ViraVent - Deaerator

Viratop Automatic Air Vents automatically purges air, micro bubles and other gases from the system into the atmosphere quickly and reliably. Air can be collected at high points or specifically designated collection points.

The Viravent is a high efficiency in-line air separator suitable for use on heating and chilled systems. In sealed heating systems free and dissolved air cause a number of problems.

The Viravent is a high efficiency in-line air separator suitable for use on heating and chilled systems. In sealed heating systems free and dissolved air cause a number of problems. Micro-bubbles form on the pump suction as a direct result of localised pressure drop. This directly affects the liquid displacement of rotary pumps, reducing the flow capacity and therefore the efficiency of the system. The presence of micro-bubbles and dissolved gas can reduce the liquid displacement of a pump by 10 to 45%. Heat will also allow dissolved gasses to be drawn out of solution, following Henry's law, placement of this equipment is important to guarantee effective operation. Effective removal of free air is essential for increasing the operational life of the system as a whole.

The ViraVent air separator units are installed to efficiently remove air and micro bubbles from the system. In heating systems, an air separator should be installed in the flow loop where the system experiences the highest temperature (next to the heat source) and lowest pressure. Air separators should ideally be installed immediately after the boiler and prior to the pump suction port as this is where the formation of micro bubbles is greatest. In a chilled water system the unit must be located in the return loop just prior to the chiller.