Aar-O-Vent®
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Aar-O-Vent®

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Aar-O-Vent® Anatomy

Image 2 features a closer look at what makes the Aar-O-Vent® the best air and dirt separator in the industry with unmatched efficiency. Beyond the standard features of our models, Thrush offers customized options for your specific applications.

  1. High Capacity Air Eliminator – The Thrush Model 720 High Capacity Air Eliminator releases air as fast as it can be separated. The 720 will not allow air back into the system, even if a vacuum occurs.
  2. Skim Valve – Floating debris can be flushed out by opening the skim valve.
  3. Air Bubbles – Large air bubbles quickly rise to the top of the vessel and into the vent. Then micro bubbles coalesce and form larger bubbles. Entrained air is pulled out of solution and forms micro bubbles.
  4. Stainless Steel Construction – The coalescing medium separates the air and dirt from the water. The stainless steel construction provides durability and long life.
  5. Gauge Taps – Gauge taps on both inlet and outlet connections.
  6. System Water – The system water contains air bubbles, entrained air, and dirt particles.
  7. Filtration – Dirt particles are forced from the water and collect in the bottom of the vessel.
  8. Removable Bottom Cover – Should the need to clean the coalescing medium arise, the standard removable bottom cover provides ease of removal and cleaning.
  9. Blow Down Valve – Collected sediment can be flushed out through the blow down valve.
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Description

Even minimal amounts of air and dirt in a hot water system can cause major issues affecting efficient operation, maintenance costs, and corrosion. The Thrush Aar-O-Vent® air and dirt removal device has been independently proven to remove:

  • 100% of free air
  • 100% of entrained air
  • 99.7% of dissolved air
  • 99% of dirt particles as small as 17 microns

As a result, your hot water systems can operate at peak velocity with virtually no corrosion or water flow issues.

Air And Dirt In Your Hot Water System Could Be Causing Significant Problems

Such as:

  • Decreased flow rate and distribution over the zone
  • Reduced heat transfer resulting in labor-intensive manual bleeding of air
  • Annoying “pinging” and “waterfall” noises
  • Circulator cavitation and premature pump and heat exchanger failure
  • Increased maintenance costs
  • Energy waste

Removing air from your system can be a constant challenge due to undersized expansion tanks, system fills and refills, diffusion through non-metallic tubing, and ever-changing solubility. The best solution to prevent these air and water issues is with the Thrush patented Aar-O-Vent®, a high-performance air and dirt elimination device.