Rotary air separator Termojet Dn25 (1")

The Termojet DN25 angled air separator is a deaerator with an angled connection that removes microbubbles of air and dissolved gases from the heat carrier. DN25 (1") connection with a 90° angled fitting, flow capacity 2,7 m³/h, operating temperature up to 110°C, pressure up to 10 bar. Body — brass. The ideal solution for boiler rooms and plant rooms with densely routed pipework.

Technical Specifications

How It Works

The operating principle is analogous to a straight air separator: the heat carrier enters an expanded chamber where the flow velocity drops sharply. The coalescent insert of welded copper wire provides a surface to which microbubbles "adhere". They merge into larger bubbles, rise to the top, and are discharged through the automatic air vent. The difference from a straight separator is the angled connection: the pipe inlet and outlet are at 90° to each other, which greatly simplifies installation in confined conditions.

Where and How It Is Used

• Boiler room with densely arranged equipment. When there is no straight horizontal section between the boiler's supply and return ports for mounting a straight separator, the angled version allows the deaerator to be connected into a corner without additional bends and fittings.
• Manifold cabinets and connection assemblies. The limited depth of the cabinet makes it impossible to mount a long straight body — the angled separator takes up less space along the pipe axis.
• Renovation of an old system. When replacing a boiler or routing new pipework, the angled connection gives more freedom in positioning the separator.
• Residential heating system up to 30 kW. DN25 (1") is the standard diameter for boilers in this class; a flow capacity of 2,7 m³/h is sufficient for most domestic systems.
• Underfloor heating and mixed systems. Installation after the mixing unit on the supply pipe of the underfloor circuit removes air directly before the manifold.

Advantages

• 90° angled connection — installation without a straight pipe section, fewer fittings, easier installation in a confined space.
• Coalescent insert — effective removal of microbubbles invisible to the eye, for silent and even heating.
• Continuous automatic operation — no maintenance or replacement of filter elements required.
• Brass body — corrosion resistance and long service life under the thermal cycling of a heating system.

Related Products

If installation space permits — consider the straight air separator DN25: a simpler design with the same specifications. For simultaneous removal of air and dirt in a single body, the air and dirt separator DN25 is available. The full range is in the Termojet separator catalogue.