and 43 Siemens starters

System Protection: Acts as a critical safety cutoff to prevent overheating during restricted airflow or blower failure

Verified Compatibility: Direct OEM match for 89M7301 and 100335-05

making it highly efficient for continuous or intermittent use

While the assembly includes the primary motor and blower housing

Metraflex MVC150075 Air Vent 322027-701 and 43 Siemens startersThe Metraflex MVC150075 Air Vent, also known as the MetraVent MVC 15, is a heavy duty, float operated automatic air release valve designed for high point installation in hydronic heating and cooling systems. Built with a rugged ASTM A126 Class B cast iron body and cover, this factory new OEM part features a 3 4 inch NPT inlet and a 1 2 inch NPT outlet. It is specifically engineered to eliminate air pockets that cause air locks, pump cavitation, and