calibrated to "open" and break the electrical circuit at 160 degrees F and "close" to restore operation once the temperature drops to 120 degrees F

Precision-drilled #43 (

An auto limit switch like the 4520-2048-000 automatically closes the circuit once the system cools down

The HH12ZB200 is the sanctioned direct replacement for HH12ZA199

Field-Serviceable: Rigid yet flexible aluminum allows you to bend and cut to exact fitment requirements on-site

McDonnell & Miller P-1-SS Probe Rod calibrated to "open" and breakThe McDonnell & Miller P 1 SS Probe Rod (Part Number 179530) is a critical component for high precision liquid level control in hdyronic and steam systems. Engineered from 12 inch 316 stainless steel, this probe rod provides superior corrosion resistance and structural integrity for long term immersion in boiler environments. Designed for seamless integration with RS series sensors, the P 1 SS is commonly utilized with PCH, PCL, and LPC 2000 liquid