Is this a direct replacement for the 5H54751-40

including the cadmium-colored spring for specific psi settings

When should the cover gaskets be replaced

The CNT4364 is specifically designed for residential packaged heat pumps with two coils (such as 2WC*

preventing system hunting and optimizing energy use

Weil McLain 510-312-167 Transformer 30067439-890 Is this a direct replacementThe Weil McLain 510 312 167 is a mission critical combination transformer and DPST relay assembly designed for seamless integration into Weil McLain boiler control circuits. This factory spec component serves as a robust 120 24 volt step down transformer, providing a consistent 40 VA power rating to drive low voltage ignition systems, zone valves, and auxiliary controls. Engineered for high demand hydronic environments, the 510 312 167 relay assembly