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Sheet of Cv Value
HomeProducts   → MANUAlL VALVE OPERATOR  → Sheet of Cv Value
Sheet of Cv Value
 
 
 

Cv Value is closely related with disc structure. Two regular type of disc are listed as below for reference when selecting Cv Value.
Fig.1 Split Stem DesignFig.        2 Taper Pin Design & Throughout Stem Pinless Design

Click to enlarge the drawing

      Cv Value for Split Stem Design (Fig.1)

Valve Size

Cv Value when valve in different opening angle

inch

mm

10¡ã

20¡ã

30¡ã

40¡ã

50¡ã

60¡ã

70¡ã

80¡ã

90¡ã

1 1/2

40

0.1

3

6

14

20

38

53

62

73

2

50

0.2

5

9

17

27

53

70

115

145

2 1/2

65

0.4

8

15

26

42

83

105

175

225

3

80

0.6

12

22

38

63

125

160

260

325

4

100

0.8

17

42

73

120

235

305

510

590

5

125

2

45

88

155

250

490

625

1000

1125

6

150

3

89

145

250

410

800

1030

1650

1950

8

200

4

148

250

420

700

1300

1750

2725

3250

10

250

5

232

390

670

1150

2150

2750

4300

5000

12

300

6

342

550

1000

1600

3100

4050

5000

7500


      Cv Value for Taper Pin Design & Throughout Stem Pinless Design (Fig.2)

Valve Size

Cv Value when valve in different opening angle

inch

mm

10¡ã

20¡ã

30¡ã

40¡ã

50¡ã

60¡ã

70¡ã

80¡ã

90¡ã

1 1/2

40

0.06

3

7

14

25

36

51

70

76

2

50

0.1

5

12

24

45

64

90

125

135

2 1/2

65

0.2

8

20

37

65

98

144

204

220

3

80

0.3

12

22

39

70

116

183

275

302

4

100

0.5

17

36

78

139

230

364

546

600

5

125

0.8

29

61

133

237

392

620

930

1022

6

150

2

45

95

205

366

605

958

1437

1579

8

200

3

89

188

408

727

1202

1903

2854

3136

10

250

4

151

320

694

1237

2047

3240

4859

5340

12

300

5

234

495

1072

1911

3162

5005

7507

8250

14

350

6

338

715

1549

2761

4568

7230

10844

11917

16

400

8

464

983

2130

3797

6282

9942

14913

16388

18

450

11

615

1302

2822

5028

8320

13168

19752

21705

20

500

14

791

1674

3628

6465

10698

16931

25396

27908

22

550

17

965

2042

4426

7887

13052

20655

30983

34048

24

600

22

1222

2587

5605

9989

16528

26157

39236

43116

26

650

26

1434

3036

6578

11723

19397

29263

46047

50600

28

700

30

1663

3522

7630

12599

20036

30482

46899

58696

30

750

35

1912

4050

8142

13152

20411

31226

47562

63328

32

800

45

2387

4791

8736

13788

20613

31395

48117

68250

34

850

51

2697

5414

9872

15580

23293

35476

54372

77123

36

900

60

3021

6063

11055

17449

26086

39731

60895

86375

40

1000

84

4183

8395

15307

24159

36166

55084

84425

119750

42

1050

93

4601

9235

16838

26575

39783

60592

92868

131725

48

1200

121

5981

12001

21890

34548

51718

78770

120728

171243