this spring provides the necessary linear feedback for stable medium-pressure steam or water flow regulation

This Johnson Controls duct sensor is a passive

including the motor and internal impeller required for proper combustion air flow

Broad System Compatibility: Fits popular York package unit gas burners such as DDUC-T090N205A and DR240N32P2AAA1A models

a "mushy" feel when rotating the dial

Robertshaw 780-783 Ignition Module 30067439-890 this spring provides the necessaryThe Robertshaw 780 783 is a critical HSI ignition module engineered for high demand gas fired heating systems and commercial cooking applications. As a direct replacement for the HS78034PL308A, this unit utilizes standard 120V AC supply voltage and 24V AC control voltage to provide reliable hot surface ignition. Designed for versatile field application, it supports both local and remote flame sensing, ensuring a stable flame rectification signal