verified Armstrong furnace parts like this assembly provide exact drop-in compatibility

providing the precise torque control required to maintain consistent CFM across various static pressure levels

this direct acting controller optimizes energy consumption while maintaining occupant comfort in large-scale air handling applications

Easy Installation: Standard configuration allows for rapid swap-outs during routine service or emergency repairs

this 1 1/4" NPT gas regulator is compatible with both natural gas and propane

McDonnell & Miller 94 Controller R-22 verified Armstrong furnace parts likeWorking on a high pressure system requires reliability that won't flake out when the building's steam demand peaks. The McDonnell & Miller Series 94 (Part Number 165200) is a heavy duty combination low water cut off and pump controller specifically engineered for commercial and industrial steam boilers. Rated for a maximum pressure of 250 PSI, this unit uses a unique magnetic repulsion mechanism that completely eliminates the need for a