Cv-values: FIFTO

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Series	Code	Description
FC	FIFTO_SOFT	NELES FINETROL ECCENTRIC ROTARY PLUG CONTROL VALVE, SOFT SEATED, 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	0.9	1.7	2.6	3.3	4.3	5.3	6.9	8.7	10.7	12.5
40	1.5	0	2.1	4.6	6.5	8.8	12	15	19	22	25	27
50	2	0	3.7	7.8	12	16	22	27	34	39	43	45
80	3	0	10	20	26	32	41	52	67	81	95	107
100	4	0	17	35	48	58	74	94	121	146	171	199
150	6	0	35	80	119	140	174	205	250	310	353	406
200	8	0	63	128	186	254	327	421	509	607	694	734
250	10	0	96	193	281	385	496	638	771	919	1052	1113

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	0.88	0.87	0.85	0.84	0.82	0.81	0.79	0.77
40	1.5	0	0.91	0.89	0.88	0.86	0.84	0.82	0.81	0.8	0.78	0.78
50	2	0	0.91	0.9	0.88	0.86	0.83	0.82	0.81	0.8	0.79	0.78
80	3	0	0.91	0.89	0.88	0.87	0.85	0.83	0.82	0.8	0.79	0.78
100	4	0	0.91	0.89	0.88	0.86	0.85	0.83	0.82	0.8	0.79	0.78
150	6	0	0.91	0.89	0.87	0.86	0.85	0.83	0.82	0.81	0.8	0.78
200	8	0	0.91	0.89	0.88	0.86	0.84	0.83	0.81	0.8	0.79	0.78
250	10	0	0.91	0.9	0.88	0.86	0.84	0.83	0.82	0.8	0.79	0.78

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	0.61	0.6	0.57	0.53	0.48
40	1.5	0	0.62	0.62	0.62	0.62	0.61	0.6	0.58	0.55	0.53	0.5
50	2	0	0.62	0.62	0.62	0.62	0.61	0.6	0.58	0.55	0.53	0.52
80	3	0	0.62	0.62	0.62	0.62	0.62	0.61	0.6	0.57	0.54	0.5
100	4	0	0.62	0.62	0.62	0.62	0.62	0.61	0.6	0.57	0.54	0.49
150	6	0	0.62	0.62	0.62	0.62	0.62	0.61	0.6	0.58	0.55	0.52
200	8	0	0.62	0.62	0.62	0.62	0.62	0.61	0.59	0.56	0.53	0.52
250	10	0	0.62	0.62	0.62	0.62	0.62	0.61	0.59	0.56	0.54	0.53

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	0.44	0.4	0.38	0.36	0.35	0.34	0.33	0.3
40	1.5	0	0.5	0.47	0.42	0.38	0.36	0.35	0.34	0.34	0.32	0.31
50	2	0	0.5	0.47	0.42	0.38	0.36	0.35	0.34	0.34	0.33	0.32
80	3	0	0.5	0.46	0.42	0.39	0.37	0.36	0.35	0.34	0.33	0.31
100	4	0	0.5	0.46	0.42	0.39	0.37	0.36	0.35	0.34	0.33	0.31
150	6	0	0.5	0.46	0.4	0.39	0.37	0.36	0.35	0.34	0.34	0.32
200	8	0	0.5	0.47	0.42	0.38	0.37	0.36	0.35	0.34	0.33	0.32
250	10	0	0.5	0.47	0.43	0.39	0.37	0.36	0.35	0.34	0.33	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