Pipeline ancillaries Sight glasses
10
Pressure/temperature limits
Pressure psi g
0
14.5
29
43.5
58
72.5
298
212
Steam saturation curve
122
32
Pressure bar g
The product must not be used in this region.
Body design conditions
PN5
PMA Maximum allowable pressure @ 90 °C (194 °F)
5 bar g
72.5 psi g
TMA Maximum allowable temperature @ 3.5 bar g (50.8 psi g)
148 °C
298 °F
Minimum allowable temperature
-29 °C
-20.2 °F
PMO Maximum operating pressure for saturated steam service
3.5 bar g
50.8 psi g
TMO Maximum operating temperature
148 °C
298 °F
Minimum operating temperature. Note: For lower temperatures consult Spirax Sarco.
0 °C
32 °F
Designed for a maximum cold hydraulic test pressure of:
7 bar g
102 psi g
PTMX Maximum test pressure (steam service)
3.5 bar g
50.8 psi g
7.8.4
10.8 3
TI-P022-05 CMGT Issue 8
Page 3 of 5
Single Window and Double Window Sight Glasses
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