Simplified Installation: Standard 1/4" male spade terminals allow for direct plug-and-play replacement in existing wiring harnesses

Key Benefits Precise Thermal Protection: Factory-calibrated to open at 255°F

Whether you are performing a TXV orifice replacement or a new system HVAC expansion valve sizing

Delivers consistent 70W heat output to ensure startup reliability in cold ambient conditions

covering both 5000 and older 1000 series (with mounting screws) valve applications

Allanson Transformers 421-BT290 Transformer Els PW 17895 Simplified Installation: Standard 1/4" maleThe Allanson 421 BT290 is a heavy duty universal ignition transformer engineered for high performance oil burner service and replacement applications. Operating on a 120Vac supply voltage, this unit delivers a consistent 10,000Vac secondary voltage at 23mA, ensuring reliable arc initiation even in demanding environments. Designed with a mid point ground and a durable internal junction box, it simplifies field wiring while maintaining electrical