In-line Deaerators

The modified version of our deaerator range is now available in sizes ½” up to 2”. Features include higher operating and discharge pressure at 10 bar, bi-directional flow, improved air release function, triple mesh filter and increased flow ways with a removable and maintainable cartridge.

Technical Data

In line deaerators help to eliminate micro-bubbles of air from heating and cooling systems. These micro bubbles are often unable to be expelled by standard automatic air vents. The deaerator operates in two ways:

1. Active – The flow of water through the chamber comes into contact with the 3 layer cartridge and causes a swirling effect. This swirling motion enables the microbubbles within the water to combine together and produce larger air bubbles which then rise to the air release point. The resistance across the chamber is very little and will result in a low overall pressure drop.

2. Passive – When the system is dormant large pockets of air will be expelled via the float operated air vent

By fitting a deaerator the heating or cooling systems has increased protection against corrosion, component failure and noise.

Product Features

• High Pressure Rating (10bar)
• Bi-directional
• For Heating and Chilled Water Systems
• Increases System Efficiency
• Reduces Corrosion and Component Failure
• Reduces Noise
• 3 Layer Cartridge featuring 3 Grades of Filter which can be easily removed for maintenance
• Sizes ½” to 2”



Technical Product Guide In-line Deaerators October 2015

Technical Product guide covering the modified version of our deaerator range - sizes ½” up to 2”


Where should I install the In-line Deaerator?
The Deaerator should be installed on the warmest part of the system (Flow for heating, return for cooling) as this is the location where microbubbles will form more readily.

How does an In-line Deaerator work?
The In-line Deaerator has a 3-layer cartridge which when the flow of water hits causes a swirling effect which enables the microbubbles within the water to combine together and produce larger bubbles which can be expelled through the float operated air vent.

What is the recommended flow rate where the Deaerator is installed?