McDonnell & Miller 343500 Bellows Assembly R-410A crucial for preventing liquid slugging

crucial for preventing liquid slugging and maintaining system efficiency

A 40 VA transformer can typically handle the boiler’s internal controls and one or two low-draw zone valves

ensuring tight shut-off and downstream protection when appliances are not in operation

and pump control circuits

this OEM assembly typically includes the valve body

McDonnell & Miller 343500 Bellows Assembly R-410A crucial for preventing liquid sluggingWhen 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