Product Handbook 2026 - Volume 2

Steam traps Sealed

8

Pressure/temperature limits

Pressure psi g

0

290

580

870

1160

1450

B

A

842 752 572 392 212 32

450 400 300 200 100 0

C

Steam saturation curve

A

C

B

0

20

40

60

80

100

Pressure bar g

The product must not be used in this region. A - A Screwed, butt weld, socket weld, flanged DIN 2547 PN100 and ANSI 600.

B - B Flanged ANSI 300. C - C Flanged ANSI 150.

Body design conditions

PN100

PMA Maximum allowable pressure

100 bar g @ 37 °C 1450 psi g @ 98.6 °F

TMA Maximum allowable temperature

450 °C @ 54 bar g

842 °F @ 783 psi g

Minimum allowable temperature

-254 °C

-425 °F

5.8.16

PMO Maximum operating pressure for saturated steam service

60 bar g

870 psi g

TMO Maximum operating temperature

450 °C @ 54 bar g

842 °F @ 783 psi g

Minimum operating temperature

0 °C

32 °F

Note: For lower operating temperatures consult Spirax Sarco

SIB45/10

4.5 bar

65 psi g

SIB45/6

20.0 bar

290 psi g

 PMX Maximum differential pressure

SIB45/5

45.0 bar

653 psi g

8.8 17

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

150 bar g

2176 psi g

TI-P110-02 CMGT Issue 9

Page 3 of 5

SIB45 Stainless Steel Sealed Inverted Bucket Steam Trap

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