Steam traps Swivel connectors and traps
8
Pipeline connector options The UTD26 and UTD26Y can be fitted to a variety of pipeline connectors: PC10HP Straight connector ASME 600
(TI-P128-10)
PC20
Connector with Y-type strainer
ANSI/ASME
(TI-P128-15)
PC3_
Straight connector with one piston isolation valve
ASME 600
(TI-P128-34)
PC4_
Straight connector with two piston isolation valves
ASME 600
(TI-P128-33)
STS17.2 Steam trapping station
PN40
(TI-P128-22)
Note: Spirax Sarco recommend that UTD26 without strainer variants only be installed on a pipeline connector with integral strainer or when a Y-type strainer is installed upstream of the trap. See the relevant Technical Information sheet as listed above for details of the connections available for each pipeline connector.
Pressure/temperature limits (ISO 6552)
Pressure psi g
0
100 200 300 400 500 600 725
0 50 150 250 350 425
250 150 350 450 550 650 797
A B
Steam saturation curve
C
0
20
30
40
50
0
10
Pressure bar g
The product must not be used in this region The product should not be used in this region
A - C UTD26LY and UTD26HY, UTD26L and UTD26H B - C UTD26LAY and UTD26HAY, UTD26LA and UTD26HA
Note: The model of pipeline connector and connection selected will dictate the maximum operating limits of the complete assembly. Reference the specific pipeline connector Technical Information sheet as detailed in 'Pipeline connector options'.
8.9 56
Body design conditions
ASME B16.34 Class 300
PMA Maximum allowable pressure
49.6 bar g @ 38°C (719 psi g @ 100 °F)
TMA Maximum allowable temperature
425°C @ 28 bar g (797 °F @ 406 psi g)
Minimum allowable temperature
0 °C (32 °F)
PMO Maximum operating pressure for saturated steam service
26 bar g (377 psi g)
UTD26L and UTD26H, UTD26LY and UTD26HY 370°C @ 26 bar g (698 °F @ 377 psi g) UTD26LA and UTD26HA, UTD26LAY and UTD26HAY 255°C @ 26 bar g (491 °F @ 377 psi g)
Maximum operating temperature
TMO
Minimum operating temperature
0 °C (32 °F)
D PMX Maximum differential pressure
26 bar g (377 psi g)
PMOB Maximum operating backpressure should not exceed 80% of the upstream pressure Minimum inlet pressure for satisfactory operation
0.25 bar g (3.6 psi g)
Product is safe for use under full vacuum conditions Designed for a maximum cold hydraulic test pressure of:
75 bar g (1087.7 psi g)
TI-P154-04 CMGT Issue 3
Page 2 of 6
UTD26 and UTD26Y Stainless Steel Thermodynamic Steam Traps with Swivel Connector
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