Grundfos 00529911 Union Adapter Set 321042-401 the Trane THT2243 provides the

the Trane THT2243 provides the exact electrical switching required for 240-volt control circuits

maintaining steady airflow

This is a #56 drill size orifice

as some ADP pistons are cross-rated for specific R410A tonnages

Grundfos 00529911 Union Adapter Set 321042-401 the Trane THT2243 provides theThe Grundfos 00529911 Union Adapter Set is a precision engineered fitting kit designed for seamless integration between Grundfos circulator pumps and standard 3 4 inch sweat copper tubing. This union kit facilitates a reliable, leak free connection, ensuring optimal fluid dynamics within hydronic heating systems and closed loop domestic hot water applications. Built with high grade cast bronze or brass components, these adapters provide superior