Product Handbook 2026 - Volume 2

Steam traps Ball float

8

FTS23 - Pressure/temperature limits (ISO 6552) Stainless steel body and cover Flanged ASME 150 and Flanged ASME 300

Pressure psi g

B

Steam saturation curve

C

B

Pressure bar g

The product must not be used in this region or beyond the parameter of the PMA or TMA of the relative end connection. B - B Flanged ASME 300 B - C Flanged ASME 150

Body design conditions

ASME 150 or ASME 300

ASME 300

49.6 bar g @ 38 °C 719 psi g @ 100 °F

PMA Maximum allowable pressure

ASME 150

19 bar g @ 38 °C 275 psi g @ 100 °F

ASME 300

425 °C @ 28 bar g

797 °F @ 406 psi g

TMA Maximum allowable temperature

ASME 150

425 °C @ 5.5 bar g

797 °F @ 79 psi g

Minimum allowable temperature

-10 °C

14 °C

FTS23-07

7 bar g @ 425 °C 102 psi g @ 797 °F

ASME 300

FTS23-23

23 bar g @ 425 °C 334 psi g @ 797 °F

PMO Maximum operating pressure

FTS23-07

7 bar g @ 386 °C 102 psi g @ 726 °F

ASME 150

FTS23-23

13 bar g @ 194 °C 188 psi g @ 381 °F

8.5 133

ASME 300

425 °C @ 28 bar g

797 °F @ 406 psi g

TMO Maximum operating temperature

ASME 150

425 °C @ 5.5 bar g

797 °F @ 79 psi g

Minimum operating temperature Note : For lower operating temperatures consult Spirax Sarco

0 °C

32 °F

FTS23-07

7 bar

102 psi

D PMX Maximum differential pressure

FTS23-23

23 bar

334 psi

ASME 300

75 bar g

1 088 psi g

Designed for a maximum cold hydraulic test pressure of:

ASME 150

28.5 bar g

413 psi g

Please note that the trap in its complete operational form must not be subjected to pressures greater than 40 bar g (580 psi g) as damage to the internals may occur.

TI-P605-01 CMGT Issue 3

Page 5 of 10

FTS23 Stainless Steel Body and Cover FTC23 Carbon Steel Body with Stainless Steel Cover Ball Float Steam Traps

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