Double Duty®-12 Steam Trap/Pump Combination Packages


ASME Code Stamped Carbon Steel

For pressures to 200 psig (13.7 bar) . . .
Trapping Capacities to 93,000 lb/hr (34,711 kg/hr)
Pumping Capacities to 19,900 lb/hr (7,427 kg/hr) 

The Armstrong Double Duty®-12 steam trap/pump trap
combination is an easy to install solution for draining heat exchangers
in various applications.  The DD-12 combines the versatility of
combining a pump within a steam trap to aide in condensate drainage
within a closed-loop system.

  • No electricity required.
  • Space savings size. No external trap/piping required.
  • Single trade installation.
  • Intrinsically safe.
  • ASME code Carbon Steel Body. Rugged construction material means long service life.
  • Efficiency. A closed loop means no motive or flash steam is lost. All valuable Btu’s are captured and returned to the system.

Typical applications

  • Low-pressure heating systems
  • Process heat exchangers or coils
  • Systems under vacuum
  • Hazardous (explosion-proof) areas
  • Flash tanks

NOTE: Armstrong can also custom fabricate
packages to meet your specific needs. Pre-piped Low Boy™, closed-loop
and custom-fabricated skid packages are available.

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Product Literature

Submittal Drawing 
Double Duty®-12 Steam Trap/Pump Combination Packages

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