Can these be removed if the system needs to be recalibrated

With 1/2 inch NPT threaded connections and a high-strength aluminum die-cast housing

The Nordyne 660303R Orifice is a precision-engineered OEM replacement part specifically designed for LP (Liquid Propane) gas configurations in 66 Series furnaces

the 20415901 is the official superseding part number for the 20415501

Using this genuine Maxitrol 11A05-61 compression fitting ensures the integrity of the regulation system and supports optimal poppet movement and lock-up performance

Schneider Electric (Barber Colman) AT-520-40 Knob Kit Can these be removed ifThe Schneider Electric (Barber Colman) AT 520 40 Knob Kit is a critical replacement component for field technicians managing pneumatic control systems and legacy HVAC automation hardware. This setpoint knob kit is specifically engineered to provide a precision fit for Barber Colman TK Series thermostats, ensuring accurate calibration and tactile adjustment of space temperature setpoints. Built from high impact, industrial grade plastic, the AT 520 40