Air and Dirt Separators
Installing an Air and Dirt Separator guarantees the continual removal of air and dirt from the system, thus optimising equipment efficiency & minimizing downtime.
Separators & Filtration Systems
Valves & Ancillary
Valves & Ancillary
Economical, reliable and convenient
The installation of an Optivent ensures the continual removal of air from the system so that the equipment is performing at its optimum performance all the time.
- Operating pressure 0-16bar
- Fluid temperature 0-100°C
- Sizes DN50 to DN600
- Available as air only or as a combined unit
- Large throat air vent fitted, also available as individual items.
WE CAN HELP YOU CHOOSE THE RIGHT Air and Dirt Separators FOR YOUR PROJECT
How air is generated
“In chemistry, Henry’s law is one of the gas laws, formulated by William Henry in 1803. It states that: At a constant temperature, the amount of a given gas dissolved in a given type and volume of liquid is directly proportional to the partial pressure of that gas in equilibrium with that liquid. Or solubility of a gas in a liquid at a particular temperature is proportional to the pressure of that gas above the liquid.” The 3 types of air that exist in a system are:
- Free air – air that generally accumulates at the high points or dead ends of a system. It is air you can ‘see’.
- Microbubbles – entrained air bubbles that over extended period of time and through extensive commissioning practices, eventually become free air. The greater the velocity of the system, the less chance of microbubbles transferring to free air.
- Dissolved air – microbubbles not visible to the naked eye. Essentially a gas, that only morphs into microbubbles as the pressure is reduced in a system.
The air chamber of Optivents are designed to remove both free air and microbubbles. For the removal of dissolved gases, refer to the Masterflow Vacuum Degasser system.
Air removal is simple and takes place as the water enters a vertical chamber. This breaks the velocity in the water, and as the microbubbles collide with the internal stainless concentrator, they coalesce to form larger bubbles. The natural consequence is these inflated air bubbles rise to the top and discharge via the automatic air vent installed on the top of the Optivent.
Dirt is the enemy of all HVAC capital equipment, and must be removed. The design of the dirt chamber on an Optivent works in a similar fashion to the air chamber, in that the break in velocity as the water enters the vessel causes anything heavier than water to sink to the bottom. A simple test to verify if the Optivent will remove dirt particles is to put some into a jar and see if it sinks to the bottom. If it doesn’t sink, this is classified as suspended solids, and additional filtration is necessary for its removal – refer Masterflow Filtration…
King Street Wharf Precinct
Air Only Separators (OVA Series)
Dirt Only Separators (OVD Series)
Our extensive range provides the ideal solution to eliminating contaminants such as air and dirt in heating and cooling systems. Our hydraulic separators can quickly and effectively remove free gas and dissolved gas in the systems as well as ease the dirt accumulation within the pipelines. Our products also greatly reduce erosion in the systems, enhance heat exchange efficiency and reduce system noise.
Frequently asked Questions
No. The need to be installed at the hottest point where there is a larger concentration of visual air bubbles, this is where the dissolved gasses form into micro bubbles. Chilled water circuit – the ideal location is on the return line Heating Water system – on the boiler supply line
Masterflow is and has been a trusted name among Australia’s HVAC suppliers for over 20 years. We supply a wide range of pump types and can provide the ideal solution to the many and varied fluid requirements that face the industry. We pride ourselves on remaining agile, innovative, and having fast turn arounds. We are local! All our pumps are locally designed, built and manufactured here in Australia.