Steam traps Inverted bucket
8
Pressure/temperature limits (ISO 6552)
0 100 200 400 300
A
Steam saturation curve
D
C
B
10
30
51
0
20
40
14.1*
36.1*
41.6*
Pressure bar g
The product must not be used in this region. *PMO Maximum operating pressure recommended. A - B Flanged ANSI 300, screwed and socket weld A - C Flanged BS 4504 PN40 (ISO 7005.1) A - D Flanged ANSI 150 Maximum operating conditions depend on the orifice size. Body design conditions
ANSI/ASME 300 (PN50)
PMA Maximum allowable pressure
51 bar g
TMA Maximum allowable temperature
400 °C
Designed for a maximum cold hydraulic test pressure of:
78 bar g
SCA 30 product is safe for use under full vacuum conditions
5.6.23
Differential pressure limitations
D PMX - Maximum differential pressure bar
Size
3
5
11
15
30
40
DN15 ½" DN20 ¾"
SCA3
SCA5
SCA11
SCA15
SCA30
SCA40
SCA3
SCA5
SCA11
SCA15
SCA30
SCA40
DN25 1"
SCA3
SCA5
SCA11
SCA15
SCA30
SCA40
8.6 20
The SCA15, SCA30 and SCA40 are available as standard and the SCA3, SCA5 and SCA11 to special request.
Note: The pressure limit on the flange specified should be greater than the pressure limit of the internal mechanism. The table opposite offers guidance.
Flange
Pressure (at saturation)
Mechanism available
ANSI 150
14.1 bar g
3, 5, 11 (15 limited to 14.1 bar g)
ANSI 300
41.6 bar g
all versions
PN40
36.1 bar g
3, 5, 11, 15, 30 (40 limited to 36.1 bar g)
TI-P077-05 CMGT Issue 6
Page 2 of 5
SCA Series Steel Inverted Bucket Steam Traps
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