China Oxygen Control Valve

DN (mm)

20

25

32

40

50

Seat diameter dn(mm)

10

12

15

20

10

12

15

20

25

32

32

40

32

40

50

CV

Line

1.8

2.8

4.4

6.9

1.8

2.8

4.4

6.9

11

18

18

28

18

28

44

KV

Equal percentage

1.6

2.5

4

6.3

1.6

2.5

4

6.3

10

16

16

25

16

25

40

Stroke L

16

25

Effective area of diaphragm Ae(cm2)

280

400

DN(mm)

65

80

100

125

150

200

250

Seat diameter dn(mm)

65

65

80

65

80

100

125

125

150

150

200

250

KV

Line

69

69

110

69

110

176

275

275

440

440

690

1100

Equal percentage

63

63

100

63

100

160

250

250

400

400

630

900

Stroke L

40

60

100

Effective area of diaphragm Ae(cm2)

600

100

1600

PN

MPa

1.6, 2.5, 4.0, 6.4(6.3)/2.0, 5.0, 11.0

Bar

16, 25, 40, 64(63)/20, 50, 110

Lb

ANSI：Class150, Class300, Class600

Flow characteristics

Straight line, equal percentage

Adjustable ratio(R)

30, 50

Spring (signal) range Pr(KPa)

20～100, 40～200, 80～240, (20～60, 60～100)

Air pressure Ps(MPa)

0.14/0.25/0.3

Allowable leakage

metal plug：Ⅳ(10-4×Kv) soft plug：Ⅵ

Operating temperature (℃)

Normal temperature type

-20～200, -40～250, -60～250

Cooling type

S

-40～350, -60～350

High temperature type

G

350～550(Select high temperature materials)

Low temperature type

D

D0：-60～-100, D1：-100～-200, D2：-200～-250

Adjust cut type

Q

-40～150 (plug reinforced PTFE) (used in special cases)