Xylem-McDonnell & Miller 343200 Replacement Bellows Assembly SA63-5

The Xylem-McDonnell & Miller 343200 Bellows Assembly represents a premium bellows assembly system that operates in low water cut-off controls for steam boiler HVAC systems. This component operates through pressure changes to activate electrical switch contacts which helps control safe boiler water levels. This Replacement Bellows Assembly delivers dependable performance to stop dry firing events which protects boiler elements from destruction. The replacement bellows operates in residential and commercial steam heating systems to provide dependable operation while extending control system longevity.