Caleffi DISCAL Air Separator Press Connection

The Caleffi DISCAL air separator with press connection continuously removes air from the hydronic circuits of heating and cooling systems. It is also known as an air eliminator or micro-bubble air separator. It captures air down to the micro-bubble level and releases it automatically. Removing that air helps protect the system from corrosion, noise, and localized or mechanical damage.

Key Features:

• Very high air discharge capacity, with low head loss from the shaped internal separator body
• Coalescing element with a mesh surface. Micro-bubbles collect on it, merge into larger bubbles, and rise to a float-operated automatic air vent
• Bi-directional flow, so the unit can be installed with flow in either direction
• Brass body with a stainless steel float guide pin and linkage
• Glass-reinforced nylon internal element
• Integral press connections for fast installation without soldering
• Bottom thread for mounting an expansion tank
• Rated for up to 150 psi working pressure and 32 to 250 °F
• Suitable for water and glycol solutions, up to 50% glycol

Removing dissolved and free air lets circulators, boilers, and other hydronic equipment run efficiently. This makes the DISCAL a dependable choice for residential and light commercial hydronic heating and cooling systems.