Air separator Termojet Dn40 (1 1/2") 110°C/10bar

Termojet DN40 air separator — a device for continuous removal of microbubbles and dissolved gases from the heating system fluid. Connection DN40 (G 1½"), flow capacity 6.8 m³/h, maximum temperature 110°C, pressure 10 bar, body — brass. Installed once and operates continuously without maintenance.

How It Works

The heat carrier enters the expanded separator chamber, where the flow velocity drops sharply. Inside the chamber is a coalescent insert made of wire mesh with a large specific surface area. Microbubbles adhere to the insert surface, attract one another, and merge into larger bubbles. The combined bubbles rise to the top, where the automatic air vent expels them from the system. Air no longer returns to the system.

Technical Specifications

Where and How It Is Used

The air separator is installed at the hottest point of the system — immediately after the boiler on the supply pipeline. This is where gas solubility is lowest and microbubbles leave the heat carrier most actively. Install once — the device maintains fluid cleanliness continuously thereafter.

• Gas or solid-fuel boiler. Protects the boiler heat exchanger and pump impeller from cavitation caused by microbubbles.
• Commercial boiler room. DN40 — for medium-capacity systems where DN25 is no longer sufficient for the required flow rate.
• Underfloor heating system. Uniform heating of all loops is only possible when there are no air locks in the heat carrier.
• After flushing an old system. Flushing releases sludge and gas — the separator removes the air fraction while the dirt separator collects solid particles.

Industry studies indicate that deaeration of a heating system can yield up to 13% gas savings (in combination with dirt removal) — by restoring the full thermal conductivity of the heat carrier and protecting the heat exchanger from scale build-up.

Advantages

• Coalescent insert — captures even the finest microbubbles invisible to the naked eye.
• Continuous operation without maintenance — no filter element to clog.
• Protection of the pump from cavitation and the boiler from air hammering.
• Quiet system — air in pipelines is the main cause of noise in heating systems.

Related Products

For complete system protection, install the DN40 air and dirt separator alongside the air separator — a 2-in-1 option when a single mounting point for both air and sludge removal is needed. If space is limited, consider the DN40 angled air separator with a 90° connection. Full range — Termojet separators — catalogue.