The Ranco O series is built with a rugged plated steel frame and laser-welded bellows to ensure long-term reliability even in high-vibration environments

Precise Mechanical Stroke: Delivers a consistent 2-inch damper stroke

The Robertshaw Y-30128-AF35 is typically rated for specific gas types depending on the appliance regulator

Engineered for high-airflow efficiency

and EM series

Fenwal 35-655205-013 Control 30067439-890 The Ranco O series isThe Fenwal 35 655205 013 is a microprocessor based 24V Hot Surface Ignition (HSI) Control engineered for high reliability gas fired equipment. This HVAC ignition module operates with a 7 second Trial for Ignition (TFI) and a 3 try ignition sequence, ensuring robust burner starts even in demanding environments. Designed with a 15 second inter purge and no pre purge (0 sec), it provides immediate response upon a call for heat while maintaining a 15ip