Caleffi 551054A 2" Sweat Discal Air Separator

The Caleffi 551054A Discal Air Separator is a high-efficiency air elimination device designed for hydronic heating and cooling systems. This 2-inch sweat connection unit effectively removes microbubbles and entrained air from system water, preventing corrosion, noise, and reduced heat transfer efficiency.

Key Features:

• 2-inch sweat (copper) connections for direct soldering into copper piping systems
• Compact disc-shaped design with tangential inlet for optimal air separation
• Stainless steel construction for long-lasting durability and corrosion resistance
• Automatic float-operated air vent included for continuous deaeration
• Low pressure drop design maintains system efficiency
• Suitable for heating and cooling applications up to 240°F and 150 PSI
• Removable air vent cartridge for easy maintenance
• No moving parts in the separation chamber for reliable operation

The Discal Air Separator utilizes centrifugal force and velocity reduction to coalesce microbubbles into larger bubbles that naturally rise to the top collection chamber, where they are automatically vented. This continuous air removal protects system components, improves heat transfer, and reduces energy costs in residential and commercial hydronic systems.