If you have ever wondered exactly what a deaerator vacuum breaker is and does, you are not alone. These are actually highly specific devices which are used for the continual removal of gases from water. They use a complicated network of parts to ensure total compliance in the job and its mission.
Essentially the entire system is comprised of a catch basin, a pump for vacuuming and a pump for forwarding. The pumps on the vacuum line are protected by demisters and condensers. The purpose of the protection is to aid against corrosive elements contained in the gas stream. Water seals are a very important component of the deaerator vacuum breaker as they prevent air from being re-introduced into the water. These types of devices also use controls for the flow rate of the feedwater which are called level transmitters.
The sizes of the units on the marketplace can vary wildly. They generally range from 100 gallons per minute all the way up to 100,000 gallons per minute for a lone unit. There are also models which feature all of the “bells and whistles” and are known as complete systems rather than merely standalone units. Obviously, these complete systems are made for large-scale facilities and are quite expensive to purchase.
These types of systems using a deaerator vacuum breaker are mainly used to remove volatile gases from the water stream and their corrupted ingredients. The scaling and mineralization which can occur from too many gases in the water stream is completely solved by seprating them using the deaerator. They are also used in boiler feedwater to remove all traces of carbon dioxide.
As you can see, these mechanisms can be quite complicated but they are much needed for those who have a genuine use for them.