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High Pressure Steam Boiler

One Atmosphere Boiler - High Temperature Steam without High Pressure

Traditionally, high pressure is required to produce high temperature steam. Not anymore. MHI's One Atmosphere boilers use patented BoilerFree™ technology to generate steam up to 1300°C without raising operating pressures above one atmosphere. In addition to offering high temperature steam at one atmosphere's pressure, the OAB has these other benefits:

  • No Feedwater Preheating - One Atmosphere Boiler temperatures are available from 300°C to 1300°C without having to preheat feedwater as with traditional steam boilers.
  • No Combustion, No NOX Emissions - OAB's utilize electricity and water to generate pure, clean superheated steam. No combustion processes are involved. This allows OAB devices to have outlet to output efficiencies of over 99%.
  • No Pressure Vessels, No High Pressure - OAB devices generate steam at one atmosphere pressure. No pressure vessel means no boiler inspections or certifications are required to operate an OAB. Review the boiler regulations for your state.
  • Minimal Device Footprint - OAB units start at ~1ft^3. This allows for mutliple installations near the source of steam demand, helping minimize piping losses.
  • Plug and Play - No pipe routing, no difficult installation and easy hot-swappability in the event of device failure.
  • Nearly Instant Steam - No waiting for your steam boiler to build pressure to get to temperature. OAB devices produce superheated steam within moments of a cold start.

OABs offer higher temperatures, greater efficiencies and significant process advantages over most steam boilers on the market. For more information on how an OAB can improve your process, visit the links below for more information or Contact Us.

For more information, see Superheated Steam or One Atmosphere Electric Steam Boiler.

Steam Boiler

Steam Without the Wait

BoilerFree™ technology allows nearly instant steam production. Most MHI steam generators produce superheated in under a minute from a cold start. With a variety of outputs and configurations available, MHI likely has a solution for your steam application.


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©Micropyretics Heaters International Inc. 1995 - 2017
750 Redna Terrace Cincinnati, OH 45215, USA
Telephone: 513-772-0404 | Fax: 513-672-3333