it is the professional choice for maintaining system reliability in harsh environments

Engineered with a 1/2" NPT inlet and 1/2" NPT outlet

it meets rigorous industrial safety standards for gas and air applications

As the direct cross-reference for the obsolete 00PPG000453600A and a replacement for HK02ZA440

always check your specific unit serial number and parts list to confirm compatibility before installation

Utica-Dunkirk PB00903 Flame Sensor THPU32HP7Y it is the professional choiceThe Utica Dunkirk PB00903 Flame Sensor is a specialized mercury flame sensor engineered for precision flame monitoring in cycling pilot ignition systems. As an E type mercury sensor with a bulb style #19, this component is essential for detecting the presence of a pilot flame and allowing the main gas valve to energize. The 48 inch capillary length provides sufficient reach for various HVAC burner box configurations, making it a versatile OEM