Amtrol 443 Hydronic Expansion Tank Air PurgerThe Amtrol 443 Hydronic Expansion Tank Air Purger is engineered for efficient air removal in hydronic systems. This in line air vent combines an air purger and an automatic float vent to help maintain optimal circulation, reduce noise, and extend system life in residential or commercial hydronic heating setups. Designed for easy integration with a 1 inch nominal size and female threaded end connections, the unit fits compact spaces in expansion tanks

Electrical rating: 24V AC

the 1E30N-910 combines simple performance with eco-friendly design

a rugged Butyl rubber diaphragm

This overflow safety switch monitors condensate levels and safely interrupts operation to prevent water damage

this genuine AO Smith component ensures the safety and compliance of your gas water heating system

20 compliance

This AO Smith parts compatible kit is engineered for reliable performance in select gas water heaters and furnaces

Enclosure: rugged enclosure suitable for panel mounting and protection

Swing radius: 3

long-term service in electrical systems requiring a compact

mixing tees and proportional pre-mixers

UL and CSA approved for safety and reliability