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It is essential for restoring the 20 to 30 millivolt signal required by the gas valve to maintain safe burner operation
Key Benefits Direct Compatibility: Fits 1/2 inch and 3/4 inch Watts 800M4 pressure vacuum breaker assemblies and their lead-free counterparts
Tamper-Resistant Security: Prevents unauthorized personnel from changing setpoints
Vibration Dampening: Rigid frame construction minimizes harmonic noise during high-speed operation
McDonnell & Miller 343500 Bellows Assembly 30067439-890 It is essential for restoringWhen 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
