3321 datasheet(17/29 Pages) BURKERT

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Type 3361

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Overview of flow characteristics with flow below seat

Note:

• K

V value [m

/h]: Measured with water acc. to DIN EN 60534 - 2 - 4

• Operating limits, see “5.2. Operating limits” on page 19

Nominal

diameter

(Pipe)

Seat

size

Actuator

force 1.)

Operating pressure

(Seat leakage class)

Charac

teristics

(theoretical

rangeability)

V value at stroke

value

Valve seat seal

Stain

less

steel

PTFE

PEEK

5 % 10 %

30 %

50 %

70 %

90 %

NPS

[N]

[bar(g)]

[m3/h]

⅜2.)

1300

25 (IV)

–

Linear (10:1)

–

0.003 0.015 0.037 0.065 0.090 0.10

Linear (25:1)

–

0.015 0.1

0.19

0.27

0.33

0.35

Linear (10:1)

–

0.050 0.16

0.27

0.36

0.44

0.50

Linear (25:1)

–

0.12

0.48

0.76

0.98

1.1

1.2

25 (VI)

Equal

percentage

(50:1)

–

0.007 0.045 0.16

0.41

1.1

1.25

–

0.070 0.12

0.26

0.61

1.5

2.0

–

0.11

0.19

0.48

1.0

2.3

2.7

½2.)

25 (IV)

–

Linear (10:1)

–

0.003 0.015 0.037 0.065 0.09

0.10

Linear (25:1)

–

0.015 0.1

0.19

0.27

0.33

0.35

Linear (10:1)

–

0.050 0.16

0.27

0.36

0.44

0.50

Linear (25:1)

–

0.12

0.48

0.76

0.98

1.1

1.2

25 (VI)

Equal

percentage

(50:1)

–

0.007 0.045 0.16

0.41

1.1

1.25

–

0.080 0.13

0.27

0.63

1.6

2.1

–

0.11

0.19

0.49

1.1

2.5

3.1

0.14 0.17

0.35

0.80

1.8

3.7

4.3

¾2.)

25 (IV)

–

25 (VI)

–

0.12

0.20

0.52

1.2

2.6

3.2

0.14 0.17

0.35

0.80

1.8

4.0

5.2

25 (IV)

25 (VI)

0.20 0.25

0.45

1.1

2.4

5.2

7.1

12.)

25 (IV)

–

25 (VI)

0.14 0.17

0.35

0.80

1.8

4.1

5.3

25 (IV)

25 (VI)

0.20 0.25

0.47

1.1

2.5

5.4

7.2

20 (VI)

0.35 0.38

2.2

5.1

9.4

1¼2.)

1300

25 (IV)

25 (VI)

0.22 0.25

0.50

1.1

2.5

5.8

20 (VI)

0.40 0.47

1.1

2.5

5.4

10.3

1300

16 (IV)

16 (VI)

10 (VI)

0.48 0.60

1.3

3.1

6.8

14.0

17.8

2500

25 (IV)

25 (VI)

20 (VI)

1½2.)

1300

25 (IV)

25 (VI)

20 (VI)

0.40 0.50

1.1

2.6

5.6

10.7

13.6

1300

16 (IV)

16 (VI)

10 (VI)

0.48 0.60

1.3

3.2

6.9

15.0

2500

25 (IV)

25 (VI)

20 (VI)

1300

10 (III)

10 (VI)

6 (VI)

0.60 0.70

1.7

4.0

9.2

18.2

2500

18 (IV)

18 (VI)

14 (VI)

7700

25 (IV)

25 (VI)

22.)

1300

16 (IV)

16 (VI)

10 (VI)

0.48 0.60

1.3

3.2

6.9

16.0

2500

25 (IV)

25 (VI)

20 (VI)

1300

10 (III)

10 (VI)

6 (VI)

0.60 0.70

1.7

4.0

9.2

18.9

24.5

2500

18 (IV)

18 (VI)

14 (VI)

7700

25 (IV)

25 (VI)

1300

6 (III)

6 (VI)

–

0.90 1.1

2.9

6.8

15.5

2500

10 (III)

10 (VI)

8 (VI)

7700

25 (IV)

25 (VI)

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