Product Handbook 2026 - Volume 2

Steam traps Inverted bucket

8

Pressure/temperature limits (ISO 6552)

Pressure psi g

0

145

290

435

580

572

A

392

Steam saturation curve

212

C

B

32

Pressure bar g

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

Body design conditions

PN40

PMA Maximum allowable pressure

40 bar g @ 120 °C

580 psi g @ 248 °F

TMA Maximum allowable temperature

300 °C

572 °F

Minimum allowable temperature

-10 °C

14 °F

PMO Maximum operating pressure for saturated steam service

32 bar g

464 psi g

5.6.29

TMO Maximum operating temperature

300 °C

572 °F

Minimum operating temperature

0 °C

32 °F

Maximum differential pressure

∆ PMX

Size

4 bar (58 psi)

8.5 bar (123 psi)

12 bar (174 psi)

20 bar (290 psi)

32 bar (464 psi)

DN15 - ½"

HM34/8

HM34/7

HM34/6 HM34/5 HM34/4

DN20 - ¾"

HM34/10 HM34/8

HM34/7

HM34/6 HM34/5

DN25 - 1"

HM34/12 HM34/10 HM34/8 HM34/6 HM34/5

8.6 26

Designed for a maximum cold hydraulic test pressure of:

60 bar g

870 psi g

TI-P072-01 CMGT Issue 10

Page 2 of 8

HM34 Series Carbon Steel Inverted Bucket Steam Traps

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