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Bottom blowdown systems

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BBV43

Pressure / temperature limits - ASME

Pressure psi g

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Pressure bar g

The product must not be used in this region.

An extended cover is required for use in this region.

High temperature packing required for use in this region.

Notes:

1. Where the process fluid temperature is sub-zero and the ambient temperature is below +5 °C (+41 °F), the external moving parts of the

valve and actuator must be heat traced to maintain normal operation.

2. When selecting a valve with a bellows scaled bonnet, the pressure / temperature limits of the bellows must be read in conjunction with

the valve pressure / temperature limits shown in table below.

A-E-E

ASME 600

A-F-F

ASME 300

A-G

ASME 150

Page 6 of 17

Body design conditions

PMA Maximum allowable pressure

and

PMO Maximum operating pressure

TMA Maximum allowable temperature

Minimum allowable temperature

TMO Maximum operating

Standard packing PTFE chevron (P)

102.1 bar g @ 38 °C

425 °C @ 57.5 bar g

-29 °C

250 °C @ 83.6 bar g

425 °C @ 57.5 bar g

-29 °C

156 bar g

ASME 600

1480 psi g @ 100 °F

797 °F @ 834 psi g

-20 °F

482 °F @ 1212 psi g

797 °F @ 834 psi g

-20 °F

2 262 psi g

ASME 300

740 psi g @ 100 °F

797 °F @ 418 psi g

-20 °F

482 °F @ 608 psi g

797 °F @ 418 psi g

-20 °F

1 117 psi g

ASME 150

284 psi g @ 100 °F

797 °F @ 80 psi g

-20 °F

482 °F @ 175 psi g

797 °F @ 80 psi g

-20 °F

1 117 psi g

temperature

High temperature packing (H)

Minimum operating temperature

Design for a maximum cold hydraulic test pressure of:

Body design conditions

PMA Maximum allowable pressure

and

51.1barg@38°C

PMO Maximum operating pressure

TMA Maximum allowable temperature

Minimum allowable temperature

TMO Maximum operating

Standard packing PTFE chevron (P)

425 °C @ 28.8 bar g

-29 °C

250 °C @ 41.9 bar g

425 °C @ 28.8 bar g

-29 °C

77 bar g

temperature

High temperature packing (H)

Minimum operating temperature

Design for a maximum cold hydraulic test pressure of:

Body design conditions

PMA Maximum allowable pressure

and

19.6barg@38°C

PMO Maximum operating pressure

TMA Maximum allowable temperature

Minimum allowable temperature

TMO Maximum operating

Standard packing PTFE chevron (P)

425 °C @ 5.5 bar g

-29 °C

250 °C @ 12.1 bar g

425 °C @ 5.5 bar g

-29 °C

77 bar g

temperature

High temperature packing (H)

Minimum operating temperature

Design for a maximum cold hydraulic test pressure of:

TI-P405-51 AB Issue 1

BBV Automatic or Manually Actuated Boiler Blowdown Valves DN15 to DN65

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