Cv-values: Q-RA

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Series	Code	Description
RA	Q-RA	NELES RA SERIES V-PORT SEGMENT VALVE, STANDARD METAL SEATED, 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	1.07	2.51	4.52	6.9	10.2	14.2	19	26	35.6	47
65	2.5	0	2.19	5.13	9.26	14.2	20.9	29	39	53.3	73.1	96
80	3	0	3.59	8.4	15.2	23.2	34.3	47.6	64	87.5	120	160
100	4	0	5.68	13.3	24.1	36.8	54.3	75.3	101	139	190	250
150	6	0	12.3	28.9	52.2	79.6	118	163	219	300	412	540
200	8	0	20	47	84.8	130	191	265	357	488	669	880
250	10	0	34.3	80.4	145	222	328	455	611	836	1146	1510

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	0.94	0.91	0.87	0.82
65	2.5	0	0.95	0.95	0.95	0.95	0.95	0.94	0.91	0.88	0.82	0.71
80	3	0	0.95	0.95	0.95	0.95	0.95	0.93	0.9	0.86	0.79	0.62
100	4	0	0.95	0.95	0.95	0.95	0.95	0.94	0.91	0.88	0.82	0.7
150	6	0	0.95	0.95	0.95	0.95	0.95	0.94	0.92	0.88	0.83	0.73
200	8	0	0.95	0.95	0.95	0.95	0.95	0.95	0.93	0.89	0.85	0.77
250	10	0	0.95	0.95	0.95	0.95	0.95	0.94	0.92	0.88	0.83	0.72

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	0.82	0.8	0.76	0.69	0.62	0.55
65	2.5	0	0.82	0.83	0.83	0.82	0.8	0.76	0.7	0.63	0.55	0.45
80	3	0	0.82	0.83	0.83	0.82	0.79	0.74	0.67	0.6	0.51	0.39
100	4	0	0.82	0.83	0.83	0.82	0.8	0.76	0.7	0.63	0.55	0.45
150	6	0	0.82	0.83	0.83	0.82	0.8	0.77	0.71	0.64	0.56	0.46
200	8	0	0.82	0.83	0.83	0.83	0.81	0.78	0.73	0.66	0.58	0.5
250	10	0	0.82	0.83	0.83	0.82	0.8	0.76	0.71	0.64	0.56	0.46

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	0.48	0.47	0.46	0.43	0.39	0.36
65	2.5	0	0.49	0.49	0.49	0.48	0.47	0.46	0.43	0.4	0.36	0.31
80	3	0	0.49	0.49	0.49	0.48	0.47	0.45	0.42	0.38	0.34	0.27
100	4	0	0.49	0.49	0.49	0.48	0.47	0.46	0.43	0.4	0.36	0.31
150	6	0	0.49	0.49	0.49	0.48	0.47	0.46	0.44	0.4	0.36	0.31
200	8	0	0.49	0.49	0.49	0.49	0.48	0.47	0.45	0.41	0.37	0.33
250	10	0	0.49	0.49	0.49	0.48	0.47	0.46	0.44	0.4	0.36	0.31

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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