For field calibration and performance tuning

Circuit Protection: Effectively manages inductive loads to prevent contact welding in the heater control circuit

What are the signs that an inner burner tube needs replacement

ensuring reliable ignition cycles in high-demand residential and light commercial environments

preventing moisture damage to the HVAC cabinet or furnace heat exchanger

Maxitrol R9110-13 Brown Spring 321042-401 For field calibration and performanceThe Maxitrol R9110 13 Brown Spring is an OEM spec pressure adjustment component engineered for precise outlet pressure calibration within Maxitrol RV91 and 210E Series gas regulators. Designed for low pressure applications, this 4 inch brown coded spring supports an adjustable outlet pressure range of 1. 0" to 3. 5" W. C. (Water Column), ensuring the poppet or balanced valve assembly maintains consistent delivery to downstream burners. For technicians