This sheave is specifically bored to 1 inch

A faulty limit switch often results in the furnace blower running constantly or the burners shutting down prematurely (short cycling)

Is the Lennox 48J01 a direct replacement for 48J0101

Constructed from high-grade

Mechanical Calibration: Reliable bimetal coil technology eliminates the need for external power or batteries

Conbraco Industries 18C-402X-38 Valve This sheave is specifically boredFor high demand commercial water heating systems, the Conbraco 18C 402X 38 Valve (also known under the Apollo brand) provides critical protection against thermal expansion and over pressure conditions. This 3 4" MNPT x 3 4" FNPT T&P relief valve is engineered specifically with a 2" extended shank, allowing for proper installation on modern water heaters with thick insulation blankets without compromising the discharge path. With a factory calibrated