Cv-values: FIFTO-R

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Series	Code	Description
FC	FIFTO-R	NELES FINETROL ECCENTRIC ROTARY PLUG CONTROL VALVE, REDUCE CV SEAT, FLOW-TO-OPEN

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IMO

Technical bulletin

The Finetrol eccentric rotary plug control valve in standard flow direction (flow-to-open = flow through the seat ring and past the plug) is a rotary control valve with eccentric, 90 degree rotation, contoured plug. Finetrol is suitable for controlling liquids, gases and steam in a very wide range of services. Temperature range -200 ... +425 °C. One reduction (50 % of full port Cv) per size is available. However, for DN 25 (1") valve, three different reductions are provided. Flanged ANSI 150...600 sizes DN 25...250 (1"...10"), PN10...PN40 sizes DN25...250 (1”-10”).

C_v-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
25	1	0	0.74	1.65	2.13	2.66	3.18	3.72	4.58	5.72	7.01	7.9
40	1.5	0	2.09	4.6	6.18	7.44	9.39	11.4	13.5	14.8	15.2	15.5
50	2	0	3.78	8	10.4	12.5	15.8	19.1	22.6	24.7	25.5	26
80	3	0	9.6	20.3	26.3	31.7	40	48.5	57.4	62.8	64.6	66
100	4	0	17.2	34.6	47.8	57.6	72.7	88.2	104	114	117	120
150	6	0	37.4	75.2	104	125	158	191	226	247	254	260
200	8	0	58	128	175	211	267	323	383	419	431	440
250	10	0	85	188	271	326	412	500	592	647	666	680

C_v/d²-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
25	1	0	0.089	0.121	0.124	0.132	0.139	0.167	0.183	0.196	0.203	0.204
40	1.5	0	0.089	0.121	0.124	0.132	0.139	0.167	0.183	0.196	0.203	0.204
50	2	0	0.089	0.121	0.124	0.132	0.139	0.167	0.183	0.196	0.203	0.204
80	3	0	0.089	0.121	0.124	0.132	0.139	0.167	0.183	0.196	0.203	0.204
100	4	0	0.089	0.121	0.124	0.132	0.139	0.167	0.183	0.196	0.203	0.204
150	6	0	0.089	0.121	0.124	0.132	0.139	0.167	0.183	0.196	0.203	0.204
200	8	0	0.089	0.121	0.124	0.132	0.139	0.167	0.183	0.196	0.203	0.204
250	10	0	0.089	0.121	0.124	0.132	0.139	0.167	0.183	0.196	0.203	0.204

F_L-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
25	1	0	0.91	0.9	0.89	0.88	0.87	0.86	0.85	0.83	0.82	0.81
40	1.5	0	0.91	0.89	0.88	0.87	0.86	0.84	0.83	0.83	0.82	0.82
50	2	0	0.91	0.89	0.88	0.87	0.86	0.85	0.83	0.83	0.83	0.83
80	3	0	0.91	0.89	0.88	0.87	0.85	0.84	0.83	0.82	0.82	0.82
100	4	0	0.91	0.89	0.88	0.87	0.85	0.83	0.83	0.82	0.82	0.82
150	6	0	0.91	0.89	0.88	0.87	0.85	0.84	0.83	0.82	0.82	0.82
200	8	0	0.91	0.89	0.88	0.87	0.86	0.84	0.83	0.83	0.82	0.82
250	10	0	0.91	0.9	0.88	0.87	0.86	0.84	0.83	0.83	0.82	0.82

X_T-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
25	1	0	0.62	0.62	0.62	0.62	0.62	0.62	0.62	0.61	0.6	0.59
40	1.5	0	0.62	0.62	0.62	0.62	0.62	0.62	0.61	0.61	0.6	0.6
50	2	0	0.62	0.62	0.62	0.62	0.62	0.62	0.61	0.61	0.61	0.61
80	3	0	0.62	0.62	0.62	0.62	0.62	0.61	0.61	0.6	0.6	0.6
100	4	0	0.62	0.62	0.62	0.62	0.62	0.61	0.61	0.6	0.6	0.6
150	6	0	0.62	0.62	0.62	0.62	0.62	0.61	0.61	0.6	0.6	0.6
200	8	0	0.62	0.62	0.62	0.62	0.62	0.62	0.61	0.61	0.6	0.6
250	10	0	0.62	0.62	0.62	0.62	0.62	0.62	0.61	0.61	0.6	0.6

z-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
25	1	0	0.5	0.48	0.46	0.44	0.41	0.39	0.37	0.36	0.35	0.35
40	1.5	0	0.5	0.47	0.43	0.4	0.38	0.37	0.36	0.36	0.35	0.35
50	2	0	0.5	0.47	0.44	0.41	0.38	0.37	0.36	0.36	0.36	0.36
80	3	0	0.5	0.46	0.42	0.39	0.37	0.36	0.36	0.35	0.35	0.35
100	4	0	0.5	0.46	0.42	0.39	0.37	0.36	0.36	0.35	0.35	0.35
150	6	0	0.5	0.47	0.42	0.4	0.37	0.36	0.36	0.35	0.35	0.35
200	8	0	0.5	0.47	0.43	0.4	0.38	0.37	0.36	0.36	0.35	0.35
250	10	0	0.5	0.47	0.43	0.4	0.38	0.37	0.36	0.36	0.35	0.35

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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