Pipeline ancillaries

Bellows sealed stop valves

Size

DN15

DN20

DN25

DN32

DN40

DN50

DN65

DN80 DN100 DN125 DN150 DN200 DN250

(1⁄2")

(3⁄4")

(1")

(11⁄4")

(11⁄2")

(2")

(21⁄2")

(3")

(4")

(5")

(6")

(8")

(10")

Kv

4

7

12

19

30

47

77

120

193

288

410

725

1145

Size

BSAT valve

DN15 DN20 DN25 DN32 DN40

DN50

DN65

DN80

DN100 DN125 DN150 DN200 DN250

Hand-

wheel

rotations

Kv values for given handwheel rotations tested to EN 60534-2-3

Water at 20°C

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.5

1.2

1.2

1.4

2.2

4.4

4.1

5.6

10.4

12.0

21

28

66

110

1

1.7

1.7

2.0

3.7

5.0

5.0

7.0

11.5

14.3

23

30

81

140

1.5

2.7

2.9

2.9

5.0

5.5

6.0

9.2

13.6

24.5

26

33

97

150

2

3.6

4.0

4.6

7.9

7.6

7.2

11.6

16.3

34.1

42

46

111

165

2.5

4.4

5.3

6.4

10.6

11.0

9.7

12.4

18.5

59.6

67

65

149

190

3

5.4

6.6

8.5

13.8

14.7

14.1

13.0

21.1

86.2

94

90

199

225

4

10.6

17.0

22.6

24.4

25.2

24.5

123.0

140

152

302

330

4.5

11.2

18.3

24.4

29.4

32.5

29.0

139.0

181

177

355

451

5

11.9

19.6

27.2

37.0

43.6

39.1

164.1

185

216

403

460

6

28.9

46.2

60.2

61.0

179.0

220

264

455

600

6.5

29.1

47.0

63.0

69.0

186.0

230

288

480

641

6.7

29.3

47.2

64.3

73.0

235

293

487

656

7

65.9

78.0

241

305

495

678

8

71.2

90.0

259

337

507

738

8.5

74.6

92.0

348

522

760

9.5

99.0

369

793

10

101.6

805

10.7

827

7.1.7

DN15 -DN80

2.0bar

DN100 - DN125

1.5 bar

DN150

1.0 bar

DN200 - DN250

0.8 bar

Seat leakage

Disc to seat shut-off conforms to EN 12266-1 Rate A leakage and ISO 5208 Rate A. Disc to seat shut-off for BSA3 (ANSI) conforms to

API 598 no leakage.

Kv values - all options

For conversion:

Cv (UK) = Kv x 0.963

Cv (US) = Kv x 1.156

Note: For Kv values and flow characteristic values of the BSA1T, BSA2T and BSA3T see the next section 'BSAT flow data'.

BSAT flow data

To convert Kv to volume flowrate in m3/h:-

= Kv x √ ∆P

Where:

= Volume flow in cubic m/h

∆P = Pressure drop in bar

Note: The maximum recommended differential pressure in

throttling function:

If the BSAT is used above these quoted figures, increased noise

and vibration may be experienced.

The graphs below show handwheel rotation and flow characteristic with water at 20°C:

BSAT - DN15

BSAT - DN20

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Handwheel rotations

Handwheel rotations

TI-P137-18 ST Issue 6

BSAT and BSA Bellows Sealed Stop Valves

Page 4 of 10

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