Caleffi Discal Air Separator NPT

The Caleffi Discal air separator (NPT) continuously removes air from hydronic heating and cooling systems. It is also known as an air eliminator or air scoop. It removes air down to micro-bubble level, and its internal body shape keeps head loss low. Flow can run in either direction.

Key Features:

• High air separation efficiency: Removes air to the micro-bubble level. Micro-bubbles merge into larger bubbles, rise to the top and are released automatically.
• Durable construction: Brass body with a stainless steel float guide pin and linkage. The internal element is glass-reinforced nylon.
• NPT female threaded connections: Install directly into threaded piping.
• Bidirectional flow: Flow in either direction is permitted.
• Rated for hydronic service: 150 psi maximum working pressure. Temperature range is 32 to 250°F. Handles glycol solutions up to 50%.

Removing air helps the system run quietly and reduces corrosion and mechanical damage to system components. The Discal is a good choice for boiler loops, radiant heating and chilled water systems. Caleffi makes it as part of its 551 series.