2" Cast Iron Air Scoop

Product Overview

The Amtrol 446-1 Air Purger is a cast iron hydronic system air separator engineered for efficient removal of entrained air and microbubbles from closed-loop heating and cooling systems. Designed for use with Amtrol 700 Series automatic air vents and Extrol expansion tanks, this purger enhances system performance, protects components from air-related corrosion, and ensures proper hydraulic balance. Manufactured to maintain system integrity under operating pressures up to 125 psi, the unit is suited for professional hydronic system design and installation.

Technical Specifications

• Manufacturer: Amtrol, Inc.
• Model Number: 446-1
• Description: Air Purger (Air Scoop) for Hydronic Systems
• Reference Number: 2046
• Type: In-line hydronic air separator
• Nominal Connection Size: 2 in
• Connection Type: Female threaded (NPT)
• Body Material: Cast Iron
• Length: 8 in (203 mm)
• Width: 3-1/2 in (89 mm)
• Height: 5 in (127 mm)
• Working Pressure Rating: 125 psi (maximum)
• Operating Temperature Range: Standard hydronic temperature conditions
• Flow Orientation: Horizontal inline installation
• Compatible Components:
  • Amtrol 700 Series automatic air vents
  • Amtrol Extrol expansion tanks
• Function: Removes entrained air and microbubbles from circulating hydronic fluid to prevent air binding and corrosion
• Design Features:
  • Internal baffle system promotes air separation efficiency
  • Precision-machined cast iron body for durability and thermal stability
  • Top port provided for vent installation
• Installation: Install horizontally in main supply line; air vent attaches to upper tapping; expansion tank connects to bottom tapping
• Application:
  • Closed-loop hydronic heating systems
  • Boiler and radiant system air management
  • Commercial and residential mechanical installations
• Compliance: Manufactured in accordance with industry standards for hydronic components

Summary

The Amtrol 446-1 Air Purger is a 2-inch cast iron in-line air separator rated for 125 psi. Measuring 8 inches in length by 3-1/2 inches in width and 5 inches in height, it is designed for integration with Amtrol 700 Series air vents and Extrol expansion tanks. Engineered for efficient air elimination, it provides reliable performance in professional hydronic heating and cooling systems.