Product Handbook 2026 - Volume 2

Steam traps Balanced pressure

8

Pressure/temperature limits (ISO 6552) – BT6B Horizontal

Pressure psi g

0

29

58

87

116

145

100 150 200

32 122 212 302 392

Steam saturation curve

0 50

0

2

4

6

8

10

Pressure bar g

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.

Note : For hygienic/sanitary clamp ends the maximum pressure /temperature may be restricted by the gasket or sanitary clamp used. Please consult Spirax Sarco.

Body design conditions

PN10

Suitable for use

Indoor only

PMA Maximum allowable pressure

9.7 bar g @ 38 °C 141 psi g @ 100 °F

TMA Maximum allowable temperature

171 °C @ 7.1 bar g

340 °F @ 103 psi g

PMO Maximum operating pressure for saturated steam service

6 bar g

87 psi g

TMO Maximum operating temperature

165 °C @ 6 bar g

329 °F @ 87 psi g

Minimum operating temperature

0 °C

32 °F

Designed for a maximum cold hydraulic test pressure of

15 bar g

218 psi g

Minimum allowable temperature

10 °C

14 °F

Capacities (in accordance with ISO 7842)

8.2 7

Pressure (psi g)

29

44

58

73

87

15

9920 8818 7716 6613 5511 4409 3306 2204 1102 0

4500 4000 3500 3000 2500 2000 1500 1000 500 0

Cold water capacity

Sub-cooled condensate capacity

1

2

3

4

5

6

Pressure (bar g)

TI-P180-49 CMGT Issue 3

Page 3 of 5

BT6B Horizontal Sanitary Balanced Pressure Thermostatic Steam Trap

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