Spirax-Sarco 55226 Main Valve 30067439-890 It also replaces older part

It also replaces older part numbers B1809923 and B1809912

If you hear a humming sound or smell a metallic odor when the thermostat calls for heat

This kit provides essential overcurrent and short-circuit protection

With a Kv value of 16

System Protection: Minimizes the risk of acid buildup and freeze-ups at the expansion device

Spirax-Sarco 55226 Main Valve 30067439-890 It also replaces older partThe Spirax Sarco 55226 is a rugged 1 1 2" NPT main valve engineered for precision high capacity steam regulation. As the foundational component of the 25 series pilot operated regulator system, this cast iron valve body is rated for up to 250 psi and 450F, making it a standard for heating and process steam applications. Its normally closed design ensures a positive ANSI FCI 70 2 Class IV shut off, preventing steam leakage during dead end service. This