Grundfos 99463939 Pump 318973-401 and 501 CRD series oil

and 501 CRD series oil burners

Enhanced System Safety: Monitors flame presence with micro-amp precision to prevent dangerous gas buildup during failed ignition cycles

Is the 257009 compatible with both natural gas and propane heaters

which points to bearing wear

Always verify your specific boiler model and series against the manufacturer's parts list

Grundfos 99463939 Pump 318973-401 and 501 CRD series oilThe Grundfos 99463939, also known as the JP PS 16 05 154, is a heavy duty, self priming shallow well jet pump engineered for contractors who require high pressure reliability in residential and light commercial water transfer. Built with a corrosion resistant stainless steel housing and a composite technopolymer impeller, this 1 2 HP jet pump is designed to handle demanding suction lifts up to 26 feet. The unit features dual voltage capability,