caliber

inch

inner diameter

Kvvalue

differential pressure Max

Air pressure 

Cylinder bore

flow direction

DN10

3/8’

10

3.7

0-16bar

4-7bar

50

steam, gas

Seat flow direction

DN15

1/2’

15

4.2

50

DN20

3/4’

20

8.0

50

DN25

1’

25

19.0

63

DN32

1-1/4’

32

27.5

63

DN40

1-1/2’

40

42.0

63

liquid, gas

waterproof hammer

Flow direction under the valve seat

DN50

2’

50

55.0

80

DN65

2-1/2’

65

90

100

DN80

3

80

100

DN100

4

100

125

Nominal diameter
DN

L

T

f

D

C

B

N-Φd

A

H

E

pneumatic head

15

120

14

2

95

65

40

4-Φ14

180

137

64

Φ50

20

130

14

2

105

75

50

4-Φ14

185

145

64

Φ50

25

140

14

2

115

85

60

4-Φ14

220

185

80

Φ63

32

150

16

2

135

100

70

4-Φ18

240

210

80

Φ63

40

180

16

2

145

110

80

4-Φ18

245

260

80

Φ63

50

195

16

2

160

125

92

4-Φ18

265

280

100

Φ80

65

230

18

2

185

145

115

4-Φ18

280

300

100

Φ80

80

230

18

2

195

160

130

8-Φ18

320

330

126

Φ100

100

280

18

2

215

180

150

8-Φ18

360

350

156

Φ125