Steam traps Ball float
8
Pressure/temperature limits
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.
Steam saturation curve
Pressure bar g
Body design conditions
PN40
PMA Maximum allowable pressure
40 bar g @ 120 °C
TMA Maximum allowable temperature
350 °C @ 28 bar g
Minimum allowable temperature
-10 °C
PMO Maximum operating pressure for saturated steam service
32 bar g
TMO Maximum operating temperature
287 °C @ 32 bar g
Minimum operating temperature Note: For lower operating temperatures consult Spirax Sarco
0 °C
PMX Maximum differential pressures
See overleaf
Designed for a maximum cold hydraulic test pressure of:
60 bar g
Caution: The trap in its complete operational form must not be subjected to a pressure of greater than 48 bar otherwise damage to the internal mechanism may result.
Capacities (in accordance with ISO 7842) Capacities shown are based on boiling hot condensate.
DN15, DN20 and DN25
DN40 and DN50
8.5 149
Differential pressure bar (x 100 = kPa)
Differential pressure bar (x 100 = kPa)
Additional cold water capacities from thermostatic air vent under start-up conditions Under start-up conditions when the condensate is cold the internal thermostatic air vent will be open and provides additional capacity to the main valve. The Table below gives the minimum additional cold water capacities from the air vent. Minimum additional cold water capacities from the air vent (kg/h) Pressure (bar) 0.5 1 2 3 4 4.5 8 10 12 16 20 28 32 DN15, DN20 and DN25 460 680 900 1080 1250 - 1700 - 2000 2250 2550 - 3000 DN40 and DN50 460 680 900 1080 - 1300 1700 1900 - 2250 2550 2900 -
TI-P603-02 CMGT Issue 7
Page 3 of 5
FT57 SG Iron Ball Float Steam Trap with Flanged Connections
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