Conbraco Industries 38-105-01 1" Atmospheric Vacuum Breaker

The Conbraco Industries 38-105-01 Atmospheric Vacuum Breaker is an essential backflow prevention part used in HVAC systems, especially in heating and cooling systems. This 1-inch atmospheric vacuum breaker works by admitting air into the system when the pressure of water drops, to stop back-siphonage which may lead to contamination of drinking water. It is easy to assemble and use and comes with a check valve and an air vent on the lid to equalize pressure or to prevent siphoning if necessary. Often used together with steam-to-water heat exchangers as well as other HVAC systems.