Rolairtrol Air Separator Hot & Chilled Water

Bell & Gossett : Air-Sediment Control : Tangential Air Separators

Rolairtrol-Air-Separator-185x300

The Bell & Gossett Rolairtrol® is a patented centrifugal style air separator for use in any HVAC system. Its 3-to-1 body diameter to nozzle diameter ratio slows the fluid velocity to help entrained air come out of solution, while its tangential inlet and outlet nozzles induces centrifugal fluid flow. This centrifugal flow creates a low pressure vortex in the center of the tank where entrained air can come out of solution and float to the top of the tank where it can easily be removed via an air vent or connection to an expansion tank.

The Rolairtrol is also available with or without a 304 stainless steel strainer to help break the fluid surface tension and remove suspended solids from your system fluid. Contaminants such as air and suspended sediment can lead to diminished heat transfer, higher energy costs, damage to your system components, and increased system noise. By removing them you can lower the cost to operate your system, extend the life of your components, and provide better comfort to your building occupants.

All Rolairtrol models are designed, constructed, inspected, and stamped per Section VIII, Division 1 of the ASME code for 125 psi (862 kPa) maximum working pressure and 350°F (177°C) maximum working temperature. Higher pressures and temperatures are available upon request. Models are available in sizes 2″ through 36″ and are available with NPT (2″ through 3” only), flange, or groove end connections.

Features and Benefits

Removes Entrained Air and Suspended Sediment

  • To protect the system against damage
  • To provide better heat transfer
  • To reduce energy costs
  • To eliminate system noise

Centifugal Flow Pattern

  • Creates low pressure vortex in center of tank
  • Lowers pressure drop through the tank

Models from 2″ – 36″

    • Cast iron (2” through 3”) and carbon steel (3” – 36”) bodies

-Other body materials available upon request for 3” – 36” models)

    • NPT (2″ & 2½″), flange, or groove connections available
    • With or without strainer

-304 stainless steel
-3/16” diameter perforations, 51% open area

Designed, constructed, inspected, and stamped per Section VIII, Division 1 of the ASME Code

  • Standard models rated for 125 psi (862 kPa) working pressure. Higher pressures available upon request

Models (see Brochure A-307A for dimensions & weights)

R-3F
R-4F
R-5F
R-6F
R-8F
R-10F
R-12F
R-14F
R-16F
R-18F
R-20F
R-22F
R-24F

Bell & Gossett offers several useful engineering tools for easy sizing of every area of a building. Simple to navigate software gives you accurate information and up-to-date documentation downloadable straight into your submittal package.
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System SyzerSystem Syzer (available online, PC download, and iOS app)
System Syzer PsychrometrySystem Sizing related to coil cooling (link downloads .exe file)
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Bell & Gossett is a leading manufacturer of pumps, valves, heat exchangers, and accessories for plumbing, wastewater, and HVAC—including steam and heat transfer—applications. To build and operate an efficient water system, you need both the right products and experts who know the application. Here, you can access Bell & Gossett’s trusted network of partners who have the experience you need to get the job done right.

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