Type 2961

13 | 17

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Nominal

diameter

(pipe)

Seat

size

Hand-

wheel

dia-

meter

Ø

Operating pressure

max. CF A

(Seat leakage class)

Theo-

retical

range-

ability

K

V value at stroke [m

3

/h]

K

VS

value

Seat seal

Stain-

less

steel

PTFE PEEK

DN

NPS

[mm]

[bar(g)]

5 %

10 % 20 % 30 % 40 % 50 % 60 % 70 % 80 % 90 % 100 % [m3/h]

25

1

3

45 (S)

25 (II) –

–

10:1

–

0.005 0.009 0.013 0.019 0.026 0.034 0.044 0.060 0.077 0.098

0.1

3

45 (S)

25 (II) –

–

20:1

–

0.009 0.015 0.023 0.033 0.046 0.063 0.085 0.11

0.16

0.22

0.2

4

45 (S)

25 (II) –

–

30:1

–

0.023 0.033 0.049 0.070 0.097 0.14

0.18

0.26

0.35

0.49

0.5

6

45 (S)

25 (II) 25 (VI) 25 (VI) 50:1

0.005 0.007 0.011 0.045 0.085 0.16

0.26

0.41

0.65

1.1

1.25

1.25

8

45 (S)

25 (II) 25 (VI) 25 (VI)

0.070 0.080 0.11

0.13

0.19

0.27

0.43

0.63

0.95

1.6

1.8

1.8

10

45 (S)

25 (II) 25 (VI) 25 (VI)

0.10

0.12

0.15

0.19

0.30

0.46

0.67

1.0

1.5

2.1

2.8

2.8

15

45 (S)

25 (II) 25 (VI) 25 (VI)

0.13

0.17

0.21

0.33

0.48

0.72

1.1

1.5

2.4

3.5

4.6

4.6

20

45 (S)

25 (II) 25 (VI) 25 (VI)

0.19

0.24

0.30

0.44

0.64

0.98

1.4

2.1

3.2

4.5

6.1

6.1

25

45 (S)

-

25 (VI) 25 (VI)

0.33

0.38

0.62

0.94

1.4

2.0

3.0

4.4

6.1

8.1

10.4

10.4

32

1 ¼2.) 20

110 (M) 25 (II) 25 (VI) 25 (VI)

0.22

0.25

0.35

0.50

0.70

1.1

1.6

2.5

3.8

5.8

8.0

8.0

25

110 (M) 25 (II) 25 (VI) 25 (VI)

0.40

0.47

0.73

1.1

1.6

2.5

3.7

5.4

7.5

10.3

13.0

13.0

32

110 (M) 25 (II) 25 (VI) 25 (VI)

0.48

0.60

0.85

1.3

2.1

3.1

4.5

6.8

10.2

14.0

17.8

17.8

40

1 ½ 2.) 25

110 (M) 25 (II) 25 (VI) 25 (VI)

0.40

0.50

0.75

1.1

1.7

2.6

3.8

5.6

8.0

10.7

13.6

13.6

32

110 (M) 25 (II) 25 (VI) 25 (VI)

0.48

0.60

0.85

1.3

2.1

3.2

4.6

6.9

11.0

15.0

20.0

20.0

40

110 (M) 25 (II) 25 (VI) 25 (VI)

0.60

0.70

1.1

1.7

2.7

4.0

6.0

9.2

13.8

18.2

23.8

23.8

50

2 2.)

20

110 (M) 25

(20)

(II) 1.)

–

–

–

0.14

0.25

0.38

0.57

0.85

1.3

1.9

2.8

4.1

6.0

6.3

32

110 (M) 25

(20)

(II) 1.)

–

–

0.24

0.31

0.51

0.76

1.1

1.7

2.5

3.6

5.3

7.9

11.8

12.0

32

110 (M) 25

(20)

(II) 1.)

25

(20)

(VI) 1.)

25

(20)

(VI) 1.)

0.48

0.60

0.90

1.3

2.1

3.2

4.6

6.9

11.6

16.0

21.0

21.0

40

110 (M) 25

(20)

(II) 1.)

25

(20)

(VI) 1.)

25

(20)

(VI) 1.)

0.60

0.70

1.0

1.7

2.6

4.0

5.9

9.2

14.0

18.9

24.5

24.5

50

110 (M) 25

(20)

(II) 1.)

25

(20)

(VI) 1.)

20

(VI) 1.)

0.90

1.1

1.9

2.9

4.5

6.8

10.5

15.5

22.0

29.5

37.0

37.0

65

2 ½ 2.) 40

160 (L)

25

(15)

(II) 1.)

25

(15)

(VI) 1.)

25

(15)

(IV) 1.)

0.65

0.75

1.1

1.8

2.8

4.3

6.5

10.4

16.0

22.0

29.0

29.0

50

160 (L)

25

(15)

(II) 1.)

25

(15)

(VI) 1.)

20

(VI) 1.)

1.0

1.2

2.0

3.1

4.8

6.7

9.7

16.0

24.0

35.0

45.0

45.0

65

160 (L)

24

(15)

(II) 1.)

24

(15)

(VI) 1.)

14 (VI)

1.6

2.0

3.0

5.0

8.0

13.5

22.0

33.0

45.0

56

65

65

80

3 2.)

50

160 (L)

25

(12.5)

(II) 1.)

25

(12.5)

(VI) 1.)

20

(VI) 1.)

1.0

1.2

2.0

3.4

5.3

8.3

13.0

19.0

26.0

35.0

45.0

45.0

65

160 (L)

24

(12.5)

(II) 1.)

24

(12.5)

(VI) 1.)

14

(12.5*)

(VI)

1.6

2.0

2.9

5.0

8.2

13.0

22.0

35.0

48.0

61

73

73

80

160 (L)

16

(12.5)

(II) 1.)

16

(12.5)

(VI) 1.)

10 (VI)

2.5

3.4

6.3

10.7

16.0

27.0

42.5

58

73

87

100

100

100 4

65

160 (L)

24

(10)

(II) 1.)

24

(10)

(VI) 1.)

14

(10)

(VI) 1.)

1.4

1.8

2.8

5.0

8.8

15.0

25.0

37.0

50

64

77

77

80

160 (L)

16

(10)

(II) 1.)

16

(10)

(VI) 1.)

10 (VI)

2.2

3.1

5.9

10.3

17.5

30.0

48.0

66

82

97

110

110

100

160 (L)

10 (II) 10 (VI) 6 (VI)

3.8

5.2

9.5

15.0

26.0

46.5

68

90

111

128

140

140

1.) According to the Pressure Equipment Directive 97/23/EC for compressible fluids of Group 1 (hazardous gases and vapours according to Article 3 No. 1.3 letter a first dash)

2.) Deviation for port connections according to ASME BPE: the next largest Nominal diameter (port connection) is used, e.g. NPS 1 instead of NPS ¾.