Steam traps

Ball float

Steam

satu

curve

ration

D

C

B

5.5.53

A

Pressure / temperature limits

A - B

A - C

A - D

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The product must not be used in this region.

Flanged EN 1092 PN16.

Flanged ASME 125.

Flanged JIS/KS 10

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Pressure bar g

Body design conditions

PMA Maximum allowable pressure

TMA Maximum allowable temperature

Minimum allowable temperature

PN16

16 bar g @ 120 °C

220 °C @ 12.1 bar g

0 °C

13 bar g @ 195 °C

220 °C @ 12.1 bar g

0 °C

4.5 bar

10 bar

13 bar

24 bar g

PMO

Maximum operating pressure for saturated steam service

Note: The DN40 and DN50 traps are limited to a PMO equal to PMX

TMO Maximum operating temperature

Minimum operating temperature

Note: For lower operating temperatures consult Spirax Sarco

PMX Maximum differential pressure

FT43-10

FT43-14

FT43-4.5

Designed for a maximum cold hydraulic test pressure of:

Note: With internals fitted, test pressure must not exceed PMX

Page 2 of 6

TI-S02-21 ST Issue 12

FT43 Cast Iron Ball Float Steam Trap DN25 to DN50

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