Spirax Sarco USM21 Series Universal Bimetallic Steam Traps

$593.00

For use with Universal Connectors

The USM21 is a pre-set and maintenance free sealed bimetallic steam trap manufactured in stainless steel. It is designed for applications such as steam tracing and main drips. When installed in any position with a suitable connector the USM21 can easily and simply be removed without breaking in the pipeline, thus speeding up trap replacement with minimal system downtime.

Option:
Traps are available in a range of subcooled temperature settings. Except for start-up and shutdown, they must operate above the minimum differential pressure values shown below:
Nominal subcooled temperature

  • -18 F (-10 C) / External identification: “-1” / Minimum differential pressure: 73 psig (5 bar g)
  • -54 F (-30 C) / External identification: “-3” / Minimum differential pressure: 29 psig (2 bar g)
  • -90 F (-50 C) / External identification: “-5” / Minimum differential pressure: 8 psig (0.5 bar g)
  • -126 F (-70 C) / External identification: “-7” / Minimum differential pressure: 2 psig (0.1 bar g)

Connector Sizes: ½”, ¾”, 1”
Connector Connections: NPT, SW
Connector Construction: Straight or strainer type (left or right hand), Stainless steel or cast steel
Connector Options: SW connections to ANSI B16.1 – 1Carbon steel – USTSII trap station

Limiting Operating Conditions
Max operating pressure (PMO): 300 psig (21 bar g)
Max operating temperature (TMO): 752 F (400°C)

Pressure Shell Design Conditions:
PMA Max allowable pressure: 725 psig @ 104 F / (50 barg @ 40 C)
TMA Max allowable temperature: 842 F @ 420 psig / (400 C @ 29 barg)

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Additional information

Weight 1.3 lbs
Brand

Series

MPN

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Temperature

18 Deg F, 54 Deg F, 90 Deg F, 126 Deg F

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