Product Handbook 2026 - Volume 2

Steam traps Bimetallic

8

Pressure/temperature limits

Pressure psi g

0 145 290 435 580 725 870 1015 1160 1305 1450 1480 652

32 212 392 572 752

0 100 200 300 400

A

D

C

B

B

Steam saturation curve

D

C

0 10 20 30 40

50 60 70 80 90 100

45

102.1

Pressure bar g

A - B-B Flanged Class 600, Screwed BSP/NPT, Socket weld and butt weld ends A - C-C Flanged PN100 A - D-D Flanged PN63

The product must not be used in this region. The product should not be used in this region or beyond its operating range as damage to the internals may occur.

Body design conditions

Class 600 to ANSI B 16.34

5.3.17

PMA Maximum allowable pressure

102 bar g @ 38 °C

1479 psi g @ 100 °F

TMA Maximum allowable temperature

425 °C @ 57.5 bar g

797 °F @ 833 psi g

Minimum allowable temperature

0 °C

32 °F

PMO Maximum operating pressure

45 bar g @ 425 °C

653 psi g @ 797 °F

TMO Maximum operating temperature

425 °C @ 45 bar g

797 °F @ 653 psi g

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

0 °C

32 °F

8.3 20

Minimum inlet pressure for satisfactory operation

15 bar g

218 psi g

PMX The backpressure for correct operation must not exceed 90% of the upstream pressure. Product is safe for use under full vacuum conditions Designed for a maximum cold hydraulic test pressure of: 166 bar g

2407 psi g

TI-P623-02 CMGT Issue 10

Page 2 of 6

HP45 Bimetallic Steam Trap

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