As a high-performance HVAC replacement part

Featuring a factory-calibrated -

Electrical Connection: 18-inch wire leads provide ample length for routing to J-boxes or control panels

always verify your actuator's shaft diameter before installation

As a genuine OEM York replacement part

McDonnell & Miller 343500 Bellows Assembly Freon As a high-performance HVAC replacementWhen you are servicing a 64 Series low water cut off, the McDonnell & Miller 343500 Bellows Assembly (Model SA64 2) is the standard issue component required to restore essential boiler safety functions. This authentic replacement bellows assembly is engineered for heavy duty steam boiler control, specifically bridging the gap between the internal float mechanism and the electrical switch. As a direct fit part for 64 Series LWCO and 764 models, it