Its monel bellows construction offers superior corrosion resistance against aggressive boiler chemistries

and ductwork for airflow obstructions

which disables the compressor and forces the system to rely solely on auxiliary heat strips

this part is specifically a Main LP Orifice for liquid propane

Standardized Connections: Features a 5/16" ODF suction and 1/4" ODF discharge for standard sweat-fit installation

Cleveland Controls NS2-3126-00 Pressure Switch Els PW 29614 Its monel bellows construction offersThe Cleveland Controls NS2 3126 00 Pressure Switch is a genuine OEM air pressure switch engineered for reliable pressure sensing in gas furnaces, HVAC equipment, boilers, and other combustion air systems. Factory calibrated to 0. 45" WC (inches water column), this pressure proving switch monitors inducer blower performance and verifies proper venting before allowing ignition. Accurate pressure sensing helps maintain safe equipment operation by