Pipeline ancillaries

HVB3aslltvoaplveaslve

7.4.9

Kv values

Size

Reduced bore

Full bore

For conversion:

1⁄4"

"

1⁄2"

3⁄4"

1"

11⁄4"

11⁄2"

2"

21⁄2"

2.5

6.8

6

10

27

49

70

103

168

2.5

6.8

17

36

58

89

153

205

-

Operating torque (N m)

Cv (UK) = Kv x 0.963

Cv (US) = Kv x 1.156

Size

1⁄4"

"

1⁄2"

3⁄4"

1"

11⁄4"

11⁄2"

2"

21⁄2"

Reducedbore

2

2

2

3.5

13

21

30

40

45

Fullbore

2

2

3.5

13

21

30

40

45

-

The indicated torque values are for valves frequently operated, that are submitted to a maximum differential pressure of 62 bar.

Valves that are subject to long static periods, may require greater break-out torque.

Safety information, installation and maintenance

For full details see the Installation and Maintenance Instructions supplied with the product.

Welding

Only the models that have connections designed for welding (SW, BW, Imperial Tube connections) should be welded. Valves with SW or

BW welding connections must be disassembled before welding onto the pipeline, the ends should be welded separately and the valve

should be reassembled when the ends are cool. Carbon steel valves with threaded (BSPT, BSP, NPT) or flanged connections must not

be welded to avoid damages to the valve and/or injury to personnel.

How to order example:

1 off Spirax Sarco 1⁄2" screwed BSP M10S2FB ball valve.

Optional extras:

-

Self-venting ball.

-

Extended stems 50 mm (2") and 100 mm (4") to allow full insulation.

-

Lockable handle.

-

Oval handle for confined spaces. Ideal for trap modules.

Spare parts

The spare parts available are shown in solid outline. Parts drawn

in a grey line are not supplied as spares.

Available spares

Seat and stem seal set

5, 6

How to order spares

Always order spares by using the description given in the column

headed 'Available spares' and state the size and type of ball valve.

Example: 1 - Seat and stem seal set for a 1⁄2" M10S2FB ball valve.

5

6

5

6

Page 4 of 4

TI-P133-06 ST Issue 18

M10S Ball Valve DN1⁄4" to DN21⁄2"