Steam traps

Ball float

A

Steam

saturation

curve

C

B

5.5.79

Pressure / temperature limits

Pressure bar g

This product should not be used in this region as damage to the internals may occur.

The product must not be used in this region.

A - C Flanged ASME (ANSI) A150

A - B Flanged EN 1092 PN25/PN40

Body design conditions

PMA

Maximum allowable pressure

TMA

Maximum allowable temperature

Minimum allowable temperature

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

PN40

40 bar g @ 100 °C

300 °C @ 28 bar g

-10 °C

32 bar g @ 239 °C

285 °C @ 29 bar g

0 °C

60 bar g

PMX Maximum differential pressure

Size

DN15, 20, 25

FT47-4.5

4.5 bar

FT47-10

10 bar

FT47-14

14 bar

FT47-21

21 bar

FT47-32

32 bar

DN40, 50

4.5 bar

10 bar

-

21 bar

32 bar

Designed for a maximum cold hydraulic test pressure of :

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

Caution: The trap in its complete operational form must not be subjected to a pressure greater than 48 bar otherwise damage to the

internal mechanism may result.

Page 2 of 6

TI-P142-01 ST Issue 12

FT47 SG Iron Ball Float Steam Traps (DN15 to DN50)

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