Nominal Diameter

Liquid

Gas

(mm)

(in.)

Flow (m³/h)

Frequency(Hz) 

Flow (m³/h)

Frequency(Hz) 

15

0.5

0.5 to  5

46 to 464

3.5 to 25

325 to 2320

20

0.75

1 to 10

40 to 396

5.5 to 50

218 to 1982

25

1

1.6 to 16

32 to 325

8.5 to 70

172 to 1420

40

1.5

2.5 to 25

13 to 130

22 to 220

115 to 1147

50

2

3.5 to 35

13 to 130

22 to 220

115 to 1147

65

2.5

6.5 to 68

9 to 93

36 to 320

96 to 854

80

3

10 to 100

8 to 82

50 to 480

61 to 583

100

4

15 to 150

6 to 65

70 to 640

45 to 417

125

5

27 to 275

5 to 47

200 to 1700

33 to 290

150

6

40 to 400

4 to 40

280 to 2240

27 to 221

200

8

80 to 800

3 to 33

580 to 4960

24 to 207

250

10

120 to 1200

3 to 26

970 to 8000

20 to 171

300

12

180 to 1800

2 to 22

1380 to 11000

17 to 136