Pipeline ancillaries

Bellows sealed stop valves

Steam

saturation

curve

D

C

B

7.1.15

DN200

Balanced

DN250

Balanced

DN300

Balanced

DN350

Balanced

DN400

Balanced

Unbalanced

Unbalanced

Unbalanced

Unbalanced

Unbalanced

593

735

935

1170

1264

1710

1 804

2 365

2362

3225

Pressure / temperature limits - EN 1092 and EN 12516-1

400

A

D

C

B

Flanged:

300

PN16

200

PN25

100

PN40

0

A-B-B

PN40

The product must not be used in this region

or beyond the parameter of the PMA or TMA

of the relative end connection.

PN40

40 bar g @ 0 °C

400 °C @ 23.8 bar g

-10 °C

31.3 bar g

400 °C @ 23.8 bar g

-10 °C

0 bar g

60 bar g

PN25

25 bar g @ 0 °C

400 °C @ 14.8 bar g

-10 °C

20.5 bar g

400 °C @ 14.8 bar g

-10 °C

0 bar g

37.5 bar g

PN16

16 bar g @ 0 °C

400 °C @ 9.5 bar g

-10 °C

13.5 bar g

400 °C @ 9.5 bar g

-10 °C

0 bar g

24 bar g

A-C-C

PN25

0

5

10

15

20

25

30

35

40

Pressure bar g

Body design condition

PMA Maximum allowable pressure

TMA Maximum allowable temperature

Minimum allowable temperature

PMO Maximum operating pressure for saturated steam service

TMO Maximum operating temperature

Minimum operating temperature

Minimum operating pressure

Maximum differential pressure is limited to the PMO

Designed for a maximum cold hydraulic test pressure of:

Body design condition

PMA Maximum allowable pressure

TMA Maximum allowable temperature

Minimum allowable temperature

PMO Maximum operating pressure for saturated steam service

TMO Maximum operating temperature

Minimum operating temperature

Minimum operating pressure

Maximum differential pressure is limited to the PMO

Designed for a maximum cold hydraulic test pressure of:

Body design condition

PMA Maximum allowable pressure

TMA Maximum allowable temperature

Minimum allowable temperature

PMO Maximum operating pressure for saturated steam service

TMO Maximum operating temperature

Minimum operating temperature

Minimum operating pressure

Maximum differential pressure is limited to the PMO

Designed for a maximum cold hydraulic test pressure of:

A-D-D

PN16

Seat leakage

Disc to seat shut-off conforms to EN 12266-1 Rate A leakage and ISO 5208 Rate A.

Kv values

Please note that the Kv values for a valve supplied without a balanced disc are shown for comparison purposes only. All BSA3BD valves

will be supplied with a balanced disc.

For conversion:

Cv (UK) = Kv x 0.963

Cv (US) = Kv x 1.156

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

= Kv x √ ∆P

Where: = Volume flow in cubic m/h

√ ∆P = Pressure drop in bar

Page 2 of 5

TI-P184-18 ST Issue 3

BSA3BD Bellows Sealed Stop Valves

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