High Capacity Pump Trap - EPT-516 | Armstrong | Americas

High Capacity Pump Trap – EPT-516

High Capacity Pump Trap – EPT-516

Product Specifications

Model EPT-516
Connection Type 150# ANSI Flanged
Maximum Allowable Pressure 150 psig (10 barg)
Maximum Allowable Temperature 500°F (250°C)
Body Material Fabricated Steel ASME VIII division I – ASTM A106 GrB, ASTM A105
Mechanism Material Stainless Steel with Inconel X-750 Spring
Maximum Operating Pressure 150 psig (10 barg)
Maximum Capacity  79,190 lb/hr (35,920 kg/hr)
Inlet Connection Size 4″ (100 mm)
Outlet Connection Size 4″ (100 mm)

High Capacity Pump Trap – EPT-516

The EPT-516 High Capacity Pump Trap effectively recovers and returns hot condensate, which is essential to overall plant efficiency and energy conservation.  This low-maintenance, non-electric solution moves large amounts of condensate and other liquids from low points, low pressures, or vacuum spaces to an area of higher elevator or pressure. Condensate can be returned at temperatures well above the 200˚F (93˚C) limit of conventional electric pumps without the problems of leaking seals or cavitation.


  • Non-electric – Uses inexpensive steam, air or gas to operate the pump trap
  • No leaking seals/packings, impeller wear, electrical or motor problems – Reduces maintenance and downtime
  • Single trade installation or repair reduces installation and maintenance costs
  • Direct spring/float actuated mechanism – No maintenance intensive diaphragm operated valve mechanism
  • Compression spring design – Reduces downtime, ensures performance and reliability
  • Rugged stainless steel internals – Durable and corrosion resistant for enhanced service life
  • Closed loop – No motive steam or flash steam loss, therefore capturing and returning all valuable kJ back to the system (see General Applications on page CRE-226)
  • Safety – Pump can be placed in flooded pits without fear of electrocution or circuit breaker defaults
  • Explosion proof – Standard unit intrinsically safe without additional cost


  • Low-pressure heating systems
  • Process heat exchanger or coils with modulating steam control
  • Remote installations (tracing, tank farms, or remote coils)
  • Systems under vacuum
  • Hazardous (explosion-proof) areas
  • Caustic environments
  • Sumps or submersed areas
  • Reboilers
  • Flash tanks


  • CE