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with side taps provided for additional piping flexibility
these knobs provide the tactile feedback and mechanical reliability required for accurate thermal regulation
making it a versatile addition to your service truck stock when troubleshooting vent pressure switch failure or fluctuating pressure codes
a weak or yellow pilot flame
McDonnell & Miller 347900 Assembly and Gaskets Els PW 17895 with side taps provided forThe McDonnell & Miller 347900, also identified by model number SA150 106R, is a critical bellows assembly and gasket replacement engineered for Series 150 and 157 low water cut off (LWCO) and pump controllers. For technicians servicing steam boilers, this assembly is the primary pressure sensing component that translates water level changes into mechanical action for the switch head. Constructed with a corrosion resistant Monel bellows, the unit is
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