Forbes Marshall - Trusted Partners in Steam Engineering & Control Instrumentation

Deaerator Head (FMDH)

Forbes Marshall Deaerator Head is designed to rigorously mix cold makeup water, condensate return and flash steam before they are fed into the boiler. Deaeration offers multiple benefits like increasing feedwater temperature, recovering heat from condensate and flash steam and eliminating the dissolved air and oxygen from the feedwater.

The unique design of Forbes Marshall Deaerator heads ensures thorough mixing and maximum deaeration. It is easy to install and the stainless steel construction guarantees a long and maintenance free life.

  • Compact and rugged design without any moving parts ensures long and maintenance free life.
  • Thoroughly engineered for maximum de-aeration and minimum losses.
  • Recovering condensate and flash steam through a de-aerator head reduces fuel bills substantially by raising the feedwater temperature.
  • Helps reduce the water treatment costs by driving off the dissolved gases.
Technical Information Sheet
  1. FMDH Deaerator Head

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    Frequently Asked Questions

    What is the principle behind deaeration?

    As per Dalton’s law, when any liquid is heated, its ability to absorb gases decreases. In the process of deaeration, the temperature of the feedwater is increased in a turbulent manner which facilitates the elimination of dissolved gases from the feedwater.

    What is a deaerator head?

    A deaerator head is a device that removes dissolved gases such as oxygen and carbon dioxide from the water used in oil and gas fired boilers.

    Why is it important to remove dissolved gases from the water used in boilers?

    Dissolved gases can cause corrosion and scaling in the boiler and associated piping, which can lead to reduced efficiency, equipment failure, and costly repairs.

    How does a deaerator head work?

    A deaerator head works by heating the water and exposing it to steam in a low-pressure environment. This process causes the dissolved gases to be released from the water, which are then vented out of the system.

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