Dimensions/weights (approximate) in mm and kg
FT57H
Size
A
B
C
D
E
Weight
DN15
150
48
126
151
119
7.5
DN20
150
53
126
151
119
8.0
DN25
160
58
126
151
119
8.5
DN40
230
75.5
192
208
168
27.0
DN50
230
83
192
208
168
28.0
FT57V
Size
A
B
D
E
F
G Weight
DN15 150
48
214
119
96
175
7.5
DN20 150
53
214
119
106
175
8.0
DN25 160
58
221
119
116
175
8.5
DN40 230
75.5
312
168
151
255 29.0
DN50 230
83
312
168
166
255 30.0
FT57V DN15 - DN50
B
D
E
F
FT57H DN15 - DN50
B
C
D
E
A
DPMX - Maximum differential pressures
Size and model
DN15, DN20 and DN25 4 bar
-
DN40 and DN50
-
4.5 bar
5.5.104
FT57H-4
FT57V-4
FT57H-4.5
FT57V-4.5
FT57H-8
FT57V-8
8 bar
-
FT57H-10
FT57V-10
-
10 bar
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FT57H-12
FT57V-12
12 bar
-
FT57H-20
FT57V-20
20 bar
-
FT57H-28
FT57V-28
-
28 bar
FT57H-32
FT57V-32
32 bar
-
Capacities (in accordance with ISO 7842)
Capacities shown are based on boiling hot condensate.
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DN15, DN20 and DN25
DN40 and DN50
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DDifferential pressure bar (x 100 = kPa)
Steam traps
Ball float
DDifferential pressure bar (x 100 = kPa)
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)
Additional cold water capacities from thermostatic air vent under start-up conditions
Pressure (bar)
DN15, DN20 and DN25
DN40 and DN50
0.5
1
2
3
4
4.5
8
10
12
16
20
28
32
460
680
900
1080 1250
-
1700
-
2000 2250 2550
-
3000
460
680
900
1 080
-
1300 1700 1900
-
2250 2550 2900
-
How to order
Example: 1 off Spirax Sarco DN40 FT57H-4.5 ball float steam trap with SG iron body and cover. Flanged connections to EN 1092 PN40.
Trap to be fitted with the optional balance and drain connections.
Note: If the product has the optional steam lock release fitted the nomenclature would be FT57-4.5-C.
Spare parts
See TI-P603-05 for relevant information.
TI-P603-02 ST Issue 4
FT57 SG Iron Ball Float Steam Trap with Flanged Connections
A
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