Cv-values: QFI

Series	Code	Description
FC	QFI	NELES FINETROL ECCENTRIC ROTARY PLUG CONTROL VALVE, METAL SEATED WITH QTRIM

Series

Code

Description

QFI

NELES FINETROL ECCENTRIC ROTARY PLUG CONTROL VALVE, METAL SEATED 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	2.91	5.76	8.86	11.8	14.5	17.3	20.3	23.1	26.5	31
80	3	0	7.88	15.6	24	32	39.4	46.9	54.9	62.5	71.7	84
100	4	0	13.5	26.7	41.1	54.9	67.5	80.4	94.1	107	123	144
150	6	0	29.1	57.6	88.6	118	145	173	203	231	265	310
200	8	0	50.8	100	154	206	253	293	353	402	461	540
250	10	0	79	156	240	320	394	455	549	625	717	840

SIZE

Relative opening h

INCH

10 %

20 %

30 %

40 %

50 %

60 %

70 %

80 %

90 %

100 %

RN = Reduction Number

2.91

5.76

8.86

11.8

14.5

17.3

20.3

23.1

26.5

7.88

15.6

39.4

46.9

54.9

62.5

71.7

100

13.5

26.7

41.1

54.9

67.5

80.4

94.1

107

123

144

150

29.1

57.6

88.6

118

145

173

203

231

265

310

200

50.8

100

154

206

253

293

353

402

461

540

250

156

240

320

394

455

549

625

717

840

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	0.75	0.75	0.74	0.73	0.72	0.71	0.69	0.67
80	3	0	0.76	0.76	0.75	0.74	0.73	0.72	0.7	0.69	0.66	0.64
100	4	0	0.76	0.76	0.75	0.74	0.73	0.72	0.7	0.69	0.67	0.64
150	6	0	0.76	0.76	0.75	0.74	0.73	0.72	0.71	0.7	0.68	0.65
200	8	0	0.76	0.76	0.75	0.74	0.74	0.73	0.71	0.7	0.68	0.65
250	10	0	0.76	0.76	0.75	0.74	0.74	0.73	0.71	0.7	0.68	0.65

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

0.69

0.67

0.76

0.75

0.74

0.73

0.72

0.7

0.69

0.66

0.64

100

0.76

0.75

0.74

0.73

0.72

0.7

0.69

0.67

0.64

150

0.76

0.75

0.74

0.73

0.72

0.71

0.7

0.68

0.65

200

0.76

0.75

0.74

0.73

0.71

0.7

0.68

0.65

250

0.76

0.75

0.74

0.73

0.71

0.7

0.68

0.65

z-values

SIZE	Relative opening h
RN = Reduction Number
50	2	0	0.5	0.5	0.5	0.5	0.5	0.49	0.49	0.49	0.48	0.48
80	3	0	0.5	0.5	0.5	0.5	0.49	0.49	0.49	0.48	0.48	0.47
100	4	0	0.5	0.5	0.5	0.5	0.49	0.49	0.49	0.48	0.48	0.47
150	6	0	0.5	0.5	0.5	0.5	0.49	0.49	0.49	0.49	0.48	0.48
200	8	0	0.5	0.5	0.5	0.5	0.5	0.49	0.49	0.49	0.48	0.48
250	10	0	0.5	0.5	0.5	0.5	0.5	0.49	0.49	0.49	0.48	0.48

SIZE

Relative opening h

INCH

10 %

20 %

30 %

40 %

50 %

60 %

70 %

80 %

90 %

100 %

RN = Reduction Number

0.5

0.49

0.48

0.5

0.49

0.48

0.47

100

0.5

0.49

0.48

0.47

150

0.5

0.49

0.48

200

0.5

0.49

0.48

250

0.5

0.49

0.48

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