Cv-values: QFI-R

Series	Code	Description
FC	QFI-R	NELES FINETROL ECCENTRIC ROTARY PLUG CONTROL VALVE, REDUCE CV SEAT WITH QTRIM

Series

Code

Description

QFI-R

NELES FINETROL ECCENTRIC ROTARY PLUG CONTROL VALVE, REDUCE CV SEAT WITH QTRIM

Links:

The Finetrol rotary plug control valve fitted with aerodynamic noise and liquid cavitation attenuating Q-Trim in flow-to-open position. Suitable for controlling liquids, gases, and steam in a very wide range of services. Temperature range is -200 ... +425 °C. Flanged ANSI 150...600 sizes DN 50...250 (2"....10"), PN10...PN40 sizes DN25...250 (1"-10").

C_v-values

SIZE	Relative opening h
RN = Reduction Number
50	2	0	2.7	5.5	7.94	10	12.1	14	16	18	20	22
80	3	0	7.8	15	20.2	25.5	30.8	35.6	40.8	45.7	51	56
100	4	0	13.4	25	34.3	43.2	52.3	60.3	69.3	77.5	86.5	95
150	6	0	28	55	75.8	95.6	116	133	153	171	191	210
200	8	0	49.3	97.7	126	159	193	226	259	286	319	350
250	10	0	78	153	199	250	303	355	406	449	501	550

SIZE

Relative opening h

INCH

10 %

20 %

30 %

40 %

50 %

60 %

70 %

80 %

90 %

100 %

RN = Reduction Number

2.7

5.5

7.94

12.1

7.8

20.2

25.5

30.8

35.6

40.8

45.7

100

13.4

34.3

43.2

52.3

60.3

69.3

77.5

86.5

150

75.8

95.6

116

133

153

171

191

210

200

49.3

97.7

126

159

193

226

259

286

319

350

250

153

199

250

303

355

406

449

501

550

C_v/d²-values

SIZE	Relative opening h
RN = Reduction Number
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

SIZE

Relative opening h

INCH

10 %

20 %

30 %

40 %

50 %

60 %

70 %

80 %

90 %

100 %

RN = Reduction Number

0.089

0.121

0.124

0.132

0.139

0.167

0.183

0.196

0.203

0.204

0.089

0.121

0.124

0.132

0.139

0.167

0.183

0.196

0.203

0.204

100

0.089

0.121

0.124

0.132

0.139

0.167

0.183

0.196

0.203

0.204

150

0.089

0.121

0.124

0.132

0.139

0.167

0.183

0.196

0.203

0.204

200

0.089

0.121

0.124

0.132

0.139

0.167

0.183

0.196

0.203

0.204

250

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
RN = Reduction Number
50	2	0	0.93	0.93	0.93	0.93	0.93	0.93	0.93	0.93	0.93	0.93
80	3	0	0.93	0.93	0.93	0.93	0.93	0.93	0.93	0.93	0.93	0.93
100	4	0	0.93	0.93	0.93	0.93	0.93	0.93	0.93	0.93	0.93	0.93
150	6	0	0.93	0.93	0.93	0.93	0.93	0.93	0.93	0.93	0.93	0.93
200	8	0	0.93	0.93	0.93	0.93	0.93	0.93	0.93	0.93	0.93	0.93
250	10	0	0.93	0.93	0.93	0.93	0.93	0.93	0.93	0.93	0.93	0.93

SIZE

Relative opening h

INCH

10 %

20 %

30 %

40 %

50 %

60 %

70 %

80 %

90 %

100 %

RN = Reduction Number

0.93

100

0.93

150

0.93

200

0.93

250

0.93

X_T-values

SIZE	Relative opening h
RN = Reduction Number
50	2	0	0.76	0.76	0.76	0.75	0.75	0.74	0.73	0.73	0.72	0.71
80	3	0	0.76	0.76	0.75	0.75	0.74	0.74	0.73	0.72	0.71	0.7
100	4	0	0.76	0.76	0.76	0.75	0.74	0.74	0.73	0.72	0.72	0.7
150	6	0	0.76	0.76	0.76	0.75	0.74	0.74	0.73	0.73	0.72	0.71
200	8	0	0.76	0.76	0.76	0.75	0.75	0.74	0.73	0.73	0.72	0.71
250	10	0	0.76	0.76	0.76	0.75	0.75	0.74	0.73	0.73	0.72	0.71

SIZE

Relative opening h

INCH

10 %

20 %

30 %

40 %

50 %

60 %

70 %

80 %

90 %

100 %

RN = Reduction Number

0.76

0.75

0.74

0.73

0.72

0.71

0.76

0.75

0.74

0.73

0.72

0.71

0.7

100

0.76

0.75

0.74

0.73

0.72

0.7

150

0.76

0.75

0.74

0.73

0.72

0.71

200

0.76

0.75

0.74

0.73

0.72

0.71

250

0.76

0.75

0.74

0.73

0.72

0.71

z-values

SIZE	Relative opening h
RN = Reduction Number
50	2	0	0.5	0.5	0.5	0.5	0.5	0.5	0.49	0.49	0.49	0.49
80	3	0	0.5	0.5	0.5	0.5	0.5	0.5	0.49	0.49	0.49	0.49
100	4	0	0.5	0.5	0.5	0.5	0.5	0.5	0.49	0.49	0.49	0.49
150	6	0	0.5	0.5	0.5	0.5	0.5	0.5	0.49	0.49	0.49	0.49
200	8	0	0.5	0.5	0.5	0.5	0.5	0.5	0.49	0.49	0.49	0.49
250	10	0	0.5	0.5	0.5	0.5	0.5	0.5	0.49	0.49	0.49	0.49

SIZE

Relative opening h

INCH

10 %

20 %

30 %

40 %

50 %

60 %

70 %

80 %

90 %

100 %

RN = Reduction Number

0.5

0.49

0.5

0.49

100

0.5

0.49

150

0.5

0.49

200

0.5

0.49

250

0.5

0.49

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