Grundfos 92603115 Pump 318973-401 Key Benefits Direct Drop-In Compatibility:

Key Benefits Direct Drop-In Compatibility: Serves as the official replacement for legacy models 0431305 and 0431311

What is the purpose of the 6' capillary

this 90/100W heater prevents the dangerous migration and condensation of liquid refrigerant into the crankcase oil during off-cycles

It requires an H-style split taper bushing (sold separately) to match your specific motor shaft size

protecting the start winding and capacitor from prolonged energization

Grundfos 92603115 Pump 318973-401 Key Benefits Direct Drop-In Compatibility:The Grundfos 92603115 is a high efficiency ALPHA 15 58F 115V 9H circulator engineered for professionals who demand precise flow control in hydronic heating systems. This cast iron circulator pump features an advanced ECM motor that significantly reduces power consumption compared to standard induction models. Integrated with AUTOADAPT technology, the unit automatically analyzes system requirements to select the optimal performance setpoint, minimizing