The gauge glass tube must be sourced separately based on the specific height required for your boiler model

gastight seal and prevent potential exhaust leaks

it allows for precise control of indoor fan motor speeds across equipment ranges from 6 to 30 tons

System Safety: Mechanical flow reduction occurs in seconds if the cold water supply is interrupted to prevent high-temperature exposure

contributing to lower energy consumption and better plant stability

Lau 6128310001 Fan Blade 321042-401 The gauge glass tube mustThe Lau 6128310001 Fan Blade is a heavy duty 22 inch condenser fan propeller engineered for high static pressure applications in commercial and residential HVAC systems. Constructed from durable galvanized steel, this 3 blade propeller features a 30 degree pitch and is designed for CCW rotation (counter clockwise) when viewed from the air discharge side. This specific model, part of the Lau Econoflow series, utilizes a 1 2 inch bore hub located on the