Automatic Air Vents & Air Eliminators
Thrush air vents provide automatic air venting for hot or cold water closed loop systems.
Model 720 Automatic Air Eliminator
The 720 Automatic Air Eliminator has been designed to eliminate air as fast as it can be separated. Use on any hydronic or water service system where pressure does not exceed 150 PSIG and the temperature is no greater than 250 degrees Fahrenheit. Its design lends to maintenance-free operation due to the self-cleaning mechanism. The 720 Air Eliminator will not open if negative pressure occurs so air cannot be drawn back into the system should a vacuum situation occur.Product Details
Model 721 Automatic Air Eliminator
One size Automatic Air Eliminator handles all size jobs. The 721 Air Eliminator combines both air separation and elimination into one economical, easily installed, compact unit. The 721 obsoletes the installation of large separators (up to 10” and 12” pipe sizes) and is ideal for HVAC installations on upper finished runs and pump by-pass applications. It combines a 1” vortex air separator and 720 Air Eliminator Vent mechanism. This prevents air from entering the system in vacuum conditions. Compact size allows installation at the top of a system in finished space or ceiling crawl spaces. The 721 can also provide air elimination when piped across the differential of large capacity pumps.Product Details
Model 706 Automatic Air Vent
The automatic #706 Air Vent has been designed for use on any hydronic or water service system where pressure does not exceed 150 PSIG and the temperature is no greater than 240 degrees F. The #706 Air Vent should be installed in an accessible location at the high points of the system. Installation In a hydronic heating system, air removal can be accomplished most efficiently by installing a #706 Air Vent with a properly sized Air Purger or Air Separator. The purger separates the air from the water and diverts it to the Air Vent for quick and automatic removal. A 3/4" NPT tapping is provided on the Air Vent for this connection.Product Details
promising quality since 1923
For All Your Hydronic Solutions, Think Thrush.
We don’t just talk about the quality and superiority of our products. We prove it. Every Thrush product is skillfully designed and rigorously tested to meet our standards. And our standard is simple: our heating and cooling products need to be the best in the Hydronics market.