Built with a 1/2" NPT connection and a durable brass body

Replacing a failing 12100105000181 fan restores the unit's ability to shed heat effectively

The unit is factory-calibrated with the Buna-N diaphragm in a vertical plane

Common Questions: Which actuators are compatible with the D-251-6002

Utica-Dunkirk 550003078 Pilot Conversion Kit 321894-709 Built with a 1/2" NPTThe Utica Dunkirk 550003078 Pilot Conversion Kit is a critical field service component designed for retrofitting or repairing legacy boiler ignition systems. This kit transitions older standing pilot configurations to a more reliable intermittent pilot ignition (IPI) or updated pilot assembly, ensuring stable flame rectification and consistent burner engagement. Engineering specifications focus on high temperature resistance and precise orifice