-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
50	2	0	0.49	0.49	0.49	0.49	0.49	0.48	0.48	0.47	0.44	0.41
65	2.5	0	0.49	0.49	0.49	0.49	0.48	0.47	0.46	0.43	0.39	0.36
80	3	0	0.49	0.49	0.49	0.49	0.48	0.46	0.44	0.41	0.37	0.32
100	4	0	0.49	0.49	0.49	0.49	0.48	0.47	0.45	0.42	0.38	0.34
150	6	0	0.49	0.49	0.49	0.49	0.48	0.46	0.44	0.41	0.37	0.33
200	8	0	0.49	0.49	0.49	0.49	0.48	0.47	0.45	0.42	0.38	0.34
250	10	0	0.49	0.49	0.49	0.49	0.48	0.46	0.44	0.41	0.37	0.32

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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