Air & Dirt Separators
The Armstrong dirt & air separators (DAS) are designed to eliminate trapped air and suspended dirt particles associated with the start-up and maintenance of hydronic and HVAC systems.
The Spirovent® Dirt and Drain Air Eliminator / Dirt Separator uses our patented Spirotube® medium to "scrub” the air and dirt from the system fluid and creates two low velocity, low turbulence separation chambers. Simple to install with a straight in-line full flow design it is available in the VDR, VDT, and VHT “Dirt” model as a sealed vessel and the VDN and VHN “Drain” model that includes a removable head and tube sheet construction. This allows access to the Spirotube bundle for inspection or cleaning. Two full flow functions in one cost effective product eliminates the need for a separate air separator and high maintenance side-stream filter.