Steam traps Ball float
8
Pressure/temperature limits
Pressure psi g
0 72.5 145 218 290 363 435 508 580 752 572 392 212 32 B Steam saturation curve A C
Pressure bar g
The product must not be used in this region. This product should not be used in this region as damage to the air vent may occur.
A - B Flanged EN 1092 PN40 and ASME (ANSI) 300. A - C Flanged ASME (ANSI) 150.
Note: The use of the bimetallic element extends the superheat resistance to in excess of 400 °C (752 °F).
Body design conditions PMA Maximum allowable pressure
40 bar g @ 100 °C 580 psi g @ 212 °F
TMA Maximum allowable temperature
400 °C @ 27.4 bar g 752 °F @ 397 psi g
Minimum allowable temperature
-10 °C
14 °F
PMO Maximum operating pressure for saturated steam service
32 bar g @ 239 °C 464 psi g @ 462 °F
When fitted with a capsule
285 °C @ 30.3 bar g 545 °F @ 439 psi g
TMO Maximum operating temperature
When fitted with a bimetallic air vent
400 °C @ 27.4 bar g 752 °F @ 397 psi g
Minimum operating temperature Note: For lower operating temperatures consult Spirax Sarco
0 °C
32 °F
DN15 DN20 DN25
½" ¾" 1"
DN40 DN50
1½" 2"
Size
8.5 93
FT46-4.5 FT46-10 FT46-14
4.5 bar
65 psi
4.5 bar
65 psi
PMX Maximum differential pressure
10 bar
145 psi
10 bar
145 psi
14 bar
203 psi
-
-
FT46-21
21 bar
305 psi
21 bar
305 psi
FT46-32
32 bar
464 psi
32 bar
464 psi
Product is safe for use under full vacuum conditions Designed for a maximum cold hydraulic test pressure:
60 bar g 870 psi g
Note: With internals fitted, test pressure must not exceed:
48 bar g 696 psi g
Caution: The trap in its complete operational form must not be subjected to a pressure greater than 48 bar (696 psi) otherwise damage to the internal mechanism may result.
TI-P143-01 CMGT Issue 15
Page 3 of 10
FT46 Stainless Steel Ball Float Steam Traps DN15 to DN50 (½" to 2")
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