Allanson Transformers 2721-668 Transformer 30067439-890 the 25663 is built to

the 25663 is built to exceed standard durability requirements

What causes the spring contact to fail on an ignitor

provided the mounting profile matches

including 18 AWG flame sensor lead

The Conbraco 26-314-01 is a professional-grade 1/2 inch male NPT gauge cock engineered for critical isolation in steam and hydronic systems

Allanson Transformers 2721-668 Transformer 30067439-890 the 25663 is built toThe Allanson 2721 668 Ignition Transformer is a heavy duty, iron core electromagnetic unit designed for reliable oil burner ignition. This transformer operates on a 120Vac supply voltage and delivers a high voltage 10,000Vac secondary output at 23mA. Engineered with a midpoint ground configuration, it ensures stable arc performance and consistent combustion in residential and commercial heating systems. As the direct replacement for 2721 668SF models,