When replacing Hart or Proctor switches

photoelectric (PSD)

The BASO K19AT-24 is a professional-grade Super Slim Jim universal replacement thermocouple designed for high-reliability performance in standing pilot ignition systems

even in harsh environments

Hydrolevel EL1214 Sensing Probe Els PW 17895 When replacing Hart or ProctorThe Hydrolevel EL1214 (also identified as Part Number 45 214) is a heavy duty 3 4" NPT standard ceramic sensing probe engineered for precise liquid level detection in residential and light commercial boiler systems. Featuring a 2 7 8" insertion length (inside dimension), this probe is a critical component for low water cut off (LWCO) safety controls, providing the essential conductance signal required to prevent dry firing and catastrophic heat