double duty pump trap
In applications where steam flow is modulated to a heat exchanger, there is constant risk of condensate back-up – leading to possible water hammer or corrosion of tube bundles and coils. With the Double Duty® Steam Trap and Pump Combo, condensate is allowed to drain from the heat exchanger under all operating conditions, eliminating the stall problem and optimizing system efficiency.
Benefits of Armstrong's Double Duty system
- Reduced piping layout, detailed engineering and procurement
- Easy to install and maintain
- Minimized field labor
- Shorter overall project lead time
- Single-source responsibility
- Lower total cost of ownership Long life and dependable service
- Simple float/spring operation and rugged all stainless steel construction allow for long trouble-free service life Stress chloride corrosion resistance
- Inconel X-750 springs have higher resistance to stress
DD6 Steam Trap/Pump Combination
Armstrong’s Double Duty™ Series steam trap/pump combination offers a low profile solution to draining heat exchangers in various applications. The Double Duty™ 6 is an ASME code stamped carbon steel vessel (optional). The Double Duty™ 6 offers you the versatility of combining a pump within a steam trap to aide in condensate drainage under all operating conditions.
Features:
- Non-Electric
- Low profile for tight space requirements
- Inconel X-750 springs
- ASME code stamped to 200 psig (available in stainless steel)
- All Stainless steel internals
- Externally removable vent/motive seats
Maximum Operating Conditions:Maximum allowable pressure DD-6 200 psig @ 400°F (14 bar @204°C)
Materials:
Body: ASME code stamped Carbon steel
Springs: Inconel X-750 Internals: All Stainless Steel
DD12 STEAM TRAP/PUMP COMBINATION
Armstrong’s Double Duty-12 steam trap/pump combination offers a unique solution for draining condensate from heat exchangers and coils in various applications. The Double Duty-12 is an ASME code stamped carbon steel vessel (optional) which oers you the versatility of combining a pump mechanism within a steam trap to assist in condensate drainage under all operating conditions.
Features:
- ASME Section VIII “U” stamped vessel (optional)
- Inconel X-750 springs for long service life
- All Stainless steel internals
- Easy access to the steam trap mechanism without removing cap assembly
- Externally removable vent and motive seats
- Seperate pump and trap mechanisms
Maximum Operating Conditions
- Maximum allowable pressure
- DD-12 200 psig @ 400°F (14 bar @204°C)
Materials
- Body: ASME code Carbon steel
- Springs: Inconel X-750 Internals: Stainless Steel
