Boiler house

TDS blowdown controls

Pressure / temperature limits – BCV8_

BCV83 Flanged EN 1092

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A -C

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Pressure bar g

The product must not be used in this region.

Flanged EN 1092 PN63

Flanged EN 1092 PN100

D

Steam

B

Pressure psi g

C

saturation

curve

E

B

C

BCV82 Socket weld

BCV83 Flanged ASME

BCV84 Butt weld

Steam

saturation

curve

E

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Pressure bar g

The product must not be used in this region.

Flanged ASME class 600, socket weld and butt weld

BCV83 Flanged JIS / KS

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Pressure bar g

The product must not be used in this region.

F - F Flanged JIS/KS 20K

G - H Flanged JIS/KS 30K

Cv (US) = Kv x 1.156

F

Steam

saturation

curve

F

H

Kvs values

For conversion:

Cv (UK) = Kv x 0.963

Valve size

DN15 DN20

DN25

DN32 DN40 DN50

Kvs value

0.5 0.5

0.5

1.6 1.6 1.6

TI-P403-102 AB Issue 4

Page 11 of 14

BCV Blowdown Control Valves DN15 to DN50 (1⁄2" to 2")

2.4.16

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