Product Handbook 2026 - Volume 2

Steam traps Sealed

8

Pressure/temperature limits (ISO 6552)

Pressure psi g

0

145

290

435

580

725

32 212 392 572 752

0 100 200 300 400

C

B

A

Steam saturation curve

B A

C

0

10

20

30

40

50

Pressure bar g

The product must not be used in this region. A - B Flanged ASME 300, screwed and socket weld A - C Flanged EN 1092 PN40 A - D Flanged ASME 150

Body design condition

PN50

PMA Maximum allowable pressure

49 bar g @ 38 °C 711 psi g @ 100 °F

TMA Maximum allowable temperature

400 °C @ 28 bar g 752 °F @ 406 psi g

Minimum allowable temperature

-29 °C

-20.2 °F

PMO Maximum operating pressure for saturated steam service

30 bar g

435 psi g

TMO Maximum operating temperature

400°C @ 28 bar g 752 °F @ 406 psi g

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

0 °C

32 °F

SIB30/4 SIB30/5 SIB30/6 SIB30/7

SIB30H/5 SIB30H/6 SIB30H/7

30.0

20.0

12.0

SIB30H/8

8.5

-

SIB30H/10

5.0

PMX Maximum differential pressure

8.8 12

SIB30/8

- -

4.0

SIB30/10

2.5

-

SIB30H/12

2.0

SIB30/12

-

1.5

Designed for a maximum cold hydraulic test pressure of

75 bar g

5.17 psi g

TI-P110-01 CMGT Issue 9

Page 2 of 4

SIB30 and SIB30H Stainless Steel Sealed Inverted Bucket Steam Traps

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