maintaining lubricant purity is non-negotiable for protecting high-speed bearings and mechanical seals

and upper spring seat

Internal stainless steel float and lever mechanism resist fouling and corrosion

reducing resistance variables and potential failure points

Fenwal 35-665721-101 Control 30067439-890 maintaining lubricant purity is non-negotiableThe Fenwal 35 665721 101 is a microprocessor based 24V Hot Surface Ignition (HSI) control designed for precise burner sequencing in gas fired equipment. This MiniIgnition control features a 4 second Trial for Ignition (TFI) and a 15 second pre purge cycle to exhaust residual gases from the combustion chamber, ensuring a safe start up. Built with a single trial ignition logic (1TRY), the 35 665721 101 provides reliable flame monitoring and utilizes