Caleffi 502040A MINICAL® Automatic Air Vent, 1/2″ NPT Male

Description

The Caleffi 502040A is a MINICAL air vent with a 1/2 in NPT male connection and a brass body, used to automatically discharge air that collects at the high points of hydronic heating and cooling systems.

Product data compiled from Caleffi North America technical documentation. Last reviewed June 2026.

FunctionAutomatic Air Vent