since the internal tubing is copper and the fittings are brass

the 13-211-B10 is primarily a steam pressure relief valve

This 100-130F automatic limit switch eliminates the need for manual resets

Miller furnaces

It should be inspected during every burner service

Honeywell R8225A1017 Fan Relay Els PW 17895 since the internal tubing isProfessional grade Honeywell R8225A1017 Fan Relay is designed for demanding general and heavy duty switching in refrigeration, air conditioning, and appliance applications. This 24VAC fan relay features SPDT switching capability, providing versatility for contractors handling field replacements. Built with laminated magnet construction and an untaped coil, it ensures high efficiency and cooler operation under load. The housing includes molded terminal