Caleffi NA553369 Boiler Trim Kit 1" Sweat 30# Tank

Caleffi NA553369 Boiler Trim Kit 30# Tank is designed for hydronic heating system combining multiple control and safety components for boiler setup. It includes a 1" sweat connection for piping integration and a rated expansion tank used to manage system pressure changes during heating cycles in HVAC systems. It is installed in boiler assemblies for residential and commercial heating applications, where it assists in pressure regulation, air separation, and system filling operations. The kit assists in maintaining stable boiler operation by supporting better pressure control and consistent circulation within the heating loop and connected distribution piping network.