Direct Fit Retrofit: The 3/4" inverted flare design and PopTop mounting system allow for rapid installation without piping modifications

Industrial Build: Heavy-duty hub and blade assembly designed to withstand the thermal cycling common in HVACR operation

When replacing the head assembly on a 150S-M-MD

though this board is designed to interface with standard Utica-Dunkirk 24V probes

preventing premature bearing failure and ensuring reliable lubrication during varying load conditions

Hydrolevel EL1220-SV Sensing Probe R-22 Direct Fit Retrofit: The 3/4"The Hydrolevel EL1220 SV is a specialized low water cut off (LWCO) sensing probe designed for high performance liquid level monitoring in hydronic heating and steam boiler systems. Featuring a rugged short ceramic insulator, this 45 221 part number is engineered for tight clearance installations where standard probes may interfere with internal castings or piping. The 1 2" NPT threaded connection ensures a secure, leak proof seal, while the 2 1 16"