Cast iron

Control valves

Self-acting controls

Page 7 of 12

Valve model

BMF2

BMF3

BMF4

BMF6

KA31 screwed

and KA33

flanged

KB31

*

screwed

and KB33

*

flanged balanced

by phosphor

bronze bellows

Size and pipe connections

Screwed

Flanged

BSP / NPT

PN16

1⁄2"

1"

11⁄4"

11⁄2"

2"

1"

11⁄4"

11⁄2"

2"

DN15

DN15

DN15

DN15

DN25

DN32

DN40

DN50

DN25

DN32

DN40

DN50

Body design

rating

PN16

PN16

PN16

PN16

PN16

PN16

PN16

PN16

PN16

PN16

PN16

PN16

PN16

Balanced

Kvs

0.38

0.64

1.03

1.65

2.90

9.80

16.48

23.70

34.00

9.80

16.48

23.70

34.00

16.48

Maximum

P (bar)

16.0

16.0

16.0

16.0

4.5

3.0

2.0

1.5

10.3

9.0

8.2

6.9

13.0

Stroke

mm

2.2

3.2

3.2

3.2

5.6

8.0

9.0

9.5

5.6

8.0

9.0

9.5

9.0

Control system options

3⁄4"

DN15

DN20

PN16

PN16

4.64

13.0

10.3

3.2

4.0

KC31

Balanced by

stainless steel

bellows

DN40

DN50

PN16

34.00

13.0

9.5

Cast carbon steel

4.5.8

BM2

BM4

BM6

KA43

KB43*

Balanced by

phosphor

bronze bellows

Flanged

PN25

PN40 ANSI 300

DN15

DN15

DN15

DN15

DN15

DN20

DN25

DN32

DN50

DN25

DN32

DN40

DN50

DN15

DN15

DN15

DN15

DN15

DN20

DN25

DN50

DN25

DN32

DN40

DN50

PN25

PN40

PN40

PN40

PN40

PN40

PN40

PN40

PN40

PN40

PN40

PN40

PN40

0.38

2.90

9.80

16.48

34.00

9.80

16.48

23.70

34.00

17.2

17.2

17.2

17.2

17.0

10.0

4.5

1.5

10.0

9.0

8.2

6.9

2.2

3.2

3.2

3.2

4.0

5.6

8.0

9.5

5.6

8.0

9.0

9.5

BM3

0.64

3.2

1.03

1.65

4.64

DN40

DN32

DN40

PN40

23.70

3.0

2.0

9.0

KC43

Balanced by

stainless steel

bellows

DN32

DN40

DN50

DN32

DN40

DN50

PN40

PN40

PN40

16.48

16.48

34.00

16.0

16.0

13.8

8.0

9.0

9.5

Stainless steel

KA61

KA63

PN40

PN40

PN40

PN40

2.90

4.64

9.80

2.90

17.0

10.0

4.5

17.0

3.2

4.0

5.6

3.2

Screwed

Flanged

BSP/NPT PN40/ANSI 300

1⁄2"

3⁄4"

1"

DN15

DN20

DN25

PN40

PN40

PN40

PN40

PN40

4.64

9.80

16.48

34.00

16.48

10.0

4.0

4.5

3.0

1.5

16.0

5.6

8.0

9.5

8.0

DN32

DN40

DN50

PN40

23.70

2.0

9.0

KC63

balanced by

stainless steel

bellows

DN32

DN40

PN40

23.70

16.0

9.0

DN50

PN40

34.00

13.8

9.5

2-Port Self-acting Temperature Control Valve Selection

for Heating and Cooling Applications

TI-S21-07 CH Issue 1

Page 7 of 12

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