Product Handbook 2026 - Volume 2

Steam traps Ball float

8

Standards This product fully complies with the requirements of the European Pressure Equipment Directive 2014/68/EU and carries the mark when so required. Certification This product is available with certification to EN 10204 3.1. Note: All certification / inspection requirements must be stated at the time of order placement.

Sizes and pipe connections DN15, DN20, DN25, DN40 and DN50.

Horizontal traps: Note the flow direction when facing the body: - DN15 to DN25 is left to right. - DN40 and DN50 is right to left. Standard flanges are EN 1092 PN40 with face-to-face dimensions in accordance with EN 26554 (Series 1), ASME B 16.5 Class 150, ASME B 16.5 Class 300 and JIS/KS 20 flanges are also available with extended face-to-face dimensions. Vertical traps: Note that the flow direction is vertically downwards only. Standard flanges are EN 1092 PN40 with face-to-face dimensions in accordance with EN 26554 (Series 1). ASME B 16.5 Class 150, ASME B 16.5 Class 300 and JIS/KS 20 are also available with face-to-face dimensions in accordance with EN 26554 (Series 1). ASME / JIS / KS flanges are supplied with tapped holes to receive flange bolts. ASME flanges have UNC threads and JIS / KS have metric threads.

Pressure/temperature limits



A

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



Steam saturation curve



D

C B













Pressure bar g

A - B Flanged EN 1092 PN40 and ASME 300 A - C Flanged JIS/KS 2 A - D Flanged ASME 150.

Body design conditions

PN40

PMA Maximum allowable pressure

40 bar g @ 100 °C

8.5 78

TMA Maximum allowable temperature

300 °C @ 27.5 bar g

Minimum allowable temperature

-10 °C

Maximum operating pressure for saturated steam service Note: The DN40 and DN50 traps are limited to a PMO equal to DPMX

PMO

32 bar g @ 239 °C

TMO Maximum operating temperature

285 °C @ 28.5 bar g

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

0 °C

Size

DN15, DN20, DN25

DN40, DN50

FT44-4.5 FT44-10 FT44-14

4.5 bar

4.5 bar

10 bar

10 bar

D PMX Maximum differential pressure

14 bar

-

FT44-21

21 bar

21 bar

FT44-32

32 bar

32 bar

Product is safe for use under full vacuum conditions Designed for a maximum cold hydraulic test pressure:

60 bar g

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.

TI-S02-14 CMGT Issue 18

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FT44 Carbon Steel Ball Float Steam Traps (DN15 to DN50)

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